工作流程功能升级

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/controller/admin/definition/BpmModelController.java

@@ -97,7 +97,8 @@
            return null;
        }
        byte[] bpmnBytes = modelService.getModelBpmnXML(id);
        return success(BpmModelConvert.INSTANCE.buildModel(model, bpmnBytes));
        BpmSimpleModelNodeVO simpleModel = modelService.getSimpleModel(id);
        return success(BpmModelConvert.INSTANCE.buildModel(model, bpmnBytes, simpleModel));
    }

    @PostMapping("/create")
@@ -106,7 +107,6 @@
    public CommonResult<String> createModel(@Valid @RequestBody BpmModelSaveReqVO createRetVO) {
        return success(modelService.createModel(createRetVO));
    }


    @PutMapping("/update")
    @Operation(summary = "修改模型")
@@ -141,6 +141,7 @@
        return success(true);
    }

    @Deprecated
    @PutMapping("/update-bpmn")
    @Operation(summary = "修改模型的 BPMN")
    @PreAuthorize("@ss.hasPermission('bpm:model:update')")
@@ -167,6 +168,7 @@
        return success(modelService.getSimpleModel(modelId));
    }

    @Deprecated
    @PostMapping("/simple/update")
    @Operation(summary = "保存仿钉钉流程设计模型")
    @PreAuthorize("@ss.hasPermission('bpm:model:update')")
@@ -174,6 +176,4 @@
        modelService.updateSimpleModel(getLoginUserId(), reqVO);
        return success(Boolean.TRUE);
    }


}

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/controller/admin/definition/vo/model/BpmModelRespVO.java

@@ -1,6 +1,7 @@
package com.iailab.module.bpm.controller.admin.definition.vo.model;

import com.iailab.module.bpm.controller.admin.base.user.UserSimpleBaseVO;
import com.iailab.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
import com.iailab.module.bpm.controller.admin.definition.vo.process.BpmProcessDefinitionRespVO;
import io.swagger.v3.oas.annotations.media.Schema;
import lombok.Data;
@@ -35,15 +36,19 @@
    @Schema(description = "创建时间", requiredMode = Schema.RequiredMode.REQUIRED)
    private LocalDateTime createTime;

    @Schema(description = "BPMN XML", requiredMode = Schema.RequiredMode.REQUIRED)
    private String bpmnXml;

    @Schema(description = "可发起的用户数组")
    private List<UserSimpleBaseVO> startUsers;

    @Schema(description = "BPMN XML")
    private String bpmnXml;

    @Schema(description = "仿钉钉流程设计模型对象")
    private BpmSimpleModelNodeVO simpleModel;

    /**
     * 最新部署的流程定义
     */
    private BpmProcessDefinitionRespVO processDefinition;


}

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/controller/admin/definition/vo/model/BpmModelSaveReqVO.java

@@ -1,8 +1,10 @@
package com.iailab.module.bpm.controller.admin.definition.vo.model;

import com.iailab.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
import io.swagger.v3.oas.annotations.media.Schema;
import lombok.Data;

import javax.validation.Valid;
import javax.validation.constraints.NotEmpty;

@Schema(description = "管理后台 - 流程模型的保存 Request VO")
@@ -23,4 +25,11 @@
    @Schema(description = "流程分类", example = "1")
    private String category;

    @Schema(description = "BPMN XML")
    private String bpmnXml;

    @Schema(description = "仿钉钉流程设计模型对象")
    @Valid
    private BpmSimpleModelNodeVO simpleModel;

}

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/controller/admin/task/vo/task/BpmTaskPageReqVO.java

@@ -12,9 +12,12 @@
@Data
public class BpmTaskPageReqVO extends PageParam {

    @Schema(description = "流程任务名", example = "平台")
    @Schema(description = "流程任务名", example = "芋道")
    private String name;

    @Schema(description = "流程分类", example = "1")
    private String category;

    @Schema(description = "创建时间")
    @DateTimeFormat(pattern = DateUtils.FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND)
    private LocalDateTime[] createTime;

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/convert/definition/BpmModelConvert.java

@@ -8,6 +8,7 @@
import com.iailab.module.bpm.controller.admin.definition.vo.model.BpmModelMetaInfoVO;
import com.iailab.module.bpm.controller.admin.definition.vo.model.BpmModelRespVO;
import com.iailab.module.bpm.controller.admin.definition.vo.model.BpmModelSaveReqVO;
import com.iailab.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
import com.iailab.module.bpm.controller.admin.definition.vo.process.BpmProcessDefinitionRespVO;
import com.iailab.module.bpm.dal.dataobject.definition.BpmCategoryDO;
import com.iailab.module.bpm.dal.dataobject.definition.BpmFormDO;
@@ -58,12 +59,13 @@
        return result;
    }

    default BpmModelRespVO buildModel(Model model, byte[] bpmnBytes) {
    default BpmModelRespVO buildModel(Model model, byte[] bpmnBytes, BpmSimpleModelNodeVO simpleModel) {
        BpmModelMetaInfoVO metaInfo = parseMetaInfo(model);
        BpmModelRespVO modelVO = buildModel0(model, metaInfo, null, null, null, null, null);
        if (ArrayUtil.isNotEmpty(bpmnBytes)) {
            modelVO.setBpmnXml(BpmnModelUtils.getBpmnXml(bpmnBytes));
        }
        modelVO.setSimpleModel(simpleModel);
        return modelVO;
    }


 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/convert/task/BpmTaskConvert.java

@@ -58,7 +58,7 @@
                                                    Map<String, HistoricProcessInstance> processInstanceMap,
                                                    Map<Long, AdminUserRespDTO> userMap,
                                                    Map<Long, DeptRespDTO> deptMap) {
        List<BpmTaskRespVO> taskVOList = convertList(pageResult.getList(), task -> {
        List<BpmTaskRespVO> taskVOList = CollectionUtils.convertList(pageResult.getList(), task -> {
            BpmTaskRespVO taskVO = BeanUtils.toBean(task, BpmTaskRespVO.class);
            taskVO.setStatus(FlowableUtils.getTaskStatus(task)).setReason(FlowableUtils.getTaskReason(task));
            // 用户信息
@@ -83,7 +83,7 @@
                                                                 Map<Long, BpmFormDO> formMap,
                                                                 Map<Long, AdminUserRespDTO> userMap,
                                                                 Map<Long, DeptRespDTO> deptMap) {
        return convertList(taskList, task -> {
        return CollectionUtils.convertList(taskList, task -> {
            // 特殊：已取消的任务，不返回
            BpmTaskRespVO taskVO = BeanUtils.toBean(task, BpmTaskRespVO.class);
            Integer taskStatus = FlowableUtils.getTaskStatus(task);
@@ -125,12 +125,18 @@
    }

    default BpmTaskRespVO buildTodoTask(Task todoTask, List<Task> childrenTasks,
                                              Map<Integer, BpmTaskRespVO.OperationButtonSetting> buttonsSetting) {
        return BeanUtils.toBean(todoTask, BpmTaskRespVO.class)
                                        Map<Integer, BpmTaskRespVO.OperationButtonSetting> buttonsSetting,
                                        BpmFormDO form) {
        BpmTaskRespVO bpmTaskRespVO = BeanUtils.toBean(todoTask, BpmTaskRespVO.class)
                .setStatus(FlowableUtils.getTaskStatus(todoTask)).setReason(FlowableUtils.getTaskReason(todoTask))
                .setButtonsSetting(buttonsSetting)
                .setChildren(convertList(childrenTasks, childTask -> BeanUtils.toBean(childTask, BpmTaskRespVO.class)
                        .setStatus(FlowableUtils.getTaskStatus(childTask))));
        if (form != null) {
            bpmTaskRespVO.setFormId(form.getId()).setFormName(form.getName())
                    .setFormConf(form.getConf()).setFormFields(form.getFields());
        }
        return bpmTaskRespVO;
    }

    default BpmMessageSendWhenTaskCreatedReqDTO convert(ProcessInstance processInstance, AdminUserRespDTO startUser,

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/framework/flowable/core/behavior/BpmParallelMultiInstanceBehavior.java

@@ -54,13 +54,13 @@
        Set<Long> assigneeUserIds = (Set<Long>) execution.getVariable(super.collectionVariable, Set.class);
        if (assigneeUserIds == null) {
            assigneeUserIds = taskCandidateInvoker.calculateUsersByTask(execution);
            execution.setVariable(super.collectionVariable, assigneeUserIds);
            if (CollUtil.isEmpty(assigneeUserIds)) {
                // 特殊：如果没有处理人的情况下，至少有一个 null 空元素，避免自动通过！
                // 这样，保证在 BpmUserTaskActivityBehavior 至少创建出一个 Task 任务
                // 用途：1）审批人为空时；2）审批类型为自动通过、自动拒绝时
                assigneeUserIds = SetUtils.asSet((Long) null);
            }
            execution.setVariableLocal(super.collectionVariable, assigneeUserIds);
        }
        return assigneeUserIds.size();
    }

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/framework/flowable/core/behavior/BpmSequentialMultiInstanceBehavior.java

@@ -10,7 +10,6 @@
import org.flowable.engine.impl.bpmn.behavior.AbstractBpmnActivityBehavior;
import org.flowable.engine.impl.bpmn.behavior.SequentialMultiInstanceBehavior;

import java.util.LinkedHashSet;
import java.util.Set;

/**
@@ -44,17 +43,18 @@
        super.collectionElementVariable = FlowableUtils.formatExecutionCollectionElementVariable(execution.getCurrentActivityId());

        // 第二步，获取任务的所有处理人
        // 不使用 execution.getVariable 原因：目前依次审批任务回退后 collectionVariable 变量没有清理， 如果重新进入该任务不会重新分配审批人
        @SuppressWarnings("unchecked")
        Set<Long> assigneeUserIds = (Set<Long>) execution.getVariable(super.collectionVariable, Set.class);
        Set<Long> assigneeUserIds = (Set<Long>) execution.getVariableLocal(super.collectionVariable, Set.class);
        if (assigneeUserIds == null) {
            assigneeUserIds = taskCandidateInvoker.calculateUsersByTask(execution);
            execution.setVariable(super.collectionVariable, assigneeUserIds);
            if (CollUtil.isEmpty(assigneeUserIds)) {
                // 特殊：如果没有处理人的情况下，至少有一个 null 空元素，避免自动通过！
                // 这样，保证在 BpmUserTaskActivityBehavior 至少创建出一个 Task 任务
                // 用途：1）审批人为空时；2）审批类型为自动通过、自动拒绝时
                assigneeUserIds = SetUtils.asSet((Long) null);
            }
            execution.setVariableLocal(super.collectionVariable, assigneeUserIds);
        }
        return assigneeUserIds.size();
    }

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/framework/flowable/core/candidate/strategy/other/BpmTaskCandidateExpressionStrategy.java

@@ -1,13 +1,17 @@
package com.iailab.module.bpm.framework.flowable.core.candidate.strategy.other;

import cn.hutool.core.convert.Convert;
import com.google.common.collect.Sets;
import com.iailab.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
import com.iailab.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
import com.iailab.module.bpm.framework.flowable.core.util.FlowableUtils;
import lombok.extern.slf4j.Slf4j;
import org.flowable.bpmn.model.BpmnModel;
import org.flowable.common.engine.api.FlowableException;
import org.flowable.engine.delegate.DelegateExecution;
import org.springframework.stereotype.Component;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

@@ -17,6 +21,7 @@
 * @author iailab
 */
@Component
@Slf4j
public class BpmTaskCandidateExpressionStrategy implements BpmTaskCandidateStrategy {

    @Override
@@ -38,8 +43,16 @@
    @Override
    public Set<Long> calculateUsersByActivity(BpmnModel bpmnModel, String activityId, String param,
                                              Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
        Object result = FlowableUtils.getExpressionValue(processVariables, param);
        return Convert.toSet(Long.class, result);
        Map<String, Object> variables = processVariables == null ? new HashMap<>() : processVariables;
        try {
            Object result = FlowableUtils.getExpressionValue(variables, param);
            return Convert.toSet(Long.class, result);
        } catch (FlowableException ex) {
            // 预测未运行的节点时候，表达式如果包含 execution 或者不存在的流程变量会抛异常，
            log.warn("[calculateUsersByActivity][表达式({}) 变量({}) 解析报错", param, variables, ex);
            // 不能预测候选人，返回空列表, 避免流程无法进行
            return Sets.newHashSet();
        }
    }

}

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/framework/flowable/core/util/BpmnModelUtils.java

@@ -73,7 +73,6 @@
        extensionElement.setName(name);
        attributes.forEach((key, value) -> {
            ExtensionAttribute extensionAttribute = new ExtensionAttribute(key, value);
            extensionAttribute.setNamespace(FLOWABLE_EXTENSIONS_NAMESPACE);
            extensionElement.addAttribute(extensionAttribute);
        });
        element.addExtensionElement(extensionElement);
@@ -278,8 +277,8 @@
        }
        Map<String, String> fieldsPermission = MapUtil.newHashMap();
        extensionElements.forEach(element -> {
            String field = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, FORM_FIELD_PERMISSION_ELEMENT_FIELD_ATTRIBUTE);
            String permission = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, FORM_FIELD_PERMISSION_ELEMENT_PERMISSION_ATTRIBUTE);
            String field = element.getAttributeValue(null, FORM_FIELD_PERMISSION_ELEMENT_FIELD_ATTRIBUTE);
            String permission = element.getAttributeValue(null, FORM_FIELD_PERMISSION_ELEMENT_PERMISSION_ATTRIBUTE);
            if (StrUtil.isNotEmpty(field) && StrUtil.isNotEmpty(permission)) {
                fieldsPermission.put(field, permission);
            }
@@ -321,9 +320,9 @@
        }
        Map<Integer, BpmTaskRespVO.OperationButtonSetting> buttonSettings = Maps.newHashMapWithExpectedSize(extensionElements.size());
        extensionElements.forEach(element -> {
            String id = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, BUTTON_SETTING_ELEMENT_ID_ATTRIBUTE);
            String displayName = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, BUTTON_SETTING_ELEMENT_DISPLAY_NAME_ATTRIBUTE);
            String enable = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, BUTTON_SETTING_ELEMENT_ENABLE_ATTRIBUTE);
            String id = element.getAttributeValue(null, BUTTON_SETTING_ELEMENT_ID_ATTRIBUTE);
            String displayName = element.getAttributeValue(null, BUTTON_SETTING_ELEMENT_DISPLAY_NAME_ATTRIBUTE);
            String enable = element.getAttributeValue(null, BUTTON_SETTING_ELEMENT_ENABLE_ATTRIBUTE);
            if (StrUtil.isNotEmpty(id)) {
                BpmTaskRespVO.OperationButtonSetting setting = new BpmTaskRespVO.OperationButtonSetting();
                buttonSettings.put(Integer.valueOf(id), setting.setDisplayName(displayName).setEnable(Boolean.parseBoolean(enable)));
@@ -699,9 +698,9 @@

        // 情况：StartEvent/EndEvent/UserTask/ServiceTask
        if (currentElement instanceof StartEvent
            || currentElement instanceof EndEvent
            || currentElement instanceof UserTask
            || currentElement instanceof ServiceTask) {
                || currentElement instanceof EndEvent
                || currentElement instanceof UserTask
                || currentElement instanceof ServiceTask) {
            // 添加元素
            FlowNode flowNode = (FlowNode) currentElement;
            resultElements.add(flowNode);
@@ -720,7 +719,7 @@
                            && evalConditionExpress(variables, flow.getConditionExpression()));
            if (matchSequenceFlow == null) {
                matchSequenceFlow = CollUtil.findOne(gateway.getOutgoingFlows(),
                        flow -> ObjUtil.notEqual(gateway.getDefaultFlow(), flow.getId()));
                        flow -> ObjUtil.equal(gateway.getDefaultFlow(), flow.getId()));
                // 特殊：没有默认的情况下，并且只有 1 个条件，则认为它是默认的
                if (matchSequenceFlow == null && gateway.getOutgoingFlows().size() == 1) {
                    matchSequenceFlow = gateway.getOutgoingFlows().get(0);
@@ -742,7 +741,7 @@
                            && evalConditionExpress(variables, flow.getConditionExpression()));
            if (CollUtil.isEmpty(matchSequenceFlows)) {
                matchSequenceFlows = CollUtil.filterNew(gateway.getOutgoingFlows(),
                        flow -> ObjUtil.notEqual(gateway.getDefaultFlow(), flow.getId()));
                        flow -> ObjUtil.equal(gateway.getDefaultFlow(), flow.getId()));
                // 特殊：没有默认的情况下，并且只有 1 个条件，则认为它是默认的
                if (CollUtil.isEmpty(matchSequenceFlows) && gateway.getOutgoingFlows().size() == 1) {
                    matchSequenceFlows = gateway.getOutgoingFlows();

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/framework/flowable/core/util/FlowableUtils.java

@@ -22,6 +22,7 @@
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.Callable;

/**
 * Flowable 相关的工具方法
@@ -40,6 +41,17 @@
        Authentication.setAuthenticatedUserId(null);
    }

    public static <V> V executeAuthenticatedUserId(Long userId, Callable<V> callable) {
        setAuthenticatedUserId(userId);
        try {
            return callable.call();
        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            clearAuthenticatedUserId();
        }
    }

    public static String getTenantId() {
        Long tenantId = TenantContextHolder.getTenantId();
        return tenantId != null ? String.valueOf(tenantId) : ProcessEngineConfiguration.NO_TENANT_ID;

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/framework/flowable/core/util/SimpleModelUtils.java

@@ -82,7 +82,7 @@

    private static BpmSimpleModelNodeVO buildStartNode() {
        return new BpmSimpleModelNodeVO().setId(START_EVENT_NODE_ID)
                .setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
                .setName(BpmSimpleModelNodeType.START_NODE.getName())
                .setType(BpmSimpleModelNodeType.START_NODE.getType());
    }

@@ -316,7 +316,7 @@
            userTask.setName(node.getName());

            // 人工审批
            addExtensionElement(userTask, USER_TASK_APPROVE_TYPE, BpmUserTaskApproveTypeEnum.USER.getType());
            addExtensionElement(userTask, BpmnModelConstants.USER_TASK_APPROVE_TYPE, BpmUserTaskApproveTypeEnum.USER.getType());
            // 候选人策略为发起人自己
            addCandidateElements(BpmTaskCandidateStrategyEnum.START_USER.getStrategy(), null, userTask);
            // 添加表单字段权限属性元素
@@ -619,7 +619,7 @@
    }

    private static void simulateNextNode(BpmSimpleModelNodeVO currentNode, Map<String, Object> variables,
                                  List<BpmSimpleModelNodeVO> resultNodes) {
                                         List<BpmSimpleModelNodeVO> resultNodes) {
        // 如果不合法（包括为空），则直接结束
        if (!isValidNode(currentNode)) {
            return;
@@ -629,10 +629,10 @@

        // 情况：START_NODE/START_USER_NODE/APPROVE_NODE/COPY_NODE/END_NODE
        if (nodeType == BpmSimpleModelNodeType.START_NODE
            || nodeType == BpmSimpleModelNodeType.START_USER_NODE
            || nodeType == BpmSimpleModelNodeType.APPROVE_NODE
            || nodeType == BpmSimpleModelNodeType.COPY_NODE
            || nodeType == BpmSimpleModelNodeType.END_NODE) {
                || nodeType == BpmSimpleModelNodeType.START_USER_NODE
                || nodeType == BpmSimpleModelNodeType.APPROVE_NODE
                || nodeType == BpmSimpleModelNodeType.COPY_NODE
                || nodeType == BpmSimpleModelNodeType.END_NODE) {
            // 添加元素
            resultNodes.add(currentNode);
        }
@@ -642,7 +642,7 @@
            // 查找满足条件的 BpmSimpleModelNodeVO 节点
            BpmSimpleModelNodeVO matchConditionNode = CollUtil.findOne(currentNode.getConditionNodes(),
                    conditionNode -> !BooleanUtil.isTrue(conditionNode.getDefaultFlow())
                        && evalConditionExpress(variables, conditionNode));
                            && evalConditionExpress(variables, conditionNode));
            if (matchConditionNode == null) {
                matchConditionNode = CollUtil.findOne(currentNode.getConditionNodes(),
                        conditionNode -> BooleanUtil.isTrue(conditionNode.getDefaultFlow()));

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/service/definition/BpmModelServiceImpl.java

@@ -2,6 +2,7 @@

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.ObjUtil;
import cn.hutool.core.util.StrUtil;
import com.iailab.framework.common.util.json.JsonUtils;
import com.iailab.framework.common.util.validation.ValidationUtils;
@@ -12,11 +13,11 @@
import com.iailab.module.bpm.convert.definition.BpmModelConvert;
import com.iailab.module.bpm.dal.dataobject.definition.BpmFormDO;
import com.iailab.module.bpm.enums.definition.BpmModelFormTypeEnum;
import com.iailab.module.bpm.enums.definition.BpmModelTypeEnum;
import com.iailab.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateInvoker;
import com.iailab.module.bpm.framework.flowable.core.util.BpmnModelUtils;
import com.iailab.module.bpm.framework.flowable.core.util.FlowableUtils;
import com.iailab.module.bpm.framework.flowable.core.util.SimpleModelUtils;
import com.iailab.module.bpm.service.definition.dto.BpmModelMetaInfoRespDTO;
import lombok.extern.slf4j.Slf4j;
import org.flowable.bpmn.model.BpmnModel;
import org.flowable.bpmn.model.StartEvent;
@@ -28,7 +29,6 @@
import org.flowable.engine.repository.ProcessDefinition;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.ObjectUtils;
import org.springframework.validation.annotation.Validated;

import javax.annotation.Resource;
@@ -66,7 +66,7 @@
    public List<Model> getModelList(String name) {
        ModelQuery modelQuery = repositoryService.createModelQuery();
        if (StrUtil.isNotEmpty(name)) {
            modelQuery.modelNameLike(name);
            modelQuery.modelNameLike("%" + name + "%");
        }
        return modelQuery.list();
    }
@@ -83,26 +83,54 @@
            throw exception(MODEL_KEY_EXISTS, createReqVO.getKey());
        }

        // 2.1 创建流程定义
        // 2. 创建 Model 对象
        createReqVO.setSort(System.currentTimeMillis()); // 使用当前时间，作为排序
        Model model = repositoryService.newModel();
        BpmModelConvert.INSTANCE.copyToModel(model, createReqVO);
        model.setTenantId(FlowableUtils.getTenantId());
        // 2.2 保存流程定义
        repositoryService.saveModel(model);

        // 3. 保存模型
        saveModel(model, createReqVO);
        return model.getId();
    }

    @Override
    @Transactional(rollbackFor = Exception.class) // 因为进行多个操作，所以开启事务
    public void updateModel(Long userId, @Valid BpmModelSaveReqVO updateReqVO) {
    public void updateModel(Long userId, BpmModelSaveReqVO updateReqVO) {
        // 1. 校验流程模型存在
        Model model = validateModelManager(updateReqVO.getId(), userId);

        // 修改流程定义
        // 2. 填充 Model 信息
        BpmModelConvert.INSTANCE.copyToModel(model, updateReqVO);
        // 更新模型

        // 3. 保存模型
        saveModel(model, updateReqVO);
    }

    /**
     * 保存模型的基本信息、流程图
     *
     * @param model 模型
     * @param saveReqVO 保存信息
     */
    private void saveModel(Model model, BpmModelSaveReqVO saveReqVO) {
        // 1. 保存模型的基础信息
        repositoryService.saveModel(model);

        // 2. 保存流程图
        if (ObjUtil.equals(BpmModelTypeEnum.BPMN.getType(), saveReqVO.getType())
                && StrUtil.isNotEmpty(saveReqVO.getBpmnXml())) {
            updateModelBpmnXml(model.getId(), saveReqVO.getBpmnXml());
        } else if (ObjUtil.equals(BpmModelTypeEnum.SIMPLE.getType(), saveReqVO.getType())
                && saveReqVO.getSimpleModel() != null) {
            // JSON 转换成 bpmnModel
            BpmnModel bpmnModel = SimpleModelUtils.buildBpmnModel(model.getKey(), model.getName(),
                    saveReqVO.getSimpleModel());
            // 保存 Bpmn XML
            updateModelBpmnXml(model.getId(), BpmnModelUtils.getBpmnXml(bpmnModel));
            // 保存 JSON 数据
            updateModelSimpleJson(model.getId(), saveReqVO.getSimpleModel());
        }
    }

    @Override
@@ -111,7 +139,7 @@
        // 1.1 校验流程模型存在
        List<Model> models = repositoryService.createModelQuery()
                .modelTenantId(FlowableUtils.getTenantId()).list();
        models.removeIf(model ->!ids.contains(model.getId()));
        models.removeIf(model -> !ids.contains(model.getId()));
        if (ids.size() != models.size()) {
            throw exception(MODEL_NOT_EXISTS);
        }
@@ -174,7 +202,8 @@
        String simpleJson = getModelSimpleJson(model.getId());

        // 2.1 创建流程定义
        String definitionId = processDefinitionService.createProcessDefinition(model, metaInfo, bpmnBytes, simpleJson, form);
        String definitionId = processDefinitionService.createProcessDefinition(model, metaInfo, bpmnBytes, simpleJson,
                form);

        // 2.2 将老的流程定义进行挂起。也就是说，只有最新部署的流程定义，才可以发起任务。
        updateProcessDefinitionSuspended(model.getDeploymentId());
@@ -221,7 +250,8 @@
        // 1.1 校验流程模型存在
        Model model = validateModelManager(id, userId);
        // 1.2 校验流程定义存在
        ProcessDefinition definition = processDefinitionService.getProcessDefinitionByDeploymentId(model.getDeploymentId());
        ProcessDefinition definition = processDefinitionService
                .getProcessDefinitionByDeploymentId(model.getDeploymentId());
        if (definition == null) {
            throw exception(PROCESS_DEFINITION_NOT_EXISTS);
        }
@@ -277,7 +307,8 @@
            }
            return form;
        } else {
            if (StrUtil.isEmpty(metaInfo.getFormCustomCreatePath()) || StrUtil.isEmpty(metaInfo.getFormCustomViewPath())) {
            if (StrUtil.isEmpty(metaInfo.getFormCustomCreatePath())
                    || StrUtil.isEmpty(metaInfo.getFormCustomViewPath())) {
                throw exception(MODEL_DEPLOY_FAIL_FORM_NOT_CONFIG);
            }
            return null;
@@ -324,7 +355,8 @@
        if (oldDefinition == null) {
            return;
        }
        processDefinitionService.updateProcessDefinitionState(oldDefinition.getId(), SuspensionState.SUSPENDED.getStateCode());
        processDefinitionService.updateProcessDefinitionState(oldDefinition.getId(),
                SuspensionState.SUSPENDED.getStateCode());
    }

    private Model getModelByKey(String key) {

 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/service/task/BpmProcessInstanceServiceImpl.java

@@ -1 +1 @@
package com.iailab.module.bpm.service.task;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.collection.ListUtil;
import cn.hutool.core.lang.Assert;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import com.iailab.framework.common.pojo.PageResult;
import com.iailab.framework.common.util.date.DateUtils;
import com.iailab.framework.common.util.json.JsonUtils;
import com.iailab.framework.common.util.object.ObjectUtils;
import com.iailab.framework.common.util.object.PageUtils;
import com.iailab.module.bpm.api.task.dto.BpmProcessInstanceCreateReqDTO;
import com.iailab.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
import com.iailab.module.bpm.controller.admin.task.vo.instance.*;
import com.iailab.module.bpm.controller.admin.task.vo.task.BpmTaskRespVO;
import com.iailab.module.bpm.convert.task.BpmProcessInstanceConvert;
import com.iailab.module.bpm.dal.dataobject.definition.BpmProcessDefinitionInfoDO;
import com.iailab.module.bpm.enums.ErrorCodeConstants;
import com.iailab.module.bpm.enums.definition.BpmModelTypeEnum;
import com.iailab.module.bpm.enums.definition.BpmSimpleModelNodeType;
import com.iailab.module.bpm.enums.task.BpmProcessInstanceStatusEnum;
import com.iailab.module.bpm.enums.task.BpmReasonEnum;
import com.iailab.module.bpm.enums.task.BpmTaskStatusEnum;
import com.iailab.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateInvoker;
import com.iailab.module.bpm.framework.flowable.core.candidate.strategy.dept.BpmTaskCandidateStartUserSelectStrategy;
import com.iailab.module.bpm.framework.flowable.core.enums.BpmnModelConstants;
import com.iailab.module.bpm.framework.flowable.core.enums.BpmnVariableConstants;
import com.iailab.module.bpm.framework.flowable.core.event.BpmProcessInstanceEventPublisher;
import com.iailab.module.bpm.framework.flowable.core.util.BpmnModelUtils;
import com.iailab.module.bpm.framework.flowable.core.util.FlowableUtils;
import com.iailab.module.bpm.framework.flowable.core.util.SimpleModelUtils;
import com.iailab.module.bpm.service.definition.BpmProcessDefinitionService;
import com.iailab.module.bpm.service.message.BpmMessageService;
import com.iailab.module.system.api.dept.DeptApi;
import com.iailab.module.system.api.dept.dto.DeptRespDTO;
import com.iailab.module.system.api.user.AdminUserApi;
import com.iailab.module.system.api.user.dto.AdminUserRespDTO;
import lombok.extern.slf4j.Slf4j;
import org.flowable.bpmn.constants.BpmnXMLConstants;
import org.flowable.bpmn.model.*;
import org.flowable.engine.HistoryService;
import org.flowable.engine.RuntimeService;
import org.flowable.engine.history.HistoricActivityInstance;
import org.flowable.engine.history.HistoricProcessInstance;
import org.flowable.engine.history.HistoricProcessInstanceQuery;
import org.flowable.engine.repository.ProcessDefinition;
import org.flowable.engine.runtime.ProcessInstance;
import org.flowable.task.api.history.HistoricTaskInstance;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.validation.annotation.Validated;

import javax.annotation.Resource;
import javax.validation.Valid;
import java.util.*;

import static com.iailab.framework.common.exception.util.ServiceExceptionUtil.exception;
import static com.iailab.framework.common.util.collection.CollectionUtils.*;
import static com.iailab.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.ActivityNode;
import static com.iailab.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.ActivityNodeTask;
import static com.iailab.module.bpm.enums.ErrorCodeConstants.*;
import static com.iailab.module.bpm.framework.flowable.core.enums.BpmnModelConstants.START_USER_NODE_ID;
import static java.util.Arrays.asList;
import static java.util.Collections.singletonList;
import static org.flowable.bpmn.constants.BpmnXMLConstants.*;

/**
 * 流程实例 Service 实现类
 * <p>
 * ProcessDefinition & ProcessInstance & Execution & Task 的关系：
 * 1. <a href="https://blog.csdn.net/bobozai86/article/details/105210414" />
 * <p>
 * HistoricProcessInstance & ProcessInstance 的关系：
 * 1. <a href=" https://my.oschina.net/843294669/blog/71902" />
 * <p>
 * 简单来说，前者 = 历史 + 运行中的流程实例，后者仅是运行中的流程实例
 *
 * @author 芋道源码
 */
@Service
@Validated
@Slf4j
public class BpmProcessInstanceServiceImpl implements BpmProcessInstanceService {

    @Resource
    private RuntimeService runtimeService;
    @Resource
    private HistoryService historyService;

    @Resource
    private BpmProcessDefinitionService processDefinitionService;
    @Resource
    @Lazy // 避免循环依赖
    private BpmTaskService taskService;
    @Resource
    private BpmMessageService messageService;

    @Resource
    private AdminUserApi adminUserApi;
    @Resource
    private DeptApi deptApi;

    @Resource
    private BpmProcessInstanceEventPublisher processInstanceEventPublisher;

    @Resource
    private BpmTaskCandidateInvoker taskCandidateInvoker;

    // ========== Query 查询相关方法 ==========

    @Override
    public ProcessInstance getProcessInstance(String id) {
        return runtimeService.createProcessInstanceQuery()
                .includeProcessVariables()
                .processInstanceId(id)
                .singleResult();
    }

    @Override
    public List<ProcessInstance> getProcessInstances(Set<String> ids) {
        return runtimeService.createProcessInstanceQuery().processInstanceIds(ids).list();
    }

    @Override
    public HistoricProcessInstance getHistoricProcessInstance(String id) {
        return historyService.createHistoricProcessInstanceQuery().processInstanceId(id).includeProcessVariables().singleResult();
    }

    @Override
    public List<HistoricProcessInstance> getHistoricProcessInstances(Set<String> ids) {
        return historyService.createHistoricProcessInstanceQuery().processInstanceIds(ids).list();
    }

    @Override
    public PageResult<HistoricProcessInstance> getProcessInstancePage(Long userId,
                                                                      BpmProcessInstancePageReqVO pageReqVO) {
        // 通过 BpmProcessInstanceExtDO 表，先查询到对应的分页
        HistoricProcessInstanceQuery processInstanceQuery = historyService.createHistoricProcessInstanceQuery()
                .includeProcessVariables()
                .processInstanceTenantId(FlowableUtils.getTenantId())
                .orderByProcessInstanceStartTime().desc();
        if (userId != null) { // 【我的流程】菜单时，需要传递该字段
            processInstanceQuery.startedBy(String.valueOf(userId));
        } else if (pageReqVO.getStartUserId() != null) { // 【管理流程】菜单时，才会传递该字段
            processInstanceQuery.startedBy(String.valueOf(pageReqVO.getStartUserId()));
        }
        if (StrUtil.isNotEmpty(pageReqVO.getName())) {
            processInstanceQuery.processInstanceNameLike("%" + pageReqVO.getName() + "%");
        }
        if (StrUtil.isNotEmpty(pageReqVO.getProcessDefinitionKey())) {
            processInstanceQuery.processDefinitionKey(pageReqVO.getProcessDefinitionKey());
        }
        if (StrUtil.isNotEmpty(pageReqVO.getCategory())) {
            processInstanceQuery.processDefinitionCategory(pageReqVO.getCategory());
        }
        if (pageReqVO.getStatus() != null) {
            processInstanceQuery.variableValueEquals(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, pageReqVO.getStatus());
        }
        if (ArrayUtil.isNotEmpty(pageReqVO.getCreateTime())) {
            processInstanceQuery.startedAfter(DateUtils.of(pageReqVO.getCreateTime()[0]));
            processInstanceQuery.startedBefore(DateUtils.of(pageReqVO.getCreateTime()[1]));
        }
        // 查询数量
        long processInstanceCount = processInstanceQuery.count();
        if (processInstanceCount == 0) {
            return PageResult.empty(processInstanceCount);
        }
        // 查询列表
        List<HistoricProcessInstance> processInstanceList = processInstanceQuery.listPage(PageUtils.getStart(pageReqVO), pageReqVO.getPageSize());
        return new PageResult<>(processInstanceList, processInstanceCount);
    }


    private Map<String, String> getFormFieldsPermission(BpmnModel bpmnModel,
                                                        String activityId, String taskId) {
        // 1. 获取流程活动编号。流程活动 Id 为空事，从流程任务中获取流程活动 Id
        if (StrUtil.isEmpty(activityId) && StrUtil.isNotEmpty(taskId)) {
            activityId = Optional.ofNullable(taskService.getHistoricTask(taskId))
                    .map(HistoricTaskInstance::getTaskDefinitionKey).orElse(null);
        }
        if (StrUtil.isEmpty(activityId)) {
            return null;
        }

        // 2. 从 BpmnModel 中解析表单字段权限
        return BpmnModelUtils.parseFormFieldsPermission(bpmnModel, activityId);
    }

    @Override
    public BpmApprovalDetailRespVO getApprovalDetail(Long loginUserId, BpmApprovalDetailReqVO reqVO) {
        // 1.1 从 reqVO 中，读取公共变量
        Long startUserId = loginUserId; // 流程发起人
        HistoricProcessInstance historicProcessInstance = null; // 流程实例
        Integer processInstanceStatus = BpmProcessInstanceStatusEnum.NOT_START.getStatus(); // 流程状态
        Map<String, Object> processVariables = reqVO.getProcessVariables(); // 流程变量
        // 1.2 如果是流程已发起的场景，则使用流程实例的数据
        if (reqVO.getProcessInstanceId() != null) {
            historicProcessInstance = getHistoricProcessInstance(reqVO.getProcessInstanceId());
            if (historicProcessInstance == null) {
                throw exception(ErrorCodeConstants.PROCESS_INSTANCE_NOT_EXISTS);
            }
            startUserId = Long.valueOf(historicProcessInstance.getStartUserId());
            processInstanceStatus = FlowableUtils.getProcessInstanceStatus(historicProcessInstance);
            processVariables = historicProcessInstance.getProcessVariables();
        }
        // 1.3 读取其它相关数据
        ProcessDefinition processDefinition = processDefinitionService.getProcessDefinition(
                historicProcessInstance != null ? historicProcessInstance.getProcessDefinitionId() : reqVO.getProcessDefinitionId());
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(processDefinition.getId());
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(processDefinition.getId());

        // 2.1 已结束 + 进行中的活动节点
        List<ActivityNode> endActivityNodes = null; // 已结束的审批信息
        List<ActivityNode> runActivityNodes = null; // 进行中的审批信息
        List<HistoricActivityInstance> activities = null; // 流程实例列表
        if (reqVO.getProcessInstanceId() != null) {
            activities = taskService.getActivityListByProcessInstanceId(reqVO.getProcessInstanceId());
            List<HistoricTaskInstance> tasks = taskService.getTaskListByProcessInstanceId(reqVO.getProcessInstanceId(), true);
            endActivityNodes = getEndActivityNodeList(startUserId, bpmnModel, processDefinitionInfo,
                    historicProcessInstance, processInstanceStatus, activities, tasks);
            runActivityNodes = getRunApproveNodeList(startUserId, bpmnModel, processDefinition, processVariables, activities, tasks);
        }

        // 2.2 流程已经结束，直接 return，无需预测
        if (BpmProcessInstanceStatusEnum.isProcessEndStatus(processInstanceStatus)) {
            return buildApprovalDetail(reqVO, bpmnModel, processDefinition, processDefinitionInfo, historicProcessInstance,
                    processInstanceStatus, endActivityNodes, runActivityNodes, null, null);
        }

        // 3.1 计算当前登录用户的待办任务
        // TODO @jason：有一个极端情况，如果一个用户有 2 个 task A 和 B，A 已经通过，B 需要审核。这个时，通过 A 进来，todo 拿到 B，会不会表单权限不一致哈。
        BpmTaskRespVO todoTask = taskService.getFirstTodoTask(loginUserId, reqVO.getProcessInstanceId());

        // 3.2 预测未运行节点的审批信息
        List<ActivityNode> simulateActivityNodes = getSimulateApproveNodeList(startUserId, bpmnModel, processDefinitionInfo,
                processVariables, activities);

        // 4. 拼接最终数据
        return buildApprovalDetail(reqVO, bpmnModel, processDefinition, processDefinitionInfo, historicProcessInstance,
                processInstanceStatus, endActivityNodes, runActivityNodes, simulateActivityNodes, todoTask);
    }

    /**
     * 拼接审批详情的最终数据
     * <p>
     * 主要是，拼接审批人的用户信息、部门信息
     */
    private BpmApprovalDetailRespVO buildApprovalDetail(BpmApprovalDetailReqVO reqVO,
                                                        BpmnModel bpmnModel,
                                                        ProcessDefinition processDefinition,
                                                        BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                        HistoricProcessInstance processInstance,
                                                        Integer processInstanceStatus,
                                                        List<ActivityNode> endApprovalNodeInfos,
                                                        List<ActivityNode> runningApprovalNodeInfos,
                                                        List<ActivityNode> simulateApprovalNodeInfos,
                                                        BpmTaskRespVO todoTask) {
        // 1. 获取所有需要读取用户信息的 userIds
        List<ActivityNode> approveNodes = newArrayList(asList(endApprovalNodeInfos, runningApprovalNodeInfos, simulateApprovalNodeInfos));
        Set<Long> userIds = BpmProcessInstanceConvert.INSTANCE.parseUserIds(processInstance, approveNodes, todoTask);
        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
        Map<Long, DeptRespDTO> deptMap = deptApi.getDeptMap(convertSet(userMap.values(), AdminUserRespDTO::getDeptId));

        // 2. 表单权限
        Map<String, String> formFieldsPermission = getFormFieldsPermission(bpmnModel, reqVO.getActivityId(), reqVO.getTaskId());

        // 3. 拼接数据
        return BpmProcessInstanceConvert.INSTANCE.buildApprovalDetail(bpmnModel, processDefinition, processDefinitionInfo, processInstance,
                processInstanceStatus, approveNodes, todoTask, formFieldsPermission, userMap, deptMap);
    }

    /**
     * 获得【已结束】的活动节点们
     */
    private List<ActivityNode> getEndActivityNodeList(Long startUserId, BpmnModel bpmnModel,
                                                      BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                      HistoricProcessInstance historicProcessInstance, Integer processInstanceStatus,
                                                      List<HistoricActivityInstance> activities, List<HistoricTaskInstance> tasks) {
        // 遍历 tasks 列表，只处理已结束的 UserTask
        // 为什么不通过 activities 呢？因为，加签场景下，它只存在于 tasks，没有 activities，导致如果遍历 activities 的话，它无法成为一个节点
        List<HistoricTaskInstance> endTasks = filterList(tasks, task -> task.getEndTime() != null);
        List<ActivityNode> approvalNodes = convertList(endTasks, task -> {
            FlowElement flowNode = BpmnModelUtils.getFlowElementById(bpmnModel, task.getTaskDefinitionKey());
            ActivityNode activityNode = new ActivityNode().setId(task.getTaskDefinitionKey()).setName(task.getName())
                    .setNodeType(START_USER_NODE_ID.equals(task.getTaskDefinitionKey()) ?
                            BpmSimpleModelNodeType.START_USER_NODE.getType() : BpmSimpleModelNodeType.APPROVE_NODE.getType())
                    .setStatus(FlowableUtils.getTaskStatus(task))
                    .setCandidateStrategy(BpmnModelUtils.parseCandidateStrategy(flowNode))
                    .setStartTime(DateUtils.of(task.getCreateTime())).setEndTime(DateUtils.of(task.getEndTime()))
                    .setTasks(singletonList(BpmProcessInstanceConvert.INSTANCE.buildApprovalTaskInfo(task)));
            // 如果是取消状态，则跳过
            if (BpmTaskStatusEnum.isCancelStatus(activityNode.getStatus())) {
                return null;
            }
            return activityNode;
        });

        // 遍历 activities，只处理已结束的 StartEvent、EndEvent
        List<HistoricActivityInstance> endActivities = filterList(activities, activity -> activity.getEndTime() != null
                && (StrUtil.equalsAny(activity.getActivityType(), ELEMENT_EVENT_START, ELEMENT_EVENT_END)));
        endActivities.forEach(activity -> {
            // StartEvent：只处理 BPMN 的场景。因为，SIMPLE 情况下，已经有 START_USER_NODE 节点
            if (ELEMENT_EVENT_START.equals(activity.getActivityType())
                    && BpmModelTypeEnum.BPMN.getType().equals(processDefinitionInfo.getModelType())) {
                ActivityNodeTask startTask = new ActivityNodeTask().setId(BpmnModelConstants.START_USER_NODE_ID)
                        .setAssignee(startUserId).setStatus(BpmTaskStatusEnum.APPROVE.getStatus());
                ActivityNode startNode = new ActivityNode().setId(startTask.getId())
                        .setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
                        .setNodeType(BpmSimpleModelNodeType.START_USER_NODE.getType())
                        .setStatus(startTask.getStatus()).setTasks(ListUtil.of(startTask))
                        .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
                approvalNodes.add(0, startNode);
                return;
            }
            // EndEvent
            if (ELEMENT_EVENT_END.equals(activity.getActivityType())) {
                if (BpmProcessInstanceStatusEnum.isRejectStatus(processInstanceStatus)) {
                    // 拒绝情况下，不需要展示 EndEvent 结束节点。原因是：前端已经展示 x 效果，无需重复展示
                    return;
                }
                ActivityNode endNode = new ActivityNode().setId(activity.getId())
                        .setName(BpmSimpleModelNodeType.END_NODE.getName())
                        .setNodeType(BpmSimpleModelNodeType.END_NODE.getType()).setStatus(processInstanceStatus)
                        .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
                String reason = FlowableUtils.getProcessInstanceReason(historicProcessInstance);
                if (StrUtil.isNotEmpty(reason)) {
                    endNode.setTasks(singletonList(new ActivityNodeTask().setId(endNode.getId())
                            .setStatus(endNode.getStatus()).setReason(reason)));
                }
                approvalNodes.add(endNode);
            }
        });
        return approvalNodes;
    }

    /**
     * 获得【进行中】的活动节点们
     */
    private List<ActivityNode> getRunApproveNodeList(Long startUserId,
                                                     BpmnModel bpmnModel,
                                                     ProcessDefinition processDefinition,
                                                     Map<String, Object> processVariables,
                                                     List<HistoricActivityInstance> activities,
                                                     List<HistoricTaskInstance> tasks) {
        // 构建运行中的任务，基于 activityId 分组
        List<HistoricActivityInstance> runActivities = filterList(activities, activity -> activity.getEndTime() == null
                && (StrUtil.equalsAny(activity.getActivityType(), ELEMENT_TASK_USER)));
        Map<String, List<HistoricActivityInstance>> runningTaskMap = convertMultiMap(runActivities, HistoricActivityInstance::getActivityId);

        // 按照 activityId 分组，构建 ApprovalNodeInfo 节点
        Map<String, HistoricTaskInstance> taskMap = convertMap(tasks, HistoricTaskInstance::getId);
        return convertList(runningTaskMap.entrySet(), entry -> {
            String activityId = entry.getKey();
            List<HistoricActivityInstance> taskActivities = entry.getValue();
            // 构建活动节点
            FlowElement flowNode = BpmnModelUtils.getFlowElementById(bpmnModel, activityId);
            HistoricActivityInstance firstActivity = CollUtil.getFirst(taskActivities); // 取第一个任务，会签/或签的任务，开始时间相同
            ActivityNode activityNode = new ActivityNode().setId(firstActivity.getActivityId()).setName(firstActivity.getActivityName())
                    .setNodeType(BpmSimpleModelNodeType.APPROVE_NODE.getType()).setStatus(BpmTaskStatusEnum.RUNNING.getStatus())
                    .setCandidateStrategy(BpmnModelUtils.parseCandidateStrategy(flowNode))
                    .setStartTime(DateUtils.of(CollUtil.getFirst(taskActivities).getStartTime()))
                    .setTasks(new ArrayList<>());
            // 处理每个任务的 tasks 属性
            for (HistoricActivityInstance activity : taskActivities) {
                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                activityNode.getTasks().add(BpmProcessInstanceConvert.INSTANCE.buildApprovalTaskInfo(task));
                // 加签子任务，需要过滤掉已经完成的加签子任务
                List<HistoricTaskInstance> childrenTasks = filterList(
                        taskService.getAllChildrenTaskListByParentTaskId(activity.getTaskId(), tasks),
                        childTask -> childTask.getEndTime() == null);
                if (CollUtil.isNotEmpty(childrenTasks)) {
                    activityNode.getTasks().addAll(convertList(childrenTasks, BpmProcessInstanceConvert.INSTANCE::buildApprovalTaskInfo));
                }
            }
            // 处理每个任务的 candidateUsers 属性：如果是依次审批，需要预测它的后续审批人。因为 Task 是审批完一个，创建一个新的 Task
            if (BpmnModelUtils.isSequentialUserTask(flowNode)) {
                List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, flowNode.getId(),
                        startUserId, processDefinition.getId(), processVariables);
                // 截取当前审批人位置后面的候选人，不包含当前审批人
                ActivityNodeTask approvalTaskInfo = CollUtil.getFirst(activityNode.getTasks());
                Assert.notNull(approvalTaskInfo, "任务不能为空");
                int index = CollUtil.indexOf(candidateUserIds, userId -> ObjectUtils.equalsAny(userId, approvalTaskInfo.getOwner(),
                        approvalTaskInfo.getAssignee())); // 委派或者向前加签情况，需要先比较 owner
                activityNode.setCandidateUserIds(CollUtil.sub(candidateUserIds, index + 1, candidateUserIds.size()));
            }
            return activityNode;
        });
    }

    /**
     * 获得【预测（未来）】的活动节点们
     */
    private List<ActivityNode> getSimulateApproveNodeList(Long startUserId, BpmnModel bpmnModel,
                                                          BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                          Map<String, Object> processVariables,
                                                          List<HistoricActivityInstance> activities) {
        // TODO @芋艿：【可优化】在驳回场景下，未来的预测准确性不高。原因是，驳回后，HistoricActivityInstance 包括了历史的操作，不是只有 startEvent 到当前节点的记录
        Set<String> runActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId);
        // 情况一：BPMN 设计器
        if (Objects.equals(BpmModelTypeEnum.BPMN.getType(), processDefinitionInfo.getModelType())) {
            List<FlowElement> flowElements = BpmnModelUtils.simulateProcess(bpmnModel, processVariables);
            return convertList(flowElements, flowElement -> buildNotRunApproveNodeForBpmn(startUserId, bpmnModel,
                    processDefinitionInfo, processVariables, flowElement, runActivityIds));
        }
        // 情况二：SIMPLE 设计器
        if (Objects.equals(BpmModelTypeEnum.SIMPLE.getType(), processDefinitionInfo.getModelType())) {
            BpmSimpleModelNodeVO simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
            List<BpmSimpleModelNodeVO> simpleNodes = SimpleModelUtils.simulateProcess(simpleModel, processVariables);
            return convertList(simpleNodes, simpleNode -> buildNotRunApproveNodeForSimple(startUserId, bpmnModel,
                    processDefinitionInfo, processVariables, simpleNode, runActivityIds));
        }
        throw new IllegalArgumentException("未知设计器类型：" + processDefinitionInfo.getModelType());
    }

    private ActivityNode buildNotRunApproveNodeForSimple(Long startUserId, BpmnModel bpmnModel,
                                                         BpmProcessDefinitionInfoDO processDefinitionInfo, Map<String, Object> processVariables,
                                                         BpmSimpleModelNodeVO node, Set<String> runActivityIds) {
        // TODO @芋艿：【可优化】在驳回场景下，未来的预测准确性不高。原因是，驳回后，HistoricActivityInstance 包括了历史的操作，不是只有 startEvent 到当前节点的记录
        if (runActivityIds.contains(node.getId())) {
            return null;
        }

        ActivityNode activityNode = new ActivityNode().setId(node.getId()).setName(node.getName())
                .setNodeType(node.getType()).setCandidateStrategy(node.getCandidateStrategy())
                .setStatus(BpmTaskStatusEnum.NOT_START.getStatus());

        // 1. 开始节点/审批节点
        if (ObjectUtils.equalsAny(node.getType(),
                BpmSimpleModelNodeType.START_USER_NODE.getType(),
                BpmSimpleModelNodeType.APPROVE_NODE.getType())) {
            List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, node.getId(),
                    startUserId, processDefinitionInfo.getProcessDefinitionId(), processVariables);
            activityNode.setCandidateUserIds(candidateUserIds);
            return activityNode;
        }

        // 2. 结束节点
        if (BpmSimpleModelNodeType.END_NODE.getType().equals(node.getType())) {
            return activityNode;
        }

        // 3. 抄送节点
        if (CollUtil.isEmpty(runActivityIds) && // 流程发起时：需要展示抄送节点，用于选择抄送人
                BpmSimpleModelNodeType.COPY_NODE.getType().equals(node.getType())) {
            return activityNode;
        }
        return null;
    }

    private ActivityNode buildNotRunApproveNodeForBpmn(Long startUserId, BpmnModel bpmnModel,
                                                       BpmProcessDefinitionInfoDO processDefinitionInfo, Map<String, Object> processVariables,
                                                       FlowElement node, Set<String> runActivityIds) {
        if (runActivityIds.contains(node.getId())) {
            return null;
        }
        ActivityNode activityNode = new ActivityNode().setId(node.getId()).setStatus(BpmTaskStatusEnum.NOT_START.getStatus());

        // 1. 开始节点
        if (node instanceof StartEvent) {
            return activityNode.setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
                    .setNodeType(BpmSimpleModelNodeType.START_USER_NODE.getType());
        }

        // 2. 审批节点
        if (node instanceof UserTask) {
            List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, node.getId(),
                    startUserId, processDefinitionInfo.getProcessDefinitionId(), processVariables);
            return activityNode.setName(node.getName()).setNodeType(BpmSimpleModelNodeType.APPROVE_NODE.getType())
                    .setCandidateStrategy(BpmnModelUtils.parseCandidateStrategy(node))
                    .setCandidateUserIds(candidateUserIds);
        }

        // 3. 结束节点
        if (node instanceof EndEvent) {
            return activityNode.setName(BpmSimpleModelNodeType.END_NODE.getName())
                    .setNodeType(BpmSimpleModelNodeType.END_NODE.getType());
        }
        return null;
    }

    private List<Long> getTaskCandidateUserList(BpmnModel bpmnModel, String activityId,
                                                Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
        Set<Long> userIds = taskCandidateInvoker.calculateUsersByActivity(bpmnModel, activityId,
                startUserId, processDefinitionId, processVariables);
        return new ArrayList<>(userIds);
    }

    @Override
    public BpmProcessInstanceBpmnModelViewRespVO getProcessInstanceBpmnModelView(String id) {
        // 1.1 获得流程实例
        HistoricProcessInstance processInstance = getHistoricProcessInstance(id);
        if (processInstance == null) {
            return null;
        }
        // 1.2 获得流程定义
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(processInstance.getProcessDefinitionId());
        if (bpmnModel == null) {
            return null;
        }
        BpmSimpleModelNodeVO simpleModel = null;
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(
                processInstance.getProcessDefinitionId());
        if (processDefinitionInfo != null && BpmModelTypeEnum.SIMPLE.getType().equals(processDefinitionInfo.getModelType())) {
            simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
        }
        // 1.3 获得流程实例对应的活动实例列表 + 任务列表
        List<HistoricActivityInstance> activities = taskService.getActivityListByProcessInstanceId(id);
        List<HistoricTaskInstance> tasks = taskService.getTaskListByProcessInstanceId(id, true);

        // 2.1 拼接进度信息
        Set<String> unfinishedTaskActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() == null);
        Set<String> finishedTaskActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() != null
                        && ObjectUtil.notEqual(activityInstance.getActivityType(), BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW));
        Set<String> finishedSequenceFlowActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() != null
                        && ObjectUtil.equals(activityInstance.getActivityType(), BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW));
        // 特殊：会签情况下，会有部分已完成（审批）、部分未完成（待审批），此时需要 finishedTaskActivityIds 移除掉
        unfinishedTaskActivityIds.removeAll(finishedTaskActivityIds);
        // 特殊：如果流程实例被拒绝，则需要计算是哪个活动节点。
        // 注意，只取最后一个。因为会存在多次拒绝的情况，拒绝驳回到指定节点
        Set<String> rejectTaskActivityIds = CollUtil.newHashSet();
        if (BpmProcessInstanceStatusEnum.isRejectStatus(FlowableUtils.getProcessInstanceStatus(processInstance))) {
            tasks.stream()
                    .filter(task -> BpmTaskStatusEnum.isRejectStatus(FlowableUtils.getTaskStatus(task)))
                    .max(Comparator.comparing(HistoricTaskInstance::getEndTime))
                    .ifPresent(reject -> rejectTaskActivityIds.add(reject.getTaskDefinitionKey()));
            finishedTaskActivityIds.removeAll(rejectTaskActivityIds);
        }

        // 2.2 拼接基础信息
        Set<Long> userIds = BpmProcessInstanceConvert.INSTANCE.parseUserIds02(processInstance, tasks);
        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
        Map<Long, DeptRespDTO> deptMap = deptApi.getDeptMap(convertSet(userMap.values(), AdminUserRespDTO::getDeptId));
        return BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceBpmnModelView(processInstance, tasks, bpmnModel, simpleModel,
                unfinishedTaskActivityIds, finishedTaskActivityIds, finishedSequenceFlowActivityIds, rejectTaskActivityIds,
                userMap, deptMap);
    }

    // ========== Update 写入相关方法 ==========

    @Override
    @Transactional(rollbackFor = Exception.class)
    public String createProcessInstance(Long userId, @Valid BpmProcessInstanceCreateReqVO createReqVO) {
        // 获得流程定义
        ProcessDefinition definition = processDefinitionService.getProcessDefinition(createReqVO.getProcessDefinitionId());
        // 发起流程
        return createProcessInstance0(userId, definition, createReqVO.getVariables(), null,
                createReqVO.getStartUserSelectAssignees());
    }

    @Override
    public String createProcessInstance(Long userId, @Valid BpmProcessInstanceCreateReqDTO createReqDTO) {
        // 获得流程定义
        ProcessDefinition definition = processDefinitionService.getActiveProcessDefinition(createReqDTO.getProcessDefinitionKey());
        // 发起流程
        return createProcessInstance0(userId, definition, createReqDTO.getVariables(), createReqDTO.getBusinessKey(),
                createReqDTO.getStartUserSelectAssignees());
    }

    private String createProcessInstance0(Long userId, ProcessDefinition definition,
                                          Map<String, Object> variables, String businessKey,
                                          Map<String, List<Long>> startUserSelectAssignees) {
        // 1.1 校验流程定义
        if (definition == null) {
            throw exception(PROCESS_DEFINITION_NOT_EXISTS);
        }
        if (definition.isSuspended()) {
            throw exception(PROCESS_DEFINITION_IS_SUSPENDED);
        }
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(definition.getId());
        if (processDefinitionInfo == null) {
            throw exception(PROCESS_DEFINITION_NOT_EXISTS);
        }
        // 1.2 校验是否能够发起
        if (!processDefinitionService.canUserStartProcessDefinition(processDefinitionInfo, userId)) {
            throw exception(PROCESS_INSTANCE_START_USER_CAN_START);
        }
        // 1.3 校验发起人自选审批人
        validateStartUserSelectAssignees(definition, startUserSelectAssignees);

        // 2. 创建流程实例
        if (variables == null) {
            variables = new HashMap<>();
        }
        FlowableUtils.filterProcessInstanceFormVariable(variables); // 过滤一下，避免 ProcessInstance 系统级的变量被占用
        variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_START_USER_ID, userId); // 设置流程变量，发起人 ID
        variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, // 流程实例状态：审批中
                BpmProcessInstanceStatusEnum.RUNNING.getStatus());
        if (CollUtil.isNotEmpty(startUserSelectAssignees)) {
            variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_START_USER_SELECT_ASSIGNEES, startUserSelectAssignees);
        }
        ProcessInstance instance = runtimeService.createProcessInstanceBuilder()
                .processDefinitionId(definition.getId())
                .businessKey(businessKey)
                .name(definition.getName().trim())
                .variables(variables)
                .start();
        return instance.getId();
    }

    private void validateStartUserSelectAssignees(ProcessDefinition definition, Map<String, List<Long>> startUserSelectAssignees) {
        // 1. 获得发起人自选审批人的 UserTask/ServiceTask 列表
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(definition.getId());
        List<Task> tasks = BpmTaskCandidateStartUserSelectStrategy.getStartUserSelectTaskList(bpmnModel);
        if (CollUtil.isEmpty(tasks)) {
            return;
        }

        // 2. 校验发起人自选审批人的审批人和抄送人是否都配置了
        tasks.forEach(task -> {
            List<Long> assignees = startUserSelectAssignees != null ? startUserSelectAssignees.get(task.getId()) : null;
            if (CollUtil.isEmpty(assignees)) {
                throw exception(PROCESS_INSTANCE_START_USER_SELECT_ASSIGNEES_NOT_CONFIG, task.getName());
            }
            Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(assignees);
            assignees.forEach(assignee -> {
                if (userMap.get(assignee) == null) {
                    throw exception(PROCESS_INSTANCE_START_USER_SELECT_ASSIGNEES_NOT_EXISTS, task.getName(), assignee);
                }
            });
        });
    }

    @Override
    public void cancelProcessInstanceByStartUser(Long userId, @Valid BpmProcessInstanceCancelReqVO cancelReqVO) {
        // 1.1 校验流程实例存在
        ProcessInstance instance = getProcessInstance(cancelReqVO.getId());
        if (instance == null) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_EXISTS);
        }
        // 1.2 只能取消自己的
        if (!Objects.equals(instance.getStartUserId(), String.valueOf(userId))) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_SELF);
        }

        // 2. 取消流程
        updateProcessInstanceCancel(cancelReqVO.getId(),
                BpmReasonEnum.CANCEL_PROCESS_INSTANCE_BY_START_USER.format(cancelReqVO.getReason()));
    }

    @Override
    public void cancelProcessInstanceByAdmin(Long userId, BpmProcessInstanceCancelReqVO cancelReqVO) {
        // 1.1 校验流程实例存在
        ProcessInstance instance = getProcessInstance(cancelReqVO.getId());
        if (instance == null) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_EXISTS);
        }

        // 2. 取消流程
        AdminUserRespDTO user = adminUserApi.getUser(userId).getCheckedData();
        updateProcessInstanceCancel(cancelReqVO.getId(),
                BpmReasonEnum.CANCEL_PROCESS_INSTANCE_BY_ADMIN.format(user.getNickname(), cancelReqVO.getReason()));
    }

    private void updateProcessInstanceCancel(String id, String reason) {
        // 1. 更新流程实例 status
        runtimeService.setVariable(id, BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS,
                BpmProcessInstanceStatusEnum.CANCEL.getStatus());
        runtimeService.setVariable(id, BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON, reason);

        // 2. 结束流程
        taskService.moveTaskToEnd(id);
    }

    @Override
    public void updateProcessInstanceReject(ProcessInstance processInstance, String reason) {
        runtimeService.setVariable(processInstance.getProcessInstanceId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS,
                BpmProcessInstanceStatusEnum.REJECT.getStatus());
        runtimeService.setVariable(processInstance.getProcessInstanceId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON,
                BpmReasonEnum.REJECT_TASK.format(reason));
    }

    // ========== Event 事件相关方法 ==========

    @Override
    public void processProcessInstanceCompleted(ProcessInstance instance) {
        // 注意：需要基于 instance 设置租户编号，避免 Flowable 内部异步时，丢失租户编号
        FlowableUtils.execute(instance.getTenantId(), () -> {
            // 1.1 获取当前状态
            Integer status = (Integer) instance.getProcessVariables().get(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS);
            String reason = (String) instance.getProcessVariables().get(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON);
            // 1.2 当流程状态还是审批状态中，说明审批通过了，则变更下它的状态
            // 为什么这么处理？因为流程完成，并且完成了，说明审批通过了
            if (Objects.equals(status, BpmProcessInstanceStatusEnum.RUNNING.getStatus())) {
                status = BpmProcessInstanceStatusEnum.APPROVE.getStatus();
                runtimeService.setVariable(instance.getId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, status);
            }

            // 2. 发送对应的消息通知
            if (Objects.equals(status, BpmProcessInstanceStatusEnum.APPROVE.getStatus())) {
                messageService.sendMessageWhenProcessInstanceApprove(BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceApproveMessage(instance));
            } else if (Objects.equals(status, BpmProcessInstanceStatusEnum.REJECT.getStatus())) {
                messageService.sendMessageWhenProcessInstanceReject(
                        BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceRejectMessage(instance, reason));
            }

            // 3. 发送流程实例的状态事件
            processInstanceEventPublisher.sendProcessInstanceResultEvent(
                    BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceStatusEvent(this, instance, status));
        });
    }

}

package com.iailab.module.bpm.service.task;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.collection.ListUtil;
import cn.hutool.core.lang.Assert;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import com.iailab.framework.common.pojo.PageResult;
import com.iailab.framework.common.util.date.DateUtils;
import com.iailab.framework.common.util.json.JsonUtils;
import com.iailab.framework.common.util.object.ObjectUtils;
import com.iailab.framework.common.util.object.PageUtils;
import com.iailab.module.bpm.api.task.dto.BpmProcessInstanceCreateReqDTO;
import com.iailab.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
import com.iailab.module.bpm.controller.admin.task.vo.instance.*;
import com.iailab.module.bpm.controller.admin.task.vo.task.BpmTaskRespVO;
import com.iailab.module.bpm.convert.task.BpmProcessInstanceConvert;
import com.iailab.module.bpm.dal.dataobject.definition.BpmProcessDefinitionInfoDO;
import com.iailab.module.bpm.enums.ErrorCodeConstants;
import com.iailab.module.bpm.enums.definition.BpmModelTypeEnum;
import com.iailab.module.bpm.enums.definition.BpmSimpleModelNodeType;
import com.iailab.module.bpm.enums.task.BpmProcessInstanceStatusEnum;
import com.iailab.module.bpm.enums.task.BpmReasonEnum;
import com.iailab.module.bpm.enums.task.BpmTaskStatusEnum;
import com.iailab.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateInvoker;
import com.iailab.module.bpm.framework.flowable.core.candidate.strategy.dept.BpmTaskCandidateStartUserSelectStrategy;
import com.iailab.module.bpm.framework.flowable.core.enums.BpmnModelConstants;
import com.iailab.module.bpm.framework.flowable.core.enums.BpmnVariableConstants;
import com.iailab.module.bpm.framework.flowable.core.event.BpmProcessInstanceEventPublisher;
import com.iailab.module.bpm.framework.flowable.core.util.BpmnModelUtils;
import com.iailab.module.bpm.framework.flowable.core.util.FlowableUtils;
import com.iailab.module.bpm.framework.flowable.core.util.SimpleModelUtils;
import com.iailab.module.bpm.service.definition.BpmProcessDefinitionService;
import com.iailab.module.bpm.service.message.BpmMessageService;
import com.iailab.module.system.api.dept.DeptApi;
import com.iailab.module.system.api.dept.dto.DeptRespDTO;
import com.iailab.module.system.api.user.AdminUserApi;
import com.iailab.module.system.api.user.dto.AdminUserRespDTO;
import lombok.extern.slf4j.Slf4j;
import org.flowable.bpmn.constants.BpmnXMLConstants;
import org.flowable.bpmn.model.*;
import org.flowable.engine.HistoryService;
import org.flowable.engine.RuntimeService;
import org.flowable.engine.history.HistoricActivityInstance;
import org.flowable.engine.history.HistoricProcessInstance;
import org.flowable.engine.history.HistoricProcessInstanceQuery;
import org.flowable.engine.repository.ProcessDefinition;
import org.flowable.engine.runtime.ProcessInstance;
import org.flowable.task.api.history.HistoricTaskInstance;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.validation.annotation.Validated;

import javax.annotation.Resource;
import javax.validation.Valid;
import java.util.*;

import static com.iailab.framework.common.exception.util.ServiceExceptionUtil.exception;
import static com.iailab.framework.common.util.collection.CollectionUtils.*;
import static com.iailab.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.ActivityNode;
import static com.iailab.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.ActivityNodeTask;
import static com.iailab.module.bpm.enums.ErrorCodeConstants.*;
import static com.iailab.module.bpm.framework.flowable.core.enums.BpmnModelConstants.START_USER_NODE_ID;
import static java.util.Arrays.asList;
import static java.util.Collections.singletonList;
import static org.flowable.bpmn.constants.BpmnXMLConstants.*;

/**
 * 流程实例 Service 实现类
 * <p>
 * ProcessDefinition & ProcessInstance & Execution & Task 的关系：
 * 1. <a href="https://blog.csdn.net/bobozai86/article/details/105210414" />
 * <p>
 * HistoricProcessInstance & ProcessInstance 的关系：
 * 1. <a href=" https://my.oschina.net/843294669/blog/71902" />
 * <p>
 * 简单来说，前者 = 历史 + 运行中的流程实例，后者仅是运行中的流程实例
 *
 * @author 芋道源码
 */
@Service
@Validated
@Slf4j
public class BpmProcessInstanceServiceImpl implements BpmProcessInstanceService {

    @Resource
    private RuntimeService runtimeService;
    @Resource
    private HistoryService historyService;

    @Resource
    private BpmProcessDefinitionService processDefinitionService;
    @Resource
    @Lazy // 避免循环依赖
    private BpmTaskService taskService;
    @Resource
    private BpmMessageService messageService;

    @Resource
    private AdminUserApi adminUserApi;
    @Resource
    private DeptApi deptApi;

    @Resource
    private BpmProcessInstanceEventPublisher processInstanceEventPublisher;

    @Resource
    private BpmTaskCandidateInvoker taskCandidateInvoker;

    // ========== Query 查询相关方法 ==========

    @Override
    public ProcessInstance getProcessInstance(String id) {
        return runtimeService.createProcessInstanceQuery()
                .includeProcessVariables()
                .processInstanceId(id)
                .singleResult();
    }

    @Override
    public List<ProcessInstance> getProcessInstances(Set<String> ids) {
        return runtimeService.createProcessInstanceQuery().processInstanceIds(ids).list();
    }

    @Override
    public HistoricProcessInstance getHistoricProcessInstance(String id) {
        return historyService.createHistoricProcessInstanceQuery().processInstanceId(id).includeProcessVariables().singleResult();
    }

    @Override
    public List<HistoricProcessInstance> getHistoricProcessInstances(Set<String> ids) {
        return historyService.createHistoricProcessInstanceQuery().processInstanceIds(ids).list();
    }

    @Override
    public PageResult<HistoricProcessInstance> getProcessInstancePage(Long userId,
                                                                      BpmProcessInstancePageReqVO pageReqVO) {
        // 通过 BpmProcessInstanceExtDO 表，先查询到对应的分页
        HistoricProcessInstanceQuery processInstanceQuery = historyService.createHistoricProcessInstanceQuery()
                .includeProcessVariables()
                .processInstanceTenantId(FlowableUtils.getTenantId())
                .orderByProcessInstanceStartTime().desc();
        if (userId != null) { // 【我的流程】菜单时，需要传递该字段
            processInstanceQuery.startedBy(String.valueOf(userId));
        } else if (pageReqVO.getStartUserId() != null) { // 【管理流程】菜单时，才会传递该字段
            processInstanceQuery.startedBy(String.valueOf(pageReqVO.getStartUserId()));
        }
        if (StrUtil.isNotEmpty(pageReqVO.getName())) {
            processInstanceQuery.processInstanceNameLike("%" + pageReqVO.getName() + "%");
        }
        if (StrUtil.isNotEmpty(pageReqVO.getProcessDefinitionKey())) {
            processInstanceQuery.processDefinitionKey(pageReqVO.getProcessDefinitionKey());
        }
        if (StrUtil.isNotEmpty(pageReqVO.getCategory())) {
            processInstanceQuery.processDefinitionCategory(pageReqVO.getCategory());
        }
        if (pageReqVO.getStatus() != null) {
            processInstanceQuery.variableValueEquals(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, pageReqVO.getStatus());
        }
        if (ArrayUtil.isNotEmpty(pageReqVO.getCreateTime())) {
            processInstanceQuery.startedAfter(DateUtils.of(pageReqVO.getCreateTime()[0]));
            processInstanceQuery.startedBefore(DateUtils.of(pageReqVO.getCreateTime()[1]));
        }
        // 查询数量
        long processInstanceCount = processInstanceQuery.count();
        if (processInstanceCount == 0) {
            return PageResult.empty(processInstanceCount);
        }
        // 查询列表
        List<HistoricProcessInstance> processInstanceList = processInstanceQuery.listPage(PageUtils.getStart(pageReqVO), pageReqVO.getPageSize());
        return new PageResult<>(processInstanceList, processInstanceCount);
    }


    private Map<String, String> getFormFieldsPermission(BpmnModel bpmnModel,
                                                        String activityId, String taskId) {
        // 1. 获取流程活动编号。流程活动 Id 为空事，从流程任务中获取流程活动 Id
        if (StrUtil.isEmpty(activityId) && StrUtil.isNotEmpty(taskId)) {
            activityId = Optional.ofNullable(taskService.getHistoricTask(taskId))
                    .map(HistoricTaskInstance::getTaskDefinitionKey).orElse(null);
        }
        if (StrUtil.isEmpty(activityId)) {
            return null;
        }

        // 2. 从 BpmnModel 中解析表单字段权限
        return BpmnModelUtils.parseFormFieldsPermission(bpmnModel, activityId);
    }

    @Override
    public BpmApprovalDetailRespVO getApprovalDetail(Long loginUserId, BpmApprovalDetailReqVO reqVO) {
        // 1.1 从 reqVO 中，读取公共变量
        Long startUserId = loginUserId; // 流程发起人
        HistoricProcessInstance historicProcessInstance = null; // 流程实例
        Integer processInstanceStatus = BpmProcessInstanceStatusEnum.NOT_START.getStatus(); // 流程状态
        Map<String, Object> processVariables = reqVO.getProcessVariables(); // 流程变量
        // 1.2 如果是流程已发起的场景，则使用流程实例的数据
        if (reqVO.getProcessInstanceId() != null) {
            historicProcessInstance = getHistoricProcessInstance(reqVO.getProcessInstanceId());
            if (historicProcessInstance == null) {
                throw exception(ErrorCodeConstants.PROCESS_INSTANCE_NOT_EXISTS);
            }
            startUserId = Long.valueOf(historicProcessInstance.getStartUserId());
            processInstanceStatus = FlowableUtils.getProcessInstanceStatus(historicProcessInstance);
            processVariables = historicProcessInstance.getProcessVariables();
        }
        // 1.3 读取其它相关数据
        ProcessDefinition processDefinition = processDefinitionService.getProcessDefinition(
                historicProcessInstance != null ? historicProcessInstance.getProcessDefinitionId() : reqVO.getProcessDefinitionId());
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(processDefinition.getId());
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(processDefinition.getId());

        // 2.1 已结束 + 进行中的活动节点
        List<ActivityNode> endActivityNodes = null; // 已结束的审批信息
        List<ActivityNode> runActivityNodes = null; // 进行中的审批信息
        List<HistoricActivityInstance> activities = null; // 流程实例列表
        if (reqVO.getProcessInstanceId() != null) {
            activities = taskService.getActivityListByProcessInstanceId(reqVO.getProcessInstanceId());
            List<HistoricTaskInstance> tasks = taskService.getTaskListByProcessInstanceId(reqVO.getProcessInstanceId(), true);
            endActivityNodes = getEndActivityNodeList(startUserId, bpmnModel, processDefinitionInfo,
                    historicProcessInstance, processInstanceStatus, activities, tasks);
            runActivityNodes = getRunApproveNodeList(startUserId, bpmnModel, processDefinition, processVariables, activities, tasks);
        }

        // 2.2 流程已经结束，直接 return，无需预测
        if (BpmProcessInstanceStatusEnum.isProcessEndStatus(processInstanceStatus)) {
            return buildApprovalDetail(reqVO, bpmnModel, processDefinition, processDefinitionInfo, historicProcessInstance,
                    processInstanceStatus, endActivityNodes, runActivityNodes, null, null);
        }

        // 3.1 计算当前登录用户的待办任务
        // TODO @jason：有一个极端情况，如果一个用户有 2 个 task A 和 B，A 已经通过，B 需要审核。这个时，通过 A 进来，todo 拿到 B，会不会表单权限不一致哈。
        BpmTaskRespVO todoTask = taskService.getFirstTodoTask(loginUserId, reqVO.getProcessInstanceId());

        // 3.2 预测未运行节点的审批信息
        List<ActivityNode> simulateActivityNodes = getSimulateApproveNodeList(startUserId, bpmnModel, processDefinitionInfo,
                processVariables, activities);

        // 4. 拼接最终数据
        return buildApprovalDetail(reqVO, bpmnModel, processDefinition, processDefinitionInfo, historicProcessInstance,
                processInstanceStatus, endActivityNodes, runActivityNodes, simulateActivityNodes, todoTask);
    }

    /**
     * 拼接审批详情的最终数据
     * <p>
     * 主要是，拼接审批人的用户信息、部门信息
     */
    private BpmApprovalDetailRespVO buildApprovalDetail(BpmApprovalDetailReqVO reqVO,
                                                        BpmnModel bpmnModel,
                                                        ProcessDefinition processDefinition,
                                                        BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                        HistoricProcessInstance processInstance,
                                                        Integer processInstanceStatus,
                                                        List<ActivityNode> endApprovalNodeInfos,
                                                        List<ActivityNode> runningApprovalNodeInfos,
                                                        List<ActivityNode> simulateApprovalNodeInfos,
                                                        BpmTaskRespVO todoTask) {
        // 1. 获取所有需要读取用户信息的 userIds
        List<ActivityNode> approveNodes = newArrayList(asList(endApprovalNodeInfos, runningApprovalNodeInfos, simulateApprovalNodeInfos));
        Set<Long> userIds = BpmProcessInstanceConvert.INSTANCE.parseUserIds(processInstance, approveNodes, todoTask);
        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
        Map<Long, DeptRespDTO> deptMap = deptApi.getDeptMap(convertSet(userMap.values(), AdminUserRespDTO::getDeptId));


        // 2. 表单权限
        String taskId = reqVO.getTaskId() == null && todoTask != null ? todoTask.getId() : reqVO.getTaskId();
        Map<String, String> formFieldsPermission = getFormFieldsPermission(bpmnModel, reqVO.getActivityId(), taskId);

        // 3. 拼接数据
        return BpmProcessInstanceConvert.INSTANCE.buildApprovalDetail(bpmnModel, processDefinition, processDefinitionInfo, processInstance,
                processInstanceStatus, approveNodes, todoTask, formFieldsPermission, userMap, deptMap);
    }

    /**
     * 获得【已结束】的活动节点们
     */
    private List<ActivityNode> getEndActivityNodeList(Long startUserId, BpmnModel bpmnModel,
                                                      BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                      HistoricProcessInstance historicProcessInstance, Integer processInstanceStatus,
                                                      List<HistoricActivityInstance> activities, List<HistoricTaskInstance> tasks) {
        // 遍历 tasks 列表，只处理已结束的 UserTask
        // 为什么不通过 activities 呢？因为，加签场景下，它只存在于 tasks，没有 activities，导致如果遍历 activities 的话，它无法成为一个节点
        List<HistoricTaskInstance> endTasks = filterList(tasks, task -> task.getEndTime() != null);
        List<ActivityNode> approvalNodes = convertList(endTasks, task -> {
            FlowElement flowNode = BpmnModelUtils.getFlowElementById(bpmnModel, task.getTaskDefinitionKey());
            ActivityNode activityNode = new ActivityNode().setId(task.getTaskDefinitionKey()).setName(task.getName())
                    .setNodeType(START_USER_NODE_ID.equals(task.getTaskDefinitionKey()) ?
                            BpmSimpleModelNodeType.START_USER_NODE.getType() : BpmSimpleModelNodeType.APPROVE_NODE.getType())
                    .setStatus(FlowableUtils.getTaskStatus(task))
                    .setCandidateStrategy(BpmnModelUtils.parseCandidateStrategy(flowNode))
                    .setStartTime(DateUtils.of(task.getCreateTime())).setEndTime(DateUtils.of(task.getEndTime()))
                    .setTasks(singletonList(BpmProcessInstanceConvert.INSTANCE.buildApprovalTaskInfo(task)));
            // 如果是取消状态，则跳过
            if (BpmTaskStatusEnum.isCancelStatus(activityNode.getStatus())) {
                return null;
            }
            return activityNode;
        });

        // 遍历 activities，只处理已结束的 StartEvent、EndEvent
        List<HistoricActivityInstance> endActivities = filterList(activities, activity -> activity.getEndTime() != null
                && (StrUtil.equalsAny(activity.getActivityType(), ELEMENT_EVENT_START, ELEMENT_EVENT_END)));
        endActivities.forEach(activity -> {
            // StartEvent：只处理 BPMN 的场景。因为，SIMPLE 情况下，已经有 START_USER_NODE 节点
            if (ELEMENT_EVENT_START.equals(activity.getActivityType())
                    && BpmModelTypeEnum.BPMN.getType().equals(processDefinitionInfo.getModelType())) {
                ActivityNodeTask startTask = new ActivityNodeTask().setId(BpmnModelConstants.START_USER_NODE_ID)
                        .setAssignee(startUserId).setStatus(BpmTaskStatusEnum.APPROVE.getStatus());
                ActivityNode startNode = new ActivityNode().setId(startTask.getId())
                        .setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
                        .setNodeType(BpmSimpleModelNodeType.START_USER_NODE.getType())
                        .setStatus(startTask.getStatus()).setTasks(ListUtil.of(startTask))
                        .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
                approvalNodes.add(0, startNode);
                return;
            }
            // EndEvent
            if (ELEMENT_EVENT_END.equals(activity.getActivityType())) {
                if (BpmProcessInstanceStatusEnum.isRejectStatus(processInstanceStatus)) {
                    // 拒绝情况下，不需要展示 EndEvent 结束节点。原因是：前端已经展示 x 效果，无需重复展示
                    return;
                }
                ActivityNode endNode = new ActivityNode().setId(activity.getId())
                        .setName(BpmSimpleModelNodeType.END_NODE.getName())
                        .setNodeType(BpmSimpleModelNodeType.END_NODE.getType()).setStatus(processInstanceStatus)
                        .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
                String reason = FlowableUtils.getProcessInstanceReason(historicProcessInstance);
                if (StrUtil.isNotEmpty(reason)) {
                    endNode.setTasks(singletonList(new ActivityNodeTask().setId(endNode.getId())
                            .setStatus(endNode.getStatus()).setReason(reason)));
                }
                approvalNodes.add(endNode);
            }
        });
        return approvalNodes;
    }

    /**
     * 获得【进行中】的活动节点们
     */
    private List<ActivityNode> getRunApproveNodeList(Long startUserId,
                                                     BpmnModel bpmnModel,
                                                     ProcessDefinition processDefinition,
                                                     Map<String, Object> processVariables,
                                                     List<HistoricActivityInstance> activities,
                                                     List<HistoricTaskInstance> tasks) {
        // 构建运行中的任务，基于 activityId 分组
        List<HistoricActivityInstance> runActivities = filterList(activities, activity -> activity.getEndTime() == null
                && (StrUtil.equalsAny(activity.getActivityType(), ELEMENT_TASK_USER)));
        Map<String, List<HistoricActivityInstance>> runningTaskMap = convertMultiMap(runActivities, HistoricActivityInstance::getActivityId);

        // 按照 activityId 分组，构建 ApprovalNodeInfo 节点
        Map<String, HistoricTaskInstance> taskMap = convertMap(tasks, HistoricTaskInstance::getId);
        return convertList(runningTaskMap.entrySet(), entry -> {
            String activityId = entry.getKey();
            List<HistoricActivityInstance> taskActivities = entry.getValue();
            // 构建活动节点
            FlowElement flowNode = BpmnModelUtils.getFlowElementById(bpmnModel, activityId);
            HistoricActivityInstance firstActivity = CollUtil.getFirst(taskActivities); // 取第一个任务，会签/或签的任务，开始时间相同
            ActivityNode activityNode = new ActivityNode().setId(firstActivity.getActivityId()).setName(firstActivity.getActivityName())
                    .setNodeType(BpmSimpleModelNodeType.APPROVE_NODE.getType()).setStatus(BpmTaskStatusEnum.RUNNING.getStatus())
                    .setCandidateStrategy(BpmnModelUtils.parseCandidateStrategy(flowNode))
                    .setStartTime(DateUtils.of(CollUtil.getFirst(taskActivities).getStartTime()))
                    .setTasks(new ArrayList<>());
            // 处理每个任务的 tasks 属性
            for (HistoricActivityInstance activity : taskActivities) {
                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                activityNode.getTasks().add(BpmProcessInstanceConvert.INSTANCE.buildApprovalTaskInfo(task));
                // 加签子任务，需要过滤掉已经完成的加签子任务
                List<HistoricTaskInstance> childrenTasks = filterList(
                        taskService.getAllChildrenTaskListByParentTaskId(activity.getTaskId(), tasks),
                        childTask -> childTask.getEndTime() == null);
                if (CollUtil.isNotEmpty(childrenTasks)) {
                    activityNode.getTasks().addAll(convertList(childrenTasks, BpmProcessInstanceConvert.INSTANCE::buildApprovalTaskInfo));
                }
            }
            // 处理每个任务的 candidateUsers 属性：如果是依次审批，需要预测它的后续审批人。因为 Task 是审批完一个，创建一个新的 Task
            if (BpmnModelUtils.isSequentialUserTask(flowNode)) {
                List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, flowNode.getId(),
                        startUserId, processDefinition.getId(), processVariables);
                // 截取当前审批人位置后面的候选人，不包含当前审批人
                ActivityNodeTask approvalTaskInfo = CollUtil.getFirst(activityNode.getTasks());
                Assert.notNull(approvalTaskInfo, "任务不能为空");
                int index = CollUtil.indexOf(candidateUserIds, userId -> ObjectUtils.equalsAny(userId, approvalTaskInfo.getOwner(),
                        approvalTaskInfo.getAssignee())); // 委派或者向前加签情况，需要先比较 owner
                activityNode.setCandidateUserIds(CollUtil.sub(candidateUserIds, index + 1, candidateUserIds.size()));
            }
            return activityNode;
        });
    }

    /**
     * 获得【预测（未来）】的活动节点们
     */
    private List<ActivityNode> getSimulateApproveNodeList(Long startUserId, BpmnModel bpmnModel,
                                                          BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                          Map<String, Object> processVariables,
                                                          List<HistoricActivityInstance> activities) {
        // TODO @芋艿：【可优化】在驳回场景下，未来的预测准确性不高。原因是，驳回后，HistoricActivityInstance 包括了历史的操作，不是只有 startEvent 到当前节点的记录
        Set<String> runActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId);
        // 情况一：BPMN 设计器
        if (Objects.equals(BpmModelTypeEnum.BPMN.getType(), processDefinitionInfo.getModelType())) {
            List<FlowElement> flowElements = BpmnModelUtils.simulateProcess(bpmnModel, processVariables);
            return convertList(flowElements, flowElement -> buildNotRunApproveNodeForBpmn(startUserId, bpmnModel,
                    processDefinitionInfo, processVariables, flowElement, runActivityIds));
        }
        // 情况二：SIMPLE 设计器
        if (Objects.equals(BpmModelTypeEnum.SIMPLE.getType(), processDefinitionInfo.getModelType())) {
            BpmSimpleModelNodeVO simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
            List<BpmSimpleModelNodeVO> simpleNodes = SimpleModelUtils.simulateProcess(simpleModel, processVariables);
            return convertList(simpleNodes, simpleNode -> buildNotRunApproveNodeForSimple(startUserId, bpmnModel,
                    processDefinitionInfo, processVariables, simpleNode, runActivityIds));
        }
        throw new IllegalArgumentException("未知设计器类型：" + processDefinitionInfo.getModelType());
    }

    private ActivityNode buildNotRunApproveNodeForSimple(Long startUserId, BpmnModel bpmnModel,
                                                         BpmProcessDefinitionInfoDO processDefinitionInfo, Map<String, Object> processVariables,
                                                         BpmSimpleModelNodeVO node, Set<String> runActivityIds) {
        // TODO @芋艿：【可优化】在驳回场景下，未来的预测准确性不高。原因是，驳回后，HistoricActivityInstance 包括了历史的操作，不是只有 startEvent 到当前节点的记录
        if (runActivityIds.contains(node.getId())) {
            return null;
        }

        ActivityNode activityNode = new ActivityNode().setId(node.getId()).setName(node.getName())
                .setNodeType(node.getType()).setCandidateStrategy(node.getCandidateStrategy())
                .setStatus(BpmTaskStatusEnum.NOT_START.getStatus());

        // 1. 开始节点/审批节点
        if (ObjectUtils.equalsAny(node.getType(),
                BpmSimpleModelNodeType.START_USER_NODE.getType(),
                BpmSimpleModelNodeType.APPROVE_NODE.getType())) {
            List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, node.getId(),
                    startUserId, processDefinitionInfo.getProcessDefinitionId(), processVariables);
            activityNode.setCandidateUserIds(candidateUserIds);
            return activityNode;
        }

        // 2. 结束节点
        if (BpmSimpleModelNodeType.END_NODE.getType().equals(node.getType())) {
            return activityNode;
        }

        // 3. 抄送节点
        if (CollUtil.isEmpty(runActivityIds) && // 流程发起时：需要展示抄送节点，用于选择抄送人
                BpmSimpleModelNodeType.COPY_NODE.getType().equals(node.getType())) {
            return activityNode;
        }
        return null;
    }

    private ActivityNode buildNotRunApproveNodeForBpmn(Long startUserId, BpmnModel bpmnModel,
                                                       BpmProcessDefinitionInfoDO processDefinitionInfo, Map<String, Object> processVariables,
                                                       FlowElement node, Set<String> runActivityIds) {
        if (runActivityIds.contains(node.getId())) {
            return null;
        }
        ActivityNode activityNode = new ActivityNode().setId(node.getId()).setStatus(BpmTaskStatusEnum.NOT_START.getStatus());

        // 1. 开始节点
        if (node instanceof StartEvent) {
            return activityNode.setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
                    .setNodeType(BpmSimpleModelNodeType.START_USER_NODE.getType());
        }

        // 2. 审批节点
        if (node instanceof UserTask) {
            List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, node.getId(),
                    startUserId, processDefinitionInfo.getProcessDefinitionId(), processVariables);
            return activityNode.setName(node.getName()).setNodeType(BpmSimpleModelNodeType.APPROVE_NODE.getType())
                    .setCandidateStrategy(BpmnModelUtils.parseCandidateStrategy(node))
                    .setCandidateUserIds(candidateUserIds);
        }

        // 3. 结束节点
        if (node instanceof EndEvent) {
            return activityNode.setName(BpmSimpleModelNodeType.END_NODE.getName())
                    .setNodeType(BpmSimpleModelNodeType.END_NODE.getType());
        }
        return null;
    }

    private List<Long> getTaskCandidateUserList(BpmnModel bpmnModel, String activityId,
                                                Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
        Set<Long> userIds = taskCandidateInvoker.calculateUsersByActivity(bpmnModel, activityId,
                startUserId, processDefinitionId, processVariables);
        return new ArrayList<>(userIds);
    }

    @Override
    public BpmProcessInstanceBpmnModelViewRespVO getProcessInstanceBpmnModelView(String id) {
        // 1.1 获得流程实例
        HistoricProcessInstance processInstance = getHistoricProcessInstance(id);
        if (processInstance == null) {
            return null;
        }
        // 1.2 获得流程定义
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(processInstance.getProcessDefinitionId());
        if (bpmnModel == null) {
            return null;
        }
        BpmSimpleModelNodeVO simpleModel = null;
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(
                processInstance.getProcessDefinitionId());
        if (processDefinitionInfo != null && BpmModelTypeEnum.SIMPLE.getType().equals(processDefinitionInfo.getModelType())) {
            simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
        }
        // 1.3 获得流程实例对应的活动实例列表 + 任务列表
        List<HistoricActivityInstance> activities = taskService.getActivityListByProcessInstanceId(id);
        List<HistoricTaskInstance> tasks = taskService.getTaskListByProcessInstanceId(id, true);

        // 2.1 拼接进度信息
        Set<String> unfinishedTaskActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() == null);
        Set<String> finishedTaskActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() != null
                        && ObjectUtil.notEqual(activityInstance.getActivityType(), BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW));
        Set<String> finishedSequenceFlowActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() != null
                        && ObjectUtil.equals(activityInstance.getActivityType(), BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW));
        // 特殊：会签情况下，会有部分已完成（审批）、部分未完成（待审批），此时需要 finishedTaskActivityIds 移除掉
        finishedTaskActivityIds.removeAll(unfinishedTaskActivityIds);
        // 特殊：如果流程实例被拒绝，则需要计算是哪个活动节点。
        // 注意，只取最后一个。因为会存在多次拒绝的情况，拒绝驳回到指定节点
        Set<String> rejectTaskActivityIds = CollUtil.newHashSet();
        if (BpmProcessInstanceStatusEnum.isRejectStatus(FlowableUtils.getProcessInstanceStatus(processInstance))) {
            tasks.stream()
                    .filter(task -> BpmTaskStatusEnum.isRejectStatus(FlowableUtils.getTaskStatus(task)))
                    .max(Comparator.comparing(HistoricTaskInstance::getEndTime))
                    .ifPresent(reject -> rejectTaskActivityIds.add(reject.getTaskDefinitionKey()));
            finishedTaskActivityIds.removeAll(rejectTaskActivityIds);
        }

        // 2.2 拼接基础信息
        Set<Long> userIds = BpmProcessInstanceConvert.INSTANCE.parseUserIds02(processInstance, tasks);
        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
        Map<Long, DeptRespDTO> deptMap = deptApi.getDeptMap(convertSet(userMap.values(), AdminUserRespDTO::getDeptId));
        return BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceBpmnModelView(processInstance, tasks, bpmnModel, simpleModel,
                unfinishedTaskActivityIds, finishedTaskActivityIds, finishedSequenceFlowActivityIds, rejectTaskActivityIds,
                userMap, deptMap);
    }

    // ========== Update 写入相关方法 ==========

    @Override
    @Transactional(rollbackFor = Exception.class)
    public String createProcessInstance(Long userId, @Valid BpmProcessInstanceCreateReqVO createReqVO) {
        // 获得流程定义
        ProcessDefinition definition = processDefinitionService.getProcessDefinition(createReqVO.getProcessDefinitionId());
        // 发起流程
        return createProcessInstance0(userId, definition, createReqVO.getVariables(), null,
                createReqVO.getStartUserSelectAssignees());
    }

    @Override
    public String createProcessInstance(Long userId, @Valid BpmProcessInstanceCreateReqDTO createReqDTO) {
        return FlowableUtils.executeAuthenticatedUserId(userId, () -> {
            // 获得流程定义
            ProcessDefinition definition = processDefinitionService.getActiveProcessDefinition(createReqDTO.getProcessDefinitionKey());
            // 发起流程
            return createProcessInstance0(userId, definition, createReqDTO.getVariables(), createReqDTO.getBusinessKey(),
                    createReqDTO.getStartUserSelectAssignees());
        });
    }

    private String createProcessInstance0(Long userId, ProcessDefinition definition,
                                          Map<String, Object> variables, String businessKey,
                                          Map<String, List<Long>> startUserSelectAssignees) {
        // 1.1 校验流程定义
        if (definition == null) {
            throw exception(PROCESS_DEFINITION_NOT_EXISTS);
        }
        if (definition.isSuspended()) {
            throw exception(PROCESS_DEFINITION_IS_SUSPENDED);
        }
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(definition.getId());
        if (processDefinitionInfo == null) {
            throw exception(PROCESS_DEFINITION_NOT_EXISTS);
        }
        // 1.2 校验是否能够发起
        if (!processDefinitionService.canUserStartProcessDefinition(processDefinitionInfo, userId)) {
            throw exception(PROCESS_INSTANCE_START_USER_CAN_START);
        }
        // 1.3 校验发起人自选审批人
        validateStartUserSelectAssignees(definition, startUserSelectAssignees);

        // 2. 创建流程实例
        if (variables == null) {
            variables = new HashMap<>();
        }
        FlowableUtils.filterProcessInstanceFormVariable(variables); // 过滤一下，避免 ProcessInstance 系统级的变量被占用
        variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_START_USER_ID, userId); // 设置流程变量，发起人 ID
        variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, // 流程实例状态：审批中
                BpmProcessInstanceStatusEnum.RUNNING.getStatus());
        if (CollUtil.isNotEmpty(startUserSelectAssignees)) {
            variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_START_USER_SELECT_ASSIGNEES, startUserSelectAssignees);
        }
        ProcessInstance instance = runtimeService.createProcessInstanceBuilder()
                .processDefinitionId(definition.getId())
                .businessKey(businessKey)
                .name(definition.getName().trim())
                .variables(variables)
                .start();
        return instance.getId();
    }

    private void validateStartUserSelectAssignees(ProcessDefinition definition, Map<String, List<Long>> startUserSelectAssignees) {
        // 1. 获得发起人自选审批人的 UserTask/ServiceTask 列表
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(definition.getId());
        List<Task> tasks = BpmTaskCandidateStartUserSelectStrategy.getStartUserSelectTaskList(bpmnModel);
        if (CollUtil.isEmpty(tasks)) {
            return;
        }

        // 2. 校验发起人自选审批人的审批人和抄送人是否都配置了
        tasks.forEach(task -> {
            List<Long> assignees = startUserSelectAssignees != null ? startUserSelectAssignees.get(task.getId()) : null;
            if (CollUtil.isEmpty(assignees)) {
                throw exception(PROCESS_INSTANCE_START_USER_SELECT_ASSIGNEES_NOT_CONFIG, task.getName());
            }
            Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(assignees);
            assignees.forEach(assignee -> {
                if (userMap.get(assignee) == null) {
                    throw exception(PROCESS_INSTANCE_START_USER_SELECT_ASSIGNEES_NOT_EXISTS, task.getName(), assignee);
                }
            });
        });
    }

    @Override
    public void cancelProcessInstanceByStartUser(Long userId, @Valid BpmProcessInstanceCancelReqVO cancelReqVO) {
        // 1.1 校验流程实例存在
        ProcessInstance instance = getProcessInstance(cancelReqVO.getId());
        if (instance == null) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_EXISTS);
        }
        // 1.2 只能取消自己的
        if (!Objects.equals(instance.getStartUserId(), String.valueOf(userId))) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_SELF);
        }

        // 2. 取消流程
        updateProcessInstanceCancel(cancelReqVO.getId(),
                BpmReasonEnum.CANCEL_PROCESS_INSTANCE_BY_START_USER.format(cancelReqVO.getReason()));
    }

    @Override
    public void cancelProcessInstanceByAdmin(Long userId, BpmProcessInstanceCancelReqVO cancelReqVO) {
        // 1.1 校验流程实例存在
        ProcessInstance instance = getProcessInstance(cancelReqVO.getId());
        if (instance == null) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_EXISTS);
        }

        // 2. 取消流程
        AdminUserRespDTO user = adminUserApi.getUser(userId).getCheckedData();
        updateProcessInstanceCancel(cancelReqVO.getId(),
                BpmReasonEnum.CANCEL_PROCESS_INSTANCE_BY_ADMIN.format(user.getNickname(), cancelReqVO.getReason()));
    }

    private void updateProcessInstanceCancel(String id, String reason) {
        // 1. 更新流程实例 status
        runtimeService.setVariable(id, BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS,
                BpmProcessInstanceStatusEnum.CANCEL.getStatus());
        runtimeService.setVariable(id, BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON, reason);

        // 2. 结束流程
        taskService.moveTaskToEnd(id);
    }

    @Override
    public void updateProcessInstanceReject(ProcessInstance processInstance, String reason) {
        runtimeService.setVariable(processInstance.getProcessInstanceId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS,
                BpmProcessInstanceStatusEnum.REJECT.getStatus());
        runtimeService.setVariable(processInstance.getProcessInstanceId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON,
                BpmReasonEnum.REJECT_TASK.format(reason));
    }

    // ========== Event 事件相关方法 ==========

    @Override
    public void processProcessInstanceCompleted(ProcessInstance instance) {
        // 注意：需要基于 instance 设置租户编号，避免 Flowable 内部异步时，丢失租户编号
        FlowableUtils.execute(instance.getTenantId(), () -> {
            // 1.1 获取当前状态
            Integer status = (Integer) instance.getProcessVariables().get(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS);
            String reason = (String) instance.getProcessVariables().get(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON);
            // 1.2 当流程状态还是审批状态中，说明审批通过了，则变更下它的状态
            // 为什么这么处理？因为流程完成，并且完成了，说明审批通过了
            if (Objects.equals(status, BpmProcessInstanceStatusEnum.RUNNING.getStatus())) {
                status = BpmProcessInstanceStatusEnum.APPROVE.getStatus();
                runtimeService.setVariable(instance.getId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, status);
            }

            // 2. 发送对应的消息通知
            if (Objects.equals(status, BpmProcessInstanceStatusEnum.APPROVE.getStatus())) {
                messageService.sendMessageWhenProcessInstanceApprove(BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceApproveMessage(instance));
            } else if (Objects.equals(status, BpmProcessInstanceStatusEnum.REJECT.getStatus())) {
                messageService.sendMessageWhenProcessInstanceReject(
                        BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceRejectMessage(instance, reason));
            }

            // 3. 发送流程实例的状态事件
            processInstanceEventPublisher.sendProcessInstanceResultEvent(
                    BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceStatusEvent(this, instance, status));
        });
    }

}


 iailab-module-bpm/iailab-module-bpm-biz/src/main/java/com/iailab/module/bpm/service/task/BpmTaskServiceImpl.java

@@ -13,6 +13,7 @@
import com.iailab.framework.web.core.util.WebFrameworkUtils;
import com.iailab.module.bpm.controller.admin.task.vo.task.*;
import com.iailab.module.bpm.convert.task.BpmTaskConvert;
import com.iailab.module.bpm.dal.dataobject.definition.BpmFormDO;
import com.iailab.module.bpm.enums.definition.*;
import com.iailab.module.bpm.enums.task.BpmCommentTypeEnum;
import com.iailab.module.bpm.enums.task.BpmReasonEnum;
@@ -21,6 +22,7 @@
import com.iailab.module.bpm.framework.flowable.core.enums.BpmnVariableConstants;
import com.iailab.module.bpm.framework.flowable.core.util.BpmnModelUtils;
import com.iailab.module.bpm.framework.flowable.core.util.FlowableUtils;
import com.iailab.module.bpm.service.definition.BpmFormService;
import com.iailab.module.bpm.service.definition.BpmModelService;
import com.iailab.module.bpm.service.definition.BpmProcessDefinitionService;
import com.iailab.module.bpm.service.message.BpmMessageService;
@@ -92,6 +94,8 @@
    private BpmModelService modelService;
    @Resource
    private BpmMessageService messageService;
    @Resource
    private BpmFormService formService;

    @Resource
    private AdminUserApi adminUserApi;
@@ -109,6 +113,9 @@
                .orderByTaskCreateTime().desc(); // 创建时间倒序
        if (StrUtil.isNotBlank(pageVO.getName())) {
            taskQuery.taskNameLike("%" + pageVO.getName() + "%");
        }
        if (StrUtil.isNotEmpty(pageVO.getCategory())) {
            taskQuery.taskCategory(pageVO.getCategory());
        }
        if (ArrayUtil.isNotEmpty(pageVO.getCreateTime())) {
            taskQuery.taskCreatedAfter(DateUtils.of(pageVO.getCreateTime()[0]));
@@ -154,7 +161,13 @@
        BpmnModel bpmnModel = bpmProcessDefinitionService.getProcessDefinitionBpmnModel(todoTask.getProcessDefinitionId());
        Map<Integer, BpmTaskRespVO.OperationButtonSetting> buttonsSetting = BpmnModelUtils.parseButtonsSetting(
                bpmnModel, todoTask.getTaskDefinitionKey());
        return BpmTaskConvert.INSTANCE.buildTodoTask(todoTask, childrenTasks, buttonsSetting);

        // 4. 任务表单
        BpmFormDO taskForm = null;
        if (StrUtil.isNotBlank(todoTask.getFormKey())){
            taskForm = formService.getForm(NumberUtils.parseLong(todoTask.getFormKey()));
        }
        return BpmTaskConvert.INSTANCE.buildTodoTask(todoTask, childrenTasks, buttonsSetting, taskForm);
    }

    @Override
@@ -188,6 +201,9 @@
                .orderByHistoricTaskInstanceEndTime().desc(); // 审批时间倒序
        if (StrUtil.isNotBlank(pageVO.getName())) {
            taskQuery.taskNameLike("%" + pageVO.getName() + "%");
        }
        if (StrUtil.isNotEmpty(pageVO.getCategory())) {
            taskQuery.taskCategory(pageVO.getCategory());
        }
        if (ArrayUtil.isNotEmpty(pageVO.getCreateTime())) {
            taskQuery.taskCreatedAfter(DateUtils.of(pageVO.getCreateTime()[0]));
@@ -442,7 +458,7 @@
     * 判断指定用户，是否是当前任务的加签人
     *
     * @param userId 用户 Id
     * @param task 任务
     * @param task   任务
     * @return 是否
     */
    private boolean isAddSignUserTask(Long userId, Task task) {
@@ -670,7 +686,7 @@
                reqVO.getTargetTaskDefinitionKey(), task.getProcessDefinitionId());

        // 2. 调用 Flowable 框架的退回逻辑
        returnTask(task, targetElement, reqVO);
        returnTask(userId, task, targetElement, reqVO);
    }

    /**
@@ -702,11 +718,12 @@
    /**
     * 执行退回逻辑
     *
     * @param userId        用户编号
     * @param currentTask   当前退回的任务
     * @param targetElement 需要退回到的目标任务
     * @param reqVO         前端参数封装
     */
    public void returnTask(Task currentTask, FlowElement targetElement, BpmTaskReturnReqVO reqVO) {
    public void returnTask(Long userId, Task currentTask, FlowElement targetElement, BpmTaskReturnReqVO reqVO) {
        // 1. 获得所有需要回撤的任务 taskDefinitionKey，用于稍后的 moveActivityIdsToSingleActivityId 回撤
        // 1.1 获取所有正常进行的任务节点 Key
        List<Task> taskList = taskService.createTaskQuery().processInstanceId(currentTask.getProcessInstanceId()).list();
@@ -722,22 +739,29 @@
            if (!returnTaskKeyList.contains(task.getTaskDefinitionKey())) {
                return;
            }
            // 2.1 添加评论
            taskService.addComment(task.getId(), currentTask.getProcessInstanceId(), BpmCommentTypeEnum.RETURN.getType(),
                    BpmCommentTypeEnum.RETURN.formatComment(reqVO.getReason()));
            // 2.2 更新 task 状态 + 原因
            updateTaskStatusAndReason(task.getId(), BpmTaskStatusEnum.RETURN.getStatus(), reqVO.getReason());

            // 判断是否分配给自己任务，因为会签任务，一个节点会有多个任务
            if (isAssignUserTask(userId, task)) { // 情况一：自己的任务，进行 RETURN 标记
                // 2.1.1 添加评论
                taskService.addComment(task.getId(), currentTask.getProcessInstanceId(), BpmCommentTypeEnum.RETURN.getType(),
                        BpmCommentTypeEnum.RETURN.formatComment(reqVO.getReason()));
                // 2.1.2 更新 task 状态 + 原因
                updateTaskStatusAndReason(task.getId(), BpmTaskStatusEnum.RETURN.getStatus(), reqVO.getReason());
            } else { // 情况二：别人的任务，进行 CANCEL 标记
                processTaskCanceled(task.getId());
            }
        });

        // 3. 设置流程变量节点驳回标记：用于驳回到节点，不执行 BpmUserTaskAssignStartUserHandlerTypeEnum 策略。导致自动通过
        runtimeService.setVariable(currentTask.getProcessInstanceId(),
                String.format(PROCESS_INSTANCE_VARIABLE_RETURN_FLAG, reqVO.getTargetTaskDefinitionKey()), Boolean.TRUE);

        // 4. 执行驳回
        // 使用 moveExecutionsToSingleActivityId 替换 moveActivityIdsToSingleActivityId 原因：
        // 当多实例任务回退的时候有问题。相关 issue: https://github.com/flowable/flowable-engine/issues/3944
        List<String> runExecutionIds = convertList(taskList, Task::getExecutionId);
        runtimeService.createChangeActivityStateBuilder()
                .processInstanceId(currentTask.getProcessInstanceId())
                .moveActivityIdsToSingleActivityId(returnTaskKeyList, // 当前要跳转的节点列表( 1 或多)
                        reqVO.getTargetTaskDefinitionKey()) // targetKey 跳转到的节点(1)
                .moveExecutionsToSingleActivityId(runExecutionIds, reqVO.getTargetTaskDefinitionKey())
                .changeState();
    }

@@ -1022,14 +1046,22 @@
        Integer assignEmptyHandlerType = BpmnModelUtils.parseAssignEmptyHandlerType(userTaskElement);
        TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronization() {

            /**
             * 特殊情况：部分情况下，TransactionSynchronizationManager 注册 afterCommit 监听时，不会被调用，但是 afterCompletion 可以
             * 例如说：第一个 task 就是配置【自动通过】或者【自动拒绝】时
             * 参见 <a href="https://gitee.com/zhijiantianya/yudao-cloud/issues/IB7V7Q">issue</a> 反馈
             */
            @Override
            public void afterCompletion(int transactionStatus) {
                // 特殊情况：部分情况下，TransactionSynchronizationManager 注册 afterCommit 监听时，不会被调用，但是 afterCompletion 可以
                // 例如说：第一个 task 就是配置【自动通过】或者【自动拒绝】时
                if (ObjectUtil.notEqual(transactionStatus, TransactionSynchronization.STATUS_COMMITTED)) {
                // 回滚情况，直接返回
                if (ObjectUtil.equal(transactionStatus, TransactionSynchronization.STATUS_ROLLED_BACK)) {
                    return;
                }
                // TODO 芋艿：可以后续优化成 getSelf();
                // 特殊情况：第一个 task 【自动通过】时，第二个任务设置审批人时 transactionStatus 会为 STATUS_UNKNOWN，不知道啥原因
                if (ObjectUtil.equal(transactionStatus, TransactionSynchronization.STATUS_UNKNOWN)
                        && getTask(task.getId()) == null) {
                    return;
                }
                // 特殊情况一：【人工审核】审批人为空，根据配置是否要自动通过、自动拒绝
                if (ObjectUtil.equal(approveType, BpmUserTaskApproveTypeEnum.USER.getType())) {
                    // 如果有审批人、或者拥有人，则说明不满足情况一，不自动通过、不自动拒绝
@@ -1037,19 +1069,19 @@
                        return;
                    }
                    if (ObjectUtil.equal(assignEmptyHandlerType, BpmUserTaskAssignEmptyHandlerTypeEnum.APPROVE.getType())) {
                        SpringUtil.getBean(BpmTaskService.class).approveTask(null, new BpmTaskApproveReqVO()
                        getSelf().approveTask(null, new BpmTaskApproveReqVO()
                                .setId(task.getId()).setReason(BpmReasonEnum.ASSIGN_EMPTY_APPROVE.getReason()));
                    } else if (ObjectUtil.equal(assignEmptyHandlerType, BpmUserTaskAssignEmptyHandlerTypeEnum.REJECT.getType())) {
                        SpringUtil.getBean(BpmTaskService.class).rejectTask(null, new BpmTaskRejectReqVO()
                        getSelf().rejectTask(null, new BpmTaskRejectReqVO()
                                .setId(task.getId()).setReason(BpmReasonEnum.ASSIGN_EMPTY_REJECT.getReason()));
                    }
                    // 特殊情况二：【自动审核】审批类型为自动通过、不通过
                } else {
                    if (ObjectUtil.equal(approveType, BpmUserTaskApproveTypeEnum.AUTO_APPROVE.getType())) {
                        SpringUtil.getBean(BpmTaskService.class).approveTask(null, new BpmTaskApproveReqVO()
                        getSelf().approveTask(null, new BpmTaskApproveReqVO()
                                .setId(task.getId()).setReason(BpmReasonEnum.APPROVE_TYPE_AUTO_APPROVE.getReason()));
                    } else if (ObjectUtil.equal(approveType, BpmUserTaskApproveTypeEnum.AUTO_REJECT.getType())) {
                        SpringUtil.getBean(BpmTaskService.class).rejectTask(null, new BpmTaskRejectReqVO()
                        getSelf().rejectTask(null, new BpmTaskRejectReqVO()
                                .setId(task.getId()).setReason(BpmReasonEnum.APPROVE_TYPE_AUTO_REJECT.getReason()));
                    }
                }
@@ -1088,8 +1120,22 @@
        // 发送通知。在事务提交时，批量执行操作，所以直接查询会无法查询到 ProcessInstance，所以这里是通过监听事务的提交来实现。
        TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronization() {

            /**
             * 特殊情况：部分情况下，TransactionSynchronizationManager 注册 afterCommit 监听时，不会被调用，但是 afterCompletion 可以
             * 例如说：第一个 task 就是配置【自动通过】或者【自动拒绝】时
             * 参见 <a href="https://gitee.com/zhijiantianya/yudao-cloud/issues/IB7V7Q">issue</a> 反馈
             */
            @Override
            public void afterCommit() {
            public void afterCompletion(int transactionStatus) {
                // 回滚情况，直接返回
                if (ObjectUtil.equal(transactionStatus, TransactionSynchronization.STATUS_ROLLED_BACK)) {
                    return;
                }
                // 特殊情况：第一个 task 【自动通过】时，第二个任务设置审批人时 transactionStatus 会为 STATUS_UNKNOWN，不知道啥原因
                if (ObjectUtil.equal(transactionStatus, TransactionSynchronization.STATUS_UNKNOWN)
                        && getTask(task.getId()) == null) {
                    return;
                }
                if (StrUtil.isEmpty(task.getAssignee())) {
                    log.error("[processTaskAssigned][taskId({}) 没有分配到负责人]", task.getId());
                    return;
@@ -1146,6 +1192,7 @@
                        }
                    }
                }

                AdminUserRespDTO startUser = adminUserApi.getUser(Long.valueOf(processInstance.getStartUserId())).getCheckedData();
                messageService.sendMessageWhenTaskAssigned(BpmTaskConvert.INSTANCE.convert(processInstance, startUser, task));
            }