package org.dromara.workflow.listener;
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import cn.hutool.core.collection.CollUtil;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.dromara.common.core.enums.BusinessStatusEnum;
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import org.dromara.common.core.utils.StringUtils;
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import org.dromara.warm.flow.core.entity.Definition;
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import org.dromara.warm.flow.core.entity.Instance;
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import org.dromara.warm.flow.core.entity.Task;
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import org.dromara.warm.flow.core.listener.GlobalListener;
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import org.dromara.warm.flow.core.listener.ListenerVariable;
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import org.dromara.warm.flow.orm.entity.FlowTask;
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import org.dromara.workflow.common.ConditionalOnEnable;
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import org.dromara.workflow.handler.FlowProcessEventHandler;
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import org.dromara.workflow.service.IFlwInstanceService;
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import org.dromara.workflow.service.IFlwTaskService;
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import org.springframework.stereotype.Component;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* 全局任务办理监听
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*
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* @author may
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*/
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@ConditionalOnEnable
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@Component
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@Slf4j
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@RequiredArgsConstructor
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public class WorkflowGlobalListener implements GlobalListener {
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private final IFlwTaskService taskService;
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private final IFlwInstanceService instanceService;
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private final FlowProcessEventHandler flowProcessEventHandler;
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/**
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* 创建监听器，任务创建时执行
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*
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* @param listenerVariable 监听器变量
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*/
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@Override
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public void create(ListenerVariable listenerVariable) {
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Instance instance = listenerVariable.getInstance();
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Definition definition = listenerVariable.getDefinition();
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String businessId = instance.getBusinessId();
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String flowStatus = instance.getFlowStatus();
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Task task = listenerVariable.getTask();
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if (task != null && BusinessStatusEnum.WAITING.getStatus().equals(flowStatus)) {
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// 判断流程状态（发布审批中事件）
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flowProcessEventHandler.processTaskHandler(definition.getFlowCode(), task.getNodeCode(), task.getId(), businessId);
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}
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}
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/**
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* 开始监听器，任务开始办理时执行
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*
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* @param listenerVariable 监听器变量
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*/
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@Override
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public void start(ListenerVariable listenerVariable) {
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}
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/**
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* 分派监听器，动态修改代办任务信息
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*
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* @param listenerVariable 监听器变量
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*/
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@Override
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public void assignment(ListenerVariable listenerVariable) {
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}
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/**
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* 完成监听器，当前任务完成后执行
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*
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* @param listenerVariable 监听器变量
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*/
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@Override
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public void finish(ListenerVariable listenerVariable) {
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Instance instance = listenerVariable.getInstance();
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Definition definition = listenerVariable.getDefinition();
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String businessId = instance.getBusinessId();
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String flowStatus = instance.getFlowStatus();
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Map<String, Object> params = new HashMap<>();
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// 历史任务扩展(通常为附件)
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params.put("hisTaskExt", listenerVariable.getFlowParams().getHisTaskExt());
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// 办理人
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params.put("handler", listenerVariable.getFlowParams().getHandler());
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// 办理意见
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params.put("message", listenerVariable.getFlowParams().getMessage());
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// 判断流程状态（发布：撤销，退回，作废，终止，已完成事件）
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String status = determineFlowStatus(instance, flowStatus);
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if (StringUtils.isNotBlank(status)) {
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flowProcessEventHandler.processHandler(definition.getFlowCode(), businessId, status, params, false);
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}
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}
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/**
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* 根据流程实例和当前流程状态确定最终状态
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*
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* @param instance 流程实例
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* @param flowStatus 流程实例当前状态
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* @return 流程最终状态
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*/
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private String determineFlowStatus(Instance instance, String flowStatus) {
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if (StringUtils.isNotBlank(flowStatus) && BusinessStatusEnum.initialState(flowStatus)) {
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log.info("流程实例当前状态: {}", flowStatus);
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return flowStatus;
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} else {
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Long instanceId = instance.getId();
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List<FlowTask> flowTasks = taskService.selectByInstId(instanceId);
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if (CollUtil.isEmpty(flowTasks)) {
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String status = BusinessStatusEnum.FINISH.getStatus();
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// 更新流程状态为已完成
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instanceService.updateStatus(instanceId, status);
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log.info("流程已结束，状态更新为: {}", status);
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return status;
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}
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return null;
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}
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}
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}
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