/*
 *      Copyright (c) 2018-2028, Chill Zhuang All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in the
 *  documentation and/or other materials provided with the distribution.
 *  Neither the name of the dreamlu.net developer nor the names of its
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 *  Author: Chill 庄骞 (smallchill@163.com)
 */
package org.sxkj.gd.workorder.service.impl;

import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springblade.core.secure.utils.AuthUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.sxkj.common.utils.SpringContextUtil;
import org.sxkj.gd.workorder.entity.GdClueEventEntity;
import org.sxkj.gd.workorder.entity.GdClueEventStatusFlowEntity;
import org.sxkj.gd.workorder.enums.EventStatusEnum;
import org.sxkj.gd.workorder.mapper.GdClueEventStatusFlowMapper;
import org.sxkj.gd.workorder.service.IGdClueEventService;
import org.sxkj.gd.workorder.service.IGdClueEventStatusFlowService;
import org.sxkj.gd.workorder.vo.GdClueEventStatusFlowVO;
import org.springframework.stereotype.Service;
import org.springblade.core.mp.base.BaseServiceImpl;

import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 事件状态流转履历表 服务实现类
 *
 * @author system
 * @since 2026-07-29
 */
@Slf4j
@Service
@AllArgsConstructor
public class GdClueEventStatusFlowServiceImpl extends BaseServiceImpl<GdClueEventStatusFlowMapper, GdClueEventStatusFlowEntity> implements IGdClueEventStatusFlowService {

    /**
     * 根据事件ID查询状态流转记录列表
     * <p>
     * 步骤：
     * 1. 参数校验
     * 2. 查询状态流转记录列表
     * 3. 补充状态名称
     * </p>
     *
     * @param eventId 事件ID
     * @return 状态流转记录列表
     */
    @Override
    public List<GdClueEventStatusFlowVO> getStatusFlowsByEventId(Long eventId) {
        // 1. 参数校验
        if (eventId == null) {
            throw new RuntimeException("事件ID不能为空");
        }

        // 2. 查询状态流转记录列表
        List<GdClueEventStatusFlowVO> flows = baseMapper.selectStatusFlowsByEventId(eventId);

        // 3. 补充状态名称
        if (flows != null && !flows.isEmpty()) {
            flows.forEach(flow -> {
                // 补充变更前状态名称
                if (flow.getOldStatus() != null) {
                    flow.setOldStatusName(EventStatusEnum.getNameByCode(flow.getOldStatus()));
                }
                // 补充变更后状态名称
                if (flow.getNewStatus() != null) {
                    flow.setNewStatusName(EventStatusEnum.getNameByCode(flow.getNewStatus()));
                }
            });
        }

        return flows;
    }

    /**
     * 插入状态流转记录
     * <p>
     * 步骤：
     * 1. 参数校验
     * 2. 构建状态流转记录实体
     * 3. 保存状态流转记录
     * </p>
     *
     * @param eventId        事件ID
     * @param oldStatus      变更前状态
     * @param newStatus      变更后状态
     * @param operateContent 操作备注
     * @param operateTime    操作时间
     * @return 是否成功
     */
    @Override
    public boolean insertStatusFlow(Long eventId, Integer oldStatus, Integer newStatus, String operateContent, Date operateTime) {
        // 1. 参数校验
        if (eventId == null) {
            throw new RuntimeException("事件ID不能为空");
        }
        if (newStatus == null) {
            throw new RuntimeException("目标状态不能为空");
        }

        // 2. 构建状态流转记录实体
        GdClueEventStatusFlowEntity flowEntity = new GdClueEventStatusFlowEntity();
        flowEntity.setEventId(eventId);
        flowEntity.setOldStatus(oldStatus);
        flowEntity.setNewStatus(newStatus);
        flowEntity.setOperateContent(operateContent);
        flowEntity.setOperateTime(operateTime != null ? operateTime : new Date());
        flowEntity.setOperateUser(AuthUtil.getUserId());
        flowEntity.setOperateDept(Long.valueOf(AuthUtil.getDeptId()));
        flowEntity.setCreateUser(AuthUtil.getUserId());
        flowEntity.setCreateDept(Long.valueOf(AuthUtil.getDeptId()));
        flowEntity.setCreateTime(new Date());

        // 3. 保存状态流转记录
        return save(flowEntity);
    }

    /**
     * 根据事件ID查询状态时间线
     * <p>
     * 步骤：
     * 1. 参数校验
     * 2. 查询事件当前状态
     * 3. 查询状态流转记录
     * 4. 构建已到达状态集合
     * 5. 生成完整的状态时间线
     * </p>
     *
     * @param eventId 事件ID
     * @return 状态时间线列表（按状态编码升序）
     */
    @Override
    public List<GdClueEventStatusFlowVO> getStatusTimeline(Long eventId) {
        // 1. 参数校验
        if (eventId == null) {
            throw new RuntimeException("事件ID不能为空");
        }

        // 2. 查询事件当前状态
		IGdClueEventService gdClueEventService = SpringContextUtil.getBean(IGdClueEventService.class);
		GdClueEventEntity event = gdClueEventService.getById(eventId);
        if (event == null) {
            throw new RuntimeException("事件不存在");
        }

        // 3. 查询状态流转记录
        List<GdClueEventStatusFlowVO> flows = baseMapper.selectStatusFlowsByEventId(eventId);

        // 4. 构建每个状态的最后流转记录
        // key: 状态编码, value: 最后的流转记录
        Map<Integer, GdClueEventStatusFlowVO> lastFlowMap = new HashMap<>();
        if (flows != null && !flows.isEmpty()) {
            for (GdClueEventStatusFlowVO flow : flows) {
                // 记录目标状态的最后流转
                if (flow.getNewStatus() != null) {
                    lastFlowMap.put(flow.getNewStatus(), flow);
                }
                // 记录源状态的最后流转
                if (flow.getOldStatus() != null) {
                    lastFlowMap.put(flow.getOldStatus(), flow);
                }
            }
        }

        // 5. 生成完整的状态时间线
        List<GdClueEventStatusFlowVO> timeline = new java.util.ArrayList<>();
        for (Integer statusCode : EventStatusEnum.getAllStatusCodes()) {
            GdClueEventStatusFlowVO item = new GdClueEventStatusFlowVO();
            // 使用 newStatus 字段存储当前状态编码
            item.setNewStatus(statusCode);
            item.setNewStatusName(EventStatusEnum.getNameByCode(statusCode));

            GdClueEventStatusFlowVO lastFlow = lastFlowMap.get(statusCode);
            if (lastFlow != null) {
                // 根据最后流转记录判断是否已到达
                // 如果目标是该状态，则已到达
                // 如果源是该状态（目标不是），则未到达（已离开）
                boolean isReached = lastFlow.getNewStatus().equals(statusCode);
                item.setIsReached(isReached);

                if (isReached) {
                    // 已到达状态：设置操作信息
                    item.setOperateUser(lastFlow.getOperateUser());
                    item.setOperateUserName(lastFlow.getOperateUserName());
                    item.setOperateDept(lastFlow.getOperateDept());
                    item.setOperateDeptName(lastFlow.getOperateDeptName());
                    item.setOperateContent(lastFlow.getOperateContent());
                    item.setOperateTime(lastFlow.getOperateTime());
                }
            } else {
                // 没有流转记录，未到达
                item.setIsReached(false);
            }

            timeline.add(item);
        }

        return timeline;
    }

}