/*
 *      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.extern.slf4j.Slf4j;
import org.sxkj.gd.workorder.entity.GdWorkOrderFlowEntity;
import org.sxkj.gd.workorder.vo.GdWorkOrderFlowVO;
import org.sxkj.gd.workorder.vo.WorkOrderStageVO;
import org.sxkj.gd.workorder.vo.WorkOrderStatusDetailVO;
import org.sxkj.gd.workorder.excel.GdWorkOrderFlowExcel;
import org.sxkj.gd.workorder.mapper.GdWorkOrderFlowMapper;
import org.sxkj.gd.workorder.service.IGdWorkOrderFlowService;
import org.sxkj.gd.workorder.enums.WorkOrderStatusEnum;
import org.springframework.stereotype.Service;
import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import org.springblade.core.mp.base.BaseServiceImpl;
import java.util.List;
import java.util.ArrayList;
import java.util.Arrays;

/**
 * 流程记录表 服务实现类
 *
 * @author lw
 * @since 2026-01-14
 */
@Slf4j
@Service
public class GdWorkOrderFlowServiceImpl extends BaseServiceImpl<GdWorkOrderFlowMapper, GdWorkOrderFlowEntity> implements IGdWorkOrderFlowService {

	@Override
	public IPage<GdWorkOrderFlowVO> selectGdWorkOrderFlowPage(IPage<GdWorkOrderFlowVO> page, GdWorkOrderFlowVO gdWorkOrderFlow) {
		return page.setRecords(baseMapper.selectGdWorkOrderFlowPage(page, gdWorkOrderFlow));
	}


	@Override
	public List<GdWorkOrderFlowExcel> exportGdWorkOrderFlow(Wrapper<GdWorkOrderFlowEntity> queryWrapper) {
		List<GdWorkOrderFlowExcel> gdWorkOrderFlowList = baseMapper.exportGdWorkOrderFlow(queryWrapper);
		//gdWorkOrderFlowList.forEach(gdWorkOrderFlow -> {
		//	gdWorkOrderFlow.setTypeName(DictCache.getValue(DictEnum.YES_NO, GdWorkOrderFlow.getType()));
		//});
		return gdWorkOrderFlowList;
	}

	@Override
	public List<WorkOrderStageVO> getHierarchicalFlow(Wrapper<GdWorkOrderFlowEntity> queryWrapper) {
		// 1. 从数据库获取实际流程记录
		List<GdWorkOrderFlowEntity> actualFlows = list(queryWrapper);

		// 2. 构建分层结构
		return buildHierarchicalFlow(actualFlows);
	}

	/**
	 * 构建分层结构的流程数据
	 *
	 * @param actualFlows 实际流程记录
	 * @return 分层结构的流程数据
	 */
	private List<WorkOrderStageVO> buildHierarchicalFlow(List<GdWorkOrderFlowEntity> actualFlows) {
		List<WorkOrderStageVO> stages = new ArrayList<>();

		// 确定当前阶段代码
		String currentStageCode = "0"; // 默认未开始
		if (actualFlows != null && !actualFlows.isEmpty()) {
			// 获取最后一个流程的状态作为当前阶段
			GdWorkOrderFlowEntity lastFlow = actualFlows.get(actualFlows.size() - 1);
			currentStageCode = lastFlow.getFlowStatus();
		}

		// 3. 遍历所有工单阶段
		// 工单发布阶段
		stages.add(buildStage(WorkOrderStatusEnum.STAGE_WORK_ORDER_RELEASE.getStageDesc(), Arrays.asList(
				WorkOrderStatusEnum.PUBLISHING_ACCEPTING.getStageDesc(),
				WorkOrderStatusEnum.PUBLISHING_REJECTING.getStageDesc()
		), actualFlows, WorkOrderStatusEnum.STAGE_WORK_ORDER_RELEASE.getMaxCode(), currentStageCode));

		// 接单响应阶段
		stages.add(buildStage(WorkOrderStatusEnum.STAGE_ORDER_RESPONSE.getStageDesc(), Arrays.asList(
				WorkOrderStatusEnum.RESPONDING_TO_BE_SPLIT.getStageDesc(),
				WorkOrderStatusEnum.RESPONDING_APPLY_CANCEL.getStageDesc(),
				WorkOrderStatusEnum.RESPONDING_APPLY_MODIFY.getStageDesc(),
				WorkOrderStatusEnum.RESPONDING_CANCELED.getStageDesc()
		), actualFlows, WorkOrderStatusEnum.STAGE_ORDER_RESPONSE.getMaxCode(), currentStageCode));

		// 执行中阶段
		stages.add(buildStage(WorkOrderStatusEnum.STAGE_IN_EXECUTION.getStageDesc(), Arrays.asList(
				WorkOrderStatusEnum.EXECUTING_TO_BE_COMPLETED.getStageDesc(),
				WorkOrderStatusEnum.EXECUTING_NEGOTIATE_MODIFY.getStageDesc()
		), actualFlows, WorkOrderStatusEnum.STAGE_IN_EXECUTION.getMaxCode(), currentStageCode));

		// 完成待验阶段
		stages.add(buildStage(WorkOrderStatusEnum.STAGE_COMPLETED_PENDING_INSPECTION.getStageDesc(), Arrays.asList(
				WorkOrderStatusEnum.COMPLETED_TO_BE_INSPECTED.getStageDesc()
		), actualFlows, WorkOrderStatusEnum.STAGE_COMPLETED_PENDING_INSPECTION.getMaxCode(), currentStageCode));

		// 验收通过阶段
		stages.add(buildStage(WorkOrderStatusEnum.STAGE_ACCEPTED.getStageDesc(), Arrays.asList(
				WorkOrderStatusEnum.ACCEPTED_TO_BE_SETTLED.getStageDesc()
		), actualFlows, WorkOrderStatusEnum.STAGE_ACCEPTED.getMaxCode(), currentStageCode));

		// 结算完成阶段
		stages.add(buildStage(WorkOrderStatusEnum.STAGE_SETTLEMENT_COMPLETED.getStageDesc(), Arrays.asList(
				WorkOrderStatusEnum.SETTLEMENT_COMPLETED.getStageDesc()
		), actualFlows, WorkOrderStatusEnum.STAGE_SETTLEMENT_COMPLETED.getMaxCode(), currentStageCode));

		return stages;
	}

	/**
	 * 构建单个阶段的流程数据
	 *
	 * @param stageName     阶段名称
	 * @param statusNames   状态名称列表
	 * @param actualFlows   实际流程记录
	 * @param flowStatus    流程状态码
	 * @param currentStageCode 当前阶段代码
	 * @return 阶段流程数据
	 */
	private WorkOrderStageVO buildStage(String stageName, List<String> statusNames, List<GdWorkOrderFlowEntity> actualFlows, String flowStatus, String currentStageCode) {
		List<WorkOrderStatusDetailVO> statuses = new ArrayList<>();

		// 临时列表，用于收集所有状态详情
		List<WorkOrderStatusDetailVO> tempStatuses = new ArrayList<>();

		// 遍历该阶段的所有状态
		for (String statusName : statusNames) {
			log.info("正在处理状态：{}", statusName);
			// 查找所有对应的实际流程记录
			List<GdWorkOrderFlowEntity> matchingFlows = findMatchingFlows(actualFlows, statusName, flowStatus);

			if (!matchingFlows.isEmpty()) {
				// 对匹配的流程记录按创建时间排序
				matchingFlows.sort((f1, f2) -> {
					if (f1.getCreateTime() != null && f2.getCreateTime() != null) {
						return f1.getCreateTime().compareTo(f2.getCreateTime());
					} else if (f1.getCreateTime() != null) {
						return -1;
					} else {
						return 1;
					}
				});

				// 无论阶段是否在当前阶段之后，只要有匹配的流程记录，就标记为已到达
				for (GdWorkOrderFlowEntity matchingFlow : matchingFlows) {
					tempStatuses.add(new WorkOrderStatusDetailVO(
						statusName,
					true,
						matchingFlow.getOperator(),
						matchingFlow.getCreateTime()
				));
				}
			} else {
				// 未到达的状态
				// 如果阶段在当前阶段之后，则标记为未到达
				// 如果阶段在当前阶段之前或等于，则也标记为未到达（因为没有匹配的流程记录）
				tempStatuses.add(new WorkOrderStatusDetailVO(statusName));
			}
		}

		// 分离已到达和未到达的状态
		List<WorkOrderStatusDetailVO> reachedStatuses = new ArrayList<>();
		List<WorkOrderStatusDetailVO> unreachedStatuses = new ArrayList<>();

		for (WorkOrderStatusDetailVO status : tempStatuses) {
			if (status.isReached()) {
				reachedStatuses.add(status);
			} else {
				unreachedStatuses.add(status);
			}
		}

		// 对已到达的状态按创建时间排序
		reachedStatuses.sort((s1, s2) -> {
			if (s1.getCreateTime() != null && s2.getCreateTime() != null) {
				return s1.getCreateTime().compareTo(s2.getCreateTime());
			} else if (s1.getCreateTime() != null) {
				return -1;
			} else {
				return 1;
			}
		});

		// 合并已到达和未到达的状态（已到达的在前，未到达的在后）
		statuses.addAll(reachedStatuses);
		statuses.addAll(unreachedStatuses);

		return new WorkOrderStageVO(stageName, statuses);
	}

	/**
	 * 查找所有匹配的流程记录
	 *
	 * @param actualFlows 实际流程记录
	 * @param statusName  状态名称
	 * @param flowStatus  流程状态码
	 * @return 匹配的流程记录列表，没有则返回空列表
	 */
	private List<GdWorkOrderFlowEntity> findMatchingFlows(List<GdWorkOrderFlowEntity> actualFlows, String statusName, String flowStatus) {
		List<GdWorkOrderFlowEntity> matchingFlows = new ArrayList<>();
		if (actualFlows != null) {
			for (GdWorkOrderFlowEntity flow : actualFlows) {
				if (flow.getFlowStatus().equals(flowStatus) && flow.getFlowName().equals(statusName)) {
					matchingFlows.add(flow);
				}
			}
		}
		return matchingFlows;
	}

}