package com.linghu.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.linghu.config.FinalStatus;
import com.linghu.model.common.ResponseResult;
import com.linghu.model.dto.KeywordDto;
import com.linghu.model.dto.OrderDto;
import com.linghu.model.entity.Keyword;
import com.linghu.model.entity.KeywordTask;
import com.linghu.model.entity.Orders;
import com.linghu.model.entity.Question;
import com.linghu.model.page.CustomPage;
import com.linghu.service.KeywordService;
import com.linghu.service.KeywordTaskService;
import com.linghu.service.OrderService;
import com.linghu.mapper.OrderMapper;

import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;

import com.linghu.service.QuestionService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

/**
 * @author xy
 * @description 针对表【order】的数据库操作Service实现
 * @createDate 2025-07-04 20:17:33
 */
@Service
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders>
        implements OrderService {

    @Autowired
    private KeywordService keywordService;
    @Autowired
    private QuestionService questionService;
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private KeywordTaskService keywordTaskService;

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean saveOrderWithKeywords(OrderDto orderDto, String order_id) {

        // 如果有关键词，则保存关键词
        if (StringUtils.hasText(orderDto.getKeywords())) {
            String[] keywordArray = orderDto.getKeywords().split("\\n");
            for (String keywordName : keywordArray) {
                if (StringUtils.hasText(keywordName)) {
                    Keyword keyword = new Keyword();
                    keyword.setOrder_id(order_id);
                    keyword.setKeyword_name(keywordName.trim());
                    keyword.setStatus(FinalStatus.NOTSUBMITTED.getValue());
                    // keyword.setNum(1); // 默认采集轮数为1
                    keywordService.save(keyword);
                }
            }

        }

        return true;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateOrderWithKeywords(OrderDto orderDto, Integer currentStatus) {
        // 状态为2或3时禁止修改
        if (currentStatus >= 2) {
            throw new RuntimeException("执行中和已完成状态的订单不可修改");
        }

        // 更新订单基本信息
        if (!this.updateById(orderDto)) {
            return false;
        }

        // 删除旧关键词（当状态为未提交时允许修改关键词）
        keywordService.lambdaUpdate()
                .eq(Keyword::getOrder_id, orderDto.getOrder_id())
                .eq(Keyword::getStatus, FinalStatus.NOTSUBMITTED.getValue())
                .remove();

        // 保存新关键词
        if (StringUtils.hasText(orderDto.getKeywords())) {
            String[] keywordArray = orderDto.getKeywords().split("\\n");
            for (String keywordName : keywordArray) {
                if (StringUtils.hasText(keywordName)) {
                    Keyword keyword = new Keyword();
                    keyword.setOrder_id(orderDto.getOrder_id());
                    keyword.setKeyword_name(keywordName.trim());
                    keyword.setStatus(FinalStatus.NOTSUBMITTED.getValue());
                    keywordService.save(keyword);
                }
            }
        }

        return true;
    }

    @Override
    public List<KeywordDto> getKeywordListByOrderId(String orderId) {
        List<Keyword> keywords = keywordService.lambdaQuery()
                .eq(Keyword::getOrder_id, orderId)
                .list();

        // 遍历关键词，获取每个关键词对应的提问词
        List<KeywordDto> keywordDtos = new ArrayList<>();
        for (Keyword keyword : keywords) {
            KeywordDto dto = new KeywordDto();
            BeanUtils.copyProperties(keyword, dto);
            LambdaQueryWrapper<KeywordTask> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(KeywordTask::getKeyword_id, keyword.getKeyword_id());
            List<KeywordTask> keywordTasks = keywordTaskService.list(queryWrapper);

            // 提取 task_id 列表
            List<String> taskIdList = keywordTasks.stream()
                    .map(KeywordTask::getTask_id)
                    .filter(Objects::nonNull)
                    .collect(Collectors.toList());

            dto.setTaskIdList(taskIdList); // 设置 task_id 列表
            // 查询该关键词下的所有提问词
            List<Question> questions = questionService.lambdaQuery()
                    .eq(Question::getKeyword_id, keyword.getKeyword_id())
                    .list();
            dto.setQuestionList(questions);
            keywordDtos.add(dto);
        }
        return keywordDtos;
    }
    @Override
    public Page<String> getClientList(String clientName, Integer pageNum, Integer pageSize) {
        Page<Orders> page = new Page<>(pageNum, pageSize);

        // 构建查询条件（根据客户名称模糊搜索）
        LambdaQueryWrapper<Orders> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.select(Orders::getClient_name) // 只查询客户名称字段
                .eq(Orders::getDel_flag, 0)    // 只查询未删除的订单
                .groupBy(Orders::getClient_name); // 按客户名称分组去重
        if (clientName != null && !clientName.isEmpty()) {
            queryWrapper.like(Orders::getClient_name, clientName);
        }
        List<Orders> orders = orderMapper.selectList(queryWrapper);

        // 转换为客户选项列表（统计每个客户的订单数量）
        List<String> clientOptions = orders.stream()
                .map(Orders::getClient_name)
                .collect(Collectors.toList());

        // 构建结果分页对象
        Page<String> resultPage = new Page<>();
        resultPage.setRecords(clientOptions);

        return resultPage;


    }

    @Override
    public ResponseResult<CustomPage<Orders>> getCustomPageResponseResult(Integer pageNum, Integer pageSize, String clientName, Integer status, String timeRange) {
        LambdaQueryWrapper<Orders> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Orders::getDel_flag, 0);

        // 添加查询条件
        if (clientName != null && !clientName.trim().isEmpty()) {
            queryWrapper.eq(Orders::getClient_name, clientName);
        }
        if (status != null) {
            queryWrapper.eq(Orders::getStatus, status);
        }
        // 改造时间筛选逻辑
        if (timeRange != null && !timeRange.trim().isEmpty()) {
            LocalDateTime now = LocalDateTime.now();
            LocalDateTime startTime = null;

            switch (timeRange.trim()) {
                case "week":
                    startTime = now.minusWeeks(1);
                    break;
                case "month":
                    startTime = now.minusMonths(1);
                    break;
                case "threeMonths":
                    startTime = now.minusMonths(3);
                    break;
                case "year":
                    startTime = now.minusYears(1);
                    break;
                default:
                    // 可添加日志记录无效参数
                    break;
            }
            if (startTime != null) {
                queryWrapper.ge(Orders::getCreate_time, startTime);
            }
        }
        // 排序
        queryWrapper.orderByDesc(Orders::getCreate_time);
        // 分页查询
        if (pageNum != null && pageSize != null) {
            Page<Orders> pageInfo = new Page<>(pageNum, pageSize);
            Page<Orders> result = this.page(pageInfo, queryWrapper);
            return ResponseResult.success(new CustomPage<>(result));
        }

        // 不分页查询：手动创建 CustomPage
        List<Orders> list = this.list(queryWrapper);
        CustomPage<Orders> page = new CustomPage<>(new Page<>());
        page.setRecords(list);
        page.setTotal(list.size());

        return ResponseResult.success(page);
    }

    @Override

    public ResponseResult<Orders> getOrdersResponseResult(OrderDto orderDto) {
        // 将dto转entity
        Orders order = new Orders();
        BeanUtils.copyProperties(orderDto, order);

        if (order.getClient_name() == null || order.getClient_name().trim().isEmpty()) {
            return ResponseResult.error("客户名称不能为空");
        }

        // 生成订单ID：日期+当天的订单数量（如：202507060001）
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
        String dateStr = dateFormat.format(new Date());
        // 1. 查询当天最大的订单号（包含已删除的，适应硬删除场景）
        LambdaQueryWrapper<Orders> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.likeRight(Orders::getOrder_id, dateStr)
                .select(Orders::getOrder_id)
                .orderByDesc(Orders::getOrder_id)
                .last("LIMIT 1"); // 只取最大的一条
        Orders maxOrder = this.getOne(queryWrapper);
        int sequence = 1; // 默认序号

        if (maxOrder != null && maxOrder.getOrder_id() != null) {
            // 2. 从最大订单号中提取序号（如"202507250005"提取"0005"）
            String maxId = maxOrder.getOrder_id();
            if (maxId.length() == dateStr.length() + 4) { // 校验格式
                String seqStr = maxId.substring(dateStr.length());
                sequence = Integer.parseInt(seqStr) + 1; // 序号+1
            }
        }

        // 3. 生成新订单号（补全4位，如1→0001）
        String  orderId = String.format("%s%04d", dateStr, sequence);
        order.setOrder_id(orderId);

        // 设置初始状态
        order.setStatus(1); // 待处理
        order.setDel_flag(0); // 未删除
        order.setCreate_time(LocalDateTime.now());
        boolean save = this.save(order);
        // 保存关键词
        boolean saveOrderWithKeywords = this.saveOrderWithKeywords(orderDto, order.getOrder_id());
        if (!saveOrderWithKeywords) {
            return ResponseResult.error("添加关键词失败");
        }
        //更新关键词数量
        LambdaQueryWrapper<Keyword> queryKeywordsQueryWrapper =  new LambdaQueryWrapper<>();
        queryKeywordsQueryWrapper.eq(Keyword::getOrder_id, order.getOrder_id());
        int count1 = (int) keywordService.count(queryKeywordsQueryWrapper);
        order.setKeyword_num(count1);
        order.setUpdate_time(LocalDateTime.now());
        this.updateById(order);

        if (save) {
            return ResponseResult.success(order);
        }
        return ResponseResult.error("添加订单失败");
    }

    @Override
    public ResponseResult<Void> getVoidResponseResult(String orderId) {
        Orders order = this.getById(orderId);
        if (order == null) {
            return ResponseResult.error("订单不存在");
        }

        order.setDel_flag(1);
        order.setUpdate_time(LocalDateTime.now());
        boolean success = this.updateById(order);

        return success ? ResponseResult.success() : ResponseResult.error("删除订单失败");
    }

    @Override
    public ResponseResult<Void> updateOrder(OrderDto orderDto) {
        if (orderDto.getOrder_id() == null) {
            return ResponseResult.error("订单ID不能为空");
        }
        if (orderDto.getClient_name() == null || orderDto.getClient_name().trim().isEmpty()) {
            return ResponseResult.error("客户名称不能为空");
        }

        Orders existingOrder = this.getById(orderDto.getOrder_id());
        if (existingOrder == null) {
            return ResponseResult.error("订单不存在");
        }

        orderDto.setUpdate_time(LocalDateTime.now());
        if (orderDto.getKeywords()!= null&& orderDto.getKeywords().trim().length() > 0){
            // 保存关键词
            boolean saveOrderWithKeywords = saveOrderWithKeywords(orderDto, orderDto.getOrder_id());
            if (!saveOrderWithKeywords) {
                return ResponseResult.error("添加关键词失败");
            }
            //更新订单状态，新增关键词
            orderDto.setStatus(1);
        }
        //更新关键词数量
        LambdaQueryWrapper<Keyword> queryKeywordsQueryWrapper =  new LambdaQueryWrapper<>();
        queryKeywordsQueryWrapper.eq(Keyword::getOrder_id, orderDto.getOrder_id());
        int count1 = (int) keywordService.count(queryKeywordsQueryWrapper);
        orderDto.setKeyword_num(count1);


        if (this.updateById(orderDto)) {
            return ResponseResult.success();
        }
        return ResponseResult.error("更新订单失败");
    }

    @Override
    public ResponseResult<Orders> getOrderById(String orderId) {
        Orders order = this.getById(orderId);
        if (order == null || order.getDel_flag() == 1) {
            return ResponseResult.error("订单不存在");
        }
        return ResponseResult.success(order);
    }


}