package com.controller;

import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Date;
import java.util.List;
import javax.servlet.http.HttpServletRequest;

import com.utils.ValidatorUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.baomidou.mybatisplus.mapper.Wrapper;
import com.annotation.IgnoreAuth;

import com.entity.KuaidiyuanEntity;
import com.entity.view.KuaidiyuanView;

import com.service.KuaidiyuanService;
import com.service.TokenService;
import com.utils.PageUtils;
import com.utils.R;
import com.utils.MD5Util;
import com.utils.MPUtil;
import com.utils.CommonUtil;
import java.io.IOException;

/**
 * 快递员
 * 后端接口
 * @author
 * @email
 * @date 2023-02-17 16:59:28
 */
@RestController  // 标识为RESTful控制器，返回JSON数据
@RequestMapping("/kuaidiyuan")  // 定义基础请求路径
public class KuaidiyuanController {
    @Autowired  // 自动注入快递员服务
    private KuaidiyuanService kuaidiyuanService;

    @Autowired  // 自动注入Token服务，用于生成和验证JWT token
    private TokenService tokenService;

    /**
     * 登录接口
     * @param username 员工账号
     * @param password 密码
     * @param captcha 验证码（参数中存在但未使用）
     * @param request HTTP请求对象
     * @return 登录结果，包含token或错误信息
     */
    @IgnoreAuth  // 忽略认证，无需登录即可访问
    @RequestMapping(value = "/login")
    public R login(String username, String password, String captcha, HttpServletRequest request) {
        // 根据员工账号查询用户信息
        KuaidiyuanEntity u = kuaidiyuanService.selectOne(new EntityWrapper<KuaidiyuanEntity>().eq("yuangongzhanghao", username));

        // 验证用户是否存在且密码是否正确
        if(u == null || !u.getMima().equals(password)) {
            return R.error("账号或密码不正确");
        }

        // 生成JWT token，包含用户ID、用户名、用户表和角色名称
        String token = tokenService.generateToken(u.getId(), username, "kuaidiyuan", "快递员");
        return R.ok().put("token", token);  // 返回成功响应和token
    }


    /**
     * 注册接口
     * @param kuaidiyuan 快递员实体对象
     * @return 注册结果
     */
    @IgnoreAuth
    @RequestMapping("/register")
    public R register(@RequestBody KuaidiyuanEntity kuaidiyuan){
        // ValidatorUtils.validateEntity(kuaidiyuan); // 参数验证（已注释）

        // 检查用户名是否已存在
        KuaidiyuanEntity u = kuaidiyuanService.selectOne(new EntityWrapper<KuaidiyuanEntity>().eq("yuangongzhanghao", kuaidiyuan.getYuangongzhanghao()));
        if(u != null) {
            return R.error("注册用户已存在");
        }

        // 生成用户ID并保存
        Long uId = new Date().getTime();
        kuaidiyuan.setId(uId);
        kuaidiyuanService.insert(kuaidiyuan);
        return R.ok();  // 返回注册成功
    }


    /**
     * 退出登录接口
     */
    @RequestMapping("/logout")
    public R logout(HttpServletRequest request) {
        // 使session失效，清除登录状态
        request.getSession().invalidate();
        return R.ok("退出成功");
    }

    /**
     * 获取当前登录用户信息
     */
    @RequestMapping("/session")
    public R getCurrUser(HttpServletRequest request){
        // 从session中获取用户ID
        Long id = (Long)request.getSession().getAttribute("userId");
        // 根据ID查询用户信息
        KuaidiyuanEntity u = kuaidiyuanService.selectById(id);
        return R.ok().put("data", u);  // 返回用户信息
    }

    /**
     * 密码重置接口
     * @param username 员工账号
     * @param request HTTP请求对象
     * @return 重置结果
     */
    @IgnoreAuth
    @RequestMapping(value = "/resetPass")
    public R resetPass(String username, HttpServletRequest request){
        // 检查用户是否存在
        KuaidiyuanEntity u = kuaidiyuanService.selectOne(new EntityWrapper<KuaidiyuanEntity>().eq("yuangongzhanghao", username));
        if(u == null) {
            return R.error("账号不存在");
        }

        // 重置密码为默认值"123456"
        u.setMima("123456");
        kuaidiyuanService.updateById(u);
        return R.ok("密码已重置为：123456");
    }


    /**
     * 后端列表 - 分页查询快递员信息（需要认证）
     */
    @RequestMapping("/page")
    public R page(@RequestParam Map<String, Object> params, KuaidiyuanEntity kuaidiyuan,
                  HttpServletRequest request){
        // 创建查询条件包装器
        EntityWrapper<KuaidiyuanEntity> ew = new EntityWrapper<KuaidiyuanEntity>();

        // 执行分页查询：模糊/等值查询 -> 范围查询 -> 排序 -> 分页
        PageUtils page = kuaidiyuanService.queryPage(params,
                MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, kuaidiyuan), params), params));

        return R.ok().put("data", page);
    }

    /**
     * 前端列表 - 分页查询快递员信息（无需认证）
     */
    @IgnoreAuth
    @RequestMapping("/list")
    public R list(@RequestParam Map<String, Object> params, KuaidiyuanEntity kuaidiyuan,
                  HttpServletRequest request){
        EntityWrapper<KuaidiyuanEntity> ew = new EntityWrapper<KuaidiyuanEntity>();

        PageUtils page = kuaidiyuanService.queryPage(params,
                MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, kuaidiyuan), params), params));
        return R.ok().put("data", page);
    }

    /**
     * 列表查询 - 查询所有匹配条件的快递员
     */
    @RequestMapping("/lists")
    public R list(KuaidiyuanEntity kuaidiyuan){
        EntityWrapper<KuaidiyuanEntity> ew = new EntityWrapper<KuaidiyuanEntity>();
        // 将所有非空属性转换为查询条件
        ew.allEq(MPUtil.allEQMapPre(kuaidiyuan, "kuaidiyuan"));
        return R.ok().put("data", kuaidiyuanService.selectListView(ew));
    }

    /**
     * 条件查询 - 根据条件查询单个快递员信息
     */
    @RequestMapping("/query")
    public R query(KuaidiyuanEntity kuaidiyuan){
        EntityWrapper<KuaidiyuanEntity> ew = new EntityWrapper<KuaidiyuanEntity>();
        ew.allEq(MPUtil.allEQMapPre(kuaidiyuan, "kuaidiyuan"));
        KuaidiyuanView kuaidiyuanView = kuaidiyuanService.selectView(ew);
        return R.ok("查询快递员成功").put("data", kuaidiyuanView);
    }

    /**
     * 后端详情 - 根据ID查询快递员详情（需要认证）
     */
    @RequestMapping("/info/{id}")
    public R info(@PathVariable("id") Long id){
        KuaidiyuanEntity kuaidiyuan = kuaidiyuanService.selectById(id);
        return R.ok().put("data", kuaidiyuan);
    }

    /**
     * 前端详情 - 根据ID查询快递员详情（无需认证）
     */
    @IgnoreAuth
    @RequestMapping("/detail/{id}")
    public R detail(@PathVariable("id") Long id){
        KuaidiyuanEntity kuaidiyuan = kuaidiyuanService.selectById(id);
        return R.ok().put("data", kuaidiyuan);
    }

    /**
     * 后端保存 - 新增快递员（需要认证）
     */
    @RequestMapping("/save")
    public R save(@RequestBody KuaidiyuanEntity kuaidiyuan, HttpServletRequest request){
        // 生成唯一ID：时间戳 + 随机数
        kuaidiyuan.setId(new Date().getTime() + new Double(Math.floor(Math.random() * 1000)).longValue());
        // ValidatorUtils.validateEntity(kuaidiyuan); // 参数验证（已注释）

        // 检查用户名是否已存在
        KuaidiyuanEntity u = kuaidiyuanService.selectOne(new EntityWrapper<KuaidiyuanEntity>().eq("yuangongzhanghao", kuaidiyuan.getYuangongzhanghao()));
        if(u != null) {
            return R.error("用户已存在");
        }

        // 重新设置ID并保存
        kuaidiyuan.setId(new Date().getTime());
        kuaidiyuanService.insert(kuaidiyuan);
        return R.ok();
    }

    /**
     * 前端保存 - 新增快递员（无需认证）
     */
    @RequestMapping("/add")
    public R add(@RequestBody KuaidiyuanEntity kuaidiyuan, HttpServletRequest request){
        // 生成唯一ID：时间戳 + 随机数
        kuaidiyuan.setId(new Date().getTime() + new Double(Math.floor(Math.random() * 1000)).longValue());
        // ValidatorUtils.validateEntity(kuaidiyuan); // 参数验证（已注释）

        // 检查用户名是否已存在
        KuaidiyuanEntity u = kuaidiyuanService.selectOne(new EntityWrapper<KuaidiyuanEntity>().eq("yuangongzhanghao", kuaidiyuan.getYuangongzhanghao()));
        if(u != null) {
            return R.error("用户已存在");
        }

        // 重新设置ID并保存
        kuaidiyuan.setId(new Date().getTime());
        kuaidiyuanService.insert(kuaidiyuan);
        return R.ok();
    }

    /**
     * 修改 - 更新快递员信息
     */
    @RequestMapping("/update")
    @Transactional  // 添加事务管理
    public R update(@RequestBody KuaidiyuanEntity kuaidiyuan, HttpServletRequest request){
        // ValidatorUtils.validateEntity(kuaidiyuan); // 参数验证（已注释）
        kuaidiyuanService.updateById(kuaidiyuan);  // 全字段更新
        return R.ok();
    }

    /**
     * 删除 - 批量删除快递员
     */
    @RequestMapping("/delete")
    public R delete(@RequestBody Long[] ids){
        // 将数组转换为List，执行批量删除
        kuaidiyuanService.deleteBatchIds(Arrays.asList(ids));
        return R.ok();
    }

    /**
     * 提醒接口 - 根据条件统计快递员数量
     * @param columnName 统计的列名
     * @param type 统计类型
     * @param map 包含统计条件的参数映射
     */
    @RequestMapping("/remind/{columnName}/{type}")
    public R remindCount(@PathVariable("columnName") String columnName, HttpServletRequest request,
                         @PathVariable("type") String type, @RequestParam Map<String, Object> map) {
        map.put("column", columnName);
        map.put("type", type);

        // 处理日期类型统计
        if(type.equals("2")) {
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
            Calendar c = Calendar.getInstance();
            Date remindStartDate = null;
            Date remindEndDate = null;

            // 处理开始日期
            if(map.get("remindstart") != null) {
                Integer remindStart = Integer.parseInt(map.get("remindstart").toString());
                c.setTime(new Date());
                c.add(Calendar.DAY_OF_MONTH, remindStart);
                remindStartDate = c.getTime();
                map.put("remindstart", sdf.format(remindStartDate));
            }
            // 处理结束日期
            if(map.get("remindend") != null) {
                Integer remindEnd = Integer.parseInt(map.get("remindend").toString());
                c.setTime(new Date());
                c.add(Calendar.DAY_OF_MONTH, remindEnd);
                remindEndDate = c.getTime();
                map.put("remindend", sdf.format(remindEndDate));
            }
        }

        // 构建查询条件
        Wrapper<KuaidiyuanEntity> wrapper = new EntityWrapper<KuaidiyuanEntity>();
        if(map.get("remindstart") != null) {
            wrapper.ge(columnName, map.get("remindstart"));  // 大于等于开始值
        }
        if(map.get("remindend") != null) {
            wrapper.le(columnName, map.get("remindend"));  // 小于等于结束值
        }

        // 执行统计查询
        int count = kuaidiyuanService.selectCount(wrapper);
        return R.ok().put("count", count);  // 返回统计结果
    }
}