package com.zsElectric.boot.app.api;

import cn.hutool.core.img.ImgUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.extra.qrcode.QrCodeUtil;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.zsElectric.boot.app.model.entity.*;
import com.zsElectric.boot.app.service.*;
import com.zsElectric.boot.core.web.Result;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import java.time.LocalDateTime;
import java.util.*;
import java.util.concurrent.TimeUnit;

/**
 * 用户API接口 - 面向小程序/APP
 */
@Slf4j
@RestController
@RequestMapping("/userApi")
@RequiredArgsConstructor
public class UserApiController {

    private final UserInfoService userInfoService;
    private final UserAccountService userAccountService;
    private final BannerInfoService bannerInfoService;
    private final UserFeedbackService userFeedbackService;
    private final NewUserDiscountService newUserDiscountService;
    private final ChargeOrderInfoService chargeOrderInfoService;
    private final UserFirmService userFirmService;
    private final FirmInfoService firmInfoService;
    private final AdvertisingService advertisingService;
    private final RedisTemplate<String, Object> redisTemplate;

    private final OkHttpClient okHttpClient = new OkHttpClient();
    private final ObjectMapper objectMapper = new ObjectMapper();
    private final String TOKEN_PREFIX = "user:token:";

    @Value("${wx.miniapp.app-id:}")
    private String wxAppid;

    @Value("${wx.miniapp.app-secret:}")
    private String wxAppSecret;

    /**
     * 新用户活动信息查询
     */
    @PostMapping("/checkNewUser")
    @Transactional(rollbackFor = Exception.class)
    public Result<?> checkNewUser(@RequestBody Map<String, Object> data, HttpServletRequest request) {
        UserInfo cacheUser = getUserFromToken(request);
        if (cacheUser == null) {
            return Result.failed("登录已过期");
        }

        List<NewUserDiscount> list = newUserDiscountService.lambdaQuery()
                .eq(NewUserDiscount::getStatus, 1)
                .le(NewUserDiscount::getBeginTime, LocalDateTime.now())
                .ge(NewUserDiscount::getEndTime, LocalDateTime.now())
                .list();

        if (list == null || list.isEmpty()) {
            return Result.success("暂无新用户活动");
        }

        NewUserDiscount discountInfo = list.get(0);

        long orderCount = chargeOrderInfoService.lambdaQuery()
                .eq(ChargeOrderInfo::getUserId, cacheUser.getId())
                .count();

        if (orderCount > 0) {
            return Result.success("不是新用户");
        }

        Map<String, Object> result = new HashMap<>();
        result.put("discountInfo", discountInfo);
        return Result.success(result);
    }

    /**
     * 微信小程序登录
     */
    @PostMapping("/login")
    @Transactional(rollbackFor = Exception.class)
    public Result<?> login(@RequestBody Map<String, Object> data, HttpServletRequest request) {
        UserInfo cacheUser = getUserFromToken(request);

        // 检查是否已登录
        if (cacheUser != null && cacheUser.getId() != null) {
            String token = request.getHeader("token");
            if (token == null) {
                return Result.failed("token不能为空");
            }

            if (data.get("checkStatus") != null) {
                UserInfo userInfo = userInfoService.getById(cacheUser.getId());
                saveUserToCache(token, userInfo);
                Map<String, Object> result = new HashMap<>();
                result.put("userInfo", userInfo);
                result.put("token", token);
                return Result.success(result);
            }

            Map<String, Object> result = new HashMap<>();
            result.put("userInfo", cacheUser);
            result.put("token", token);
            return Result.success(result);
        }

        String code = (String) data.get("code");
        log.info("[微信登录]code：{}", code);
        log.info("[微信登录]wxAppid：{}", wxAppid);

        try {
            // 调用微信接口获取openid
            String url = "https://api.weixin.qq.com/sns/jscode2session?appid=" + wxAppid +
                    "&secret=" + wxAppSecret +
                    "&grant_type=authorization_code&js_code=" + code;
            String body = okHttpClient.newCall(new Request.Builder().url(url).get().build())
                    .execute().body().string();

            log.info("[微信登录]回复报文：{}", body);
            JsonNode jsonNode = objectMapper.readTree(body);

            String openid = jsonNode.has("openid") ? jsonNode.get("openid").asText() : null;
            if (openid == null) {
                log.error("[微信登录]失败，回复报文：{}", body);
                return Result.failed("登录失败，请稍后再试");
            }

            // 查询或创建用户
            UserInfo userInfo = userInfoService.lambdaQuery()
                    .eq(UserInfo::getWechat, openid)
                    .one();

            if (userInfo == null) {
                userInfo = new UserInfo();
                userInfo.setWechat(openid);
                userInfoService.save(userInfo);

                // 创建账户
                UserAccount userAccount = new UserAccount();
                userAccount.setUserId(userInfo.getId());
                userAccountService.save(userAccount);
            }

            // 生成token并保存到缓存
            String loginToken = UUID.randomUUID().toString().replace("-", "");
            saveUserToCache(loginToken, userInfo);

            Map<String, Object> result = new HashMap<>();
            result.put("userInfo", userInfo);
            result.put("token", loginToken);
            return Result.success(result);

        } catch (Exception e) {
            log.error("[微信登录]异常", e);
            return Result.failed("登录失败，请稍后再试");
        }
    }

    /**
     * 获取手机号
     */
    @PostMapping("/getPhone")
    @Transactional(rollbackFor = Exception.class)
    public Result<?> getPhone(@RequestBody Map<String, Object> data, HttpServletRequest request) {
        UserInfo cacheUser = getUserFromToken(request);
        if (cacheUser == null) {
            return Result.failed("登录已过期");
        }

        String code = (String) data.get("code");

        try {
            // 获取access_token
            String tokenUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" +
                    wxAppid + "&secret=" + wxAppSecret;
            String tokenBody = okHttpClient.newCall(new Request.Builder().url(tokenUrl).get().build())
                    .execute().body().string();

            log.info("[获取token]回复报文：{}", tokenBody);
            JsonNode tokenNode = objectMapper.readTree(tokenBody);
            String accessToken = tokenNode.has("access_token") ? tokenNode.get("access_token").asText() : null;

            if (accessToken == null) {
                log.error("[获取token]失败，回复报文：{}", tokenBody);
                return Result.failed("获取失败，请稍后再试");
            }

            // 获取手机号
            Map<String, Object> phoneParams = new HashMap<>();
            phoneParams.put("code", code);
            okhttp3.RequestBody requestBody = okhttp3.RequestBody.create(
                    MediaType.parse("application/json"), objectMapper.writeValueAsString(phoneParams));

            String phoneUrl = "https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=" + accessToken;
            String phoneBody = okHttpClient.newCall(new Request.Builder().url(phoneUrl).post(requestBody).build())
                    .execute().body().string();

            log.info("[获取手机号]回复报文：{}", phoneBody);
            JsonNode phoneNode = objectMapper.readTree(phoneBody);
            Integer errcode = phoneNode.has("errcode") ? phoneNode.get("errcode").asInt() : -1;

            if (errcode != 0) {
                log.error("[获取手机号]失败，回复报文：{}", phoneBody);
                return Result.failed("获取失败，请稍后再试");
            }

            JsonNode phoneInfo = phoneNode.get("phone_info");
            String phone = phoneInfo.has("phoneNumber") ? phoneInfo.get("phoneNumber").asText() : null;

            // 检查手机号是否已存在
            UserInfo existUser = userInfoService.lambdaQuery()
                    .eq(UserInfo::getPhone, phone)
                    .ne(UserInfo::getGroupId, -1L)
                    .one();

            if (existUser != null) {
                // 删除原账户的微信绑定
                UserInfo oldUser = new UserInfo();
                oldUser.setId(cacheUser.getId());
                oldUser.setWechat(cacheUser.getId() + "_" + cacheUser.getWechat());
                userInfoService.updateById(oldUser);

                // 更新现有用户的微信id
                existUser.setWechat(cacheUser.getWechat());
                userInfoService.updateById(existUser);

                String token = request.getHeader("token");
                saveUserToCache(token, existUser);

                Map<String, Object> result = new HashMap<>();
                result.put("userInfo", existUser);
                return Result.success(result);
            }

            // 更新当前用户的手机号
            UserInfo updateUser = new UserInfo();
            updateUser.setId(cacheUser.getId());
            updateUser.setPhone(phone);
            userInfoService.updateById(updateUser);

            UserInfo userInfo = userInfoService.getById(cacheUser.getId());
            String token = request.getHeader("token");
            saveUserToCache(token, userInfo);

            Map<String, Object> result = new HashMap<>();
            result.put("userInfo", userInfo);
            return Result.success(result);

        } catch (Exception e) {
            log.error("[获取手机号]异常", e);
            return Result.failed("获取失败，请稍后再试");
        }
    }

    /**
     * 获取用户账户信息
     */
    @PostMapping("/getUserAccount")
    public Result<?> getUserAccount(HttpServletRequest request) {
        UserInfo cacheUser = getUserFromToken(request);
        if (cacheUser == null) {
            return Result.failed("登录已过期");
        }

        UserInfo user = userInfoService.getById(cacheUser.getId());
        if (user == null) {
            return Result.failed("未查询到用户信息");
        }

        if (ObjectUtil.isNotEmpty(user.getFirmId())) {
            FirmInfo firmInfo = firmInfoService.getById(user.getFirmId());
            if (ObjectUtil.isNotEmpty(firmInfo)) {
                user.setFirmInfoName(firmInfo.getName());
                user.setFirmType(firmInfo.getStatus());
            }
        }

        Map<String, Object> result = new HashMap<>();
        result.put("accountInfo", user);
        return Result.success(result);
    }

    /**
     * 获取Banner列表
     */
    @PostMapping("/getBanners")
    public Result<?> getBanners() {
        List<BannerInfo> banners = bannerInfoService.lambdaQuery()
                .eq(BannerInfo::getStatus, 1)
                .orderByAsc(BannerInfo::getSort)
                .list();

        Map<String, Object> result = new HashMap<>();
        result.put("banners", banners);
        return Result.success(result);
    }

    /**
     * 获取广告位
     */
    @PostMapping("/getAdvertising")
    public Result<?> getAdvertising() {
        List<Advertising> banners = advertisingService.lambdaQuery()
                .eq(Advertising::getStatus, 1)
                .orderByAsc(Advertising::getSort)
                .list();

        Map<String, Object> result = new HashMap<>();
        result.put("banners", banners);
        return Result.success(result);
    }

    /**
     * 新增用户反馈
     */
    @PostMapping("/addUserFeedback")
    @Transactional(rollbackFor = Exception.class)
    public Result<?> addUserFeedback(@RequestBody UserFeedback data, HttpServletRequest request) {
        UserInfo cacheUser = getUserFromToken(request);
        if (cacheUser == null) {
            return Result.failed("登录已过期");
        }

        data.setUserId(cacheUser.getId());
        boolean saved = userFeedbackService.save(data);
        if (!saved) {
            return Result.failed("提交失败");
        }

        return Result.success();
    }

    /**
     * 查看用户反馈
     */
    @PostMapping("/getMyFeekBack")
    public Result<?> getMyFeekBack(HttpServletRequest request) {
        UserInfo cacheUser = getUserFromToken(request);
        if (cacheUser == null) {
            return Result.failed("登录已过期");
        }

        List<UserFeedback> list = userFeedbackService.lambdaQuery()
                .eq(UserFeedback::getUserId, cacheUser.getId())
                .orderByDesc(UserFeedback::getCreateTime)
                .list();

        Map<String, Object> result = new HashMap<>();
        result.put("list", list);
        return Result.success(result);
    }

    /**
     * 上传文件
     */
    @PostMapping("/upFile")
    public Result<?> upFile(@RequestParam("file") MultipartFile file) {
        try {
            // TODO: 实现文件上传逻辑，使用ossProperties配置
            String fileUrl = "/uploads/" + file.getOriginalFilename();
            Map<String, Object> result = new HashMap<>();
            result.put("fileUrl", fileUrl);
            return Result.success(result);
        } catch (Exception e) {
            log.error("文件上传失败", e);
            return Result.failed("文件上传失败");
        }
    }

    /**
     * 获取邀请员工的二维码
     */
    @GetMapping("/get-invite-qr")
    public void getInviteQr(HttpServletRequest request, HttpServletResponse response) {
        try {
            UserInfo cacheUser = getUserFromToken(request);
            if (cacheUser == null) {
                return;
            }

            UserFirm firm = userFirmService.lambdaQuery()
                    .eq(UserFirm::getUserId, cacheUser.getId())
                    .one();
            if (ObjectUtil.isEmpty(firm)) {
                return;
            }

            if (firm.getUserType() == 2) {
                return;
            }

            String content = "https://cd.api.zswlgz.com/deviceid?frimId=" + firm.getFirmId();
            QrCodeUtil.generate(content, 300, 300, ImgUtil.IMAGE_TYPE_PNG, response.getOutputStream());
        } catch (Exception e) {
            log.error("生成二维码失败", e);
        }
    }

    /**
     * 邀请员工加入企业
     */
    @PostMapping("/add-firm-user")
    public Result<?> addFirmUser(HttpServletRequest request, @RequestParam("firmId") Long firmId) {
        UserInfo cacheUser = getUserFromToken(request);
        if (cacheUser == null) {
            return Result.failed("登录已过期");
        }

        UserFirm userFirm = new UserFirm();
        userFirm.setUserId(cacheUser.getId());
        userFirm.setFirmId(firmId);
        userFirm.setUserType(2L);

        try {
            boolean saved = userFirmService.save(userFirm);
            if (saved) {
                FirmInfo firmInfo = firmInfoService.getById(firmId);
                return Result.success("你已经成功加入" + firmInfo.getName() + ",现在充电享受企业专享价");
            }
        } catch (Exception e) {
            return Result.failed(e.getMessage());
        }

        return Result.failed("加入失败");
    }

    /**
     * 从请求头获取token并从缓存中获取用户信息
     */
    private UserInfo getUserFromToken(HttpServletRequest request) {
        String token = request.getHeader("token");
        if (token == null) {
            return null;
        }

        Object obj = redisTemplate.opsForValue().get(TOKEN_PREFIX + token);
        if (obj instanceof UserInfo) {
            // 刷新token过期时间
            redisTemplate.expire(TOKEN_PREFIX + token, 30, TimeUnit.MINUTES);
            return (UserInfo) obj;
        }
        return null;
    }

    /**
     * 保存用户信息到缓存
     */
    private void saveUserToCache(String token, UserInfo userInfo) {
        redisTemplate.opsForValue().set(TOKEN_PREFIX + token, userInfo, 30, TimeUnit.MINUTES);
    }
}