package service

import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"strings"
	"time"

	"github.com/parnurzeal/gorequest"
)

// UserInfo 孔网用户信息结构体
type UserInfo struct {
	UserID   int64  `json:"userId"`   // 用户ID
	Nickname string `json:"nickname"` // 用户昵称
	Mobile   string `json:"mobile"`   // 手机号
	Token    string `json:"token"`    // token
}

/*
 * 孔网登录
 * param username[string] 孔网用户名
 * param password[string] 孔网密码
 * return token,错误信息
 */
func OutKfzLogin(username, password string) (string, error) {
	if username == "" || password == "" {
		return "", fmt.Errorf("请输入用户名和密码!")
	}

	formData := map[string]string{
		"loginName": username,
		"loginPass": password,
		"returnUrl": "http://user.kongfz.com/",
	}
	loginUrl := "https://login.kongfz.com/Pc/Login/account"

	resp, body, errs := gorequest.New().
		Post(loginUrl).
		Set("Content-Type", "application/x-www-form-urlencoded").
		Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36").
		Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8").
		Send(formData).
		Timeout(15 * time.Second).
		End()

	if len(errs) > 0 {
		return "", fmt.Errorf("登录请求失败: %v", errs)
	}

	if resp.StatusCode != http.StatusOK {
		return "", fmt.Errorf("登录失败(HTTP状态码: %d)", resp.StatusCode)
	}

	cookie := resp.Header.Get("Set-Cookie")
	if strings.Contains(body, "window.location.href='https://login.kongfz.cn/Pc/Session/rsync") {
		if cookie == "" {
			return "", fmt.Errorf("登录成功但未获取到Cookie")
		}
		if strings.Contains(cookie, "PHPSESSID=") {
			token := strings.Split(strings.Split(cookie, "PHPSESSID=")[1], ";")[0]
			return token, nil
		}
		return "", fmt.Errorf("登录失败: 未找到PHPSESSID")
	}

	var res struct {
		Status  bool   `json:"status"`
		ErrCode int    `json:"errCode"`
		ErrInfo string `json:"errInfo"`
	}
	if err := json.Unmarshal([]byte(body), &res); err == nil {
		if res.ErrCode == 1001 || res.ErrCode == 1005 {
			return "", fmt.Errorf("账号或密码错误！")
		}
		if res.ErrInfo != "" {
			return "", fmt.Errorf("登录失败: %s", res.ErrInfo)
		}
	}

	return "", fmt.Errorf("登录失败，未知错误！")
}

/*
 * 获取孔网用户信息
 */
func OutKfzGetUserInfo(token string) (*UserInfo, error) {
	url := "https://user.kongfz.com/User/Index/getUserInfo/"
	resp, body, errs := gorequest.New().
		Get(url).
		Set("Cookie", fmt.Sprintf("PHPSESSID=%s", token)).
		Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36").
		Set("Accept", "application/json, text/plain, */*").
		Set("Accept-Language", "zh-CN,zh;q=0.9,en;q=0.8").
		Timeout(15 * time.Second).
		End()

	if len(errs) > 0 {
		return nil, fmt.Errorf("查询用户信息请求失败: %v", errs)
	}
	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("HTTP错误: %s", resp.Status)
	}

	var userInfo struct {
		Status bool `json:"status"`
		Data   struct {
			UserID   int64  `json:"userId"`
			Nickname string `json:"nickname"`
			Mobile   string `json:"mobile"`
		}
	}
	if err := json.Unmarshal([]byte(body), &userInfo); err != nil {
		return nil, fmt.Errorf("解析JSON失败: %w", err)
	}

	user := &UserInfo{}
	if !userInfo.Status {
		return nil, fmt.Errorf("获取用户失败！")
	}
	user.UserID = userInfo.Data.UserID
	user.Nickname = userInfo.Data.Nickname
	user.Mobile = userInfo.Data.Mobile
	return user, nil
}

// TryRefreshToken 尝试用保存的密码重新登录，更新token。成功返回新token
func (s *GoodsService) TryRefreshToken(tokenID int64, username, password string) (string, error) {
	log.Printf("[RefreshToken] 开始重新登录: username=%s, tokenID=%d", username, tokenID)
	newToken, err := OutKfzLogin(username, password)
	if err != nil {
		log.Printf("[RefreshToken] 重新登录失败: username=%s, 错误=%v", username, err)
		return "", err
	}
	// 更新数据库中的token
	if err := s.tokenRepository.UpdateToken(tokenID, newToken); err != nil {
		log.Printf("[RefreshToken] 更新Token失败: id=%d, 错误=%v", tokenID, err)
		return "", err
	}
	log.Printf("[RefreshToken] 重新登录并更新Token成功: username=%s, tokenID=%d", username, tokenID)
	return newToken, nil
}