package cpdaily

import (
	"crypto/tls"
	"encoding/json"
	"fmt"
	"io"
	"strings"
	"time"

	"github.com/go-resty/resty/v2"
)

// 创建 Resty 客户端
func newMobileClient() *resty.Client {
	return resty.New().
		SetTimeout(15*time.Second).
		SetDoNotParseResponse(true).
		SetTLSClientConfig(&tls.Config{InsecureSkipVerify: true})
}

// FetchUserProfile 从 cpdaily 获取用户主页信息
// 使用 wecloud getCurrentUserId API 获取姓名+头像，不再尝试获取手机号
func FetchUserProfile(cookieMap map[string]string, wecloudUrl string) (*CpdailyUserProfile, error) {
	if wecloudUrl != "" {
		if p, err := fetchFromWecloud(wecloudUrl, cookieMap); err == nil && p.Name != "" {
			return p, nil
		}
	}

	return nil, fmt.Errorf("无法获取用户信息")
}

// fetchFromWecloud 通过 campusphere.net 获取用户基本信息
func fetchFromWecloud(wecloudUrl string, cookieMap map[string]string) (*CpdailyUserProfile, error) {
	host := strings.TrimSuffix(wecloudUrl, "/")
	cookieStr := cookiesToStr(cookieMap)

	client := newMobileClient()
	resp, err := client.R().
		SetHeader("User-Agent", "Mozilla/5.0 (Linux; Android 15; Redmi Note 8 Pro) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/131.0.6778.81 Mobile Safari/537.36 cpdaily/9.9.6 wisedu/9.9.6").
		SetHeader("CpdailyClientType", "CPDAILY").
		SetHeader("Cookie", cookieStr).
		Get(host + "/wec-im-group/group/groupMember/getCurrentUserId")
	if err != nil {
		return nil, fmt.Errorf("请求 wecloud 用户信息失败: %w", err)
	}
	defer resp.RawBody().Close()

	body, _ := io.ReadAll(resp.RawBody())
	var result struct {
		ErrCode int    `json:"errCode"`
		ErrMsg  string `json:"errMsg"`
		Data    *struct {
			UserName    string `json:"userName"`
			AvatarUrl   string `json:"avatarUrl"`
			MobilePhone string `json:"mobilePhone"`
		} `json:"data"`
	}
	if err := json.Unmarshal(body, &result); err != nil {
		return nil, fmt.Errorf("解析 wecloud 用户信息失败: %w", err)
	}
	if result.ErrCode != 0 || result.Data == nil {
		return nil, fmt.Errorf("wecloud 用户信息接口错误(%d): %s", result.ErrCode, result.ErrMsg)
	}

	return &CpdailyUserProfile{
		Name:        result.Data.UserName,
		Img:         result.Data.AvatarUrl,
		MobilePhone: result.Data.MobilePhone,
	}, nil
}

// cookiesToStr 将 cookie map 转为 cookie 字符串
func cookiesToStr(cookieMap map[string]string) string {
	var parts []string
	for k, v := range cookieMap {
		parts = append(parts, k+"="+v)
	}
	return strings.Join(parts, "; ")
}

// ParseCookieJSON 将 JSON cookie 字符串解析为 map
func ParseCookieJSON(cookieJSON string) map[string]string {
	cookieMap := make(map[string]string)
	json.Unmarshal([]byte(cookieJSON), &cookieMap)
	return cookieMap
}