package services

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"net"
	"net/http"
	"os"
	"time"
)

// AuthService 认证服务
type AuthService struct {
	baseURL string
	client  *http.Client
}

// NewAuthService 创建认证服务实例
func NewAuthService() *AuthService {
	return &AuthService{
		baseURL: "https://admin.xiangbing.vip",
		client: &http.Client{
			Timeout: 30 * time.Second,
		},
	}
}

// LoginRequest 登录请求
type LoginRequest struct {
	Username   string `json:"Username"`
	Password   string `json:"Password"`
	Platform   string `json:"Platform"`
	PcName     string `json:"PcName"`
	PcUserName string `json:"PcUserName"`
	Ips        string `json:"Ips"`
}

// LoginResponse 登录响应
type LoginResponse struct {
	Code int         `json:"Code"`
	Msg  string      `json:"Msg"`
	Data interface{} `json:"Data"`
}

// Login 用户登录
func (s *AuthService) Login(ctx context.Context, username, password string) (*LoginResponse, error) {
	// 获取机器信息
	pcMachineName, _ := os.Hostname()
	pcUserName := os.Getenv("USERNAME")
	if pcUserName == "" {
		pcUserName = os.Getenv("USER")
	}

	// 获取 IP 地址
	var ips string
	addrs, err := net.InterfaceAddrs()
	if err == nil {
		for _, addr := range addrs {
			if ipnet, ok := addr.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
				if ipnet.IP.To4() != nil {
					ips = ipnet.IP.String()
					break
				}
			}
		}
	}

	reqData := LoginRequest{
		Username:   username,
		Password:   password,
		Platform:   "pc",
		PcName:     pcMachineName,
		PcUserName: pcUserName,
		Ips:        ips,
	}

	jsonData, err := json.Marshal(reqData)
	if err != nil {
		return nil, fmt.Errorf("序列化请求数据失败: %v", err)
	}

	req, err := http.NewRequestWithContext(ctx, "POST", s.baseURL+"/api/base/login", bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, fmt.Errorf("创建请求失败: %v", err)
	}

	req.Header.Set("Content-Type", "application/json")

	resp, err := s.client.Do(req)
	if err != nil {
		return nil, fmt.Errorf("请求失败: %v", err)
	}
	defer resp.Body.Close()

	var loginResp LoginResponse
	if err := json.NewDecoder(resp.Body).Decode(&loginResp); err != nil {
		return nil, fmt.Errorf("解析响应失败: %v", err)
	}

	return &loginResp, nil
}