package main

import (
	"context"
	"fmt"
	"net/http"

	"github.com/google/go-github/github"
	"golang.org/x/oauth2"
)

var (
	clientID     = "9f75836d51c1cb447fa5"
	clientSecret = "3cbedeb77ffa7593b3cc60985aa4212b2cfc0686"
	redirectURL  = "http://localhost:8080/callback"
)

func main() {
	// 创建OAuth配置
	oauthConf := &oauth2.Config{
		ClientID:     clientID,
		ClientSecret: clientSecret,
		RedirectURL:  redirectURL,
		Scopes:       []string{"user:email"},
		Endpoint: oauth2.Endpoint{
			AuthURL:  "https://github.com/login/oauth/authorize",
			TokenURL: "https://github.com/login/oauth/access_token",
		},
	}

	// 创建HTTP处理程序
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		// 重定向到GitHub OAuth登录页面
		url := oauthConf.AuthCodeURL("state", oauth2.AccessTypeOffline)
		http.Redirect(w, r, url, http.StatusTemporaryRedirect)
	})

	http.HandleFunc("/callback", func(w http.ResponseWriter, r *http.Request) {
		// 获取访问令牌
		code := r.URL.Query().Get("code")
		token, err := oauthConf.Exchange(context.Background(), code)
		if err != nil {
			http.Error(w, "Failed to exchange token", http.StatusBadRequest)
			return
		}

		// 创建GitHub客户端
		client := github.NewClient(oauthConf.Client(context.Background(), token))

		// 获取用户数据
		user, _, err := client.Users.Get(context.Background(), "")
		if err != nil {
			http.Error(w, "Failed to get user", http.StatusBadRequest)
			return
		}

		// 在控制台上打印用户数据
		fmt.Printf("Hello, %s\n", *user.Name)
	})

	// 启动HTTP服务器
	fmt.Println("Server listening on http://localhost:8080")
	if err := http.ListenAndServe(":8080", nil); err != nil {
		panic(err)
	}
}