oauth2 martini google

server.go

package main

import (
	"github.com/codegangsta/martini"
	"github.com/martini-contrib/oauth2"
	"github.com/martini-contrib/sessions"
)

func main() {
	m := martini.Classic()
	m.Use(sessions.Sessions("my_session", sessions.NewCookieStore([]byte("secret123"))))
	m.Use(oauth2.Google(&oauth2.Options{
		ClientId:     "1018452126237-b7skrr384p5bgbspr1ol5lmu696o58g3.apps.googleusercontent.com",
		ClientSecret: "pJ1Q3K0QuG7BbEGtmvQBpSxZ",
		RedirectURL:  "http://localhost:3000/oauth2callback",
		Scopes:       []string{"https://www.googleapis.com/auth/drive"},
	}))

	oauth2.PathLogin = "/login"
	oauth2.PathLogout = "/logout"

	m.Get("/", func() string {
		return `
<p>Home</p>

<ul>
  <li><a href="/login?next=/admin">admin</a></li>
  <li><a href="/logout">logout</a></li>
</ul>
`
	})

	m.Get("/admin", oauth2.LoginRequired, func() string {
		return `
<p>Admin</p>

<ul>
  <li><a href="/logout">logout</a></li>
</ul>
`
	})

	// tokens are injected to the handlers
	m.Get("/access_token", func(tokens oauth2.Tokens) (int, string) {
		if tokens != nil {
			return 200, tokens.AccessToken()
		}
		return 403, "not authenticated"
	})
	m.Run()
}