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 | package main
import (
	"fmt"
	"html/template"
	"net/http"
	"os"
	"sort"
	"log"
	"math"
	"github.com/gorilla/pat"
	"github.com/gorilla/sessions"
	"github.com/markbates/goth"
	"github.com/markbates/goth/gothic"
	"github.com/markbates/goth/providers/amazon"
	"github.com/markbates/goth/providers/auth0"
	"github.com/markbates/goth/providers/battlenet"
	"github.com/markbates/goth/providers/bitbucket"
	"github.com/markbates/goth/providers/box"
	"github.com/markbates/goth/providers/dailymotion"
	"github.com/markbates/goth/providers/deezer"
	"github.com/markbates/goth/providers/digitalocean"
	"github.com/markbates/goth/providers/discord"
	"github.com/markbates/goth/providers/dropbox"
	"github.com/markbates/goth/providers/eveonline"
	"github.com/markbates/goth/providers/facebook"
	"github.com/markbates/goth/providers/fitbit"
	"github.com/markbates/goth/providers/github"
	"github.com/markbates/goth/providers/gitlab"
	"github.com/markbates/goth/providers/gplus"
	"github.com/markbates/goth/providers/heroku"
	"github.com/markbates/goth/providers/instagram"
	"github.com/markbates/goth/providers/intercom"
	"github.com/markbates/goth/providers/lastfm"
	"github.com/markbates/goth/providers/linkedin"
	"github.com/markbates/goth/providers/meetup"
	"github.com/markbates/goth/providers/onedrive"
	"github.com/markbates/goth/providers/openidConnect"
	"github.com/markbates/goth/providers/paypal"
	"github.com/markbates/goth/providers/salesforce"
	"github.com/markbates/goth/providers/slack"
	"github.com/markbates/goth/providers/soundcloud"
	"github.com/markbates/goth/providers/spotify"
	"github.com/markbates/goth/providers/steam"
	"github.com/markbates/goth/providers/stripe"
	"github.com/markbates/goth/providers/twitch"
	"github.com/markbates/goth/providers/twitter"
	"github.com/markbates/goth/providers/uber"
	"github.com/markbates/goth/providers/wepay"
	"github.com/markbates/goth/providers/xero"
	"github.com/markbates/goth/providers/yahoo"
	"github.com/markbates/goth/providers/yammer"
)
func init() {
	store := sessions.NewFilesystemStore(os.TempDir(), []byte("goth-example"))
	// set the maxLength of the cookies stored on the disk to a larger number to prevent issues with:
	// securecookie: the value is too long
	// when using OpenID Connect , since this can contain a large amount of extra information in the id_token
	// Note, when using the FilesystemStore only the session.ID is written to a browser cookie, so this is explicit for the storage on disk
	store.MaxLength(math.MaxInt64)
	gothic.Store = store
}
func main() {
	goth.UseProviders(
		twitter.New(os.Getenv("TWITTER_KEY"), os.Getenv("TWITTER_SECRET"), "http://localhost:3000/auth/twitter/callback"),
		// If you'd like to use authenticate instead of authorize in Twitter provider, use this instead.
		// twitter.NewAuthenticate(os.Getenv("TWITTER_KEY"), os.Getenv("TWITTER_SECRET"), "http://localhost:3000/auth/twitter/callback"),
		facebook.New(os.Getenv("FACEBOOK_KEY"), os.Getenv("FACEBOOK_SECRET"), "http://localhost:3000/auth/facebook/callback"),
		fitbit.New(os.Getenv("FITBIT_KEY"), os.Getenv("FITBIT_SECRET"), "http://localhost:3000/auth/fitbit/callback"),
		gplus.New(os.Getenv("GPLUS_KEY"), os.Getenv("GPLUS_SECRET"), "http://localhost:3000/auth/gplus/callback"),
		github.New(os.Getenv("GITHUB_KEY"), os.Getenv("GITHUB_SECRET"), "http://localhost:3000/auth/github/callback"),
		spotify.New(os.Getenv("SPOTIFY_KEY"), os.Getenv("SPOTIFY_SECRET"), "http://localhost:3000/auth/spotify/callback"),
		linkedin.New(os.Getenv("LINKEDIN_KEY"), os.Getenv("LINKEDIN_SECRET"), "http://localhost:3000/auth/linkedin/callback"),
		lastfm.New(os.Getenv("LASTFM_KEY"), os.Getenv("LASTFM_SECRET"), "http://localhost:3000/auth/lastfm/callback"),
		twitch.New(os.Getenv("TWITCH_KEY"), os.Getenv("TWITCH_SECRET"), "http://localhost:3000/auth/twitch/callback"),
		dropbox.New(os.Getenv("DROPBOX_KEY"), os.Getenv("DROPBOX_SECRET"), "http://localhost:3000/auth/dropbox/callback"),
		digitalocean.New(os.Getenv("DIGITALOCEAN_KEY"), os.Getenv("DIGITALOCEAN_SECRET"), "http://localhost:3000/auth/digitalocean/callback", "read"),
		bitbucket.New(os.Getenv("BITBUCKET_KEY"), os.Getenv("BITBUCKET_SECRET"), "http://localhost:3000/auth/bitbucket/callback"),
		instagram.New(os.Getenv("INSTAGRAM_KEY"), os.Getenv("INSTAGRAM_SECRET"), "http://localhost:3000/auth/instagram/callback"),
		intercom.New(os.Getenv("INTERCOM_KEY"), os.Getenv("INTERCOM_SECRET"), "http://localhost:3000/auth/intercom/callback"),
		box.New(os.Getenv("BOX_KEY"), os.Getenv("BOX_SECRET"), "http://localhost:3000/auth/box/callback"),
		salesforce.New(os.Getenv("SALESFORCE_KEY"), os.Getenv("SALESFORCE_SECRET"), "http://localhost:3000/auth/salesforce/callback"),
		amazon.New(os.Getenv("AMAZON_KEY"), os.Getenv("AMAZON_SECRET"), "http://localhost:3000/auth/amazon/callback"),
		yammer.New(os.Getenv("YAMMER_KEY"), os.Getenv("YAMMER_SECRET"), "http://localhost:3000/auth/yammer/callback"),
		onedrive.New(os.Getenv("ONEDRIVE_KEY"), os.Getenv("ONEDRIVE_SECRET"), "http://localhost:3000/auth/onedrive/callback"),
		battlenet.New(os.Getenv("BATTLENET_KEY"), os.Getenv("BATTLENET_SECRET"), "http://localhost:3000/auth/battlenet/callback"),
		eveonline.New(os.Getenv("EVEONLINE_KEY"), os.Getenv("EVEONLINE_SECRET"), "http://localhost:3000/auth/eveonline/callback"),
		//Pointed localhost.com to http://localhost:3000/auth/yahoo/callback through proxy as yahoo
		// does not allow to put custom ports in redirection uri
		yahoo.New(os.Getenv("YAHOO_KEY"), os.Getenv("YAHOO_SECRET"), "http://localhost.com"),
		slack.New(os.Getenv("SLACK_KEY"), os.Getenv("SLACK_SECRET"), "http://localhost:3000/auth/slack/callback"),
		stripe.New(os.Getenv("STRIPE_KEY"), os.Getenv("STRIPE_SECRET"), "http://localhost:3000/auth/stripe/callback"),
		wepay.New(os.Getenv("WEPAY_KEY"), os.Getenv("WEPAY_SECRET"), "http://localhost:3000/auth/wepay/callback", "view_user"),
		//By default paypal production auth urls will be used, please set PAYPAL_ENV=sandbox as environment variable for testing
		//in sandbox environment
		paypal.New(os.Getenv("PAYPAL_KEY"), os.Getenv("PAYPAL_SECRET"), "http://localhost:3000/auth/paypal/callback"),
		steam.New(os.Getenv("STEAM_KEY"), "http://localhost:3000/auth/steam/callback"),
		heroku.New(os.Getenv("HEROKU_KEY"), os.Getenv("HEROKU_SECRET"), "http://localhost:3000/auth/heroku/callback"),
		uber.New(os.Getenv("UBER_KEY"), os.Getenv("UBER_SECRET"), "http://localhost:3000/auth/uber/callback"),
		soundcloud.New(os.Getenv("SOUNDCLOUD_KEY"), os.Getenv("SOUNDCLOUD_SECRET"), "http://localhost:3000/auth/soundcloud/callback"),
		gitlab.New(os.Getenv("GITLAB_KEY"), os.Getenv("GITLAB_SECRET"), "http://localhost:3000/auth/gitlab/callback"),
		dailymotion.New(os.Getenv("DAILYMOTION_KEY"), os.Getenv("DAILYMOTION_SECRET"), "http://localhost:3000/auth/dailymotion/callback", "email"),
		deezer.New(os.Getenv("DEEZER_KEY"), os.Getenv("DEEZER_SECRET"), "http://localhost:3000/auth/deezer/callback", "email"),
		discord.New(os.Getenv("DISCORD_KEY"), os.Getenv("DISCORD_SECRET"), "http://localhost:3000/auth/discord/callback", discord.ScopeIdentify, discord.ScopeEmail),
		meetup.New(os.Getenv("MEETUP_KEY"), os.Getenv("MEETUP_SECRET"), "http://localhost:3000/auth/meetup/callback"),
		//Auth0 allocates domain per customer, a domain must be provided for auth0 to work
		auth0.New(os.Getenv("AUTH0_KEY"), os.Getenv("AUTH0_SECRET"), "http://localhost:3000/auth/auth0/callback", os.Getenv("AUTH0_DOMAIN")),
		xero.New(os.Getenv("XERO_KEY"), os.Getenv("XERO_SECRET"), "http://localhost:3000/auth/xero/callback"),
	)
	// OpenID Connect is based on OpenID Connect Auto Discovery URL (https://openid.net/specs/openid-connect-discovery-1_0-17.html)
	// because the OpenID Connect provider initialize it self in the New(), it can return an error which should be handled or ignored
	// ignore the error for now
	openidConnect, _ := openidConnect.New(os.Getenv("OPENID_CONNECT_KEY"), os.Getenv("OPENID_CONNECT_SECRET"), "http://localhost:3000/auth/openid-connect/callback", os.Getenv("OPENID_CONNECT_DISCOVERY_URL"))
	if openidConnect != nil {
		goth.UseProviders(openidConnect)
	}
	m := make(map[string]string)
	m["amazon"] = "Amazon"
	m["bitbucket"] = "Bitbucket"
	m["box"] = "Box"
	m["dailymotion"] = "Dailymotion"
	m["deezer"] = "Deezer"
	m["digitalocean"] = "Digital Ocean"
	m["discord"] = "Discord"
	m["dropbox"] = "Dropbox"
	m["eveonline"] = "Eve Online"
	m["facebook"] = "Facebook"
	m["fitbit"] = "Fitbit"
	m["github"] = "Github"
	m["gitlab"] = "Gitlab"
	m["soundcloud"] = "SoundCloud"
	m["spotify"] = "Spotify"
	m["steam"] = "Steam"
	m["stripe"] = "Stripe"
	m["twitch"] = "Twitch"
	m["uber"] = "Uber"
	m["wepay"] = "Wepay"
	m["yahoo"] = "Yahoo"
	m["yammer"] = "Yammer"
	m["gplus"] = "Google Plus"
	m["heroku"] = "Heroku"
	m["instagram"] = "Instagram"
	m["intercom"] = "Intercom"
	m["lastfm"] = "Last FM"
	m["linkedin"] = "Linkedin"
	m["onedrive"] = "Onedrive"
	m["battlenet"] = "Battlenet"
	m["paypal"] = "Paypal"
	m["twitter"] = "Twitter"
	m["salesforce"] = "Salesforce"
	m["slack"] = "Slack"
	m["meetup"] = "Meetup.com"
	m["auth0"] = "Auth0"
	m["openid-connect"] = "OpenID Connect"
	m["xero"] = "Xero"
	var keys []string
	for k := range m {
		keys = append(keys, k)
	}
	sort.Strings(keys)
	providerIndex := &ProviderIndex{Providers: keys, ProvidersMap: m}
	p := pat.New()
	p.Get("/auth/{provider}/callback", func(res http.ResponseWriter, req *http.Request) {
		user, err := gothic.CompleteUserAuth(res, req)
		if err != nil {
			fmt.Fprintln(res, err)
			return
		}
		t, _ := template.New("foo").Parse(userTemplate)
		t.Execute(res, user)
	})
	p.Get("/logout/{provider}", func(res http.ResponseWriter, req *http.Request) {
		gothic.Logout(res, req)
		res.Header().Set("Location", "/")
		res.WriteHeader(http.StatusTemporaryRedirect)
	})
	p.Get("/auth/{provider}", func(res http.ResponseWriter, req *http.Request) {
		// try to get the user without re-authenticating
		if gothUser, err := gothic.CompleteUserAuth(res, req); err == nil {
			t, _ := template.New("foo").Parse(userTemplate)
			t.Execute(res, gothUser)
		} else {
			gothic.BeginAuthHandler(res, req)
		}
	})
	p.Get("/", func(res http.ResponseWriter, req *http.Request) {
		t, _ := template.New("foo").Parse(indexTemplate)
		t.Execute(res, providerIndex)
	})
	log.Fatal(http.ListenAndServe(":3000", p))
}
type ProviderIndex struct {
	Providers    []string
	ProvidersMap map[string]string
}
var indexTemplate = `{{range $key,$value:=.Providers}}
    <p><a href="/auth/{{$value}}">Log in with {{index $.ProvidersMap $value}}</a></p>
{{end}}`
var userTemplate = `
<p><a href="/logout/{{.Provider}}">logout</a></p>
<p>Name: {{.Name}} [{{.LastName}}, {{.FirstName}}]</p>
<p>Email: {{.Email}}</p>
<p>NickName: {{.NickName}}</p>
<p>Location: {{.Location}}</p>
<p>AvatarURL: {{.AvatarURL}} <img src="{{.AvatarURL}}"></p>
<p>Description: {{.Description}}</p>
<p>UserID: {{.UserID}}</p>
<p>AccessToken: {{.AccessToken}}</p>
<p>ExpiresAt: {{.ExpiresAt}}</p>
<p>RefreshToken: {{.RefreshToken}}</p>
`
 |