/
login.go
134 lines (110 loc) · 2.74 KB
/
login.go
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package githubexample
import (
"fmt"
"io"
"net/http"
"net/url"
"strings"
"google.golang.org/appengine"
"google.golang.org/appengine/datastore"
"github.com/nu7hatch/gouuid"
)
func init() {
http.HandleFunc("/", handleIndex)
http.HandleFunc("/github-login", handleGithubLogin)
http.HandleFunc("/oauth2callback", handleOauth2Callback)
http.HandleFunc("/github-info", handleGithubInfo)
}
func handleIndex(res http.ResponseWriter, req *http.Request) {
io.WriteString(res, `<!DOCTYPE html>
<html>
<head></head>
<body>
<a href="/github-login">LOGIN WITH GITHUB</a>
</body>
</html>`)
}
var githubScopes = []string{
"user:email",
"read:org",
}
func handleGithubLogin(res http.ResponseWriter, req *http.Request) {
ctx := appengine.NewContext(req)
// get the session
session := getSession(ctx, req)
id, _ := uuid.NewV4()
values := make(url.Values)
values.Add("client_id", "767154e6915134caade5")
values.Add("redirect_uri", redirectURI)
values.Add("scope", strings.Join(githubScopes, ","))
values.Add("state", id.String())
// save the session
session.State = id.String()
putSession(ctx, res, session)
http.Redirect(res, req, fmt.Sprintf(
"https://github.com/login/oauth/authorize?%s",
values.Encode(),
), 302)
}
func handleOauth2Callback(res http.ResponseWriter, req *http.Request) {
ctx := appengine.NewContext(req)
api := NewGithubAPI(ctx)
// get the session
session := getSession(ctx, req)
state := req.FormValue("state")
code := req.FormValue("code")
if state != session.State {
http.Error(res, "invalid state", 401)
return
}
accessToken, err := api.getAccessToken(state, code)
if err != nil {
http.Error(res, err.Error(), 500)
return
}
api.accessToken = accessToken
username, err := api.getUsername()
if err != nil {
http.Error(res, err.Error(), 500)
return
}
session.Username = username
session.AccessToken = accessToken
putSession(ctx, res, session)
delayedGetStats.Call(ctx, accessToken, username)
http.Redirect(res, req, "/github-info", 302)
}
func handleGithubInfo(res http.ResponseWriter, req *http.Request) {
ctx := appengine.NewContext(req)
session := getSession(ctx, req)
var stats CommitStats
key := datastore.NewKey(ctx, "Stats", session.Username, 0, nil)
err := datastore.Get(ctx, key, &stats)
if err != nil {
http.Error(res, err.Error(), 500)
return
}
// stats, err := api.getCommitSummaryStats(since)
// if err != nil {
// http.Error(res, err.Error(), 500)
// return
// }
io.WriteString(res, `<!DOCTYPE html>
<html>
<head>
</head>
<body>
In the last month you have:
<table>
<tr>
<th>additions</th>
<td>`+fmt.Sprint(stats.Additions)+`</td>
</tr>
<tr>
<th>deletions</th>
<td>`+fmt.Sprint(stats.Deletions)+`</td>
</tr>
</table>
</body>
</html>`)
}