func publishActivityToFacebook(w http.ResponseWriter, r *http.Request, act *plus.Activity, user *User) {
c := appengine.NewContext(r)
fc := facebooklib.NewFacebookClient(appConfig.FacebookAppId, appConfig.FacebookAppSecret)
fc.Transport = &urlfetch.Transport{Context: c}
fc.AccessToken = user.FBAccessToken
_ = w
var attachment *plus.ActivityObjectAttachments
obj := act.Object
kind := ""
content := ""
if act.Verb == "share" {
content = act.Annotation
//if content == "" {
// content = "Resharing " + obj.Actor.DisplayName
//}
kind = "status_share"
} else {
kind = "status"
if obj != nil {
if len(obj.Attachments) > 0 {
attachment = obj.Attachments[0]
kind = attachment.ObjectType
}
content = obj.Content
} else {
content = act.Title
}
}
content = removeTags(content)
var err os.Error
switch kind {
case "status":
// post a status update
err = fc.PostStatus(content)
return
case "article":
// post a link
err = fc.PostLink(content, attachment.Url)
default:
if obj != nil {
err = fc.PostLink(content, obj.Url)
}
}
if err == facebooklib.ErrOAuth {
user.DisableFacebook()
saveUser(r, user)
}
c.Debugf("publishActivityToFacebook(%s): err=%v\n", kind, err)
}
func fbHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
id := "" //r.FormValue("id")
if session, err := sessions.Session(r, "", "datastore"); err == nil {
id = session["userID"].(string)
}
if id == "" {
serveError(c, w, os.NewError("Missing ID Parameter"))
return
}
fc := facebooklib.NewFacebookClient(appConfig.FacebookAppId, appConfig.FacebookAppSecret)
fc.Transport = &urlfetch.Transport{Context: c}
code := r.FormValue("code")
if code == "" {
http.Redirect(w, r, fc.AuthURL("http://"+appConfig.AppHost+"/fb?id="+id, "offline_access,publish_stream"), http.StatusFound)
return
}
fc.RequestAccessToken(code, "http://"+appConfig.AppHost+"/fb?id="+id)
user := loadUser(r, id)
if user.Id == "" {
serveError(c, w, os.NewError("Invalid user ID"))
return
}
user.FBAccessToken = fc.AccessToken
fbuser, _ := fc.CurrentUser()
user.FBId = fbuser.Id
user.FBName = fbuser.Name
saveUser(r, &user)
http.Redirect(w, r, "/", http.StatusFound)
}