// LoginHandler handles OAuth1 login requests by obtaining a request token and
// secret (temporary credentials) and adding it to the ctx. If successful,
// handling delegates to the success handler, otherwise to the failure handler.
//
// Typically, the success handler is an AuthRedirectHandler or a handler which
// stores the request token secret.
func LoginHandler(config *oauth1.Config, success, failure ctxh.ContextHandler) ctxh.ContextHandler {
if failure == nil {
failure = gologin.DefaultFailureHandler
}
fn := func(ctx context.Context, w http.ResponseWriter, req *http.Request) {
requestToken, requestSecret, err := config.RequestToken()
if err != nil {
ctx = gologin.WithError(ctx, err)
failure.ServeHTTP(ctx, w, req)
return
}
ctx = WithRequestToken(ctx, requestToken, requestSecret)
success.ServeHTTP(ctx, w, req)
}
return ctxh.ContextHandlerFunc(fn)
}
