Use vanilla HTTP handlers (refactoring)

ui/oauth2_redirect.go

@@ -0,0 +1,38 @@
+// Copyright 2017 Frédéric Guillot. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+package ui
+
+import (
+	"net/http"
+
+	"github.com/miniflux/miniflux/http/context"
+	"github.com/miniflux/miniflux/http/request"
+	"github.com/miniflux/miniflux/http/response"
+	"github.com/miniflux/miniflux/http/route"
+	"github.com/miniflux/miniflux/logger"
+	"github.com/miniflux/miniflux/ui/session"
+)
+
+// OAuth2Redirect redirects the user to the consent page to ask for permission.
+func (c *Controller) OAuth2Redirect(w http.ResponseWriter, r *http.Request) {
+	ctx := context.New(r)
+	sess := session.New(c.store, ctx)
+
+	provider := request.Param(r, "provider", "")
+	if provider == "" {
+		logger.Error("[OAuth2] Invalid or missing provider: %s", provider)
+		response.Redirect(w, r, route.Path(c.router, "login"))
+		return
+	}
+
+	authProvider, err := getOAuth2Manager(c.cfg).Provider(provider)
+	if err != nil {
+		logger.Error("[OAuth2] %v", err)
+		response.Redirect(w, r, route.Path(c.router, "login"))
+		return
+	}
+
+	response.Redirect(w, r, authProvider.GetRedirectURL(sess.NewOAuth2State()))
+}