Use vanilla HTTP handlers (refactoring)

ui/opml_export.go

@@ -0,0 +1,26 @@
+// Copyright 2018 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/response/html"
+	"github.com/miniflux/miniflux/http/response/xml"
+	"github.com/miniflux/miniflux/reader/opml"
+)
+
+// Export generates the OPML file.
+func (c *Controller) Export(w http.ResponseWriter, r *http.Request) {
+	ctx := context.New(r)
+	opml, err := opml.NewHandler(c.store).Export(ctx.UserID())
+	if err != nil {
+		html.ServerError(w, err)
+		return
+	}
+
+	xml.Attachment(w, "feeds.opml", opml)
+}