Refactor packages to have more idiomatic code base

ui/icon.go

@@ -0,0 +1,33 @@
+// 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 (
+	"time"
+
+	"github.com/miniflux/miniflux/http/handler"
+)
+
+// ShowIcon shows the feed icon.
+func (c *Controller) ShowIcon(ctx *handler.Context, request *handler.Request, response *handler.Response) {
+	iconID, err := request.IntegerParam("iconID")
+	if err != nil {
+		response.HTML().BadRequest(err)
+		return
+	}
+
+	icon, err := c.store.IconByID(iconID)
+	if err != nil {
+		response.HTML().ServerError(err)
+		return
+	}
+
+	if icon == nil {
+		response.HTML().NotFound()
+		return
+	}
+
+	response.Cache(icon.MimeType, icon.Hash, icon.Content, 72*time.Hour)
+}