First commit

storage/icon.go

@@ -0,0 +1,106 @@
+// 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 storage
+
+import (
+	"database/sql"
+	"fmt"
+	"github.com/miniflux/miniflux2/helper"
+	"github.com/miniflux/miniflux2/model"
+	"strings"
+	"time"
+)
+
+func (s *Storage) HasIcon(feedID int64) bool {
+	var result int
+	query := `SELECT count(*) as c FROM feed_icons WHERE feed_id=$1`
+	s.db.QueryRow(query, feedID).Scan(&result)
+	return result == 1
+}
+
+func (s *Storage) GetIconByID(iconID int64) (*model.Icon, error) {
+	defer helper.ExecutionTime(time.Now(), "[Storage:GetIconByID]")
+
+	var icon model.Icon
+	query := `SELECT id, hash, mime_type, content FROM icons WHERE id=$1`
+	err := s.db.QueryRow(query, iconID).Scan(&icon.ID, &icon.Hash, &icon.MimeType, &icon.Content)
+	if err == sql.ErrNoRows {
+		return nil, nil
+	} else if err != nil {
+		return nil, fmt.Errorf("Unable to fetch icon by hash: %v", err)
+	}
+
+	return &icon, nil
+}
+
+func (s *Storage) GetIconByHash(icon *model.Icon) error {
+	defer helper.ExecutionTime(time.Now(), "[Storage:GetIconByHash]")
+
+	err := s.db.QueryRow(`SELECT id FROM icons WHERE hash=$1`, icon.Hash).Scan(&icon.ID)
+	if err == sql.ErrNoRows {
+		return nil
+	} else if err != nil {
+		return fmt.Errorf("Unable to fetch icon by hash: %v", err)
+	}
+
+	return nil
+}
+
+func (s *Storage) CreateIcon(icon *model.Icon) error {
+	defer helper.ExecutionTime(time.Now(), "[Storage:CreateIcon]")
+
+	query := `
+		INSERT INTO icons
+		(hash, mime_type, content)
+		VALUES
+		($1, $2, $3)
+		RETURNING id
+	`
+	err := s.db.QueryRow(
+		query,
+		icon.Hash,
+		normalizeMimeType(icon.MimeType),
+		icon.Content,
+	).Scan(&icon.ID)
+
+	if err != nil {
+		return fmt.Errorf("Unable to create icon: %v", err)
+	}
+
+	return nil
+}
+
+func (s *Storage) CreateFeedIcon(feed *model.Feed, icon *model.Icon) error {
+	defer helper.ExecutionTime(time.Now(), fmt.Sprintf("[Storage:CreateFeedIcon] feedID=%d", feed.ID))
+
+	err := s.GetIconByHash(icon)
+	if err != nil {
+		return err
+	}
+
+	if icon.ID == 0 {
+		err := s.CreateIcon(icon)
+		if err != nil {
+			return err
+		}
+	}
+
+	_, err = s.db.Exec(`INSERT INTO feed_icons (feed_id, icon_id) VALUES ($1, $2)`, feed.ID, icon.ID)
+	if err != nil {
+		return fmt.Errorf("Unable to create feed icon: %v", err)
+	}
+
+	return nil
+}
+
+func normalizeMimeType(mimeType string) string {
+	mimeType = strings.ToLower(mimeType)
+	switch mimeType {
+	case "image/png", "image/jpeg", "image/jpg", "image/webp", "image/svg+xml", "image/x-icon", "image/gif":
+		return mimeType
+	default:
+		return "image/x-icon"
+	}
+}