143 lines
3.6 KiB
Go
143 lines
3.6 KiB
Go
// Copyright 2017 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package storage
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import (
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"database/sql"
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"fmt"
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"strings"
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"time"
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"github.com/miniflux/miniflux2/helper"
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"github.com/miniflux/miniflux2/model"
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)
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// HasIcon checks if the given feed has an icon.
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func (s *Storage) HasIcon(feedID int64) bool {
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var result int
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query := `SELECT count(*) as c FROM feed_icons WHERE feed_id=$1`
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s.db.QueryRow(query, feedID).Scan(&result)
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return result == 1
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}
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// IconByID returns an icon by the ID.
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func (s *Storage) IconByID(iconID int64) (*model.Icon, error) {
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defer helper.ExecutionTime(time.Now(), "[Storage:IconByID]")
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var icon model.Icon
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query := `SELECT id, hash, mime_type, content FROM icons WHERE id=$1`
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err := s.db.QueryRow(query, iconID).Scan(&icon.ID, &icon.Hash, &icon.MimeType, &icon.Content)
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if err == sql.ErrNoRows {
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return nil, nil
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} else if err != nil {
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return nil, fmt.Errorf("Unable to fetch icon by hash: %v", err)
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}
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return &icon, nil
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}
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// IconByHash returns an icon by the hash (checksum).
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func (s *Storage) IconByHash(icon *model.Icon) error {
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defer helper.ExecutionTime(time.Now(), "[Storage:IconByHash]")
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err := s.db.QueryRow(`SELECT id FROM icons WHERE hash=$1`, icon.Hash).Scan(&icon.ID)
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if err == sql.ErrNoRows {
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return nil
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} else if err != nil {
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return fmt.Errorf("Unable to fetch icon by hash: %v", err)
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}
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return nil
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}
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// CreateIcon creates a new icon.
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func (s *Storage) CreateIcon(icon *model.Icon) error {
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defer helper.ExecutionTime(time.Now(), "[Storage:CreateIcon]")
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query := `
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INSERT INTO icons
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(hash, mime_type, content)
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VALUES
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($1, $2, $3)
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RETURNING id
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`
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err := s.db.QueryRow(
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query,
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icon.Hash,
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normalizeMimeType(icon.MimeType),
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icon.Content,
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).Scan(&icon.ID)
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if err != nil {
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return fmt.Errorf("Unable to create icon: %v", err)
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}
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return nil
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}
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// CreateFeedIcon creates an icon and associate the icon to the given feed.
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func (s *Storage) CreateFeedIcon(feed *model.Feed, icon *model.Icon) error {
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defer helper.ExecutionTime(time.Now(), fmt.Sprintf("[Storage:CreateFeedIcon] feedID=%d", feed.ID))
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err := s.IconByHash(icon)
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if err != nil {
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return err
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}
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if icon.ID == 0 {
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err := s.CreateIcon(icon)
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if err != nil {
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return err
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}
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}
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_, err = s.db.Exec(`INSERT INTO feed_icons (feed_id, icon_id) VALUES ($1, $2)`, feed.ID, icon.ID)
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if err != nil {
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return fmt.Errorf("unable to create feed icon: %v", err)
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}
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return nil
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}
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// Icons returns all icons tht belongs to a user.
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func (s *Storage) Icons(userID int64) (model.Icons, error) {
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defer helper.ExecutionTime(time.Now(), fmt.Sprintf("[Storage:Icons] userID=%d", userID))
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query := `
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SELECT
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icons.id, icons.hash, icons.mime_type, icons.content
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FROM icons
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LEFT JOIN feed_icons ON feed_icons.icon_id=icons.id
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LEFT JOIN feeds ON feeds.id=feed_icons.feed_id
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WHERE feeds.user_id=$1
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`
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rows, err := s.db.Query(query, userID)
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if err != nil {
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return nil, fmt.Errorf("unable to fetch icons: %v", err)
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}
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defer rows.Close()
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var icons model.Icons
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for rows.Next() {
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var icon model.Icon
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err := rows.Scan(&icon.ID, &icon.Hash, &icon.MimeType, &icon.Content)
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if err != nil {
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return nil, fmt.Errorf("unable to fetch icons row: %v", err)
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}
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icons = append(icons, &icon)
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}
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return icons, nil
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}
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func normalizeMimeType(mimeType string) string {
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mimeType = strings.ToLower(mimeType)
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switch mimeType {
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case "image/png", "image/jpeg", "image/jpg", "image/webp", "image/svg+xml", "image/x-icon", "image/gif":
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return mimeType
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default:
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return "image/x-icon"
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}
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}
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