Work on sqlite support

api/database/database.go

@@ -18,13 +18,13 @@ import (
 )
 
 func getMysqlAddress() (*url.URL, error) {
-	address, err := url.Parse(os.Getenv("MYSQL_URL"))
+	address, err := url.Parse(os.Getenv("PHOTOVIEW_MYSQL_URL"))
 	if err != nil {
 		return nil, errors.Wrap(err, "Could not parse mysql url")
 	}
 
 	if address.String() == "" {
-		return nil, errors.New("Environment variable MYSQL_URL missing, exiting")
+		return nil, errors.New("Environment variable PHOTOVIEW_MYSQL_URL missing, exiting")
 	}
 
 	queryValues := address.Query()
@@ -35,6 +35,28 @@ func getMysqlAddress() (*url.URL, error) {
 	return address, nil
 }
 
+func getSqliteAddress() (*url.URL, error) {
+	path := os.Getenv("PHOTOVIEW_SQLITE_PATH")
+	if path == "" {
+		path = "photoview.db"
+	}
+
+	address, err := url.Parse(path)
+	if err != nil {
+		return nil, errors.Wrapf(err, "Could not parse sqlite url (%s)", path)
+	}
+
+	queryValues := address.Query()
+	queryValues.Add("cache", "shared")
+	queryValues.Add("mode", "rwc")
+	// queryValues.Add("_busy_timeout", "60000") // 1 minute
+	address.RawQuery = queryValues.Encode()
+
+	// log.Panicf("%s", address.String())
+
+	return address, nil
+}
+
 // SetupDatabase connects to the database using environment variables
 func SetupDatabase() (*gorm.DB, error) {
 
@@ -44,7 +66,8 @@ func SetupDatabase() (*gorm.DB, error) {
 	config.Logger = logger.Default.LogMode(logger.Info)
 
 	var databaseDialect gorm.Dialector
-	switch strings.ToLower(os.Getenv("PHOTOVIEW_DATABASE_DRIVER")) {
+	databaseDriver := strings.ToLower(os.Getenv("PHOTOVIEW_DATABASE_DRIVER"))
+	switch databaseDriver {
 	case "mysql":
 		mysqlAddress, err := getMysqlAddress()
 		if err != nil {
@@ -54,11 +77,11 @@ func SetupDatabase() (*gorm.DB, error) {
 		databaseDialect = mysql.Open(mysqlAddress.String())
 
 	case "sqlite":
-		path := os.Getenv("PHOTOVIEW_SQLITE_PATH")
-		if path == "" {
-			path = "photoview.db"
+		sqliteAddress, err := getSqliteAddress()
+		if err != nil {
+			return nil, err
 		}
-		databaseDialect = sqlite.Open(path)
+		databaseDialect = sqlite.Open(sqliteAddress.String())
 	}
 
 	db, err := gorm.Open(databaseDialect, &config)

api/example.env

@@ -1,6 +1,6 @@
 # Copy this file to .env
 
-MYSQL_URL=user:password@tcp(localhost)/dbname
+PHOTOVIEW_MYSQL_URL=user:password@tcp(localhost)/dbname
 
 PHOTOVIEW_LISTEN_IP=localhost
 PHOTOVIEW_LISTEN_PORT=4001

api/graphql/models/media.go

@@ -1,8 +1,6 @@
 package models
 
 import (
-	"crypto/md5"
-	"encoding/hex"
 	"path"
 	"strings"
 	"time"
@@ -40,12 +38,10 @@ func (Media) TableName() string {
 
 func (m *Media) BeforeSave(tx *gorm.DB) error {
 	// Update hashes
-	hash := md5.Sum([]byte(m.Path))
-	m.PathHash = hex.EncodeToString(hash[:])
+	m.PathHash = MD5Hash(m.Path)
 
 	if m.SideCarPath != nil {
-		hash = md5.Sum([]byte(*m.SideCarPath))
-		encodedHash := hex.EncodeToString(hash[:])
+		encodedHash := MD5Hash(*m.SideCarPath)
 		m.SideCarHash = &encodedHash
 	}
 

api/graphql/models/utils.go

@@ -1,6 +1,9 @@
 package models
 
 import (
+	"crypto/md5"
+	"encoding/hex"
+
 	"gorm.io/gorm"
 	"gorm.io/gorm/clause"
 )
@@ -38,3 +41,9 @@ func (filter *Filter) FormatSQL(tx *gorm.DB) *gorm.DB {
 
 	return tx
 }
+
+// MD5Hash hashes value to a 32 length digest, the result is the same as the MYSQL function md5()
+func MD5Hash(value string) string {
+	hash := md5.Sum([]byte(value))
+	return hex.EncodeToString(hash[:])
+}

api/scanner/scanner_album.go

@@ -20,7 +20,7 @@ func NewRootAlbum(db *gorm.DB, rootPath string, owner *models.User) (*models.Alb
 	}
 
 	var matchedAlbums []models.Album
-	if err := db.Where("path_hash = MD5(?)", rootPath).Find(&matchedAlbums).Error; err != nil {
+	if err := db.Where("path_hash = ?", models.MD5Hash(rootPath)).Find(&matchedAlbums).Error; err != nil {
 		return nil, err
 	}
 

api/scanner/scanner_media.go

@@ -109,7 +109,7 @@ func ScanMedia(tx *gorm.DB, mediaPath string, albumId int, cache *AlbumScannerCa
 	{
 		var media []*models.Media
 
-		result := tx.Where("path_hash = MD5(?)", mediaPath).Find(&media)
+		result := tx.Where("path_hash = ?", models.MD5Hash(mediaPath)).Find(&media)
 
 		if result.Error != nil {
 			return nil, false, errors.Wrap(result.Error, "scan media fetch from database")

api/scanner/scanner_user.go

@@ -80,7 +80,7 @@ func findAlbumsForUser(db *gorm.DB, user *models.User, album_cache *AlbumScanner
 
 			// check if album already exists
 			var albumResult []models.Album
-			result := tx.Where("path_hash = md5(?)", albumPath).Find(&albumResult)
+			result := tx.Where("path_hash = ?", models.MD5Hash(albumPath)).Find(&albumResult)
 			if result.Error != nil {
 				return result.Error
 			}