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5d46478c01
* The fix with test * Fix test's foreign key issue * 2 more test cases * Fix the empty album test expectation * Return Nil for no thumbnail case instead of an empty album, as expected by frontend. More tests for thumbnail priority choice * Fix failed tests --------- Co-authored-by: Konstantin Koval
115 lines
2.8 KiB
Go
115 lines
2.8 KiB
Go
package models
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import (
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"crypto/md5"
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"encoding/hex"
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"gorm.io/gorm"
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)
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type Album struct {
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Model
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Title string `gorm:"not null"`
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ParentAlbumID *int `gorm:"index"`
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ParentAlbum *Album `gorm:"constraint:OnDelete:SET NULL;"`
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// OwnerID int `gorm:"not null"`
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// Owner User
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Owners []User `gorm:"many2many:user_albums;constraint:OnDelete:CASCADE;"`
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Path string `gorm:"not null"`
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PathHash string `gorm:"unique"`
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CoverID *int
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}
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func (a *Album) FilePath() string {
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return a.Path
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}
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func (a *Album) BeforeSave(tx *gorm.DB) (err error) {
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hash := md5.Sum([]byte(a.Path))
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a.PathHash = hex.EncodeToString(hash[:])
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return nil
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}
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// GetChildren performs a recursive query to get all the children of the album.
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// An optional filter can be provided that can be used to modify the query on the children.
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func (a *Album) GetChildren(db *gorm.DB, filter func(*gorm.DB) *gorm.DB) (children []*Album, err error) {
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return GetChildrenFromAlbums(db, filter, []int{a.ID})
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}
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func GetChildrenFromAlbums(db *gorm.DB, filter func(*gorm.DB) *gorm.DB, albumIDs []int) (children []*Album, err error) {
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query := db.Model(&Album{}).Table("sub_albums")
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if filter != nil {
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query = filter(query)
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}
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err = db.Raw(`
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WITH recursive sub_albums AS (
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SELECT * FROM albums AS root WHERE id IN (?)
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UNION ALL
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SELECT child.* FROM albums AS child JOIN sub_albums ON child.parent_album_id = sub_albums.id
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)
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?
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`, albumIDs, query).Find(&children).Error
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return children, err
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}
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func (a *Album) GetParents(db *gorm.DB, filter func(*gorm.DB) *gorm.DB) (parents []*Album, err error) {
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return GetParentsFromAlbums(db, filter, a.ID)
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}
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func GetParentsFromAlbums(db *gorm.DB, filter func(*gorm.DB) *gorm.DB, albumID int) (parents []*Album, err error) {
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query := db.Model(&Album{}).Table("super_albums")
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if filter != nil {
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query = filter(query)
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}
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err = db.Raw(`
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WITH recursive super_albums AS (
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SELECT * FROM albums AS leaf WHERE id = ?
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UNION ALL
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SELECT parent.* from albums AS parent JOIN super_albums ON parent.id = super_albums.parent_album_id
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)
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?
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`, albumID, query).Find(&parents).Error
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return parents, err
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}
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func (a *Album) Thumbnail(db *gorm.DB) (*Media, error) {
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var media Media
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if a.CoverID != nil {
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if err := db.First(&media, *a.CoverID).Error; err != nil {
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return nil, err
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}
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return &media, nil
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}
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query := `
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WITH RECURSIVE sub_albums AS (
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SELECT id FROM albums WHERE id = ?
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UNION ALL
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SELECT children.id FROM albums AS children
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INNER JOIN sub_albums ON children.parent_album_id = sub_albums.id
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)
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SELECT * FROM media
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WHERE media.album_id IN (SELECT id FROM sub_albums)
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LIMIT 1
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`
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if err := db.Raw(query, a.ID).Scan(&media).Error; err != nil {
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return nil, err
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}
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if media.ID == 0 {
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return nil, nil // Return nil for empty albums
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}
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return &media, nil
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}
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