iu
96268ee16c
Move physical file facts out of the photos table into an objects ledger:
- objects / photo_objects / variant_jobs tables (migration 000008)
- drop storage_key/thumb_key/preview_key/size/width/height/mime_type from
photos (migration 000009); they are derived via joins to the original object
- album-free storage keys: objects/{id}/{role}.{ext}
- explicit GC via pending/ready/deleting states; objects deleted only when no
photo references them
- background worker drives variant generation (durable variant_jobs) and GC
- copy/move are metadata-only; storage objects are shared between photos
- remove unused storage.DeletePrefix
Non-destructive to the external JSON API: size/dimensions/mime and URLs are
still returned, just sourced from the object layer.
OpenSpec change: media-object-layer
120 lines
3.8 KiB
Go
120 lines
3.8 KiB
Go
package albums
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import (
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"context"
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"errors"
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"github.com/jackc/pgx/v5"
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"github.com/jackc/pgx/v5/pgxpool"
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"shared-album/internal/httpx"
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"shared-album/internal/models"
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)
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var ErrNotFound = errors.New("album not found")
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type Store struct {
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pool *pgxpool.Pool
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}
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func NewStore(pool *pgxpool.Pool) *Store { return &Store{pool: pool} }
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func (s *Store) Create(ctx context.Context, a *models.Album) error {
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return s.pool.QueryRow(ctx,
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`INSERT INTO albums (id, owner_id, title, description, cover_photo_id)
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VALUES ($1, $2, $3, $4, $5)
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RETURNING created_at, updated_at`,
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a.ID, a.OwnerID, a.Title, a.Description, a.CoverPhotoID,
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).Scan(&a.CreatedAt, &a.UpdatedAt)
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}
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func (s *Store) OwnerID(ctx context.Context, id string) (string, error) {
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var ownerID string
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err := s.pool.QueryRow(ctx, `SELECT owner_id FROM albums WHERE id = $1`, id).Scan(&ownerID)
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if err != nil {
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if errors.Is(err, pgx.ErrNoRows) {
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return "", httpx.NotFound("album_not_found", "album not found")
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}
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return "", err
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}
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return ownerID, nil
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}
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func (s *Store) GetByID(ctx context.Context, id string) (*models.Album, error) {
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var a models.Album
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err := s.pool.QueryRow(ctx,
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`SELECT a.id, a.owner_id, a.title, a.description, a.cover_photo_id, a.created_at, a.updated_at,
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COALESCE(co.storage_key, ''),
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(SELECT count(*) FROM photos WHERE album_id = a.id),
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(SELECT count(*) FROM album_members WHERE album_id = a.id)
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FROM albums a
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LEFT JOIN photo_objects cpo ON cpo.photo_id = a.cover_photo_id AND cpo.role = 'thumb'
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LEFT JOIN objects co ON co.id = cpo.object_id
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WHERE a.id = $1`, id).
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Scan(&a.ID, &a.OwnerID, &a.Title, &a.Description, &a.CoverPhotoID, &a.CreatedAt, &a.UpdatedAt, &a.CoverThumbKey, &a.PhotosCount, &a.MembersCount)
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if err != nil {
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if errors.Is(err, pgx.ErrNoRows) {
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return nil, ErrNotFound
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}
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return nil, err
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}
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return &a, nil
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}
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func (s *Store) ListForUser(ctx context.Context, userID string) ([]models.Album, error) {
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rows, err := s.pool.Query(ctx,
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`SELECT a.id, a.owner_id, a.title, a.description, a.cover_photo_id, a.created_at, a.updated_at,
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COALESCE(co.storage_key, ''),
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(SELECT count(*) FROM photos WHERE album_id = a.id),
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(SELECT count(*) FROM album_members WHERE album_id = a.id)
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FROM albums a
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LEFT JOIN album_members m ON m.album_id = a.id AND m.user_id = $1
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LEFT JOIN photo_objects cpo ON cpo.photo_id = a.cover_photo_id AND cpo.role = 'thumb'
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LEFT JOIN objects co ON co.id = cpo.object_id
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WHERE a.owner_id = $1 OR m.user_id IS NOT NULL
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ORDER BY a.created_at DESC`, userID)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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out := []models.Album{}
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for rows.Next() {
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var a models.Album
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if err := rows.Scan(&a.ID, &a.OwnerID, &a.Title, &a.Description, &a.CoverPhotoID, &a.CreatedAt, &a.UpdatedAt, &a.CoverThumbKey, &a.PhotosCount, &a.MembersCount); err != nil {
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return nil, err
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}
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out = append(out, a)
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}
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return out, rows.Err()
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}
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func (s *Store) Update(ctx context.Context, a *models.Album) error {
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return s.pool.QueryRow(ctx,
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`UPDATE albums
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SET title = $2, description = $3, cover_photo_id = $4, updated_at = now()
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WHERE id = $1
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RETURNING updated_at`,
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a.ID, a.Title, a.Description, a.CoverPhotoID,
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).Scan(&a.UpdatedAt)
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}
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func (s *Store) Delete(ctx context.Context, id string) error {
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tag, err := s.pool.Exec(ctx, `DELETE FROM albums WHERE id = $1`, id)
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if err != nil {
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return err
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}
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if tag.RowsAffected() == 0 {
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return ErrNotFound
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}
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return nil
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}
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// TrashPhotosByAlbum soft-deletes all photos of an album so they can be restored
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// or permanently removed from the trash after the album is gone.
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func (s *Store) TrashPhotosByAlbum(ctx context.Context, albumID string) error {
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_, err := s.pool.Exec(ctx,
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`UPDATE photos SET deleted_at = now() WHERE album_id = $1 AND deleted_at IS NULL`, albumID)
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return err
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}
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