package repository import ( "context" "fmt" "github.com/jackc/pgx/v4/pgxpool" "github.com/christianselig/apollo-backend/internal/domain" ) type postgresWatcherRepository struct { pool *pgxpool.Pool } func NewPostgresWatcher(pool *pgxpool.Pool) domain.WatcherRepository { return &postgresWatcherRepository{pool: pool} } func (p *postgresWatcherRepository) fetch(ctx context.Context, query string, args ...interface{}) ([]domain.Watcher, error) { rows, err := p.pool.Query(ctx, query, args...) if err != nil { return nil, err } defer rows.Close() var watchers []domain.Watcher for rows.Next() { var watcher domain.Watcher if err := rows.Scan( &watcher.ID, &watcher.DeviceID, &watcher.AccountID, &watcher.SubredditID, &watcher.Upvotes, &watcher.Keyword, &watcher.Flair, &watcher.Domain, ); err != nil { return nil, err } watchers = append(watchers, watcher) } return watchers, nil } func (p *postgresWatcherRepository) GetByID(ctx context.Context, id int64) (domain.Watcher, error) { query := ` SELECT id, device_id, account_id, subreddit_id, upvotes, keyword, flair, domain FROM watchers WHERE id = $1` watchers, err := p.fetch(ctx, query, id) if err != nil { return domain.Watcher{}, err } if len(watchers) == 0 { return domain.Watcher{}, domain.ErrNotFound } return watchers[0], nil } func (p *postgresWatcherRepository) GetBySubredditID(ctx context.Context, id int64) ([]domain.Watcher, error) { query := ` SELECT id, device_id, account_id, subreddit_id, upvotes, keyword, flair, domain FROM watchers WHERE subreddit_id = $1` return p.fetch(ctx, query, id) } func (p *postgresWatcherRepository) Create(ctx context.Context, watcher *domain.Watcher) error { query := ` INSERT INTO watchers (device_id, account_id, subreddit_id, upvotes, keyword, flair, domain) VALUES ($1, $2, $3, $4, $5, $6, $7) RETURNING id` return p.pool.QueryRow( ctx, query, &watcher.DeviceID, &watcher.AccountID, &watcher.SubredditID, &watcher.Upvotes, &watcher.Keyword, &watcher.Flair, &watcher.Domain, ).Scan(&watcher.ID) } func (p *postgresWatcherRepository) Update(ctx context.Context, watcher *domain.Watcher) error { query := ` UPDATE watchers SET upvotes = $2, keyword = $3, flair = $4, domain = $5, WHERE id = $1` res, err := p.pool.Exec( ctx, query, watcher.ID, watcher.Upvotes, watcher.Keyword, watcher.Flair, watcher.Domain, ) if res.RowsAffected() != 1 { return fmt.Errorf("weird behaviour, total rows affected: %d", res.RowsAffected()) } return err } func (p *postgresWatcherRepository) Delete(ctx context.Context, id int64) error { query := `DELETE FROM watchers WHERE id = $1` res, err := p.pool.Exec(ctx, query, id) if res.RowsAffected() != 1 { return fmt.Errorf("weird behaviour, total rows affected: %d", res.RowsAffected()) } return err }