40 lines
1.0 KiB
Go
40 lines
1.0 KiB
Go
package db
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import (
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"context"
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"database/sql"
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"errors"
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"fmt"
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)
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// NullStringOr returns n.String if valid and non-empty, otherwise fallback
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func NullStringOr(n sql.NullString, fallback string) string {
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if n.Valid && n.String != "" {
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return n.String
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}
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return fallback
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}
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// DisplayTitle returns the English title, falling back to Japanese then original
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func DisplayTitle(titleEnglish, titleJapanese sql.NullString, titleOriginal string) string {
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return NullStringOr(titleEnglish, NullStringOr(titleJapanese, titleOriginal))
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}
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func (r GetUserWatchListRow) DisplayTitle() string {
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return DisplayTitle(r.TitleEnglish, r.TitleJapanese, r.TitleOriginal)
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}
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// BeginTx starts a transaction and returns the Queries wrapper bound to it
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func BeginTx(ctx context.Context, db *sql.DB) (*Queries, *sql.Tx, error) {
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if db == nil {
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return nil, nil, errors.New("database unavailable")
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}
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tx, err := db.BeginTx(ctx, nil)
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if err != nil {
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return nil, nil, fmt.Errorf("failed to begin transaction: %w", err)
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}
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return New(tx), tx, nil
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}
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