Add product features, Heleket crypto payments and order status icons.

internal/repository/reservation.go

@@ -0,0 +1,79 @@
+package repository
+
+import (
+	"context"
+	"database/sql"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"shop/internal/models"
+)
+
+type ReservationRepository struct {
+	pool *pgxpool.Pool
+}
+
+func NewReservationRepository(pool *pgxpool.Pool) *ReservationRepository {
+	return &ReservationRepository{pool: pool}
+}
+
+func (r *ReservationRepository) Create(ctx context.Context, res *models.Reservation) error {
+	return r.pool.QueryRow(ctx, `
+		INSERT INTO product_reservations (product_id, session_key, user_id, customer_name, customer_phone, expires_at)
+		VALUES ($1, $2, $3, $4, $5, $6)
+		RETURNING id, created_at
+	`, res.ProductID, res.SessionKey, res.UserID, res.CustomerName, res.CustomerPhone, res.ExpiresAt,
+	).Scan(&res.ID, &res.CreatedAt)
+}
+
+func (r *ReservationRepository) ActiveByProduct(ctx context.Context, productID int) (*models.Reservation, error) {
+	var res models.Reservation
+	var userID sql.NullInt64
+	err := r.pool.QueryRow(ctx, `
+		SELECT id, product_id, session_key, user_id, customer_name, customer_phone, expires_at, created_at
+		FROM product_reservations
+		WHERE product_id = $1 AND expires_at > NOW()
+		ORDER BY created_at DESC
+		LIMIT 1
+	`, productID).Scan(
+		&res.ID, &res.ProductID, &res.SessionKey, &userID,
+		&res.CustomerName, &res.CustomerPhone, &res.ExpiresAt, &res.CreatedAt,
+	)
+	if err != nil {
+		return nil, err
+	}
+	if userID.Valid {
+		id := int(userID.Int64)
+		res.UserID = &id
+	}
+	return &res, nil
+}
+
+func (r *ReservationRepository) ReplaceForProduct(ctx context.Context, res *models.Reservation) error {
+	tx, err := r.pool.Begin(ctx)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback(ctx)
+
+	_, err = tx.Exec(ctx, `DELETE FROM product_reservations WHERE product_id = $1`, res.ProductID)
+	if err != nil {
+		return err
+	}
+
+	err = tx.QueryRow(ctx, `
+		INSERT INTO product_reservations (product_id, session_key, user_id, customer_name, customer_phone, expires_at)
+		VALUES ($1, $2, $3, $4, $5, $6)
+		RETURNING id, created_at
+	`, res.ProductID, res.SessionKey, res.UserID, res.CustomerName, res.CustomerPhone, res.ExpiresAt,
+	).Scan(&res.ID, &res.CreatedAt)
+	if err != nil {
+		return err
+	}
+	return tx.Commit(ctx)
+}
+
+func (r *ReservationRepository) ExpiresIn() time.Duration {
+	return 24 * time.Hour
+}