add get ticket

internal/repos/tickets_repo/repo.go

@@ -2,10 +2,25 @@ package tickets_repo
 
 import (
 	"context"
+	"errors"
+	"time"
 
+	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgxpool"
 )
 
+var ErrTicketNotFound = errors.New("Билет не найден")
+
+type Info struct {
+	ID         int
+	Status     string
+	GameName   string
+	StartAt    time.Time
+	Location   *string
+	GameStatus string
+	UsedAt     *time.Time
+}
+
 type Repo struct {
 	pool *pgxpool.Pool
 }
@@ -37,3 +52,16 @@ func (r *Repo) CreateBatch(ctx context.Context, gameID int, tokenHashes [][]byte
 	}
 	return ids, nil
 }
+
+func (r *Repo) GetByHash(ctx context.Context, tokenHash []byte) (*Info, error) {
+	info := &Info{}
+	err := r.pool.QueryRow(ctx, `
+		SELECT t.id, t.status, g.name, g.start_at, g.location, g.status, t.used_at
+		FROM tickets t JOIN games g ON g.id = t.game_id
+		WHERE t.token_hash = $1`, tokenHash).Scan(
+		&info.ID, &info.Status, &info.GameName, &info.StartAt, &info.Location, &info.GameStatus, &info.UsedAt)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return nil, ErrTicketNotFound
+	}
+	return info, err
+}