package repository

import (
	"context"
	"fmt"

	"github.com/jackc/pgx/v5"
	"github.com/jackc/pgx/v5/pgconn"
	"github.com/jackc/pgx/v5/pgxpool"
)

type DBTX interface {
	Exec(ctx context.Context, sql string, args ...any) (pgconn.CommandTag, error)
	Query(ctx context.Context, sql string, args ...any) (pgx.Rows, error)
	QueryRow(ctx context.Context, sql string, args ...interface{}) pgx.Row
}

type TxManager struct {
	pool *pgxpool.Pool
}

func NewTxManager(pool *pgxpool.Pool) *TxManager {
	return &TxManager{pool: pool}
}

func (m *TxManager) WithTx(ctx context.Context, fn func(tx pgx.Tx) error) error {
	tx, err := m.pool.Begin(ctx)
	if err != nil {
		return fmt.Errorf("begin tx: %w", err)
	}
	defer func() {
		_ = tx.Rollback(ctx)
	}()

	if err := fn(tx); err != nil {
		return err
	}
	return tx.Commit(ctx)
}

func (m *TxManager) Pool() *pgxpool.Pool {
	return m.pool
}