mini-prog/backend/internal/store/postgres/db.go

package postgres

import (
	"context"
	"fmt"

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

type Store struct {
	pool *pgxpool.Pool
}

type Tx = pgx.Tx

func Open(ctx context.Context, databaseURL string) (*pgxpool.Pool, error) {
	pool, err := pgxpool.New(ctx, databaseURL)
	if err != nil {
		return nil, fmt.Errorf("open postgres pool: %w", err)
	}

	if err := pool.Ping(ctx); err != nil {
		pool.Close()
		return nil, fmt.Errorf("ping postgres: %w", err)
	}
	return pool, nil
}

func NewStore(pool *pgxpool.Pool) *Store {
	return &Store{pool: pool}
}

func (s *Store) Pool() *pgxpool.Pool {
	return s.pool
}

func (s *Store) Close() {
	if s.pool != nil {
		s.pool.Close()
	}
}

func (s *Store) Begin(ctx context.Context) (pgx.Tx, error) {
	return s.pool.Begin(ctx)
}