package postgres

import (
	"context"
	"fmt"

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

	"github.com/geo-platform/tenant-api/internal/shared/config"
)

func NewPool(ctx context.Context, cfg config.DatabaseConfig) (*pgxpool.Pool, error) {
	poolCfg, err := pgxpool.ParseConfig(cfg.DSN())
	if err != nil {
		return nil, fmt.Errorf("parse pool config: %w", err)
	}

	poolCfg.MaxConns = int32(cfg.MaxOpenConns)
	poolCfg.MinConns = int32(cfg.MaxIdleConns)

	pool, err := pgxpool.NewWithConfig(ctx, poolCfg)
	if err != nil {
		return nil, fmt.Errorf("create pool: %w", err)
	}

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

	return pool, nil
}