package database

import (
	"antrian-operasi/internal/config"
	"database/sql"
	"fmt"

	_ "github.com/jackc/pgx/v5/stdlib"
)

func (s *service) openPostgresConnection(config config.DatabaseConfig) (*sql.DB, error) {
	// Build connection string with security parameters
	// Convert timeout durations to seconds for pgx
	connectTimeoutSec := int(config.ConnectTimeout.Seconds())
	statementTimeoutSec := int(config.StatementTimeout.Seconds())

	connStr := fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=%s connect_timeout=%d statement_timeout=%d",
		config.Host,
		config.Port,
		config.Username,
		config.Password,
		config.Database,
		config.SSLMode,
		connectTimeoutSec,
		statementTimeoutSec,
	)

	if config.Schema != "" {
		connStr += " search_path=" + config.Schema
	}

	// Add SSL configuration if required
	if config.RequireSSL {
		connStr += " sslcert=" + config.SSLCert + " sslkey=" + config.SSLKey + " sslrootcert=" + config.SSLRootCert
	}

	// Open connection using standard database/sql interface
	db, err := sql.Open("pgx", connStr)
	if err != nil {
		return nil, fmt.Errorf("failed to open PostgreSQL connection: %w", err)
	}

	return db, nil
}