package driver

import (
	"fmt"

	"github.com/jmoiron/sqlx"
	_ "github.com/lib/pq"
)

type PostgresDriver struct{}

func (d *PostgresDriver) Name() string {
	return "postgresql"
}

func (d *PostgresDriver) BuildDSN(config DBConfig) string {
	return fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=disable",
		config.Host,
		config.Port,
		config.Username,
		config.Password,
		config.Database)
}

func (d *PostgresDriver) Open(config DBConfig) (*sqlx.DB, error) {
	dsn := d.BuildDSN(config)
	db, err := sqlx.Open("postgres", dsn)
	if err != nil {
		return nil, err
	}

	// 使用公共的连接池配置函数
	configureConnectionPool(db, config)

	// 测试连接
	if err = db.Ping(); err != nil {
		return nil, err
	}

	return db, nil
}

func init() {
	Register(&PostgresDriver{})
}