import postgres from 'postgres'

let client = null

/**
 * PostgreSQL 클라이언트 조회
 * @returns {ReturnType<typeof postgres> | null} PostgreSQL 클라이언트
 */
export const getPostgresClient = () => {
  const config = useRuntimeConfig()

  if (!config.databaseUrl) {
    return null
  }

  if (!client) {
    client = postgres(config.databaseUrl, {
      max: 5,
      idle_timeout: 20,
      connect_timeout: 10
    })
  }

  return client
}