import dotenv from 'dotenv';
import { rootPath } from './constPath.js';
import { unwrap } from '@sammo/util';

let init = false;
const dirPath = rootPath
console.log(rootPath);

function initDotEnv() {
	if (process.env['NODE_ENV'] == 'production') {
		dotenv.config({ path: `${dirPath}/.env.production.local` });
		dotenv.config({ path: `${dirPath}/.env.local` });
		dotenv.config({ path: `${dirPath}/.env.production` });
	}
	else {
		dotenv.config({ path: `${dirPath}/.env.development.local` });
		dotenv.config({ path: `${dirPath}/.env.local` });
		dotenv.config({ path: `${dirPath}/.env.development` });
	}
	dotenv.config();
	init = true;
}

if (!init) {
	initDotEnv();
}

let _ownConfig: ReturnType<typeof generateConfig>|undefined = undefined;

function generateConfig() {
	return {
		port: parseInt(process.env['SERVER_PORT'] ?? "3001"),
		sessionSecret: unwrap(process.env['SESSION_SECRET']),
		apiRootPath: process.env['API_ROOT_PATH'] ?? '/api',
	} as const;
}

export function ownConfig() {
	if(_ownConfig !== undefined){
		return _ownConfig;
	}
	if(!init){
		initDotEnv();
	}
	_ownConfig = generateConfig();
	return _ownConfig;
}