import path from 'path';
import fse from 'fs-extra';
import dotenv from 'dotenv';
import { Logger } from '@stackbit/types';

// dot env file loading - based on Next.js env loading
// https://github.com/vercel/next.js/blob/canary/packages/next-env/index.ts
export async function loadEnv(dir: string, logger?: Logger) {
    const mode = process.env.NODE_ENV === 'production' ? 'production' : 'development';
    const dotEnvFiles = [`.env.${mode}.local`, '.env.local', `.env.${mode}`, '.env'];
    for (const envFile of dotEnvFiles) {
        const envFilePath = path.join(dir, envFile);
        if (!(await fse.pathExists(envFilePath))) {
            continue;
        }
        logger?.debug(`[env] Loading env from ${envFilePath}`);
        dotenv.config({ path: envFilePath });
    }
}