import { logger } from '@spine/logger';
import { resolve as pathResolve } from 'path';
import * as fs from 'fs';
import { getProjectPath } from '@erect/core/paths';
import { isErectProject } from './utils/isErectProject';

if (isErectProject()) {
  const log = logger('erect:env');

  const envFileNames = ['.env'];

  if (process.env.DEPLOYMENT != null) {
    envFileNames.push(`.env.${process.env.DEPLOYMENT}`);
  }

  if (process.env.NODE_ENV != null && process.env.NODE_ENV !== process.env.DEPLOYMENT) {
    if (process.env.NODE_ENV === 'development') {
      envFileNames.push('.env.development');
    }

    if (process.env.NODE_ENV === 'production') {
      envFileNames.push('.env.production');
    }
  }

  envFileNames.reverse();

  let found = false;
  for (const envFileName of envFileNames) {
    const envFile = pathResolve(getProjectPath(), envFileName);
    if (fs.existsSync(envFile)) {
      found = true;
      log.verbose(`Registering environment variables from ${envFile}`);
      require('dotenv').config({ path: envFile });
      break;
    }
  }

  if (!found) {
    log.verbose(`No environment file was registered`);
  }
}