// config-options.spec.ts

import { buildConfigOptions } from './config-options';
import * as path from 'path';
import { ConfigModuleOptions } from '@nestjs/config';
import { Environment } from '../enums';

describe('buildConfigOptions', () => {
  const baseConfigDir = path.join(__dirname, '..', '..', 'config');

  it('should return global config options with .env and development environment file path', () => {
    process.env.NODE_ENV = Environment.DEV;

    const configOptions: ConfigModuleOptions = buildConfigOptions();

    expect(configOptions.isGlobal).toBe(true);
    expect(configOptions.envFilePath).toEqual(['.env', path.join(baseConfigDir, Environment.DEV + '.env')]);
  });

  it('should return global config options with .env and production environment file path', () => {
    process.env.NODE_ENV = Environment.PROD;

    const configOptions: ConfigModuleOptions = buildConfigOptions();

    expect(configOptions.isGlobal).toBe(true);
    expect(configOptions.envFilePath).toEqual(['.env', path.join(baseConfigDir, Environment.PROD + '.env')]);
  });

  it('should use default env file if NODE_ENV is not set', () => {
    delete process.env.NODE_ENV;

    const configOptions: ConfigModuleOptions = buildConfigOptions();

    expect(configOptions.isGlobal).toBe(true);
    expect(configOptions.envFilePath).toEqual([
      '.env',
      path.join(baseConfigDir, 'undefined.env'), // This simulates no NODE_ENV
    ]);
  });
});