Refactor/env (#15)

* Refactor: Edit getEnvPath

- 서버에서 실행할 때, (staging, production)에는 env파일에서 로딩하지 않도록 수정

* Refactor: Set ignoreEnvFile

환경에 따라 서버에서 실행되는 경우 ignoreEnvFile==true 가 되도록 설정

* Refactor: refactor get NODE_ENV

NODE_ENV를 한번만 로드하고 사용할 수 있도록 수정
- 중복 코드 제거

Refactor: refactor get NODE_ENV

Refactor: refactor get NODE_ENV

src/app.module.ts

@@ -6,7 +6,7 @@ import { MikroOrmModule } from '@mikro-orm/nestjs';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
 import { AuthModule } from './auth/auth.module';
-import { getEnvPath } from './common/helper/env.helper';
+import { getNodeEnv, isIgnoreEnvFile } from './common/helper/env.helper';
 import { envValidation } from './common/helper/env.validation';
 import { MapModule } from './map/map.module';
 import { UserMapModule } from './user-map/user-map.module';
@@ -16,9 +16,10 @@ import { UserModule } from './user/user.module';
   imports: [
     ConfigModule.forRoot({
       isGlobal: true,
-      envFilePath: getEnvPath(`${__dirname}/..`),
+      envFilePath: `${__dirname}/../.${getNodeEnv}.env`,
       cache: true,
       validate: envValidation,
+      ignoreEnvFile: isIgnoreEnvFile,
     }),
     MikroOrmModule.forRoot(),
     AuthModule,

src/common/helper/env.helper.ts

@@ -1,7 +1,16 @@
-import { resolve } from 'path';
+import { InternalServerErrorException } from '@nestjs/common';
 
-export const getEnvPath = (dest: string): string => {
-  const env: string = process.env.NODE_ENV;
-  const filename: string = env ? `.${env}.env` : '.development.env';
-  return resolve(`${dest}/${filename}`);
-};
+import { NODE_ENVIRONMENT } from './env.validation';
+
+export const getNodeEnv = (() => {
+  const env = process.env.NODE_ENV;
+  const nodeEnv = NODE_ENVIRONMENT[env];
+  if (nodeEnv === undefined) {
+    throw new InternalServerErrorException('Unknown NODE_ENV');
+  }
+  return nodeEnv;
+})();
+
+export const isIgnoreEnvFile =
+  getNodeEnv === NODE_ENVIRONMENT.stage ||
+  getNodeEnv === NODE_ENVIRONMENT.production;

src/common/helper/env.validation.ts

@@ -13,16 +13,16 @@ const stage = 'stage';
 const production = 'production';
 const test = 'test';
 
-const nodeEnvironment = {
+export const NODE_ENVIRONMENT = {
   [development]: development,
   [stage]: stage,
   [production]: production,
   [test]: test,
-};
+} as const;
 
 export class EnvironmentVariables {
-  @IsEnum(nodeEnvironment)
-  NODE_ENV: keyof typeof nodeEnvironment;
+  @IsEnum(NODE_ENVIRONMENT)
+  NODE_ENV: keyof typeof NODE_ENVIRONMENT;
 
   @IsString()
   DB_HOST: string;