feat(api): validate configuration

src/app.module.ts

@@ -1,5 +1,4 @@
 import { Module } from "@nestjs/common";
-import { ConfigModule } from "@nestjs/config";
 import { ScheduleModule } from "@nestjs/schedule";
 import { ServeStaticModule } from "@nestjs/serve-static";
 import { join } from "path";
@@ -10,12 +9,14 @@ import { LoggerModule } from "./logger/logger.module";
 import { MusicLibraryModule } from "./music-library/music-library.module";
 import { SourcesModule } from "./sources/sources.module";
 import { UsersModule } from "./users/users.module";
+import { ConfigModule } from "./config/config.module";
 
 @Module({
   imports: [
-    ConfigModule.forRoot({ isGlobal: true }),
-    ScheduleModule.forRoot(),
+    LoggerModule,
+    ConfigModule,
     DatabaseModule,
+    ScheduleModule.forRoot(),
     ServeStaticModule.forRoot({
       rootPath: join(__dirname, "..", "static"),
       exclude: ["/api*"],
@@ -25,7 +26,6 @@ import { UsersModule } from "./users/users.module";
     SourcesModule,
     MusicLibraryModule,
     ListensModule,
-    LoggerModule,
   ],
 })
 export class AppModule {}

src/auth/spotify.strategy.ts

@@ -13,9 +13,9 @@ export class SpotifyStrategy extends PassportStrategy(Strategy) {
     super({
       clientID: config.get<string>("SPOTIFY_CLIENT_ID"),
       clientSecret: config.get<string>("SPOTIFY_CLIENT_SECRET"),
-      callbackURL: `${
-        config.get<string>("BASE_DOMAIN") || "http://localhost:3000"
-      }/api/v1/auth/spotify/callback`,
+      callbackURL: `${config.get<string>(
+        "APP_URL"
+      )}/api/v1/auth/spotify/callback`,
       scope: [
         "user-read-private",
         "user-read-email",

src/config/config.module.ts

@@ -0,0 +1,40 @@
+import * as Joi from "@hapi/joi";
+import { Module } from "@nestjs/common";
+import {
+  ConfigModule as NestConfigModule,
+  ConfigService,
+} from "@nestjs/config";
+
+@Module({
+  imports: [
+    NestConfigModule.forRoot({
+      isGlobal: true,
+      validationSchema: Joi.object({
+        // Application
+        NODE_ENV: Joi.string().valid("dev", "production").default("dev"),
+        PORT: Joi.number().default(3000),
+        APP_URL: Joi.string().default("http://localhost:3000"),
+
+        // JWT
+        JWT_SECRET: Joi.string().required(),
+        JWT_EXPIRATION_TIME: Joi.string().default("1d"),
+
+        // Spotify
+        SPOTIFY_CLIENT_ID: Joi.string().required(),
+        SPOTIFY_CLIENT_SECRET: Joi.string().required(),
+        SPOTIFY_FETCH_INTERVAL_MS: Joi.number().default(5 * 60 * 1000),
+        SPOTIFY_WEB_API_URL: Joi.string().default("https://api.spotify.com/"),
+        SPOTIFY_AUTH_API_URL: Joi.string().default(
+          "https://accounts.spotify.com/"
+        ),
+
+        // DB
+        DB_HOST: Joi.string().required(),
+        DB_USERNAME: Joi.string().required(),
+        DB_PASSWORD: Joi.string().required(),
+        DB_DATABASE: Joi.string().required(),
+      }),
+    }),
+  ],
+})
+export class ConfigModule {}

src/sources/spotify/spotify-api/spotify-api.module.ts

@@ -1,13 +1,15 @@
 import { HttpModule, Module } from "@nestjs/common";
+import { ConfigService } from "@nestjs/config";
 import { SpotifyApiService } from "./spotify-api.service";
 
 @Module({
   imports: [
     HttpModule.registerAsync({
-      useFactory: () => ({
+      useFactory: (config: ConfigService) => ({
         timeout: 5000,
-        baseURL: "https://api.spotify.com/",
+        baseURL: config.get<string>("SPOTIFY_WEB_API_URL"),
       }),
+      inject: [ConfigService],
     }),
   ],
   providers: [SpotifyApiService],

src/sources/spotify/spotify-auth/spotify-auth.module.ts

@@ -1,13 +1,15 @@
 import { HttpModule, Module } from "@nestjs/common";
+import { ConfigService } from "@nestjs/config";
 import { SpotifyAuthService } from "./spotify-auth.service";
 
 @Module({
   imports: [
     HttpModule.registerAsync({
-      useFactory: () => ({
+      useFactory: (config: ConfigService) => ({
         timeout: 5000,
-        baseURL: "https://accounts.spotify.com/",
+        baseURL: config.get<string>("SPOTIFY_AUTH_API_URL"),
       }),
+      inject: [ConfigService],
     }),
   ],
   providers: [SpotifyAuthService],