chore: add env schema validation

apps/recnet-api/src/app.module.ts

@@ -4,11 +4,13 @@ import { ConfigModule } from "@nestjs/config";
 import { HealthModule } from "./modules/health/health.module";
 import { UserModule } from "./modules/user/user.module";
 import * as CommonConfigs from "./config/common.config";
+import { parseEnv } from "./config/env.schema";
 
 @Module({
   imports: [
     ConfigModule.forRoot({
       isGlobal: true,
+      validate: (env) => parseEnv(env),
       load: [...Object.values(CommonConfigs)],
     }),
     HealthModule,

apps/recnet-api/src/config/common.config.ts

@@ -1,14 +1,18 @@
 import { registerAs } from "@nestjs/config";
 
+import { parseEnv } from "./env.schema";
+
+const parsedEnv = parseEnv(process.env);
+
 export const DBConfig = registerAs("db", () => ({
-  host: process.env.RDS_HOSTNAME || "localhost",
-  port: parseInt(process.env.RDS_PORT, 10) || 5432,
-  database: process.env.RDS_DB_NAME,
-  username: process.env.RDS_USERNAME,
-  password: process.env.RDS_PASSWORD,
+  host: parsedEnv.RDS_HOSTNAME,
+  port: parsedEnv.RDS_PORT,
+  database: parsedEnv.RDS_DB_NAME,
+  username: parsedEnv.RDS_USERNAME,
+  password: parsedEnv.RDS_PASSWORD,
 }));
 
 export const PrismaConfig = registerAs("prisma", () => ({
-  schema: process.env.PRISMA_SCHEMA || "prisma/schema.prisma",
-  migrate: process.env.DB_MIGRATE === "true",
+  schema: parsedEnv.PRISMA_SCHEMA,
+  migrate: parsedEnv.DB_MIGRATE,
 }));

apps/recnet-api/src/config/env.schema.ts

@@ -0,0 +1,22 @@
+import { z } from "zod";
+
+const nodeEnv = z.enum(["development", "production", "local", "test"]);
+
+export const EnvSchema = z.object({
+  PORT: z.coerce.number().optional().default(3000),
+  NODE_ENV: nodeEnv.default("development"),
+  // db config
+  RDS_HOSTNAME: z.string().optional().default("localhost"),
+  RDS_PORT: z.coerce.number().optional().default(5432),
+  RDS_DB_NAME: z.string(),
+  RDS_USERNAME: z.string(),
+  RDS_PASSWORD: z.string(),
+  // prisma config
+  PRISMA_SCHEMA: z.string().optional().default("prisma/schema.prisma"),
+  DB_MIGRATE: z.coerce.boolean().optional().default(false),
+});
+
+export const parseEnv = (env: Record<string, string>) => {
+  const parsedEnv = EnvSchema.parse(env);
+  return parsedEnv;
+};