feat: integrate @t3-oss/env for environment variable management across the application

packages/auth/package.json

@@ -7,13 +7,16 @@
   "exports": {
     ".": "./src/index.ts",
     "./client": "./src/client.ts",
-    "./server": "./src/server.ts"
+    "./server": "./src/server.ts",
+    "./keys": "./src/keys.ts"
   },
   "dependencies": {
+    "@opencut/db": "workspace:*",
+    "@t3-oss/env-nextjs": "^0.13.8",
     "better-auth": "^1.1.1",
-    "@opencut/db": "workspace:*"
+    "zod": "^4.0.5"
   },
   "devDependencies": {
     "@types/node": "^22.10.2"
   }
-} 
+}

packages/auth/src/client.ts

@@ -1,5 +1,8 @@
 import { createAuthClient } from "better-auth/react";
+import { keys } from "./keys";
+
+const { NEXT_PUBLIC_BETTER_AUTH_URL } = keys();
 
 export const { signIn, signUp, useSession } = createAuthClient({
-  baseURL: process.env.NEXT_PUBLIC_BETTER_AUTH_URL!,
-}); 
+  baseURL: NEXT_PUBLIC_BETTER_AUTH_URL,
+});

packages/auth/src/index.ts

@@ -2,4 +2,7 @@
 export * from "./server";
 
 // Re-export client auth
-export * from "./client"; 
+export * from "./client"; 
+
+// Re-export keys
+export * from "./keys";

packages/auth/src/keys.ts

@@ -0,0 +1,20 @@
+import { createEnv } from "@t3-oss/env-nextjs";
+import { z } from "zod";
+
+export const keys = () =>
+  createEnv({
+    server: {
+      BETTER_AUTH_SECRET: z.string(),
+      GOOGLE_CLIENT_ID: z.string(),
+      GOOGLE_CLIENT_SECRET: z.string(),
+    },
+    client: {
+      NEXT_PUBLIC_BETTER_AUTH_URL: z.string().url(),
+    },
+    runtimeEnv: {
+      NEXT_PUBLIC_BETTER_AUTH_URL: process.env.NEXT_PUBLIC_BETTER_AUTH_URL,
+      BETTER_AUTH_SECRET: process.env.BETTER_AUTH_SECRET,
+      GOOGLE_CLIENT_ID: process.env.GOOGLE_CLIENT_ID,
+      GOOGLE_CLIENT_SECRET: process.env.GOOGLE_CLIENT_SECRET,
+    },
+  });

packages/auth/src/server.ts

@@ -1,13 +1,16 @@
 import { betterAuth } from "better-auth";
 import { drizzleAdapter } from "better-auth/adapters/drizzle";
 import { db } from "@opencut/db";
+import { keys } from "./keys";
+
+const { NEXT_PUBLIC_BETTER_AUTH_URL, BETTER_AUTH_SECRET, GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET } = keys()
 
 export const auth = betterAuth({
   database: drizzleAdapter(db, {
     provider: "pg",
     usePlural: true,
   }),
-  secret: process.env.BETTER_AUTH_SECRET,
+  secret: BETTER_AUTH_SECRET,
   user: {
     deleteUser: {
       enabled: true,
@@ -18,11 +21,11 @@ export const auth = betterAuth({
   },
   socialProviders: {
     google: {
-      clientId: process.env.GOOGLE_CLIENT_ID as string,
-      clientSecret: process.env.GOOGLE_CLIENT_SECRET as string,
+      clientId: GOOGLE_CLIENT_ID,
+      clientSecret: GOOGLE_CLIENT_SECRET,
     },
   },
-  baseURL: process.env.NEXT_PUBLIC_BETTER_AUTH_URL,
+  baseURL: NEXT_PUBLIC_BETTER_AUTH_URL,
   appName: "OpenCut",
   trustedOrigins: ["http://localhost:3000"],
 });

packages/db/drizzle.config.ts

@@ -1,17 +1,16 @@
 import type { Config } from "drizzle-kit";
 import * as dotenv from "dotenv";
+import { keys } from "./src/keys";
+
+const { NODE_ENV, DATABASE_URL } = keys();
 
 // Load the right env file based on environment
-if (process.env.NODE_ENV === "production") {
+if (NODE_ENV === "production") {
   dotenv.config({ path: ".env.production" });
 } else {
   dotenv.config({ path: ".env.local" });
 }
 
-if (!process.env.DATABASE_URL) {
-  throw new Error("DATABASE_URL is not set");
-}
-
 export default {
   schema: "./src/schema.ts",
   dialect: "postgresql",
@@ -19,8 +18,8 @@ export default {
     table: "drizzle_migrations",
   },
   dbCredentials: {
-    url: process.env.DATABASE_URL,
+    url: DATABASE_URL,
   },
   out: "./migrations",
-  strict: process.env.NODE_ENV === "production",
-} satisfies Config; 
+  strict: NODE_ENV === "production",
+} satisfies Config;

packages/db/package.json

@@ -7,7 +7,8 @@
   "exports": {
     ".": "./src/index.ts",
     "./schema": "./src/schema.ts",
-    "./drizzle.config": "./drizzle.config.ts"
+    "./drizzle.config": "./drizzle.config.ts",
+    "./keys": "./src/keys.ts"
   },
   "scripts": {
     "db:generate": "drizzle-kit generate",
@@ -16,8 +17,10 @@
     "db:studio": "drizzle-kit studio"
   },
   "dependencies": {
+    "@t3-oss/env-nextjs": "^0.13.8",
     "drizzle-orm": "^0.44.2",
-    "postgres": "^3.4.5"
+    "postgres": "^3.4.5",
+    "zod": "^4.0.5"
   },
   "devDependencies": {
     "drizzle-kit": "^0.31.1",

packages/db/src/index.ts

@@ -1,17 +1,15 @@
 import { drizzle } from "drizzle-orm/postgres-js";
 import postgres from "postgres";
 import * as schema from "./schema";
+import { keys } from "./keys";
 
+const { DATABASE_URL } = keys();
 // Create a lazy database instance that only initializes when accessed
 let _db: ReturnType<typeof drizzle> | null = null;
 
 function getDb() {
-  if (!process.env.DATABASE_URL) {
-    throw new Error("DATABASE_URL is not set");
-  }
-
   if (!_db) {
-    const client = postgres(process.env.DATABASE_URL);
+    const client = postgres(DATABASE_URL);
     _db = drizzle(client, { schema });
   }
 

packages/db/src/keys.ts

@@ -0,0 +1,19 @@
+import { createEnv } from "@t3-oss/env-nextjs";
+import { z } from "zod";
+
+export const keys = () =>
+  createEnv({
+    server: {
+      NODE_ENV: z
+        .enum(["development", "production", "test"])
+        .default("development"),
+      DATABASE_URL: z
+        .string()
+        .startsWith("postgres://")
+        .or(z.string().startsWith("postgresql://")),
+    },
+    runtimeEnv: {
+      NODE_ENV: process.env.NODE_ENV,
+      DATABASE_URL: process.env.DATABASE_URL,
+    },
+  });