feat: setup auth lib with better-auth

Author: ifindev

.dev.vars.example

@@ -12,3 +12,7 @@ CLOUDFLARE_API_TOKEN=your-api-token-here
 # Authentication
 BETTER_AUTH_SECRET=your-better-auth-secret # see https://www.better-auth.com/docs/installation
 BETTER_AUTH_URL=http://localhost:3000 # Base URL of your app
+
+# Google Auth : see https://www.better-auth.com/docs/authentication/google
+GOOGLE_CLIENT_ID=your-google-client-id
+GOOGLE_CLIENT_SECRET=your-google-client-secret

src/lib/auth.ts

@@ -0,0 +1,20 @@
+/** biome-ignore-all lint/style/noNonNullAssertion: <we will make sure it's not null> */
+import { betterAuth } from "better-auth";
+import { drizzleAdapter } from "better-auth/adapters/drizzle";
+import { getDb as db } from "./db";
+
+export const auth = betterAuth({
+    database: drizzleAdapter(db, {
+        provider: "sqlite",
+    }),
+    emailAndPassword: {
+        enabled: true,
+    },
+    socialProviders: {
+        google: {
+            enabled: true,
+            clientId: process.env.GOOGLE_CLIENT_ID!,
+            clientSecret: process.env.GOOGLE_CLIENT_SECRET!,
+        },
+    },
+});