feat: auth

api/src/app/plugins/auth.ts

@@ -0,0 +1,54 @@
+import { FastifyPluginAsync, FastifyRequest } from "fastify";
+import fastifyPlugin from "fastify-plugin";
+import fastifyJwt from "@fastify/jwt";
+import fastifyCookie from "@fastify/cookie";
+import fastifyOauth2 from "@fastify/oauth2";
+
+declare module "fastify" {
+  interface FastifyInstance {
+    authenticate: (request: FastifyRequest) => Promise<void>;
+    oauth2Discord: any;
+  }
+  interface FastifyRequest {
+    user?: any;
+  }
+}
+
+const authPlugin: FastifyPluginAsync = async (app) => {
+  // Register JWT plugin
+  app.register(fastifyJwt, {
+    secret: process.env.JWT_SECRET || "your-secret-key",
+    cookie: {
+      cookieName: "auth-token",
+      signed: false,
+    },
+  });
+
+  // Register cookie plugin
+  app.register(fastifyCookie);
+
+  // Register Discord OAuth2
+  app.register(fastifyOauth2, {
+    name: "oauth2Discord",
+    credentials: {
+      client: {
+        id: process.env.DISCORD_CLIENT_ID || "",
+        secret: process.env.DISCORD_CLIENT_SECRET || "",
+      },
+      auth: fastifyOauth2.DISCORD_CONFIGURATION,
+    },
+    startRedirectPath: "/api/auth/login",
+    callbackUri: `${process.env.API_URL || "http://localhost:3000"}/api/auth/callback`,
+  });
+
+  // Authentication decorator
+  app.decorate("authenticate", async (request: FastifyRequest) => {
+    try {
+      await request.jwtVerify();
+    } catch (err) {
+      throw app.httpErrors.unauthorized("Invalid token");
+    }
+  });
+};
+
+export default fastifyPlugin(authPlugin);