feat: implement Redis session management and user authentication flow

app/gateway-api/src/server.ts

@@ -0,0 +1,65 @@
+import fastify from 'fastify';
+import cors from '@fastify/cors';
+import { fastifyTRPCPlugin } from '@trpc/server/adapters/fastify';
+import { createRedisConnector, resolveRedisConfigFromEnv } from '@sammo-ts/infra';
+
+import { resolveGatewayApiConfigFromEnv } from './config.js';
+import { createGatewayApiContext } from './context.js';
+import { createInMemoryUserRepository } from './auth/inMemoryUserRepository.js';
+import { RedisGatewaySessionService } from './auth/redisSessionService.js';
+import { appRouter } from './router.js';
+
+export const createGatewayApiServer = async () => {
+    const config = resolveGatewayApiConfigFromEnv();
+    const redis = createRedisConnector(resolveRedisConfigFromEnv());
+    await redis.connect();
+
+    const users = createInMemoryUserRepository();
+    const sessions = new RedisGatewaySessionService(redis.client, {
+        keyPrefix: config.redisKeyPrefix,
+        sessionTtlSeconds: config.sessionTtlSeconds,
+        gameSessionTtlSeconds: config.gameSessionTtlSeconds,
+    });
+
+    const app = fastify({
+        logger: true,
+    });
+
+    await app.register(cors, {
+        origin: true,
+        credentials: true,
+    });
+
+    await app.register(fastifyTRPCPlugin, {
+        prefix: config.trpcPath,
+        trpcOptions: {
+            router: appRouter,
+            createContext: () =>
+                createGatewayApiContext({
+                    users,
+                    sessions,
+                }),
+        },
+    });
+
+    app.get('/healthz', async () => ({
+        ok: true,
+    }));
+
+    app.addHook('onClose', async () => {
+        await redis.disconnect();
+    });
+
+    return {
+        app,
+        config,
+    };
+};
+
+export const runGatewayApiServer = async (): Promise<void> => {
+    const { app, config } = await createGatewayApiServer();
+    await app.listen({
+        host: config.host,
+        port: config.port,
+    });
+};