Set up initial project and files

src/index.ts

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+import { Hono } from 'hono';
+import { handle as handleInbound } from './routes/inbound';
+import { handle as handleRSS } from './routes/rss';
+import { handle as handleAdmin } from './routes/admin';
+import { Context, Next } from 'hono';
+import { Env } from './types';
+
+// Define allowed origins for CORS
+const ALLOWED_ORIGINS = ['https://getmynews.app', 'https://api.getmynews.app'];
+
+// Create the main Hono app
+const app = new Hono();
+
+// CORS middleware
+app.use('*', async (c, next) => {
+  const origin = c.req.header('Origin');
+  if (origin && ALLOWED_ORIGINS.includes(origin)) {
+    c.header('Access-Control-Allow-Origin', origin);
+    c.header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
+    c.header('Access-Control-Allow-Headers', 'Content-Type, Authorization');
+    c.header('Access-Control-Max-Age', '86400');
+  }
+  
+  // Handle preflight requests
+  if (c.req.method === 'OPTIONS') {
+    return c.text('', 204);
+  }
+  
+  await next();
+});
+
+// Create auth middleware function
+const authMiddleware = async (c: Context, next: Next) => {
+  const authHeader = c.req.header('Authorization');
+  
+  if (!authHeader || !authHeader.startsWith('Basic ')) {
+    c.header('WWW-Authenticate', 'Basic realm="Admin Area"');
+    return c.text('Unauthorized', 401);
+  }
+  
+  const base64Credentials = authHeader.split(' ')[1];
+  const credentials = atob(base64Credentials);
+  const [username, password] = credentials.split(':');
+  
+  // Check against environment variable
+  const env = c.env as unknown as Env;
+  const adminPassword = env.ADMIN_PASSWORD;
+  
+  if (username !== 'admin' || password !== adminPassword) {
+    c.header('WWW-Authenticate', 'Basic realm="Admin Area"');
+    return c.text('Unauthorized', 401);
+  }
+  
+  await next();
+};
+
+// Apply auth middleware to admin routes
+app.use('/admin/*', authMiddleware);
+
+// Also apply auth middleware to root path
+app.use('/', authMiddleware);
+
+// Route handlers
+app.post('/api/inbound', handleInbound);
+app.get('/rss/:feedId', handleRSS);
+app.route('/admin', handleAdmin);
+
+// Root path uses admin handler
+app.route('/', handleAdmin);
+
+// Catch-all for 404s
+app.all('*', (c) => c.text('Not Found', 404));
+
+// Export the worker handler
+export default app;