Create service-worker-(old).ts

service-worker-(old).ts

@@ -0,0 +1,89 @@
+// Cloudflare/Deno Worker script to proxy Telegram API requests
+// This script intercepts requests to the Telegram Bot API and forwards them
+// allowing your bot to work even when direct access to api.telegram.org is blocked
+
+export default {
+  async fetch(request, env, ctx) {
+    // Get the original request URL
+    const originalUrl = new URL(request.url);
+    
+    // Handle CORS preflight requests
+    if (request.method === 'OPTIONS') {
+      return new Response(null, {
+        headers: {
+          'Access-Control-Allow-Origin': '*',
+          'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',
+          'Access-Control-Allow-Headers': 'Content-Type, Authorization',
+        },
+      });
+    }
+
+    // Check if this is a request to our worker
+    // If the path starts with /telegram-api, forward to Telegram API
+    if (originalUrl.pathname.startsWith('/telegram-api')) {
+      // Extract the path after /telegram-api
+      // The full path should be like /telegram-api/bot{TOKEN}/{METHOD}
+      const telegramApiPath = originalUrl.pathname.replace('/telegram-api', '');
+      
+      // Construct the target URL for Telegram API
+      // const telegramApiUrl = `https://api.telegram.org${telegramApiPath}`;
+      const telegramApiUrl = `https://api.telegram.org${telegramApiPath}${originalUrl.search}`;
+
+      
+      // Clone the original request to modify it
+      // Remove the Cloudflare-specific headers that might cause issues
+      const newHeaders = new Headers(request.headers);
+      newHeaders.delete('cf-ray');
+      newHeaders.delete('cf-connecting-ip');
+      newHeaders.delete('x-forwarded-for');
+      
+      const modifiedRequest = new Request(telegramApiUrl, {
+        method: request.method,
+        headers: newHeaders,
+        body: request.body,
+        redirect: 'follow'
+      });
+      
+      try {
+        // Send request to Telegram API
+        const response = await fetch(modifiedRequest);
+        
+        // Return the response from Telegram API with CORS headers
+        const modifiedResponse = new Response(response.body, {
+          status: response.status,
+          statusText: response.statusText,
+          headers: {
+            ...response.headers,
+            'Access-Control-Allow-Origin': '*',
+            'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',
+            'Access-Control-Allow-Headers': 'Content-Type, Authorization',
+          }
+        });
+        
+        return modifiedResponse;
+      } catch (error) {
+        console.error('Proxy error:', error);
+        return new Response(JSON.stringify({ 
+          error: 'Proxy error', 
+          details: error.message,
+          message: 'Failed to connect to Telegram API'
+        }), {
+          status: 502, // Bad Gateway
+          headers: { 
+            'Content-Type': 'application/json',
+            'Access-Control-Allow-Origin': '*',
+          }
+        });
+      }
+    }
+    
+    // If not a Telegram API request, return info about the proxy
+    return new Response('Telegram API Proxy Worker - Ready to forward requests to Telegram API', {
+      status: 200,
+      headers: { 
+        'Content-Type': 'text/plain',
+        'Access-Control-Allow-Origin': '*',
+      }
+    });
+  }
+};