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proxy-server/server.js

@@ -0,0 +1,174 @@
+/**
+ * Lokaler Reverse Proxy für PTV Geocoding API
+ * Umgeht CORS-Probleme bei der Entwicklung
+ */
+
+const http = require('http');
+const https = require('https');
+const url = require('url');
+
+const PORT = 3000;
+const PTV_API_BASE = 'https://api.myptv.com';
+
+// CORS Headers für alle Responses
+const corsHeaders = {
+  'Access-Control-Allow-Origin': '*',
+  'Access-Control-Allow-Methods': 'GET, POST, OPTIONS',
+  'Access-Control-Allow-Headers': 'Content-Type, Authorization',
+  'Content-Type': 'application/json',
+};
+
+const server = http.createServer((req, res) => {
+  console.log(`📨 ${req.method} ${req.url}`);
+
+  // Health check endpoint
+  if (req.url === '/health') {
+    res.writeHead(200, { 'Content-Type': 'text/plain' });
+    res.end('healthy');
+    return;
+  }
+
+  // Handle preflight requests
+  if (req.method === 'OPTIONS') {
+    res.writeHead(200, corsHeaders);
+    res.end();
+    return;
+  }
+
+  // Nur GET Requests erlauben
+  if (req.method !== 'GET') {
+    res.writeHead(405, corsHeaders);
+    res.end(JSON.stringify({ error: 'Method not allowed' }));
+    return;
+  }
+
+  // Parse URL
+  const parsedUrl = url.parse(req.url, true);
+  const { lat, lon, apiKey } = parsedUrl.query;
+
+  // Validierung
+  if (!lat || !lon || !apiKey) {
+    res.writeHead(400, corsHeaders);
+    res.end(JSON.stringify({
+      error: 'Missing parameters: lat, lon, apiKey are required',
+    }));
+    return;
+  }
+
+  // PTV API URL erstellen
+  const ptvUrl = `${PTV_API_BASE}/geocoding/v1/locations/by-position/${lat}/${lon}?language=de&apiKey=${apiKey}`;
+  
+  console.log(`🔄 Weiterleitung an: ${ptvUrl.replace(apiKey, 'API_KEY_HIDDEN')}`);
+
+  // Request an PTV API
+  https.get(ptvUrl, (ptvRes) => {
+    let data = '';
+
+    ptvRes.on('data', (chunk) => {
+      data += chunk;
+    });
+
+    ptvRes.on('end', () => {
+      try {
+        const jsonData = JSON.parse(data);
+        
+        // Erfolgreiche Response
+        if (ptvRes.statusCode === 200) {
+          console.log('✅ PTV API Response erfolgreich');
+          
+          // Adresse extrahieren
+          if (jsonData.locations && jsonData.locations.length > 0) {
+            const location = jsonData.locations[0];
+            if (location.address) {
+              const address = location.address;
+              const street = address.street || '';
+              const houseNumber = address.houseNumber || '';
+              const postalCode = address.postalCode || '';
+              const city = address.city || '';
+              
+              const formattedAddress = `${street} ${houseNumber}, ${postalCode} ${city}`.trim();
+              
+              const response = {
+                success: true,
+                location: formattedAddress,
+                coordinates: {
+                  lat: parseFloat(lat),
+                  lon: parseFloat(lon),
+                },
+                rawData: location,
+              };
+              
+              console.log(`📍 Adresse: ${formattedAddress}`);
+              res.writeHead(200, corsHeaders);
+              res.end(JSON.stringify(response));
+              return;
+            }
+          }
+          
+          // Fallback auf Koordinaten
+          const response = {
+            success: true,
+            location: `Lat: ${parseFloat(lat).toFixed(6)}, Lon: ${parseFloat(lon).toFixed(6)}`,
+            coordinates: {
+              lat: parseFloat(lat),
+              lon: parseFloat(lon),
+            },
+          };
+          
+          res.writeHead(200, corsHeaders);
+          res.end(JSON.stringify(response));
+        } else {
+          // Fehler von PTV API
+          console.log(`❌ PTV API Fehler: ${ptvRes.statusCode}`);
+          res.writeHead(ptvRes.statusCode, corsHeaders);
+          res.end(JSON.stringify({
+            success: false,
+            error: `PTV API Error: ${ptvRes.statusCode}`,
+            fallbackLocation: `Lat: ${parseFloat(lat).toFixed(6)}, Lon: ${parseFloat(lon).toFixed(6)}`,
+          }));
+        }
+      } catch (error) {
+        console.error('❌ JSON Parse Fehler:', error.message);
+        res.writeHead(500, corsHeaders);
+        res.end(JSON.stringify({
+          success: false,
+          error: 'Failed to parse PTV API response',
+          fallbackLocation: `Lat: ${parseFloat(lat).toFixed(6)}, Lon: ${parseFloat(lon).toFixed(6)}`,
+        }));
+      }
+    });
+  }).on('error', (error) => {
+    console.error('❌ Request Fehler:', error.message);
+    res.writeHead(500, corsHeaders);
+    res.end(JSON.stringify({
+      success: false,
+      error: error.message,
+      fallbackLocation: `Lat: ${parseFloat(lat).toFixed(6)}, Lon: ${parseFloat(lon).toFixed(6)}`,
+    }));
+  });
+});
+
+server.listen(PORT, () => {
+  console.log('═══════════════════════════════════════════════════════');
+  console.log('🚀 Lokaler Reverse Proxy Server gestartet!');
+  console.log(`📡 Läuft auf: http://localhost:${PORT}`);
+  console.log('');
+  console.log('📌 Verwendung:');
+  console.log(`   http://localhost:${PORT}/?lat=47.9385&lon=13.7629&apiKey=YOUR_KEY`);
+  console.log('');
+  console.log('⚠️  Hinweis: Nur für Entwicklung verwenden!');
+  console.log('   Für Produktion: Appwrite Function deployen');
+  console.log('═══════════════════════════════════════════════════════');
+  console.log('');
+  console.log('💡 Zum Beenden: Strg+C drücken');
+  console.log('');
+});
+
+// Graceful shutdown
+process.on('SIGINT', () => {
+  console.log('\n\n👋 Server wird beendet...');
+  server.close(() => {
+    console.log('✅ Server erfolgreich gestoppt');
+    process.exit(0);
+  });
+});