Improve production environment diagnostics and error handling

Add diagnostic scripts and enhance server configuration to better identify and resolve production issues, including 502 errors and static file serving problems.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 54292eb6-296c-47a3-8f4e-c9967863556c
Replit-Commit-Checkpoint-Type: full_checkpoint

debug-production.js

@@ -0,0 +1,59 @@
+#!/usr/bin/env node
+
+// Script de diagnostic pour la production LogiFlow
+// Usage: node debug-production.js [URL_BASE]
+
+const url = process.argv[2] || 'https://logiflow.ffnancy.fr';
+
+const runDiagnostics = async () => {
+  console.log(`🔍 Diagnostic de production pour ${url}\n`);
+  
+  const endpoints = [
+    { path: '/api/health', desc: 'Health Check' },
+    { path: '/api/user', desc: 'API User (attendu: 401)' },
+    { path: '/api/default-credentials-check', desc: 'Credentials Check' },
+    { path: '/', desc: 'Page principale' },
+    { path: '/sav', desc: 'Page SAV' }
+  ];
+
+  for (const endpoint of endpoints) {
+    try {
+      console.log(`📡 Test ${endpoint.desc}: ${url}${endpoint.path}`);
+      
+      const response = await fetch(`${url}${endpoint.path}`, {
+        method: 'GET',
+        headers: {
+          'User-Agent': 'LogiFlow-Debug/1.0'
+        }
+      });
+      
+      console.log(`   Status: ${response.status} ${response.statusText}`);
+      
+      if (endpoint.path === '/api/health' && response.ok) {
+        const data = await response.json();
+        console.log(`   Détails:`, data);
+      }
+      
+      if (response.status === 502) {
+        console.log(`   ❌ Erreur 502: Service indisponible ou problème de proxy`);
+      } else if (response.ok || response.status === 401) {
+        console.log(`   ✅ Service répond correctement`);
+      } else {
+        console.log(`   ⚠️  Status inattendu`);
+      }
+      
+    } catch (error) {
+      console.log(`   ❌ Erreur de connexion: ${error.message}`);
+    }
+    
+    console.log('');
+  }
+  
+  console.log('🔧 Actions recommandées:');
+  console.log('1. Vérifier les logs Docker: docker-compose logs logiflow');
+  console.log('2. Vérifier le status: docker-compose ps');
+  console.log('3. Redémarrer si nécessaire: docker-compose restart logiflow');
+  console.log('4. Forcer rebuild: docker-compose up --build -d');
+};
+
+runDiagnostics().catch(console.error);