Update storage.ts

App.tsx

@@ -1,9 +1,8 @@
-
 import React, { useState, useEffect } from 'react';
 import TemplateList from './components/TemplateList';
 import TemplateEditor from './components/TemplateEditor';
 import { ViewState, EmailTemplate, SQL_SCHEMA } from './types';
-import { getTemplates, deleteTemplate, generateUUID } from './services/storage';
+import { getTemplates, deleteTemplate } from './services/storage';
 import { Database } from 'lucide-react';
 
 const App: React.FC = () => {
@@ -19,14 +18,9 @@ const App: React.FC = () => {
 
   const refreshTemplates = async () => {
     setIsLoading(true);
-    try {
     const data = await getTemplates();
     setTemplates(data);
-    } catch (err) {
-      console.error("Refresh Error:", err);
-    } finally {
     setIsLoading(false);
-    }
   };
 
   const handleCreate = () => {
@@ -40,9 +34,10 @@ const App: React.FC = () => {
   };
 
   const handleClone = (t: EmailTemplate) => {
+    // Create a copy of the template with a new ID and updated name
     const clonedTemplate: EmailTemplate = {
       ...t,
-      id: generateUUID(),
+      id: crypto.randomUUID(), // Generate new ID so it's treated as a new insert
       name: `${t.name} (Copia)`,
       updatedAt: new Date().toISOString()
     };
@@ -69,7 +64,7 @@ const App: React.FC = () => {
         <>
           {isLoading ? (
             <div className="flex h-screen items-center justify-center text-slate-500">
-              Caricamento...
+              Caricamento template...
             </div>
           ) : (
             <TemplateList 
@@ -100,13 +95,17 @@ const App: React.FC = () => {
         />
       )}
 
+      {/* Database Schema Modal (Global Help) */}
       {showSchema && (
         <div className="fixed inset-0 bg-black/60 flex items-center justify-center z-50 p-4">
           <div className="bg-white rounded-xl shadow-2xl max-w-2xl w-full p-6">
             <h2 className="text-xl font-bold mb-4 flex items-center gap-2">
               <Database className="text-brand-600"/> 
-              Configurazione DB
+              Configurazione Database per n8n
             </h2>
+            <p className="text-slate-600 text-sm mb-4">
+              Per far funzionare questa app con il tuo software interno, crea questa tabella nel tuo database MySQL o PostgreSQL.
+            </p>
             <div className="bg-slate-900 text-slate-100 p-4 rounded-lg overflow-x-auto custom-scrollbar mb-4">
               <pre className="text-xs font-mono leading-relaxed">{SQL_SCHEMA}</pre>
             </div>
@@ -114,7 +113,7 @@ const App: React.FC = () => {
               <button 
                 onClick={() => {
                   navigator.clipboard.writeText(SQL_SCHEMA);
-                  alert("Copiato!");
+                  alert("Schema copiato!");
                 }}
                 className="px-4 py-2 bg-slate-100 text-slate-700 font-medium rounded hover:bg-slate-200"
               >

Dockerfile

@@ -3,41 +3,44 @@ FROM node:20-bookworm AS builder
 
 WORKDIR /app
 
-# Copiamo il package.json. Non usiamo npm ci perché richiede obbligatoriamente il package-lock.json
+# Copy ONLY package.json
 COPY package.json ./
 
-# Installiamo tutte le dipendenze necessarie per il build (incluse le devDependencies)
+# Install dependencies
+# --legacy-peer-deps: Ignores peer dependency conflicts
+# --no-audit: Skips vulnerability audit (faster, less noise)
+# --no-fund: Hides funding messages
 RUN npm install --legacy-peer-deps --no-audit --no-fund
 
-# Copiamo il resto del codice sorgente
+# Copy the rest of the application source code
 COPY . .
 
-# Eseguiamo il build del frontend (genera la cartella /dist)
+# Build the frontend assets
 RUN npm run build
 
-# Stage 2: Setup del Server di Produzione
+# Stage 2: Setup the Production Server
 FROM node:20-bookworm-slim
 
 WORKDIR /app
 
-# Copiamo il package.json per installare le dipendenze di runtime
+# Copy ONLY package.json
 COPY package.json ./
 
-# Installiamo SOLO le dipendenze di produzione per mantenere l'immagine leggera
+# Install ONLY production dependencies
 RUN npm install --omit=dev --legacy-peer-deps --no-audit --no-fund
 
-# Copiamo i file compilati (dist) dallo stage builder
+# Copy the built frontend assets from the 'builder' stage
 COPY --from=builder /app/dist ./dist
 
-# Copiamo il file del server Node.js
+# Copy the server entry point
 COPY server.js ./
 
-# Configurazioni di ambiente
+# Set environment variables
 ENV NODE_ENV=production
 ENV PORT=3000
 
-# Esponiamo la porta 3000
+# Expose the port
 EXPOSE 3000
 
-# Avvio dell'applicazione
+# Start the Node.js server
-CMD ["node", "server.js"]
+CMD ["npm", "start"]

README.md

@@ -2,41 +2,19 @@
 <img width="1200" height="475" alt="GHBanner" src="https://github.com/user-attachments/assets/0aa67016-6eaf-458a-adb2-6e31a0763ed6" />
 </div>
 
-# Email Template Builder
+# Run and deploy your AI Studio app
 
-Uno strumento visuale per creare, gestire ed esportare template email HTML con placeholder dinamici.
+This contains everything you need to run your app locally.
+
+View your app in AI Studio: https://ai.studio/apps/drive/1PJrPIeFdvYwt0ImdYe7PMH6YCDGTYQxH
 
 ## Run Locally
 
 **Prerequisites:**  Node.js
 
-1. Install dependencies: `npm install`
+
+1. Install dependencies:
+   `npm install`
 2. Set the `GEMINI_API_KEY` in [.env.local](.env.local) to your Gemini API key
-3. Run the app: `npm run dev`
+3. Run the app:
-
+   `npm run dev`
-## Deploy with Docker
-
-This application can be deployed as a complete stack with its own MySQL database:
-
-1. Set your `GEMINI_API_KEY` in the environment variables
-2. Run `docker-compose up -d` to start the stack
-3. Access the application at `http://localhost:3000`
-
-The stack includes:
-- Frontend/Backend service (Node.js + React)
-- MySQL database (with persistent data)
-- Automatic database initialization
-
-## Deploy on Portainer
-
-To deploy on Portainer as a stack:
-
-1. Create a new stack in Portainer
-2. Copy the contents of [docker-compose.yml](docker-compose.yml) into the editor
-3. Add your `API_KEY` environment variable in the Portainer interface
-4. Deploy the stack
-
-The application will automatically:
-- Create and initialize the MySQL database
-- Start the application service
-- Connect to the internal database

components/TemplateEditor.tsx

@@ -1,7 +1,6 @@
-
 import React, { useState, useEffect, useCallback } from 'react';
 import { EmailTemplate } from '../types';
-import { saveTemplate, generateSQL, generateSelectSQL, getTemplates, generateTemplateKey, generateN8nCode, generateUUID } from '../services/storage';
+import { saveTemplate, generateSQL, generateSelectSQL, getTemplates, generateTemplateKey, generateN8nCode } from '../services/storage';
 import { generateEmailContent } from '../services/geminiService';
 import RichTextEditor from './RichTextEditor';
 import { 
@@ -46,6 +45,7 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
   const [showAiModal, setShowAiModal] = useState(false);
   const [nameError, setNameError] = useState('');
 
+  // Variable detection logic
   const detectVariables = useCallback(() => {
     const regex = /\{\{([\w\d_-]+)\}\}/g;
     const allText = `${subject} ${header} ${body} ${footer}`;
@@ -58,6 +58,7 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
     detectVariables();
   }, [detectVariables]);
 
+  // Clear name error when typing
   useEffect(() => {
     if (nameError) setNameError('');
   }, [name]);
@@ -66,35 +67,30 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
     const newKey = generateTemplateKey(name);
     
     if (!newKey) {
-      setNameError('Il nome del template non può essere vuoto.');
+      setNameError('Il nome del template non può essere vuoto o contenere solo simboli.');
+      alert('Il nome del template non può essere vuoto.');
       return;
     }
 
     setIsSaving(true);
-    console.log("Saving process started for:", name);
-
     try {
-        // 1. Get current templates to check duplicates
+        // Check for duplicates
-        let allTemplates: EmailTemplate[] = [];
+        const allTemplates = await getTemplates();
-        try {
-          allTemplates = await getTemplates();
-        } catch (err) {
-          console.warn("Could not fetch templates for duplicate check, proceeding anyway...", err);
-        }
-
         const isDuplicate = allTemplates.some(t => {
+            // Exclude current template if we are editing
             if (initialTemplate && t.id === initialTemplate.id) return false;
             return generateTemplateKey(t.name) === newKey;
         });
 
         if (isDuplicate) {
             setNameError('Esiste già un template con questo nome.');
+            alert('Un template con questo nome (o ID risultante) esiste già. Per favore scegli un nome univoco.');
             setIsSaving(false);
             return;
         }
 
         const newTemplate: EmailTemplate = {
-            id: initialTemplate?.id || generateUUID(),
+            id: initialTemplate?.id || crypto.randomUUID(),
             name,
             description,
             subject,
@@ -104,14 +100,10 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
             variables: detectedVars,
             updatedAt: new Date().toISOString()
         };
-
-        console.log("Sending POST to server with data:", newTemplate);
         await saveTemplate(newTemplate);
-        console.log("Save successful!");
         onSave();
-    } catch (e: any) {
+    } catch (e) {
-        console.error("SAVE ERROR DETAILS:", e);
+        alert("Impossibile salvare il template. Controlla i log del server.");
-        alert(`Errore di salvataggio: ${e.message}`);
     } finally {
         setIsSaving(false);
     }
@@ -166,6 +158,7 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
     }
   };
 
+  // Maps internal tab keys to Italian display names
   const tabNames: Record<string, string> = {
     header: 'Testata',
     body: 'Corpo',
@@ -174,6 +167,7 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
 
   return (
     <div className="flex flex-col h-screen bg-slate-50">
+      {/* Top Bar */}
       <header className="bg-white border-b border-slate-200 px-6 py-4 flex items-center justify-between sticky top-0 z-20 shrink-0">
         <div className="flex items-center gap-4">
           <button onClick={onBack} className="p-2 hover:bg-slate-100 rounded-full text-slate-500">
@@ -205,8 +199,11 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
       </header>
 
       <div className="flex flex-1 overflow-hidden">
+        {/* Left: Inputs */}
         <div className="w-1/2 flex flex-col border-r border-slate-200 bg-white overflow-y-auto custom-scrollbar">
+          
           <div className="p-6 space-y-6">
+            {/* Metadata */}
             <div className="space-y-4">
               <div>
                 <label className="block text-sm font-semibold text-slate-700 mb-1">Nome Template</label>
@@ -218,7 +215,7 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
                   placeholder="es. Email di Benvenuto"
                 />
                 {nameError && <p className="text-red-500 text-xs mt-1">{nameError}</p>}
-                <p className="text-xs text-slate-400 mt-1">Deve essere univoco. Chiave DB: <span className="font-mono bg-slate-100 px-1">{generateTemplateKey(name) || '...'}</span></p>
+                <p className="text-xs text-slate-400 mt-1">Deve essere univoco. Usato per generare la chiave DB: <span className="font-mono bg-slate-100 px-1">{generateTemplateKey(name) || '...'}</span></p>
               </div>
 
               <div>
@@ -227,7 +224,7 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
                   value={description}
                   onChange={e => setDescription(e.target.value)}
                   className="w-full px-3 py-2 border border-slate-300 rounded-md focus:ring-2 focus:ring-brand-500 focus:border-brand-500 outline-none bg-white resize-none text-sm"
-                  placeholder="Note interne..."
+                  placeholder="Note interne (es. Usato per i nuovi iscritti)"
                   rows={2}
                 />
               </div>
@@ -239,17 +236,19 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
                   value={subject}
                   onChange={e => setSubject(e.target.value)}
                   className="w-full px-3 py-2 border border-slate-300 rounded-md focus:ring-2 focus:ring-brand-500 focus:border-brand-500 outline-none bg-white"
-                  placeholder="Oggetto..."
+                  placeholder="Oggetto... (supporta {{placeholder}})"
                 />
               </div>
             </div>
 
+            {/* Variable Manager */}
             <div className="bg-slate-50 p-4 rounded-lg border border-slate-200">
               <div className="flex items-center justify-between mb-2">
-                <span className="text-xs font-bold text-slate-500 uppercase tracking-wider">Variabili</span>
+                <span className="text-xs font-bold text-slate-500 uppercase tracking-wider">Variabili Attive</span>
+                <span className="text-xs text-slate-400">Rilevate automaticamente dal testo</span>
               </div>
               <div className="flex flex-wrap gap-2">
-                {detectedVars.length === 0 && <span className="text-sm text-slate-400 italic">Nessuna variabile. Usa {'{{nome}}'}.</span>}
+                {detectedVars.length === 0 && <span className="text-sm text-slate-400 italic">Nessuna variabile rilevata. Scrivi {'{{nome}}'} per aggiungerne una.</span>}
                 {detectedVars.map(v => (
                   <span key={v} className="px-2 py-1 bg-brand-100 text-brand-700 text-sm rounded border border-brand-200 font-mono">
                     {`{{${v}}}`}
@@ -258,6 +257,7 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
               </div>
             </div>
 
+            {/* Tabs */}
             <div className="flex border-b border-slate-200">
               {(['header', 'body', 'footer'] as const).map((tab) => (
                 <button
@@ -274,43 +274,59 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
               ))}
             </div>
 
+            {/* Editor Area */}
             <div className="relative">
               <div className="flex justify-between items-center mb-2">
-                <label className="text-sm font-semibold text-slate-700">Editor</label>
+                <label className="text-sm font-semibold text-slate-700">Editor Contenuti</label>
+                <div className="flex gap-2">
                    <button 
                     onClick={() => setShowAiModal(true)}
                     className="text-xs flex items-center gap-1 text-purple-600 hover:text-purple-700 font-medium bg-purple-50 px-2 py-1 rounded"
                   >
                     <Wand2 size={14} />
-                  IA
+                    Genera con IA
                   </button>
                 </div>
+              </div>
               
               <div className="h-[400px]">
                 <RichTextEditor
-                  key={activeTab}
+                  key={activeTab} // Force remount on tab change to sync contentEditable
                   value={getActiveContent()}
                   onChange={setActiveContent}
-                  placeholder={`Scrivi qui...`}
+                  placeholder={`Crea qui la sezione ${tabNames[activeTab]}...`}
                   className="h-full shadow-sm"
                 />
               </div>
+
+              <p className="mt-2 text-xs text-slate-500">
+                Usa il pulsante "Variabile" nella toolbar per inserire placeholder come {'{{nome}}'}.
+              </p>
             </div>
           </div>
         </div>
 
+        {/* Right: Live Preview */}
         <div className="w-1/2 bg-slate-100 flex flex-col overflow-hidden">
-          <div className="p-3 bg-white border-b border-slate-200 flex justify-between items-center shadow-sm shrink-0">
+          <div className="p-3 bg-white border-b border-slate-200 flex justify-between items-center shadow-sm z-10 shrink-0">
             <span className="font-semibold text-slate-600 flex items-center gap-2">
-              <Eye size={18} /> Anteprima
+              <Eye size={18} /> Anteprima Live
             </span>
+            <div className="text-xs text-slate-400">
+              Renderizzato come HTML standard
             </div>
+          </div>
+          {/* Scrollable container: flex-1 ensures it takes available space, overflow-y-auto enables scrolling */}
           <div className="flex-1 p-8 overflow-y-auto custom-scrollbar">
+            {/* mx-auto centers the card without using flexbox on the parent which can cause scroll issues */}
             <div className="w-full max-w-2xl bg-white shadow-xl rounded-lg overflow-hidden min-h-[600px] flex flex-col mx-auto">
+               {/* Simulate Subject Line in Preview */}
                <div className="bg-slate-50 border-b border-slate-100 p-4">
                   <span className="text-xs font-bold text-slate-400 uppercase">Oggetto:</span>
-                  <p className="text-sm font-medium text-slate-800">{subject}</p>
+                  <p className="text-sm font-medium text-slate-800">{subject.replace(/\{\{([\w\d_-]+)\}\}/g, (match, p1) => `<span class="bg-yellow-100 text-yellow-800 px-1 rounded">${match}</span>`)}</p>
                </div>
+               
+               {/* Email Content */}
                <div dangerouslySetInnerHTML={{ __html: header }} />
                <div dangerouslySetInnerHTML={{ __html: body }} className="flex-1" />
                <div dangerouslySetInnerHTML={{ __html: footer }} />
@@ -319,50 +335,122 @@ const Editor: React.FC<Props> = ({ initialTemplate, onBack, onSave }) => {
         </div>
       </div>
 
+      {/* SQL Modal */}
       {showSqlModal && (
         <div className="fixed inset-0 bg-black/50 flex items-center justify-center z-50">
           <div className="bg-white rounded-xl shadow-2xl w-full max-w-4xl p-6 flex flex-col max-h-[90vh]">
              <div className="flex justify-between items-center mb-4">
                 <h3 className="text-lg font-bold text-slate-800 flex items-center gap-2">
                   <Database size={20} className="text-brand-600"/>
-                  Integrazione
+                  Dettagli Integrazione
                 </h3>
-                <button onClick={() => setShowSqlModal(false)} className="text-slate-400 hover:text-slate-600 text-2xl">&times;</button>
+                <button onClick={() => setShowSqlModal(false)} className="text-slate-400 hover:text-slate-600">
+                  <span className="text-2xl">&times;</span>
+                </button>
              </div>
-             <div className="space-y-6 overflow-y-auto">
+             
+             <div className="space-y-8 overflow-y-auto px-1 pb-4">
+                {/* INSERT Section */}
+                <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
                   <div>
-                    <label className="text-xs font-bold text-slate-500 uppercase block mb-1">SQL INSERT/UPDATE</label>
+                    <label className="text-xs font-bold text-slate-500 uppercase tracking-wider mb-2 block">1. Setup (Esegui una volta nel DB)</label>
-                    <pre className="bg-slate-900 text-slate-100 p-4 rounded-lg text-sm font-mono overflow-x-auto">{currentInsertSql}</pre>
+                    <div className="relative">
+                      <pre className="bg-slate-900 text-slate-100 p-4 rounded-lg overflow-x-auto text-sm font-mono custom-scrollbar h-40">
+                        {currentInsertSql}
+                      </pre>
+                      <button 
+                        onClick={() => navigator.clipboard.writeText(currentInsertSql)}
+                        className="absolute top-2 right-2 p-2 bg-slate-700 text-white rounded hover:bg-slate-600"
+                        title="Copia SQL INSERT"
+                      >
+                        <Copy size={16} />
+                      </button>
                     </div>
+                  </div>
+
                   <div>
-                    <label className="text-xs font-bold text-slate-500 uppercase block mb-1">JS n8n</label>
+                     <label className="text-xs font-bold text-slate-500 uppercase tracking-wider mb-2 block">2. Recupero (Nodo SQL n8n)</label>
-                    <pre className="bg-slate-50 border border-slate-200 p-4 rounded-lg text-sm font-mono overflow-x-auto">{currentN8nCode}</pre>
+                     <div className="relative">
+                      <pre className="bg-slate-800 text-slate-50 p-4 rounded-lg overflow-x-auto text-sm font-mono custom-scrollbar h-40">
+                        {currentSelectSql}
+                      </pre>
+                      <button 
+                        onClick={() => navigator.clipboard.writeText(currentSelectSql)}
+                        className="absolute top-2 right-2 p-2 bg-slate-600 text-white rounded hover:bg-slate-500"
+                        title="Copia SQL SELECT"
+                      >
+                        <Copy size={16} />
+                      </button>
+                    </div>
+                  </div>
+                </div>
+
+                {/* n8n Code Section */}
+                <div>
+                   <label className="text-xs font-bold text-purple-600 uppercase tracking-wider mb-2 flex items-center gap-2">
+                     <Code size={16} />
+                     3. Popolamento (Nodo Codice n8n)
+                   </label>
+                   <div className="relative">
+                    <pre className="bg-slate-50 border border-slate-200 text-slate-700 p-4 rounded-lg overflow-x-auto text-sm font-mono custom-scrollbar max-h-60">
+                      {currentN8nCode}
+                    </pre>
+                    <button 
+                      onClick={() => navigator.clipboard.writeText(currentN8nCode)}
+                      className="absolute top-2 right-2 p-2 bg-white border border-slate-200 text-slate-600 rounded hover:bg-slate-50 shadow-sm"
+                      title="Copia Codice JS"
+                    >
+                      <Copy size={16} />
+                    </button>
+                  </div>
+                   <p className="text-xs text-slate-500 mt-2">
+                     Incolla questo codice in un <strong>Nodo Code</strong> collegato dopo il tuo nodo SQL. Sostituisci <code>REPLACE_WITH_VALUE</code> con le variabili reali (es. <code>$('NodeName').item.json.name</code>).
+                   </p>
                 </div>
              </div>
           </div>
         </div>
       )}
 
+      {/* AI Modal */}
       {showAiModal && (
         <div className="fixed inset-0 bg-black/50 flex items-center justify-center z-50">
           <div className="bg-white rounded-xl shadow-2xl w-full max-w-lg p-6">
-             <h3 className="text-lg font-bold text-slate-800 mb-2">Generatore IA</h3>
+             <h3 className="text-lg font-bold text-slate-800 mb-2 flex items-center gap-2">
+               <Wand2 className="text-purple-600"/>
+               Generatore Contenuti IA
+             </h3>
+             <p className="text-sm text-slate-600 mb-4">
+               Descrivi cosa vuoi per la sezione <strong>{tabNames[activeTab]}</strong>. 
+               L'IA genererà il codice HTML con i placeholder necessari.
+             </p>
              <textarea 
                className="w-full h-32 border border-slate-300 rounded p-3 text-sm focus:ring-2 focus:ring-purple-500 outline-none mb-4"
-               placeholder="Descrivi cosa generare..."
+               placeholder="es. Scrivi una notifica gentile che avvisi l'utente del cambio password avvenuto con successo. Includi un placeholder per il nome utente."
                value={aiPrompt}
                onChange={(e) => setAiPrompt(e.target.value)}
              />
              <div className="flex justify-end gap-3">
-               <button onClick={() => setShowAiModal(false)} className="px-4 py-2 text-slate-600">Annulla</button>
+               <button 
+                 onClick={() => setShowAiModal(false)}
+                 className="px-4 py-2 text-slate-600 hover:bg-slate-100 rounded"
+               >
+                 Annulla
+               </button>
                <button 
                  onClick={handleAiGenerate}
                  disabled={isGenerating || !aiPrompt}
-                 className="px-4 py-2 bg-purple-600 text-white rounded hover:bg-purple-700 flex items-center gap-2"
+                 className={`px-4 py-2 bg-purple-600 text-white rounded hover:bg-purple-700 flex items-center gap-2 ${isGenerating ? 'opacity-70' : ''}`}
                >
                  {isGenerating ? 'Generazione...' : 'Genera HTML'}
+                 {!isGenerating && <Wand2 size={16} />}
                </button>
              </div>
+             {!process.env.API_KEY && (
+               <p className="mt-3 text-xs text-red-500">
+                 Nota: API_KEY non rilevata nell'ambiente. Questa funzione richiede una chiave API Gemini.
+               </p>
+             )}
           </div>
         </div>
       )}

docker-compose.yml

@@ -1,41 +1,20 @@
 version: '3.8'
 
 services:
-  db:
-    image: mysql:8.0
-    container_name: email_templates_db
-    environment:
-      MYSQL_ROOT_PASSWORD: rootpassword
-      MYSQL_DATABASE: email_templates
-      MYSQL_USER: appuser
-      MYSQL_PASSWORD: apppassword
-    ports:
-      - "3306:3306"
-    volumes:
-      - db_data:/var/lib/mysql
-    restart: unless-stopped
-    healthcheck:
-      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
-      timeout: 20s
-      retries: 10
-
   app:
     build: .
-    container_name: email_templates_app
     ports:
       - "3000:3000"
     environment:
-      DB_HOST: db
+      # Database Connection Configuration
-      DB_USER: appuser
+      # We removed the ':-default' syntax. 
-      DB_PASSWORD: apppassword
+      # Now, the container will strictly use what is provided by the host environment.
-      DB_NAME: email_templates
+      - DB_TYPE=${DB_TYPE}
-      DB_PORT: 3306
+      - DB_HOST=${DB_HOST}
-      DB_TYPE: mysql
+      - DB_PORT=${DB_PORT}
-      API_KEY: ${API_KEY}
+      - DB_USER=${DB_USER}
-    depends_on:
+      - DB_PASSWORD=${DB_PASSWORD}
-      db:
+      - DB_NAME=${DB_NAME}
-        condition: service_healthy
-    restart: unless-stopped
       
-volumes:
+      # Application Keys
-  db_data:
+      - API_KEY=${API_KEY}

server.js

@@ -1,4 +1,3 @@
-
 import express from 'express';
 import path from 'path';
 import { fileURLToPath } from 'url';
@@ -15,27 +14,12 @@ const __dirname = path.dirname(__filename);
 const app = express();
 const PORT = process.env.PORT || 3000;
 
-// 1. CORS deve essere la prima cosa per gestire le richieste OPTIONS dei browser
 app.use(cors());
-app.options('*', cors()); 
+app.use(express.json());
-
-// 2. Logging immediato di ogni richiesta
-app.use((req, res, next) => {
-  const start = Date.now();
-  res.on('finish', () => {
-    const duration = Date.now() - start;
-    console.log(`[${new Date().toISOString()}] ${req.method} ${req.url} - Status: ${res.statusCode} (${duration}ms)`);
-  });
-  next();
-});
-
-// 3. Parser JSON con limite aumentato (fondamentale per template HTML grandi)
-app.use(express.json({ limit: '10mb' }));
-app.use(express.urlencoded({ limit: '10mb', extended: true }));
-
-// 4. File statici
 app.use(express.static(path.join(__dirname, 'dist')));
 
+// DB Configuration
+// Normalize DB_TYPE: allow 'postgres', 'postgresql', 'Postgres', etc.
 const rawDbType = (process.env.DB_TYPE || 'mysql').toLowerCase().trim();
 const DB_TYPE = (rawDbType === 'postgres' || rawDbType === 'postgresql') ? 'postgres' : 'mysql';
 
@@ -47,48 +31,83 @@ const dbConfig = {
   port: process.env.DB_PORT || (DB_TYPE === 'postgres' ? 5432 : 3306),
 };
 
-console.log('--- App Version: 1.0.2 ---');
+// Debug Log: Print config to console (masking password)
-console.log(`DB Type: ${DB_TYPE}`);
+console.log('--- Database Configuration ---');
-console.log(`DB Host: ${dbConfig.host}`);
+console.log(`Type: ${DB_TYPE} (Input: ${process.env.DB_TYPE || 'default'})`);
+console.log(`Host: ${dbConfig.host}`);
+console.log(`User: ${dbConfig.user}`);
+console.log(`Database: ${dbConfig.database}`);
+console.log(`Port: ${dbConfig.port}`);
+console.log(`Password: ${dbConfig.password ? '******' : '(Not Set)'}`);
+console.log('------------------------------');
 
 let pool;
 
-const initDB = async (retries = 5) => {
+// Initialize DB Connection
-  while (retries > 0) {
+const initDB = async () => {
   try {
     if (!dbConfig.host || !dbConfig.user || !dbConfig.database) {
-         throw new Error("Missing required database environment variables (DB_HOST, DB_USER, DB_NAME).");
+       throw new Error("Missing required database environment variables (DB_HOST, DB_USER, or DB_NAME).");
     }
 
     if (DB_TYPE === 'postgres') {
       const { Pool } = pg;
       pool = new Pool(dbConfig);
-        await pool.query('SELECT 1'); // Test connection
+      
+      // Create table for Postgres
+      // Using JSONB for variables
+      await pool.query(`
+        CREATE TABLE IF NOT EXISTS email_templates (
+          id VARCHAR(255) PRIMARY KEY,
+          template_key VARCHAR(255) UNIQUE NOT NULL,
+          name VARCHAR(255) NOT NULL,
+          description TEXT,
+          subject VARCHAR(255),
+          header_html TEXT,
+          body_html TEXT,
+          footer_html TEXT,
+          full_html TEXT,
+          required_variables JSONB,
+          created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+          updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        );
+      `);
     } else {
+      // MySQL
       pool = mysql.createPool(dbConfig);
-        await pool.query('SELECT 1'); // Test connection
+      
+      // Create table for MySQL
+      await pool.query(`
+        CREATE TABLE IF NOT EXISTS email_templates (
+          id VARCHAR(255) PRIMARY KEY,
+          template_key VARCHAR(255) UNIQUE NOT NULL,
+          name VARCHAR(255) NOT NULL,
+          description TEXT,
+          subject VARCHAR(255),
+          header_html TEXT,
+          body_html TEXT,
+          footer_html TEXT,
+          full_html TEXT,
+          required_variables JSON,
+          created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+          updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+        );
+      `);
     }
     console.log(`Connected to ${DB_TYPE} database successfully.`);
-      return;
   } catch (err) {
-      retries -= 1;
+    console.error('Database connection failed:', err);
-      console.error(`Database connection failed (${retries} retries left):`, err.message);
+    process.exit(1);
-      if (retries === 0) {
-        console.error("FATAL: Could not connect to database.");
-        // Non usciamo per permettere al server di servire i file statici e mostrare errori via API
-      } else {
-        await new Promise(resolve => setTimeout(resolve, 5000));
-      }
-    }
   }
 };
 
 initDB();
 
+// API Routes
+
+// GET All Templates
 app.get('/api/templates', async (req, res) => {
   try {
-    if (!pool) return res.status(503).json({ error: "Database not connected" });
-    
     let rows;
     if (DB_TYPE === 'postgres') {
       const result = await pool.query('SELECT * FROM email_templates ORDER BY updated_at DESC');
@@ -98,6 +117,7 @@ app.get('/api/templates', async (req, res) => {
       rows = result;
     }
     
+    // Map DB fields back to frontend types
     const templates = rows.map(row => ({
       id: row.id,
       name: row.name,
@@ -106,24 +126,21 @@ app.get('/api/templates', async (req, res) => {
       header: row.header_html,
       body: row.body_html,
       footer: row.footer_html,
-      variables: typeof row.required_variables === 'string' ? JSON.parse(row.required_variables) : (row.required_variables || []),
+      variables: typeof row.required_variables === 'string' ? JSON.parse(row.required_variables) : row.required_variables,
       updatedAt: row.updated_at
     }));
 
     res.json(templates);
   } catch (err) {
-    console.error("Fetch Error:", err);
+    console.error(err);
-    res.status(500).json({ error: 'Failed to fetch templates', details: err.message });
+    res.status(500).json({ error: 'Failed to fetch templates' });
   }
 });
 
+// SAVE (Upsert) Template
 app.post('/api/templates', async (req, res) => {
   const t = req.body;
-  
+  // Ensure default values to prevent undefined errors in Postgres
-  if (!t.name || !t.id) {
-    return res.status(400).json({ error: "Name and ID are required" });
-  }
-
   const header = t.header || '';
   const body = t.body || '';
   const footer = t.footer || '';
@@ -145,9 +162,8 @@ app.post('/api/templates', async (req, res) => {
   ];
 
   try {
-    if (!pool) throw new Error("Database not connected");
-
     if (DB_TYPE === 'postgres') {
+      // Postgres requires explicit casting for JSONB parameters when passed as strings ($10::jsonb)
       const query = `
         INSERT INTO email_templates (id, template_key, name, description, subject, header_html, body_html, footer_html, full_html, required_variables, updated_at)
         VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10::jsonb, NOW())
@@ -166,8 +182,8 @@ app.post('/api/templates', async (req, res) => {
       await pool.query(query, params);
     } else {
       const query = `
-        INSERT INTO email_templates (id, template_key, name, description, subject, header_html, body_html, footer_html, full_html, required_variables)
+        INSERT INTO email_templates (id, template_key, name, description, subject, header_html, body_html, footer_html, full_html, required_variables, updated_at)
-        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, NOW())
         ON DUPLICATE KEY UPDATE
           template_key = VALUES(template_key),
           name = VALUES(name),
@@ -177,20 +193,22 @@ app.post('/api/templates', async (req, res) => {
           body_html = VALUES(body_html),
           footer_html = VALUES(footer_html),
           full_html = VALUES(full_html),
-          required_variables = VALUES(required_variables);
+          required_variables = VALUES(required_variables),
+          updated_at = NOW();
       `;
       await pool.query(query, params);
     }
     res.json({ success: true });
   } catch (err) {
-    console.error("DB Save Error:", err.message);
+    console.error("Save Template Error:", err);
-    res.status(500).json({ error: 'Database save failed', details: err.message });
+    // Return specific error details to help debugging on the client
+    res.status(500).json({ error: 'Failed to save template', details: err.message });
   }
 });
 
+// DELETE Template
 app.delete('/api/templates/:id', async (req, res) => {
   try {
-    if (!pool) return res.status(503).json({ error: "Database not connected" });
     if (DB_TYPE === 'postgres') {
       await pool.query('DELETE FROM email_templates WHERE id = $1', [req.params.id]);
     } else {
@@ -198,15 +216,16 @@ app.delete('/api/templates/:id', async (req, res) => {
     }
     res.json({ success: true });
   } catch (err) {
-    console.error("Delete Error:", err);
+    console.error(err);
     res.status(500).json({ error: 'Failed to delete template' });
   }
 });
 
+// Handle React Routing
 app.get('*', (req, res) => {
   res.sendFile(path.join(__dirname, 'dist', 'index.html'));
 });
 
-app.listen(PORT, '0.0.0.0', () => {
+app.listen(PORT, () => {
   console.log(`Server running on port ${PORT}`);
 });

services/storage.ts

@@ -1,22 +1,7 @@
 
 import { EmailTemplate } from '../types';
 
-// Fallback for crypto.randomUUID in non-secure (HTTP) contexts
+// Helper functions remain synchronous as they are utility functions
-export const generateUUID = () => {
-  if (typeof crypto !== 'undefined' && crypto.randomUUID) {
-    try {
-      return crypto.randomUUID();
-    } catch (e) {
-      // Fallback if it exists but fails
-    }
-  }
-  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
-    const r = Math.random() * 16 | 0;
-    const v = c === 'x' ? r : (r & 0x3 | 0x8);
-    return v.toString(16);
-  });
-};
-
 export const generateTemplateKey = (name: string): string => {
   return name.trim().toLowerCase().replace(/\s+/g, '_').replace(/[^a-z0-9_]/g, '');
 };
@@ -29,15 +14,10 @@ export const generateSQL = (template: EmailTemplate): string => {
   const subject = template.subject.replace(/'/g, "''");
   const vars = JSON.stringify(template.variables).replace(/'/g, "''");
   const key = generateTemplateKey(template.name);
-  const name = template.name.replace(/'/g, "''");
-  const desc = (template.description || '').replace(/'/g, "''");
 
   return `INSERT INTO email_templates (id, template_key, name, description, subject, header_html, body_html, footer_html, full_html, required_variables)
-VALUES ('${template.id}', '${key}', '${name}', '${desc}', '${subject}', '${header}', '${body}', '${footer}', '${fullHtml}', '${vars}')
+VALUES ('${template.id}', '${key}', '${template.name.replace(/'/g, "''")}', '${template.description?.replace(/'/g, "''") || ''}', '${subject}', '${header}', '${body}', '${footer}', '${fullHtml}', '${vars}')
 ON DUPLICATE KEY UPDATE 
-    template_key = VALUES(template_key),
-    name = VALUES(name),
-    description = VALUES(description),
     subject = VALUES(subject),
     header_html = VALUES(header_html),
     body_html = VALUES(body_html),
@@ -56,18 +36,24 @@ export const generateN8nCode = (template: EmailTemplate): string => {
   const hasVars = template.variables.length > 0;
 
   return `// Nodo Code n8n - Popolatore Template
+// 1. Assicurati che il nodo precedente (SQL) restituisca 'full_html' e 'subject'.
+// 2. Aggiusta il percorso (item.json.full_html) se l'output del tuo nodo SQL è diverso.
+
 for (const item of items) {
   const templateHtml = item.json.full_html;
   const templateSubject = item.json.subject;
 
+  // Definisci qui i tuoi dati dinamici
   const replacements = {
-${hasVars ? varsMap : '  // Nessuna variabile rilevata'}
+${hasVars ? varsMap : '  // Nessuna variabile rilevata in questo template'}
   };
 
   let finalHtml = templateHtml;
   let finalSubject = templateSubject;
   
+  // Esegui sostituzione
   for (const [key, value] of Object.entries(replacements)) {
+    // Sostituisce {{key}} globalmente nell'HTML e nell'Oggetto
     const regex = new RegExp('{{' + key + '}}', 'g');
     finalHtml = finalHtml.replace(regex, value);
     if (finalSubject) {
@@ -75,24 +61,28 @@ ${hasVars ? varsMap : '  // Nessuna variabile rilevata'}
     }
   }
 
+  // Output del contenuto processato
   item.json.processed_html = finalHtml;
   item.json.processed_subject = finalSubject;
 }
+
 return items;`;
 };
 
+// Async API calls to replace synchronous localStorage
 export const getTemplates = async (): Promise<EmailTemplate[]> => {
-  console.log("Fetching templates from /api/templates...");
+  try {
     const response = await fetch('/api/templates');
-  if (!response.ok) {
+    if (!response.ok) throw new Error('Fallito il recupero');
-    const errorBody = await response.text();
-    throw new Error(`Errore API (${response.status}): ${errorBody || response.statusText}`);
-  }
     return await response.json();
+  } catch (e) {
+    console.error("Fallito il caricamento dei template", e);
+    return [];
+  }
 };
 
 export const saveTemplate = async (template: EmailTemplate): Promise<void> => {
-  console.log("Saving template to /api/templates...", template.name);
+  try {
     const response = await fetch('/api/templates', {
       method: 'POST',
       headers: {
@@ -102,21 +92,23 @@ export const saveTemplate = async (template: EmailTemplate): Promise<void> => {
     });
     
     if (!response.ok) {
-    let errorMessage = `Errore HTTP ${response.status}`;
+      const error = await response.json();
-    try {
+      throw new Error(error.message || 'Salvataggio fallito');
-        const errorData = await response.json();
-        errorMessage = errorData.details || errorData.error || errorMessage;
-    } catch (e) {
-        const textError = await response.text();
-        if (textError) errorMessage = textError;
     }
-    throw new Error(errorMessage);
+  } catch (e) {
+    console.error("Fallito il salvataggio del template", e);
+    throw e;
   }
 };
 
 export const deleteTemplate = async (id: string): Promise<void> => {
+  try {
     const response = await fetch(`/api/templates/${id}`, {
       method: 'DELETE',
     });
     if (!response.ok) throw new Error('Eliminazione fallita');
+  } catch (e) {
+    console.error("Fallita l'eliminazione del template", e);
+    throw e;
+  }
 };

types.ts

@@ -18,37 +18,18 @@ export interface ToastMessage {
   text: string;
 }
 
-// Uniform schema for both Postgres and MySQL, showing the VARCHAR id needed for UUIDs
+// Simple schema for n8n SQL generation
 export const SQL_SCHEMA = `
--- Per MySQL
 CREATE TABLE IF NOT EXISTS email_templates (
-    id VARCHAR(255) PRIMARY KEY,
+    id INT AUTO_INCREMENT PRIMARY KEY,
     template_key VARCHAR(255) UNIQUE NOT NULL,
-    name VARCHAR(255) NOT NULL,
-    description TEXT,
     subject VARCHAR(255),
-    header_html MEDIUMTEXT,
+    header_html TEXT,
-    body_html MEDIUMTEXT,
+    body_html TEXT,
-    footer_html MEDIUMTEXT,
+    footer_html TEXT,
-    full_html MEDIUMTEXT,
+    full_html TEXT,
     required_variables JSON,
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
 );
-
--- Per PostgreSQL
--- CREATE TABLE IF NOT EXISTS email_templates (
---     id VARCHAR(255) PRIMARY KEY,
---     template_key VARCHAR(255) UNIQUE NOT NULL,
---     name VARCHAR(255) NOT NULL,
---     description TEXT,
---     subject VARCHAR(255),
---     header_html TEXT,
---     body_html TEXT,
---     footer_html TEXT,
---     full_html TEXT,
---     required_variables JSONB,
---     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
---     updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
--- );
 `;