Generación y envío automatizados de facturas PDF con Gmail y almacenamiento en Google Drive

• •Punto final de HTTP Webhook (n8n generará automáticamente)
• •Credenciales de API de Google Drive
• •Pueden requerirse credenciales de autenticación para la API de destino

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        "content": "✅ **SUCCESS RESPONSE**\n\n- Confirms invoice generated\n- Returns invoice number & total\n- Email delivery confirmation\n- Google Drive storage status\n- Complete operation summary"
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        "jsCode": "// Process and validate invoice data\nconst data = $input.item.json.body;\n\n// Generate invoice number if not provided\nconst invoiceNumber = data.invoiceNumber || `INV-${new Date().getFullYear()}-${String(Date.now()).slice(-6)}`;\n\n// Process items and calculate totals\nconst items = data.items || [];\nlet subtotal = 0;\n\nconst processedItems = items.map(item => {\n  const qty = parseFloat(item.quantity || item.qty || 1);\n  const price = parseFloat(item.price || 0);\n  const total = qty * price;\n  subtotal += total;\n  \n  return {\n    description: item.description || 'Service',\n    quantity: qty,\n    price: price,\n    total: total.toFixed(2)\n  };\n});\n\n// Calculate tax and total\nconst taxRate = parseFloat(data.taxRate || 0.1);\nconst taxAmount = subtotal * taxRate;\nconst totalAmount = subtotal + taxAmount;\n\n// Format dates\nconst currentDate = new Date().toISOString().split('T')[0];\nconst dueDate = data.dueDate || new Date(Date.now() + 30*24*60*60*1000).toISOString().split('T')[0];\n\nreturn {\n  customerName: data.customerName || 'Customer',\n  customerEmail: data.customerEmail,\n  customerAddress: data.customerAddress || '',\n  invoiceNumber: invoiceNumber,\n  invoiceDate: currentDate,\n  dueDate: dueDate,\n  companyName: data.companyName || $env.COMPANY_NAME || 'Your Company Ltd',\n  companyAddress: data.companyAddress || $env.COMPANY_ADDRESS || '123 Business Street',\n  companyEmail: data.companyEmail || $env.COMPANY_EMAIL || 'billing@company.com',\n  companyPhone: data.companyPhone || $env.COMPANY_PHONE || '+1-555-0123',\n  items: processedItems,\n  subtotal: subtotal.toFixed(2),\n  taxRate: (taxRate * 100).toFixed(1),\n  taxAmount: taxAmount.toFixed(2),\n  totalAmount: totalAmount.toFixed(2),\n  notes: data.notes || 'Thank you for your business!',\n  paymentTerms: data.paymentTerms || 'Payment due within 30 days',\n  timestamp: new Date().toISOString()\n};"
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      "typeVersion": 2
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      "id": "659c77de-7c5c-4a49-9525-07b0106460da",
      "name": "Generar Plantilla HTML",
      "type": "n8n-nodes-base.code",
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        "jsCode": "// Generate HTML for PDF invoice\nconst data = $input.item.json;\n\n// Create items table rows\nconst itemRows = data.items.map(item => `\n  <tr>\n    <td style=\"padding: 8px; border-bottom: 1px solid #eee;\">${item.description}</td>\n    <td style=\"padding: 8px; border-bottom: 1px solid #eee; text-align: center;\">${item.quantity}</td>\n    <td style=\"padding: 8px; border-bottom: 1px solid #eee; text-align: right;\">$${item.price.toFixed(2)}</td>\n    <td style=\"padding: 8px; border-bottom: 1px solid #eee; text-align: right;\">$${item.total}</td>\n  </tr>\n`).join('');\n\nconst htmlContent = `\n<!DOCTYPE html>\n<html>\n<head>\n  <meta charset=\"UTF-8\">\n  <style>\n    body { font-family: Arial, sans-serif; margin: 0; padding: 20px; color: #333; }\n    .header { display: flex; justify-content: space-between; margin-bottom: 30px; border-bottom: 2px solid #007bff; padding-bottom: 20px; }\n    .company-info h1 { color: #007bff; margin: 0; font-size: 28px; }\n    .company-info p { margin: 5px 0; color: #666; }\n    .invoice-info { text-align: right; }\n    .invoice-info h2 { color: #333; margin: 0; font-size: 24px; }\n    .customer-section { margin: 30px 0; }\n    .customer-section h3 { color: #333; margin-bottom: 10px; }\n    .items-table { width: 100%; border-collapse: collapse; margin: 30px 0; }\n    .items-table th { background: #007bff; color: white; padding: 12px 8px; }\n    .totals { margin-top: 20px; }\n    .totals table { margin-left: auto; width: 300px; }\n    .totals td { padding: 5px 10px; }\n    .totals .total-row { font-weight: bold; border-top: 2px solid #333; }\n    .footer { margin-top: 40px; padding-top: 20px; border-top: 1px solid #eee; color: #666; }\n    .payment-terms { background: #f8f9fa; padding: 15px; border-radius: 5px; margin-top: 20px; }\n  </style>\n</head>\n<body>\n  <div class=\"header\">\n    <div class=\"company-info\">\n      <h1>${data.companyName}</h1>\n      <p>${data.companyAddress}</p>\n      <p>Email: ${data.companyEmail}</p>\n      <p>Phone: ${data.companyPhone}</p>\n    </div>\n    <div class=\"invoice-info\">\n      <h2>INVOICE</h2>\n      <p><strong>Invoice #:</strong> ${data.invoiceNumber}</p>\n      <p><strong>Date:</strong> ${data.invoiceDate}</p>\n      <p><strong>Due Date:</strong> ${data.dueDate}</p>\n    </div>\n  </div>\n  \n  <div class=\"customer-section\">\n    <h3>Bill To:</h3>\n    <p><strong>${data.customerName}</strong></p>\n    <p>${data.customerEmail}</p>\n  </div>\n  \n  <table class=\"items-table\">\n    <thead>\n      <tr>\n        <th>Description</th>\n        <th>Quantity</th>\n        <th>Unit Price</th>\n        <th>Total</th>\n      </tr>\n    </thead>\n    <tbody>\n      ${itemRows}\n    </tbody>\n  </table>\n  \n  <div class=\"totals\">\n    <table>\n      <tr>\n        <td>Subtotal:</td>\n        <td style=\"text-align: right;\">$${data.subtotal}</td>\n      </tr>\n      <tr>\n        <td>Tax (${data.taxRate}%):</td>\n        <td style=\"text-align: right;\">$${data.taxAmount}</td>\n      </tr>\n      <tr class=\"total-row\">\n        <td><strong>Total Amount:</strong></td>\n        <td style=\"text-align: right;\"><strong>$${data.totalAmount}</strong></td>\n      </tr>\n    </table>\n  </div>\n  \n  <div class=\"payment-terms\">\n    <h4>Payment Terms:</h4>\n    <p>${data.paymentTerms}</p>\n  </div>\n  \n  <div class=\"footer\">\n    <p>${data.notes}</p>\n    <p><em>Generated automatically on ${new Date().toLocaleDateString()}</em></p>\n  </div>\n</body>\n</html>\n`;\n\nreturn {\n  ...data,\n  htmlContent: htmlContent,\n  filename: `invoice-${data.invoiceNumber}.pdf`\n};"
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        "options": {
          "response": {}
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        "sendBody": true,
        "sendHeaders": true,
        "bodyParameters": {
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        "html": "=Dear {{ $json.customerName }},<br><br>Thank you for your business! Please find your invoice attached.<br><br><strong>Invoice Details:</strong><br>• Invoice Number: {{ $json.invoiceNumber }}<br>• Date: {{ $json.invoiceDate }}<br>• Due Date: {{ $json.dueDate }}<br>• Amount Due: ${{ $json.totalAmount }}<br><br><strong>Payment Terms:</strong><br>{{ $json.paymentTerms }}<br><br>If you have questions, contact us at {{ $json.companyEmail }}<br><br>Best regards,<br>{{ $json.companyName }}",
        "options": {},
        "subject": "Invoice {{ $json.invoiceNumber }} from {{ $json.companyName }}",
        "toEmail": "={{ $json.customerEmail }}",
        "fromEmail": "={{ $env.COMPANY_EMAIL }}",
        "emailFormat": "html"
      },
      "typeVersion": 2
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      "name": "Guardar en Google Drive",
      "type": "n8n-nodes-base.googleDrive",
      "position": [
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      "parameters": {
        "name": "={{ $json.filename }}",
        "driveId": {
          "__rl": true,
          "mode": "list",
          "value": "My Drive"
        },
        "options": {},
        "folderId": {
          "__rl": true,
          "mode": "list",
          "value": "root",
          "cachedResultName": "/ (Root folder)"
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      "name": "Respuesta de Éxito",
      "type": "n8n-nodes-base.code",
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      "parameters": {
        "jsCode": "return {\n  success: true,\n  message: 'Invoice generated and sent successfully',\n  invoiceNumber: $json.invoiceNumber,\n  customerEmail: $json.customerEmail,\n  totalAmount: $json.totalAmount,\n  filename: $json.filename,\n  timestamp: new Date().toISOString(),\n  emailSent: true,\n  savedToDrive: true\n};"
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      "parameters": {
        "options": {
          "responseCode": 200
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        "respondWith": "json",
        "responseBody": "={{ $json }}"
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      "name": "Nota adhesiva1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      "parameters": {
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        "height": 224,
        "content": "☁️ **SAVE TO DRIVE**\n\n- Uploads PDF to Google Drive\n- Organized folder structure\n- Automated file naming\n- Backup for accounting records\n- Secure cloud storage"
      },
      "typeVersion": 1
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      "name": "Nota adhesiva2",
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      "position": [
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      "parameters": {
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        "height": 240,
        "content": "📧 **SENDS TO CUSTOMER**\n\n- Emails PDF invoice to customer\n- Professional email template\n- Includes payment instructions\n- Attachment with generated PDF\n- Confirms delivery status"
      },
      "typeVersion": 1
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      "name": "Nota adhesiva3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      "parameters": {
        "width": 214,
        "height": 256,
        "content": "📄 **INVOICE GENERATION**\n\n- Creates professional HTML template\n- Applies company branding & colors\n- Builds itemized table with pricing\n- Adds payment terms and due dates\n- Includes company contact details"
      },
      "typeVersion": 1
    },
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      "id": "3673840a-5ac8-48ec-af6a-c30db464e73d",
      "name": "Nota adhesiva4",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      ],
      "parameters": {
        "width": 214,
        "height": 256,
        "content": "⚙️ **PREPARING INVOICE**\n\n- Extracts customer data from webhook\n- Validates required fields (email, items)\n- Calculates line totals and subtotals\n- Applies tax rates (default 10%)\n- Formats dates and invoice numbers"
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    }
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