{
  "name": "GMB 02 — Send Review Email",
  "nodes": [
    {
      "parameters": {},
      "id": "trigger",
      "name": "When called by API Gateway",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "typeVersion": 1,
      "position": [0, 0]
    },
    {
      "parameters": {
        "jsCode": "const seconds = Math.max(0, Number($json._send_delay_seconds) || 0);\nif (seconds > 0) {\n  await new Promise((resolve) => setTimeout(resolve, seconds * 1000));\n}\nreturn [{ json: $json }];"
      },
      "id": "rate-limit-wait",
      "name": "Rate Limit Wait",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [220, 0]
    },
    {
      "parameters": {
        "resource": "message",
        "operation": "send",
        "sendTo": "={{ $json.to }}",
        "subject": "={{ $json.subject }}",
        "emailType": "html",
        "message": "={{ $json.body }}",
        "options": { "appendAttribution": false }
      },
      "id": "gmail-send",
      "name": "Send Gmail",
      "type": "n8n-nodes-base.gmail",
      "typeVersion": 2.1,
      "position": [440, 0],
      "onError": "continueErrorOutput"
    },
    {
      "parameters": {
        "jsCode": "const trigger = $('When called by API Gateway').first().json;\nreturn [{\n  json: {\n    action: 'lead.email_result',\n    lead_id: trigger.lead_id,\n    business_id: trigger.business_id,\n    success: true\n  }\n}];"
      },
      "id": "build-success",
      "name": "Build Success Callback",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [680, -80]
    },
    {
      "parameters": {
        "jsCode": "const trigger = $('When called by API Gateway').first().json;\nconst errItem = $input.first().json;\nconst err = errItem.error;\nconst errMsg = typeof err === 'string'\n  ? err\n  : (err?.message || err?.description || errItem.message || 'Gmail send failed');\nreturn [{\n  json: {\n    action: 'lead.email_result',\n    lead_id: trigger.lead_id,\n    business_id: trigger.business_id,\n    success: false,\n    error: errMsg\n  }\n}];"
      },
      "id": "build-failed",
      "name": "Build Failed Callback",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [680, 120]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "={{ $env.N8N_WEBHOOK_URL || 'https://your-n8n.example.com/webhook/gmb-api' }}",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            { "name": "Content-Type", "value": "application/json" },
            { "name": "X-API-Key", "value": "={{ $env.GMB_API_KEY || 'your-gmb-api-key' }}" }
          ]
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify($json) }}",
        "options": {}
      },
      "id": "notify-success",
      "name": "Notify Sent",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [920, -80]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "={{ $env.N8N_WEBHOOK_URL || 'https://your-n8n.example.com/webhook/gmb-api' }}",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            { "name": "Content-Type", "value": "application/json" },
            { "name": "X-API-Key", "value": "={{ $env.GMB_API_KEY || 'your-gmb-api-key' }}" }
          ]
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify($json) }}",
        "options": {}
      },
      "id": "notify-failed",
      "name": "Notify Failed",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [920, 120]
    }
  ],
  "connections": {
    "When called by API Gateway": {
      "main": [[{ "node": "Rate Limit Wait", "type": "main", "index": 0 }]]
    },
    "Rate Limit Wait": {
      "main": [[{ "node": "Send Gmail", "type": "main", "index": 0 }]]
    },
    "Send Gmail": {
      "main": [
        [{ "node": "Build Success Callback", "type": "main", "index": 0 }],
        [{ "node": "Build Failed Callback", "type": "main", "index": 0 }]
      ]
    },
    "Build Success Callback": {
      "main": [[{ "node": "Notify Sent", "type": "main", "index": 0 }]]
    },
    "Build Failed Callback": {
      "main": [[{ "node": "Notify Failed", "type": "main", "index": 0 }]]
    }
  },
  "settings": { "executionOrder": "v1" }
}