{
  "name": "GMB 01 — API Gateway",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "gmb-api",
        "responseMode": "responseNode",
        "options": {}
      },
      "id": "webhook",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [0, 0],
      "webhookId": "gmb-api"
    },
    {
      "parameters": {
        "jsCode": "// Run: bun n8n/scripts/build-workflows.ts to embed api-handler-datatables.js"
      },
      "id": "api-handler",
      "name": "API Handler",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [220, 0]
    },
    {
      "parameters": {
        "jsCode": "const data = $('API Handler').first().json;\nconst { _emailJobs, ...response } = data;\nreturn [{ json: response }];"
      },
      "id": "prepare-response",
      "name": "Prepare Response",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [440, -120]
    },
    {
      "parameters": {
        "respondWith": "json",
        "responseBody": "={{ $json }}",
        "options": {
          "responseCode": "={{ $json.error ? 400 : 200 }}"
        }
      },
      "id": "respond",
      "name": "Respond to Webhook",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1.1,
      "position": [660, -120]
    },
    {
      "parameters": {
        "conditions": {
          "options": { "caseSensitive": true, "leftValue": "", "typeValidation": "strict" },
          "conditions": [
            {
              "id": "email-jobs",
              "leftValue": "={{ $json._emailJobs?.length || 0 }}",
              "rightValue": 0,
              "operator": { "type": "number", "operation": "gt" }
            }
          ],
          "combinator": "and"
        }
      },
      "id": "if-emails",
      "name": "Has Email Jobs?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2,
      "position": [440, 120]
    },
    {
      "parameters": {
        "jsCode": "const jobs = $('API Handler').first().json._emailJobs || [];\n// Stagger sends so Gmail is not hammered (5s between each email in a batch)\nconst SECONDS_BETWEEN = 5;\nreturn jobs.map((j, i) => ({\n  json: {\n    ...j,\n    _send_index: i,\n    _send_delay_seconds: i * SECONDS_BETWEEN,\n  },\n}));"
      },
      "id": "split-emails",
      "name": "Split Email Jobs",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [660, 120]
    },
    {
      "parameters": {
        "workflowId": "={{ $env.GMB_WF_SEND_EMAIL_ID }}",
        "mode": "each"
      },
      "id": "exec-send-email",
      "name": "Send Review Email WF",
      "type": "n8n-nodes-base.executeWorkflow",
      "typeVersion": 1,
      "position": [880, 120],
      "onError": "continueErrorOutput"
    }
  ],
  "connections": {
    "Webhook": {
      "main": [[{ "node": "API Handler", "type": "main", "index": 0 }]]
    },
    "API Handler": {
      "main": [
        [
          { "node": "Prepare Response", "type": "main", "index": 0 },
          { "node": "Has Email Jobs?", "type": "main", "index": 0 }
        ]
      ]
    },
    "Prepare Response": {
      "main": [[{ "node": "Respond to Webhook", "type": "main", "index": 0 }]]
    },
    "Has Email Jobs?": {
      "main": [
        [{ "node": "Split Email Jobs", "type": "main", "index": 0 }],
        []
      ]
    },
    "Split Email Jobs": {
      "main": [[{ "node": "Send Review Email WF", "type": "main", "index": 0 }]]
    }
  },
  "settings": { "executionOrder": "v1" }
}