The workflow JSON

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{
  "name": "Provider Health Logger",
  "nodes": [
    {
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "cronExpression",
              "expression": "0 7 * * *"
            }
          ]
        }
      },
      "id": "wf12-trigger",
      "name": "Cron: Daily 07:00 Lagos",
      "type": "n8n-nodes-base.cron",
      "typeVersion": 1,
      "position": [
        0,
        0
      ]
    },
    {
      "parameters": {
        "operation": "select",
        "table": "provider_log",
        "columns": "provider, event_type,\n                    COUNT(*) FILTER (WHERE status = 'ok') as ok_count,\n                    COUNT(*) FILTER (WHERE status = 'error') as error_count",
        "conditions": "event_type = 'health_check' AND timestamp >= NOW() - INTERVAL '24 hours'",
        "groupBy": "provider, event_type"
      },
      "id": "wf12-summary",
      "name": "24h Health Summary",
      "type": "n8n-nodes-base.postgres",
      "typeVersion": 1,
      "position": [
        200,
        0
      ]
    },
    {
      "parameters": {
        "functionCode": "const rows = $input.all();\nif (rows.length === 0) {\n    return [{ json: { message: '\ud83d\udcca Provider Health Report\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\n\\nNo health checks recorded in last 24h.\\nAll systems quiet.' }}];\n}\n\nlet message = '\ud83d\udcca Provider Health Report (24h)\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\n\\n';\nfor (const row of rows) {\n    const r = row.json;\n    const icon = r.error_count === 0 ? '\u2705' : '\u26a0\ufe0f';\n    message += icon + ' ' + r.provider + ': ' + r.ok_count + ' OK / ' + r.error_count + ' errors\\n';\n}\nmessage += '\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501';\n\nreturn [{ json: { message }}];"
      },
      "id": "wf12-format",
      "name": "Format Message",
      "type": "n8n-nodes-base.function",
      "typeVersion": 1,
      "position": [
        400,
        0
      ]
    },
    {
      "parameters": {
        "message": "{{ $json.message }}"
      },
      "id": "wf12-send",
      "name": "Send to Admin",
      "type": "n8n-nodes-base.whatsApp",
      "typeVersion": 1,
      "position": [
        600,
        0
      ]
    }
  ],
  "connections": {
    "Cron: Daily 07:00 Lagos": {
      "main": [
        [
          {
            "node": "24h Health Summary",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "24h Health Summary": {
      "main": [
        [
          {
            "node": "Format Message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Format Message": {
      "main": [
        [
          {
            "node": "Send to Admin",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": false,
    "timezone": "Africa/Lagos"
  },
  "staticData": null,
  "tags": [
    "provider",
    "health",
    "daily",
    "admin"
  ]
}

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