{
  "nodes": [
    {
      "name": "Read the table by GET",
      "type": "n8n-nodes-base.webhook",
      "position": [
        100,
        240
      ],
      "parameters": {
        "authentication": "none",
        "httpMethod": "GET",
        "path": "google-sheet-table-json-api",
        "responseMode": "lastNode",
        "responseData": "allEntries",
        "options": {
          "responseCode": 200,
          "responseContentType": "application/json; charset=utf-8"
        }
      },
      "typeVersion": 1,
      "id": "google-sheet-table-json-api-webhook"
    },
    {
      "name": "Read the problem table",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        340,
        240
      ],
      "parameters": {
        "authentication": "serviceAccount",
        "resource": "sheet",
        "operation": "read",
        "sheetId": "YOUR_SPREADSHEET_ID",
        "range": "Problems!A:D",
        "rawData": true,
        "dataProperty": "values",
        "keyRow": 0,
        "dataStartRow": 1,
        "options": {
          "valueRenderMode": "UNFORMATTED_VALUE",
          "continue": false
        }
      },
      "typeVersion": 1,
      "id": "google-sheet-table-json-api-read"
    },
    {
      "id": "google-sheet-table-json-api-rows",
      "name": "Build table rows from headers",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        580,
        240
      ],
      "parameters": {
        "mode": "runOnceForAllItems",
        "jsCode": "function sheetTableRows({ values }) {\n  if (!Array.isArray(values) || values.some(row => !Array.isArray(row))) throw new Error('Expected the sheet range as rows of cell values');\n  for (const row of values) for (const cell of row) if (cell !== null && typeof cell !== 'string' && typeof cell !== 'boolean' && !(typeof cell === 'number' && Number.isFinite(cell))) throw new Error('The sheet returned an invalid cell value');\n  if (!values.length) return { rows: [] };\n  const headers = values[0], rows = [];\n  for (const cells of values.slice(1)) {\n    const row = Object.create(null);\n    for (let column = 0; column < cells.length; column++) {\n      const header = headers[column];\n      if (header) row[String(header)] = cells[column];\n    }\n    if (Object.keys(row).length) rows.push(row);\n  }\n  return { rows };\n}\n\nconst items=$input.all();if(items.length===0)return [];if(items.length!==1)throw new Error(\"Expected one complete sheet range\");return sheetTableRows({values:items[0].json.values}).rows.map(row=>({json:row}));"
      }
    }
  ],
  "connections": {
    "Read the table by GET": {
      "main": [
        [
          {
            "node": "Read the problem table",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Read the problem table": {
      "main": [
        [
          {
            "node": "Build table rows from headers",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "name": "Google Sheet Table JSON API",
  "settings": {
    "executionOrder": "v1"
  },
  "active": false,
  "pinData": {}
}