{
  "name": "Append and Adjust Berlin Rent in Google Sheets",
  "nodes": [
    {
      "name": "On clicking 'execute'",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        450,
        450
      ],
      "parameters": {},
      "typeVersion": 1,
      "id": "append-and-adjust-berlin-rent-in-sheets-0"
    },
    {
      "name": "Set",
      "type": "n8n-nodes-base.set",
      "position": [
        650,
        450
      ],
      "parameters": {
        "values": {
          "number": [
            {
              "name": "ID",
              "value": "={{Math.floor(Math.random()*1000)}}"
            },
            {
              "name": "Rent",
              "value": 1000
            }
          ],
          "string": [
            {
              "name": "Name",
              "value": "John's Place"
            },
            {
              "name": "City",
              "value": "Berlin"
            }
          ]
        },
        "options": {},
        "keepOnlySet": true
      },
      "typeVersion": 1,
      "id": "append-and-adjust-berlin-rent-in-sheets-1"
    },
    {
      "name": "Google Sheets",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        850,
        450
      ],
      "parameters": {
        "range": "A:D",
        "options": {
          "valueInputMode": "USER_ENTERED"
        },
        "sheetId": "YOUR_SPREADSHEET_ID",
        "operation": "append",
        "authentication": "oAuth2"
      },
      "typeVersion": 1,
      "id": "append-and-adjust-berlin-rent-in-sheets-2"
    },
    {
      "name": "Read properties",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "method": "GET",
        "url": "={{ 'https://sheets.googleapis.com/v4/spreadsheets/' + encodeURIComponent($('Google Sheets').params.sheetId) + '/values/A%3AD?valueRenderOption=UNFORMATTED_VALUE' }}",
        "authentication": "predefinedCredentialType",
        "nodeCredentialType": "googleSheetsOAuth2Api",
        "options": {
          "timeout": 30000
        }
      },
      "id": "append-and-adjust-berlin-rent-in-sheets-3"
    },
    {
      "name": "Prepare Berlin rent cells",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "mode": "runOnceForAllItems",
        "jsCode": "function plan({values}){const h=values?.[0];if(!Array.isArray(h)||h.length!==4||new Set(h).size!==4||!['ID','Name','Rent','City'].every(x=>h.includes(x)))throw Error('First row must have unique ID, Name, Rent, City headers in A:D');const ids=new Map(),items=[];for(let i=1;i<values.length;i++){const r=values[i];if(!Array.isArray(r)||!r.length)continue;const id=r[h.indexOf('ID')];if(id===undefined||id===null||id==='')throw Error('Each row must have an ID');const k=String(id);ids.set(k,(ids.get(k)||0)+1);if(r[h.indexOf('City')]==='Berlin'){const rent=r[h.indexOf('Rent')];if(typeof rent!=='number'||!Number.isFinite(rent))throw Error('Berlin rent must be numeric');items.push({id,range:String.fromCharCode(65+h.indexOf('Rent'))+(i+1),values:[[rent+100]]})}}for(const item of items)if(ids.get(String(item.id))!==1)throw Error('Matching row ID is not unique');return{more:items.length>0,data:items.length?items.map(({range,values})=>({range,values})):[{range:'A1',values:[[null]]}]}}\n\nconst result=plan({values:$input.first().json.values??[]});if(!result.more)return [];return [{json:{data:result.data}}];"
      },
      "id": "append-and-adjust-berlin-rent-in-sheets-4"
    },
    {
      "name": "Update rent cells",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "method": "POST",
        "url": "={{ 'https://sheets.googleapis.com/v4/spreadsheets/' + encodeURIComponent($('Google Sheets').params.sheetId) + '/values:batchUpdate' }}",
        "authentication": "predefinedCredentialType",
        "nodeCredentialType": "googleSheetsOAuth2Api",
        "sendBody": true,
        "contentType": "json",
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify({data:$json.data,valueInputOption:\"USER_ENTERED\"}) }}",
        "options": {
          "timeout": 30000
        }
      },
      "id": "append-and-adjust-berlin-rent-in-sheets-5"
    },
    {
      "name": "Google Sheets3",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        1650,
        450
      ],
      "parameters": {
        "range": "A:D",
        "options": {
          "valueRenderMode": "FORMATTED_VALUE"
        },
        "sheetId": "={{ $node[\"Google Sheets\"].parameter[\"sheetId\"] }}",
        "authentication": "oAuth2"
      },
      "typeVersion": 1,
      "id": "append-and-adjust-berlin-rent-in-sheets-6"
    }
  ],
  "active": false,
  "settings": {},
  "connections": {
    "On clicking 'execute'": {
      "main": [
        [
          {
            "node": "Set",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Set": {
      "main": [
        [
          {
            "node": "Google Sheets",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Google Sheets": {
      "main": [
        [
          {
            "node": "Read properties",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Read properties": {
      "main": [
        [
          {
            "node": "Prepare Berlin rent cells",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Prepare Berlin rent cells": {
      "main": [
        [
          {
            "node": "Update rent cells",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Update rent cells": {
      "main": [
        [
          {
            "node": "Google Sheets3",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "pinData": {}
}