{
  "name": "Log and Route Twenty CRM Events",
  "tags": [],
  "nodes": [
    {
      "id": "log-and-route-twenty-crm-events-0",
      "name": "Receive Twenty CRM events",
      "type": "n8n-nodes-base.webhook",
      "position": [
        600,
        380
      ],
      "parameters": {
        "httpMethod": "POST",
        "path": "log-and-route-twenty-crm-events",
        "responseMode": "onReceived",
        "options": {}
      },
      "typeVersion": 2
    },
    {
      "name": "Prepare signature input",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "const body=$json.body,headers=$json.headers;if(!body||typeof body!=='object'||Array.isArray(body)||!headers)throw Error('Invalid Twenty request');const h=Object.fromEntries(Object.entries(headers).map(([k,v])=>[k.toLowerCase(),v])),timestamp=h['x-twenty-webhook-timestamp'],signature=h['x-twenty-webhook-signature'];if(typeof timestamp!=='string'||!/^\\d{13}$/.test(timestamp)||Math.abs(Date.now()-Number(timestamp))>900000||typeof signature!=='string'||!/^[0-9a-f]{64}$/.test(signature))throw Error('Invalid Twenty signature or timestamp');return {json:{body,signature,signed:timestamp+':'+JSON.stringify(body)}};"
      },
      "id": "log-and-route-twenty-crm-events-1"
    },
    {
      "name": "Calculate the webhook signature",
      "type": "n8n-nodes-base.crypto",
      "typeVersion": 1,
      "parameters": {
        "action": "hmac",
        "type": "SHA256",
        "binaryData": false,
        "value": "={{ $json.signed }}",
        "secret": "={{ (() => { const s=$vars.TWENTY_WEBHOOK_SECRET; if(typeof s!=='string'||!s) throw Error('Configure Twenty webhook secret'); return s; })() }}",
        "encoding": "hex",
        "dataPropertyName": "expected"
      },
      "id": "log-and-route-twenty-crm-events-2"
    },
    {
      "name": "Verify and read the event",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "const {body,signature,expected}=$json;if(typeof expected!=='string'||expected.length!==64)throw Error('Invalid signature result');let diff=0;for(let i=0;i<64;i++)diff|=expected.charCodeAt(i)^signature.charCodeAt(i);if(diff)throw Error('Invalid Twenty signature');const event=body.eventName,meta=body.objectMetadata,record=body.record;if(typeof event!=='string'||!/^.+\\.[^.]+$/.test(event)||!meta||typeof meta.id!=='string'||!meta.id||!record||typeof record.id!=='string'||!record.id)throw Error('Invalid Twenty record event');return {json:{deleted:['delete','deleted'].includes(event.split('.')[1]),event,metadataId:meta.id,metadataName:typeof meta.nameSingular==='string'?meta.nameSingular:'',recordId:record.id,recordType:typeof record.__typename==='string'?record.__typename:''}};"
      },
      "id": "log-and-route-twenty-crm-events-3"
    },
    {
      "name": "Append the event log",
      "type": "n8n-nodes-base.googleSheets",
      "typeVersion": 4.5,
      "parameters": {
        "operation": "append",
        "documentId": {
          "__rl": true,
          "mode": "id",
          "value": "YOUR_SPREADSHEET_ID"
        },
        "sheetName": {
          "__rl": true,
          "mode": "name",
          "value": "Events"
        },
        "columns": {
          "mappingMode": "defineBelow",
          "value": {
            "eventName": "={{ $('Verify and read the event').item.json.event }}",
            "objectMetadata.id": "={{ $('Verify and read the event').item.json.metadataId }}",
            "objectMetadata.nameSingular": "={{ $('Verify and read the event').item.json.metadataName }}",
            "record.id": "={{ $('Verify and read the event').item.json.recordId }}",
            "record.__typename": "={{ $('Verify and read the event').item.json.recordType }}"
          },
          "schema": [
            {
              "id": "eventName",
              "displayName": "eventName",
              "type": "string",
              "display": true,
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true
            },
            {
              "id": "objectMetadata.id",
              "displayName": "objectMetadata.id",
              "type": "string",
              "display": true,
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true
            },
            {
              "id": "objectMetadata.nameSingular",
              "displayName": "objectMetadata.nameSingular",
              "type": "string",
              "display": true,
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true
            },
            {
              "id": "record.id",
              "displayName": "record.id",
              "type": "string",
              "display": true,
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true
            },
            {
              "id": "record.__typename",
              "displayName": "record.__typename",
              "type": "string",
              "display": true,
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true
            }
          ],
          "matchingColumns": []
        },
        "options": {
          "cellFormat": "RAW",
          "useAppend": true
        }
      },
      "id": "log-and-route-twenty-crm-events-4"
    },
    {
      "name": "Was the record deleted?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "typeValidation": "strict",
            "version": 2
          },
          "conditions": [
            {
              "id": "deleted",
              "leftValue": "={{ $('Verify and read the event').item.json.deleted }}",
              "rightValue": true,
              "operator": {
                "type": "boolean",
                "operation": "true",
                "singleValue": true
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "id": "log-and-route-twenty-crm-events-5"
    },
    {
      "name": "Email deletion details",
      "type": "n8n-nodes-base.gmail",
      "typeVersion": 2.1,
      "parameters": {
        "sendTo": "YOUR_ALERT_EMAIL",
        "subject": "Record Deleted in TwentyCRM",
        "emailType": "text",
        "message": "={{ 'Object metadata ID: '+ $('Verify and read the event').item.json.metadataId + '\\nRecord ID: '+ $('Verify and read the event').item.json.recordId }}",
        "options": {
          "appendAttribution": false
        }
      },
      "id": "log-and-route-twenty-crm-events-6"
    },
    {
      "name": "Send the event to Slack",
      "type": "n8n-nodes-base.slack",
      "typeVersion": 2.2,
      "parameters": {
        "select": "channel",
        "channelId": {
          "__rl": true,
          "mode": "id",
          "value": "YOUR_SLACK_CHANNEL_ID"
        },
        "text": "={{ (() => { const x=$('Verify and read the event').item.json, esc=v=>v.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;'); return 'event: '+esc(x.event)+'\\nevent_id: '+esc(x.metadataId)+'\\nrecord_id: '+esc(x.recordId); })() }}",
        "otherOptions": {
          "includeLinkToWorkflow": false
        }
      },
      "id": "log-and-route-twenty-crm-events-7"
    }
  ],
  "active": false,
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "connections": {
    "Receive Twenty CRM events": {
      "main": [
        [
          {
            "node": "Prepare signature input",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Prepare signature input": {
      "main": [
        [
          {
            "node": "Calculate the webhook signature",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Calculate the webhook signature": {
      "main": [
        [
          {
            "node": "Verify and read the event",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Verify and read the event": {
      "main": [
        [
          {
            "node": "Append the event log",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Append the event log": {
      "main": [
        [
          {
            "node": "Was the record deleted?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Was the record deleted?": {
      "main": [
        [
          {
            "node": "Email deletion details",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Send the event to Slack",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}