{
  "nodes": [
    {
      "id": "remind-notion-assignees-in-slack-0",
      "name": "Weekdays at 09:00 UTC",
      "type": "n8n-nodes-base.cron",
      "position": [
        -600,
        380
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "mode": "custom",
              "cronExpression": "0 9 * * 1,2,3,4,5"
            }
          ]
        }
      },
      "typeVersion": 1
    },
    {
      "id": "remind-notion-assignees-in-slack-1",
      "name": "Read tasks",
      "type": "n8n-nodes-base.notion",
      "position": [
        20,
        380
      ],
      "parameters": {
        "resource": "databasePage",
        "operation": "getAll",
        "databaseId": {
          "__rl": true,
          "mode": "id",
          "value": "YOUR_NOTION_DATABASE_ID"
        },
        "returnAll": true,
        "simple": false,
        "options": {}
      },
      "typeVersion": 2,
      "alwaysOutputData": true
    },
    {
      "id": "remind-notion-assignees-in-slack-2",
      "name": "Read Slack users",
      "type": "n8n-nodes-base.slack",
      "position": [
        440,
        380
      ],
      "parameters": {
        "resource": "user",
        "operation": "getAll",
        "returnAll": true,
        "authentication": "oAuth2"
      },
      "executeOnce": true,
      "typeVersion": 1,
      "alwaysOutputData": true
    },
    {
      "name": "Match assignees and tasks",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "mode": "runOnceForAllItems",
        "jsCode": "function plan({state,user1,user2,name1,name2}){\n  const pairs=[[user1,name1],[user2,name2]];\n  if(pairs.some(([a,b])=>typeof a!=='string'||!a.trim()||typeof b!=='string'||!b.trim()||a.startsWith('YOUR_')||b.startsWith('YOUR_'))||user1===user2||name1===name2)throw Error('Configure two distinct Notion user IDs and Slack names');\n  if(!Array.isArray(state?.users)||!Array.isArray(state?.tasks))throw Error('Incomplete read state');\n  const users=pairs.map(([,name])=>{const matches=state.users.filter(u=>!u.isDeleted&&u.realName===name);if(matches.length!==1||!matches[0].userId)throw Error('Slack name must identify exactly one user');return matches[0].userId});\n  const out=[];\n  for(const page of state.tasks){\n    const p=page.properties;if(!p||typeof p!=='object')throw Error('Missing task properties');\n    const status=p.Status?.status?.name??p.Status?.select?.name;if(typeof status!=='string')throw Error('Missing Status');if(status==='Done')continue;\n    const title=p.Task?.title;if(!Array.isArray(title))throw Error('Missing Task title');const task=title.map(x=>x.plain_text??x.text?.content??'').join('');if(!task)throw Error('Empty task title');\n    const people=p['Notion User']?.people;if(!Array.isArray(people)||people.length>=25)throw Error('Missing or possibly truncated Notion User people');\n    const ids=people.map(u=>{if(typeof u.id!=='string'||!u.id)throw Error('Assignee ID unavailable');return u.id});\n    const due=p.Due?.date?.start;if(typeof due!=='string'||!due)throw Error('Missing task due date');\n    const i=pairs.findIndex(([id])=>ids.includes(id));if(i>=0)out.push({channelId:users[i],text:'# TO DO\\n☑️ '+task+' (Due: '+due+')'});\n  }\n  return {items:out};\n}\n\nconst rawTasks=$('Read tasks').all().map(x=>x.json),rawUsers=$input.all().map(x=>x.json);const nonempty=x=>Object.keys(x).length>0;const tasks=rawTasks.filter(nonempty),slack=rawUsers.filter(nonempty);if(tasks.some(x=>x.object!=='page')||slack.some(x=>!x.id))throw Error('Invalid source response');const users=slack.map(x=>({userId:x.id,realName:x.profile?.real_name,isDeleted:x.deleted}));const r=plan({state:{tasks,users},user1:'YOUR_NOTION_USER_ID_1',user2:'YOUR_NOTION_USER_ID_2',name1:'YOUR_SLACK_FULL_NAME_1',name2:'YOUR_SLACK_FULL_NAME_2'});return r.items.map(x=>({json:x}));"
      },
      "id": "remind-notion-assignees-in-slack-3"
    },
    {
      "name": "Send reminders one at a time",
      "type": "n8n-nodes-base.splitInBatches",
      "typeVersion": 3,
      "parameters": {
        "batchSize": 1,
        "options": {}
      },
      "id": "remind-notion-assignees-in-slack-4"
    },
    {
      "id": "remind-notion-assignees-in-slack-5",
      "name": "Send a Slack reminder",
      "type": "n8n-nodes-base.slack",
      "position": [
        1200,
        260
      ],
      "parameters": {
        "channel": "={{ $json.channelId }}",
        "text": "={{ $json.text }}",
        "otherOptions": {},
        "authentication": "oAuth2"
      },
      "typeVersion": 1
    }
  ],
  "pinData": {},
  "connections": {
    "Weekdays at 09:00 UTC": {
      "main": [
        [
          {
            "node": "Read tasks",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Read tasks": {
      "main": [
        [
          {
            "node": "Read Slack users",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Read Slack users": {
      "main": [
        [
          {
            "node": "Match assignees and tasks",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Match assignees and tasks": {
      "main": [
        [
          {
            "node": "Send reminders one at a time",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Send a Slack reminder": {
      "main": [
        [
          {
            "node": "Send reminders one at a time",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Send reminders one at a time": {
      "main": [
        [],
        [
          {
            "node": "Send a Slack reminder",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "name": "Remind Notion Assignees in Slack",
  "active": false,
  "settings": {
    "timezone": "UTC",
    "executionOrder": "v1"
  }
}