Node-Red UniFi Presence.md

Ubiquiti UniFi Presence Detection

Uses a UniFi node to monitor a UniFi management instance for named devices and their "Last Seen" values to determine device presence on the network.

Usage

1. Install the node-red-contrib-unifi package.
2. Past into a new or existing flow.
3. Modify the UniFi node settings.
4. Change the list of devices in the "Determine device presence" node. It maps the final MQTT topic that will be used to announce presence to the device name setup in UniFi for a client. Could be easily changed to be based on MAC address, etc., but if you name the devices in UniFi you can then later change those names without changing this flow.

unifiPresence.json

[{"id":"a79a3412.95bbc8","type":"comment","z":"198805b3.d752aa","name":"Presence","info":"","x":100,"y":1420,"wires":[]},{"id":"356d290f.2adc76","type":"inject","z":"198805b3.d752aa","name":"Every 5 seconds","topic":"","payload":"","payloadType":"date","repeat":"5","crontab":"","once":false,"x":130,"y":1460,"wires":[["2fe17f39.cb2e2"]]},{"id":"2fe17f39.cb2e2","type":"Unifi","z":"198805b3.d752aa","name":"","ip":"","port":8443,"site":"default","command":"20","x":310,"y":1460,"wires":[["9c4ebd18.14827"]]},{"id":"9c4ebd18.14827","type":"function","z":"198805b3.d752aa","name":"Determine device presence","func":"const lastSeenSeconds = 20;\nlet presenceCutoff = (Math.abs(new Date()) - (lastSeenSeconds * 1000)) / 1000; \nconst people = {\n    \"presence/person1\": \"Identifier1\",\n    \"presence/person2\": \"Identifier2\"\n};\n\nreturn Object.keys(people).map(function(topic) {\n    let devices = msg.payload.filter(device => device.name === people[topic] && device.last_seen > presenceCutoff);\n    return {\n        topic: topic,\n        retain: true,\n        payload: devices.length > 0\n    };\n});","outputs":"2","noerr":0,"x":520,"y":1460,"wires":[["1d706e57.f39ea2"],["84981.f0fe567f"]],"outputLabels":["michael presence","meredith presence"]},{"id":"1d706e57.f39ea2","type":"rbe","z":"198805b3.d752aa","name":"","func":"rbe","gap":"","start":"","inout":"out","x":750,"y":1440,"wires":[["e52f02f3.7cd59"]]},{"id":"84981.f0fe567f","type":"rbe","z":"198805b3.d752aa","name":"","func":"rbe","gap":"","start":"","inout":"out","x":750,"y":1480,"wires":[["e52f02f3.7cd59"]]}]

Hey @groenerik, I had the same problem after upgrading to NR v3. I'm not sure if the Unifi output has changed or if NR is now processing things differently/more strictly.
For example, the change from new Date() to Date.now() was noted as a known bug in the TypeScript parser: https://discourse.nodered.org/t/why-does-new-date-show-as-an-error/88776

But I can say that your fixes do work. Well done and thank you for sharing.