Node-RED Alexa Timers

timer-flow.js

/*
The custom Node-RED integrations from the HACS store must be installed for this to work.

You must create the timers you want to use in your configuration.yaml file for Home Assistant.
For information on creating timer entities for Home Assistant, visit https://www.home-assistant.io/integrations/timer/

This flow gets the current state of the sensor.<entityID>_next_timer and converts it into a HH:MM:SS format. If there are no hours in the timer, it only displays MM:SS.

I suggest using a filter entities card to display the timer. A regular entity card will only return a status of "active" or "idle". I have 4 timers configured so I used the filtered entities card to only show active timers.
*/

[{"id":"eab341f9.2c961","type":"group","z":"97a7aa7b.d1ab4","style":{"stroke":"#999999","stroke-opacity":"1","fill":"none","fill-opacity":"1","label":true,"label-position":"nw","color":"#a4a4a4"},"nodes":["62203df0.703d4c","c3e52440.095a5","6957b1cf.2f2878","c5d2b9df.75395","5686790.84ada08","4f99b257.8ba294","a613a8d4.fc5a98","6f597882.044ab"],"x":-6,"y":-1,"w":972,"h":222},{"id":"62203df0.703d4c","type":"server-state-changed","z":"97a7aa7b.d1ab4","g":"eab341f9.2c961","name":"timer state","server":"2a5e2ac3.7dd716","version":1,"exposeToHomeAssistant":false,"haConfig":[{"property":"name","value":""},{"property":"icon","value":""}],"entityidfilter":"sensor.guest_bedroom_echo_dot_next_timer","entityidfiltertype":"exact","outputinitially":true,"state_type":"str","haltifstate":"","halt_if_type":"str","halt_if_compare":"is","outputs":1,"output_only_on_state_change":false,"for":0,"forType":"num","forUnits":"minutes","ignorePrevStateNull":false,"ignorePrevStateUnknown":false,"ignorePrevStateUnavailable":false,"ignoreCurrentStateUnknown":false,"ignoreCurrentStateUnavailable":false,"x":80,"y":120,"wires":[["c5d2b9df.75395"]]},{"id":"c3e52440.095a5","type":"function","z":"97a7aa7b.d1ab4","g":"eab341f9.2c961","name":"","func":"msg.timestamp = Date.parse(Date())/1000;\nmsg.timer = Date.parse(msg.data.old_state.state)/1000;\nmsg.totalSeconds = Math.floor(msg.timer - msg.timestamp);\nmsg.seconds = Math.floor(msg.totalSeconds % 60) + \"\";\nmsg.minutes = Math.floor(msg.totalSeconds / 60) % 60 + \"\";\nmsg.hours = Math.floor(msg.totalSeconds / 3600) + \"\";\n\n    if (msg.totalSeconds < 60) {\n        if (msg.totalSeconds < 10) {\n            msg.remaining = \"00:00:0\" + msg.seconds;\n        } else {\n        msg.remaining = \"00:00:\" + msg.seconds;\n        }\n    } else if (msg.totalSeconds >= 60) {\n        if (msg.minutes < 10) {\n            msg.remaining = \"00:0\" + msg.minutes + \":\" + msg.seconds;\n        } else {\n            msg.remaining = \"00:\" + msg.minutes + \":\" + msg.seconds;\n        }\n    } else if (msg.totalSeconds >= 3600) {\n        msg.remaining = msg.hours + \":\" + msg.minutes + \":\" + msg.seconds;\n    } else {\n        msg.remaining = \"00:00:00\";\n        return [null,msg]\n    }\nmsg.payload = msg.remaining;\n\nreturn [msg,null];","outputs":2,"noerr":0,"initialize":"","finalize":"","x":360,"y":120,"wires":[["5686790.84ada08","4f99b257.8ba294"],["a613a8d4.fc5a98"]]},{"id":"6957b1cf.2f2878","type":"debug","z":"97a7aa7b.d1ab4","g":"eab341f9.2c961","name":"","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":850,"y":120,"wires":[]},{"id":"c5d2b9df.75395","type":"ha-wait-until","z":"97a7aa7b.d1ab4","g":"eab341f9.2c961","name":"","server":"2a5e2ac3.7dd716","outputs":1,"entityId":"sensor.guest_bedroom_echo_dot_next_timer","entityIdFilterType":"exact","property":"payload","comparator":"is_not","value":"unavailable","valueType":"str","timeout":0,"timeoutType":"num","timeoutUnits":"seconds","entityLocation":"payload","entityLocationType":"msg","checkCurrentState":true,"blockInputOverrides":true,"x":220,"y":120,"wires":[["c3e52440.095a5"]]},{"id":"5686790.84ada08","type":"ha-entity","z":"97a7aa7b.d1ab4","g":"eab341f9.2c961","name":"gbr-nr-timer","server":"2a5e2ac3.7dd716","version":1,"debugenabled":true,"outputs":1,"entityType":"sensor","config":[{"property":"name","value":"gbr-nr-timer"},{"property":"device_class","value":""},{"property":"icon","value":"mdi:clock"},{"property":"unit_of_measurement","value":""}],"state":"payload","stateType":"msg","attributes":[{"property":"duration","value":"payload","valueType":"msg"}],"resend":true,"outputLocation":"payload","outputLocationType":"msg","inputOverride":"allow","outputOnStateChange":false,"outputPayload":"$entity().state ? \"on\": \"off\"","outputPayloadType":"jsonata","x":510,"y":40,"wires":[[]]},{"id":"4f99b257.8ba294","type":"api-call-service","z":"97a7aa7b.d1ab4","g":"eab341f9.2c961","name":"","server":"2a5e2ac3.7dd716","version":1,"debugenabled":false,"service_domain":"timer","service":"start","entityId":"timer.gbr","data":"{\"duration\": \"{{payload}}\",\"entity_id\":\"timer.gbr\"}","dataType":"json","mergecontext":"","output_location":"payload","output_location_type":"msg","mustacheAltTags":false,"x":680,"y":120,"wires":[["6957b1cf.2f2878"]]},{"id":"a613a8d4.fc5a98","type":"api-call-service","z":"97a7aa7b.d1ab4","g":"eab341f9.2c961","name":"","server":"2a5e2ac3.7dd716","version":1,"debugenabled":false,"service_domain":"timer","service":"finish","entityId":"timer.gbr","data":"","dataType":"json","mergecontext":"","output_location":"payload","output_location_type":"msg","mustacheAltTags":false,"x":680,"y":180,"wires":[[]]},{"id":"6f597882.044ab","type":"comment","z":"97a7aa7b.d1ab4","g":"eab341f9.2c961","name":"Guest Bedroom Timer","info":"","x":120,"y":40,"wires":[]},{"id":"2a5e2ac3.7dd716","type":"server","name":"Home Assistant","legacy":false,"addon":true,"rejectUnauthorizedCerts":true,"ha_boolean":"y|yes|true|on|home|open","connectionDelay":true,"cacheJson":true}]