2-way REST binary_sensor

@senatorchimera wrote:

I am trying to automate my garage door and have a Raspberry Pi monitoring the door status and am not sure if I am doing it the right way. From what I can tell so far in Home Assistant, the best way to do this would be for me to create a REST binary_sensor in Home Assistant. The problem I have with that configuration is the REST binary_sensor is a polling service that polls every minute and not real-time. I would like for the Pi to push the door status on change. I am thinking using the Home Assistant REST API is the best way to keep the status real-time, but seem to be having some issues getting the correct syntax.

Here is my configuration:

configuration.yaml

    binary_sensor:
      - platform: rest
        resource: http://192.168.1.6:5000/api/status/leftdoor
        method: POST
        name: Left Garage Door
        device_class: garage_door
        value_template: '{{ value_json.status }}'

I can call the endpoint using CURL and get the following:

    curl --request GET 192.168.1.6:5000/api/status/leftdoor
returns
    {"status":"Closed"}

I can call my home assistant API and get the following:

    curl --request GET 192.168.1.216:8123/api/states/binary_sensor.left_garage_door
returns
    {{
        "attributes": {
            "device_class": "garage_door",
            "friendly_name": "Left Garage Door"
        },
        "context": {
            "id": "a7a139b80bc14bee8e27ff24c5fe02a2",
            "parent_id": null,
            "user_id": null
        },
        "entity_id": "binary_sensor.left_garage_door",
        "last_changed": "2020-03-20T16:46:47.789213+00:00",
        "last_updated": "2020-03-20T16:46:47.789213+00:00",
        "state": "off"
    }

Here is where I have an issue. I am not sure what to put in the Home Assistant REST API to properly show a changed status

When I post:
curl --request POST 192.168.1.216:8123/api/states/binary_sensor.left_garage_door

What do I send in the body?

{"state": "Closed"}
or
{"state": "off"}

neither seems to reflect the same status as the true closed status of the garage door.

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