Possible to add support for low/high night light levels?

[Valdorama]

The problem

Some air purifier (and possibly other device) models have night lights that have multiple (usually two) dimming levels. An example is the Core 200s air purifier whose night light can be set to low or high brightness.

The night light is currently implemented as a separate light entity and this works to turn it off and on. On the Core 200s, turning the light entity on turns on the night light on high brightness.

Is there any way to allow the brightness level to be controlled? Not sure how that could be done as a light entity e.g. do light entities support discrete levels rather than just on/off and dimming level?

What version of this integration has the issue?

0.1.16

What version of Home Assistant Core has the issue?

2022.8.7

Diagnostics

Diagnostics

Copy/paste diagnostics here between the starting and ending backticks.

Home Assistant log

Logs

Copy/paste any log here, between the starting and ending backticks.

Additional information

No response

[vlebourl]

There should be a way as light entities support levels (see the hue integration for instance). Could you add your diagnostics to the thread so I can have a look? I may ask to get access to your device at some point to test the implementation, if that's ok with you.
Cheers

[Valdorama]

Here are the diagnostics with the night light on high brightness:

"data": {
    "fans": [
      {
        "device_name": "Levoit Smart True HEPA Air Purifier",
        "device_image": "https://image.vesync.com/defaultImages/deviceDefaultImages/wifibtonboarding_airpurifier_core200s_us_240.png",
        "cid": "**REDACTED**",
        "connection_status": "online",
        "connection_type": "wifi+BTOnboarding",
        "device_type": "Core200S",
        "type": "wifi-air",
        "uuid": "**REDACTED**",
        "config_module": "WiFiBTOnboarding_AirPurifier_Core200S_US",
        "mac_id": "**REDACTED**",
        "mode": "manual",
        "speed": 1,
        "extension": {
          "airQuality": -1,
          "airQualityLevel": 1,
          "mode": "manual",
          "fanSpeedLevel": "1"
        },
        "current_firm_version": null,
        "sub_device_no": null,
        "config": {
          "display": true,
          "display_forever": false
        },
        "device_status": "off",
        "enabled": false,
        "config_dict": {
          "module": "VeSyncAirBypass",
          "models": [
            "Core200S",
            "LAP-C201S-AUSR",
            "LAP-C202S-WUSR"
          ],
          "modes": [
            "sleep",
            "off"
          ],
          "features": [],
          "levels": [
            1,
            2,
            3
          ]
        },
        "features": [],
        "modes": [
          "sleep",
          "off"
        ],
        "air_quality_feature": false,
        "details": {
          "filter_life": 75,
          "mode": "manual",
          "level": 0,
          "display": false,
          "child_lock": false,
          "night_light": "on",
          "display_forever": false
        }
      }
    ]
  }

Diagnostics with night light on low brightness:

"data": {
    "fans": [
      {
        "device_name": "Levoit Smart True HEPA Air Purifier",
        "device_image": "https://image.vesync.com/defaultImages/deviceDefaultImages/wifibtonboarding_airpurifier_core200s_us_240.png",
        "cid": "**REDACTED**",
        "connection_status": "online",
        "connection_type": "wifi+BTOnboarding",
        "device_type": "Core200S",
        "type": "wifi-air",
        "uuid": "**REDACTED**",
        "config_module": "WiFiBTOnboarding_AirPurifier_Core200S_US",
        "mac_id": "**REDACTED**",
        "mode": "manual",
        "speed": 1,
        "extension": {
          "airQuality": -1,
          "airQualityLevel": 1,
          "mode": "manual",
          "fanSpeedLevel": "1"
        },
        "current_firm_version": null,
        "sub_device_no": null,
        "config": {
          "display": true,
          "display_forever": false
        },
        "device_status": "off",
        "enabled": false,
        "config_dict": {
          "module": "VeSyncAirBypass",
          "models": [
            "Core200S",
            "LAP-C201S-AUSR",
            "LAP-C202S-WUSR"
          ],
          "modes": [
            "sleep",
            "off"
          ],
          "features": [],
          "levels": [
            1,
            2,
            3
          ]
        },
        "features": [],
        "modes": [
          "sleep",
          "off"
        ],
        "air_quality_feature": false,
        "details": {
          "filter_life": 75,
          "mode": "manual",
          "level": 0,
          "display": false,
          "child_lock": false,
          "night_light": "dim",
          "display_forever": false
        }
      }
    ]
  }

[github-actions]

'There hasn't been any activity on this issue recently. Is this issue still present?
Please make sure to update to the latest Home Assistant version and version of this integration to see if that solves the issue. Let us know if that works for you by adding a comment 👍.
This issue now has been marked as stale and will be closed if no further activity occurs. Thank you for your contributions.'

[vlebourl]

Still active.

[Valdorama]

Is this still active..?

[vlebourl]

haven't had any time to look into it...
I'll reopen

[Valdorama]

Thank you. No rush at all, appreciate your efforts.

[vlebourl]

looks fairly easy actually!

[vlebourl]

Could you try the branch and let me know whether that works?

[Valdorama]

Do I just replace light.py with the version from the branch and reload the integration?

[Valdorama]

I replaced light.py and I can now control the brightness of the nightlight (even though it's really only two levels):

Thank you!

[vlebourl]

if that's usable enough, I'll publish it as is.

[Valdorama]

Yes, it's usable enough for me.

[vlebourl]

closed by #52.