LenovoLegionToolkit

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using System;
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using System.Threading.Tasks;
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using LenovoLegionToolkit.Lib.System;
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namespace LenovoLegionToolkit.Lib.Features.WhiteKeyboardBacklight;
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public class WhiteKeyboardDriverBacklightFeature : AbstractDriverFeature<WhiteKeyboardBacklightState>
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{
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    public WhiteKeyboardDriverBacklightFeature() : base(Drivers.GetEnergy, Drivers.IOCTL_ENERGY_KEYBOARD) { }
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    public override async Task<bool> IsSupportedAsync()
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    {
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        try
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        {
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            var outBuffer = await SendCodeAsync(DriverHandle(), ControlCode, 0x1).ConfigureAwait(false);
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            outBuffer >>= 1;
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            return outBuffer == 0x2;
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        }
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        catch
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        {
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            return false;
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        }
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    }
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    protected override uint GetInBufferValue() => 0x22;
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    protected override Task<uint[]> ToInternalAsync(WhiteKeyboardBacklightState state)
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    {
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        var result = state switch
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        {
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            WhiteKeyboardBacklightState.Off => new uint[] { 0x00023 },
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            WhiteKeyboardBacklightState.Low => new uint[] { 0x10023 },
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            WhiteKeyboardBacklightState.High => new uint[] { 0x20023 },
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            _ => throw new InvalidOperationException("Invalid state"),
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        };
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        return Task.FromResult(result);
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    }
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    protected override Task<WhiteKeyboardBacklightState> FromInternalAsync(uint state)
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    {
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        var result = state switch
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        {
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            0x1 => WhiteKeyboardBacklightState.Off,
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            0x3 => WhiteKeyboardBacklightState.Low,
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            0x5 => WhiteKeyboardBacklightState.High,
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            _ => throw new InvalidOperationException("Invalid state"),
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        };
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        return Task.FromResult(result);
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    }
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}
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