LenovoLegionToolkit

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using System;
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using System.Threading.Tasks;
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using LenovoLegionToolkit.Lib.Extensions;
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using LenovoLegionToolkit.Lib.System;
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namespace LenovoLegionToolkit.Lib.Features;
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public class FnLockFeature : AbstractDriverFeature<FnLockState>
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{
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    public FnLockFeature() : base(Drivers.GetEnergy, Drivers.IOCTL_ENERGY_SETTINGS) { }
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    protected override uint GetInBufferValue() => 0x2;
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    protected override Task<uint[]> ToInternalAsync(FnLockState state)
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    {
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        var lockOn = state switch
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        {
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            FnLockState.On => true,
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            FnLockState.Off => false,
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            _ => throw new InvalidOperationException("Invalid state"),
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        };
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        var value = lockOn ? new uint[] { 0xE } : new uint[] { 0xF };
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        return Task.FromResult(value);
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    }
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    protected override Task<FnLockState> FromInternalAsync(uint state)
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    {
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        var value = state.GetNthBit(10) ? FnLockState.On : FnLockState.Off;
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        return Task.FromResult(value);
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    }
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}
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