using Microsoft.Extensions.Logging;
using SSPCTester.Devices.Interfaces;

namespace SSPCTester.Devices.Drivers.Mock;

public sealed class MockSafetyDio : MockDeviceBase, ISafetyDio
{
    private readonly bool[] _inputs = new bool[16];
    private readonly bool[] _outputs = new bool[16];

    public MockSafetyDio(ILogger<MockSafetyDio> logger)
        : base(logger, "PCI2312 (Mock)")
    {
    }

    public Task<bool> ReadInputAsync(int channel, CancellationToken ct = default)
    {
        ValidateChannel(channel);
        return Task.FromResult(_inputs[channel]);
    }

    public Task WriteOutputAsync(int channel, bool on, CancellationToken ct = default)
    {
        ValidateChannel(channel);
        _outputs[channel] = on;
        return Task.CompletedTask;
    }

    private static void ValidateChannel(int channel)
    {
        if (channel is < 0 or > 15)
            throw new ArgumentOutOfRangeException(nameof(channel), channel, "PCI2312 channel must be 0-15.");
    }
}