using Microsoft.Extensions.Options;
using SSPCTester.Devices.Config;
using SSPCTester.Devices.Interfaces;
using SSPCTester.Logic.Models;
using SSPCTester.Logic.Testing;

namespace SSPCTester.Tests;

#pragma warning disable CS0067

public sealed class InterfacePowerTests
{
    [Fact]
    public async Task PowerTest_UsesUdpInputAndIt8702pOutputPower()
    {
        var project = new Project();
        var sspc = new MeasuringSspc();
        var forbiddenPower = new ForbiddenPowerSupply();
        var load = new MeasuringLoad();
        var daq = new MeasuringDaq();
        var options = Options.Create(new DeviceOptions
        {
            Daq = new DaqOptions
            {
                ChannelCount = 1,
                Channels = new List<DaqChannelOptions>
                {
                    new() { PhysicalChannel = 0, Role = nameof(DaqChannelRole.OutputVoltage), IsCalibrated = true },
                }
            }
        });
        var power = new FixedPowerSupply();
        var test = new PowerTest(power) { SamplesPerChannel = 1, IntervalMs = 0 };
        var context = new TestContext(project, sspc, forbiddenPower, load, daq);

        await test.RunAsync(context, new Progress<TestProgress>(), CancellationToken.None);

        Assert.Equal(24, project.PowerResults.Count);
        Assert.All(project.PowerResults, row =>
        {
            Assert.Equal(TestStatus.Measured, row.Status);
            Assert.Equal(30.0, row.Vin, 6);   // 输入端电压来自高速采集卡
            Assert.Equal(1.0, row.Iin, 6);    // 通流电流来自 Modbus（Iin = Iout）
            Assert.Equal(28.0, row.Vout, 6);  // 输出端电压来自 Modbus
            Assert.Equal(1.0, row.Iout, 6);
            Assert.Equal(27.5, row.MeasuredPowerOut.GetValueOrDefault(), 6);
            Assert.Equal(2.0, row.PowerLossW, 6);
            Assert.Equal(93.333333, row.EfficiencyPct, 5);
        });
        Assert.Equal(0, sspc.TurnOffCount);
        Assert.Equal(0, sspc.ReadMeasurementCount);
        Assert.Equal(1, power.OutputOnCount);
        Assert.Equal(1, load.InputOnCount);
        Assert.Equal(24, load.ReadPowerCount);
        Assert.Equal(0, daq.ReadInstantCount);
    }

    [Fact]
    public void PowerLossRow_FallsBackToCalculatedOutputPower()
    {
        var row = new PowerLossRow { Vin = 30, Iin = 1, Vout = 28, Iout = 1 };

        Assert.Equal(28, row.PowerOut, 6);
        Assert.Equal(2, row.PowerLossW, 6);
    }

    private sealed class MeasuringSspc : ISspc
    {
        public int TurnOffCount { get; private set; }
        public int ReadMeasurementCount { get; private set; }
        public int ChannelCount => 24;
        public bool IsConnected => true;
        public string DisplayName => "test";
        public event EventHandler<bool>? ConnectionChanged;
        public Task<bool> ConnectAsync(CancellationToken ct = default) => Task.FromResult(true);
        public Task DisconnectAsync() => Task.CompletedTask;
        public Task TurnOnAsync(int physicalSlot, CancellationToken ct = default) => Task.CompletedTask;
        public Task TurnOffAsync(int physicalSlot, CancellationToken ct = default) { TurnOffCount++; return Task.CompletedTask; }
        public Task FlashAsync(int physicalSlot, int milliseconds, CancellationToken ct = default) => Task.CompletedTask;
        public Task<bool> GetChannelStateAsync(int physicalSlot, CancellationToken ct = default) => Task.FromResult(true);
        public Task<ChannelMeasurement> ReadMeasurementAsync(int physicalSlot, CancellationToken ct = default)
        {
            ReadMeasurementCount++;
            return Task.FromResult(new ChannelMeasurement { PhysicalSlot = physicalSlot, Voltage = 28.0, Current = 1.0 });
        }
        public Task<IReadOnlyList<ChannelMeasurement>> ReadMeasurementsAsync(CancellationToken ct = default) =>
            Task.FromResult<IReadOnlyList<ChannelMeasurement>>(Array.Empty<ChannelMeasurement>());
    }

    private sealed class MeasuringDaq : IDaq
    {
        public int ReadInstantCount { get; private set; }
        public bool IsConnected { get; private set; }
        public string DisplayName => "daq";
        public event EventHandler<bool>? ConnectionChanged;
        public event EventHandler<CurveSample>? SampleReceived;

        public Task<bool> ConnectAsync(CancellationToken ct = default)
        {
            IsConnected = true;
            ConnectionChanged?.Invoke(this, true);
            return Task.FromResult(true);
        }

        public Task DisconnectAsync()
        {
            IsConnected = false;
            ConnectionChanged?.Invoke(this, false);
            return Task.CompletedTask;
        }

        public Task<IReadOnlyList<DaqDeviceDescriptor>> EnumerateDevicesAsync(CancellationToken ct = default) =>
            Task.FromResult<IReadOnlyList<DaqDeviceDescriptor>>(Array.Empty<DaqDeviceDescriptor>());

        public Task<CurveData> CaptureAsync(int[] channels, int sampleRateHz, double durationSec, CancellationToken ct = default) =>
            throw new InvalidOperationException();

        public Task<double[]> ReadInstantAsync(int[] channels, CancellationToken ct = default)
        {
            ReadInstantCount++;
            // 采集卡输入端电压固定返回 30V。
            var values = channels.Select(ch => ch == 0 ? 30.0 : double.NaN).ToArray();
            return Task.FromResult(values);
        }

        public Task<CurveData> CaptureAroundActionAsync(DaqActionCaptureRequest request, Func<CancellationToken, Task> action, CancellationToken ct = default) =>
            throw new InvalidOperationException();
    }

    private sealed class MeasuringLoad : ILoad
    {
        public int ReadPowerCount { get; private set; }
        public int InputOnCount { get; private set; }
        public bool IsConnected => true;
        public string DisplayName => "it8702p";
        public event EventHandler<bool>? ConnectionChanged;
        public Task<bool> ConnectAsync(CancellationToken ct = default) => Task.FromResult(true);
        public Task DisconnectAsync() => Task.CompletedTask;
        public Task SetModeAsync(LoadMode mode, CancellationToken ct = default) => throw new InvalidOperationException();
        public Task SetValueAsync(double value, CancellationToken ct = default) => throw new InvalidOperationException();
        public Task ResetAsync(CancellationToken ct = default) => throw new InvalidOperationException();
        public Task InputAsync(bool on, CancellationToken ct = default)
        {
            if (on) InputOnCount++;
            return Task.CompletedTask;
        }
        public Task<bool> GetInputStateAsync(CancellationToken ct = default) => Task.FromResult(true);
        public Task<(double volts, double amps)> ReadAsync(CancellationToken ct = default) => Task.FromResult((28.0, 1.0));
        public Task<PowerReading> ReadPowerAsync(CancellationToken ct = default)
        {
            ReadPowerCount++;
            return Task.FromResult(new PowerReading(28.0, 1.0, 27.5));
        }
        public Task<string> QueryIdentityAsync(CancellationToken ct = default) => Task.FromResult("it8702p");
        public Task<string> QueryErrorAsync(CancellationToken ct = default) => Task.FromResult("0,\"No error\"");
    }

    private sealed class FixedPowerSupply : IPowerSupply
    {
        public int OutputOnCount { get; private set; }
        public bool IsConnected => true;
        public string DisplayName => "fixed power";
        public event EventHandler<bool>? ConnectionChanged;
        public Task<bool> ConnectAsync(CancellationToken ct = default) => Task.FromResult(true);
        public Task DisconnectAsync() => Task.CompletedTask;
        public Task SetVoltageAsync(double volts, CancellationToken ct = default) => throw new InvalidOperationException();
        public Task SetCurrentLimitAsync(double amps, CancellationToken ct = default) => throw new InvalidOperationException();
        public Task OutputAsync(bool on, CancellationToken ct = default)
        {
            if (on) OutputOnCount++;
            return Task.CompletedTask;
        }
        public Task<bool> GetOutputStateAsync(CancellationToken ct = default) => Task.FromResult(true);
        public Task<(double volts, double amps)> ReadAsync(CancellationToken ct = default) => Task.FromResult((30.0, 1.0));
        public Task<string> QueryIdentityAsync(CancellationToken ct = default) => Task.FromResult("fixed");
        public Task<string> QueryErrorAsync(CancellationToken ct = default) => Task.FromResult("0,\"No error\"");
    }

    private sealed class ForbiddenPowerSupply : IPowerSupply
    {
        public bool IsConnected => false;
        public string DisplayName => "forbidden";
        public event EventHandler<bool>? ConnectionChanged;
        public Task<bool> ConnectAsync(CancellationToken ct = default) => throw new InvalidOperationException();
        public Task DisconnectAsync() => Task.CompletedTask;
        public Task SetVoltageAsync(double volts, CancellationToken ct = default) => throw new InvalidOperationException();
        public Task SetCurrentLimitAsync(double amps, CancellationToken ct = default) => throw new InvalidOperationException();
        public Task OutputAsync(bool on, CancellationToken ct = default) => throw new InvalidOperationException();
        public Task<bool> GetOutputStateAsync(CancellationToken ct = default) => throw new InvalidOperationException();
        public Task<(double volts, double amps)> ReadAsync(CancellationToken ct = default) => throw new InvalidOperationException();
        public Task<string> QueryIdentityAsync(CancellationToken ct = default) => throw new InvalidOperationException();
        public Task<string> QueryErrorAsync(CancellationToken ct = default) => throw new InvalidOperationException();
    }

    private sealed class ForbiddenLoad : ILoad
    {
        public bool IsConnected => false;
        public string DisplayName => "forbidden";
        public event EventHandler<bool>? ConnectionChanged;
        public Task<bool> ConnectAsync(CancellationToken ct = default) => throw new InvalidOperationException();
        public Task DisconnectAsync() => Task.CompletedTask;
        public Task SetModeAsync(LoadMode mode, CancellationToken ct = default) => throw new InvalidOperationException();
        public Task SetValueAsync(double value, CancellationToken ct = default) => throw new InvalidOperationException();
        public Task ResetAsync(CancellationToken ct = default) => throw new InvalidOperationException();
        public Task InputAsync(bool on, CancellationToken ct = default) => throw new InvalidOperationException();
        public Task<bool> GetInputStateAsync(CancellationToken ct = default) => throw new InvalidOperationException();
        public Task<(double volts, double amps)> ReadAsync(CancellationToken ct = default) => throw new InvalidOperationException();
        public Task<PowerReading> ReadPowerAsync(CancellationToken ct = default) => throw new InvalidOperationException();
        public Task<string> QueryIdentityAsync(CancellationToken ct = default) => throw new InvalidOperationException();
        public Task<string> QueryErrorAsync(CancellationToken ct = default) => throw new InvalidOperationException();
    }
}
#pragma warning restore CS0067