namespace SSPCTester.Devices.Interfaces;

/// <summary>
/// 可编程负载（IT8733P / IT8702P）的工作模式。
/// </summary>
public enum LoadMode
{
    /// <summary>恒流。</summary>
    CC,
    /// <summary>恒压。</summary>
    CV,
    /// <summary>恒阻。</summary>
    CR,
    /// <summary>恒功率。</summary>
    CP
}

public readonly record struct PowerReading(double Volts, double Amps, double Watts);

/// <summary>
/// 可编程负载抽象接口。
/// </summary>
public interface ILoad : IDeviceConnection
{
    /// <summary>切换工作模式。</summary>
    Task SetModeAsync(LoadMode mode, CancellationToken ct = default);

    /// <summary>设定目标值（含义取决于当前模式：A / V / Ω / W）。</summary>
    Task SetValueAsync(double value, CancellationToken ct = default);

    /// <summary>开启 / 关闭负载输入。</summary>
    Task InputAsync(bool on, CancellationToken ct = default);

    /// <summary>读取实际电压、电流。</summary>
    Task<(double volts, double amps)> ReadAsync(CancellationToken ct = default);

    Task<PowerReading> ReadPowerAsync(CancellationToken ct = default);

    Task<string> QueryIdentityAsync(CancellationToken ct = default);
}