using Evergreen.Health.Application.Health.Devices.Contracts;
using Evergreen.Health.Application.Health.Integrations.HomeAssistant;
using Microsoft.Extensions.Options;

namespace Evergreen.Health.Application.Health.Scenes;

public interface IDeviceActionSafetyRule
{
    Task ValidateAsync(DeviceCommand command, CancellationToken cancellationToken);
    void Accepted(DeviceCommand command, DateTimeOffset now);
}

public sealed class SceneLightSafetyState
{
    private readonly object _lock = new();
    private DateTimeOffset? _offAt;
    public DateTimeOffset? OffAt { get { lock (_lock) return _offAt; } }
    public void MarkOff(DateTimeOffset now) { lock (_lock) _offAt = now; }
    public void MarkOn() { lock (_lock) _offAt = null; }
}

/// <summary>记录主灯的已发送开关状态，供晨起渐亮处理滞后的云端回读。</summary>
public sealed class PrimaryLightStateRule(SceneLightSafetyState state) : IDeviceActionSafetyRule
{
    public Task ValidateAsync(DeviceCommand command, CancellationToken cancellationToken) => Task.CompletedTask;
    public void Accepted(DeviceCommand command, DateTimeOffset now)
    {
        if (command.Intent == DeviceCommandIntent.TurnRelaxationLightOff) state.MarkOff(now);
        else if (command.Intent == DeviceCommandIntent.TurnRelaxationLightOn) state.MarkOn();
    }
}