using Evergreen.Health.Application.Health.Devices.Contracts;
using Evergreen.Health.Application.Health.Integrations.HomeAssistant;
using Evergreen.Health.Application.Health.Models;
using Evergreen.Health.Application.Health.Scenes;

namespace Evergreen.Health.Application.Health.Devices.Lighting;

/// <summary>额外场景灯复用标准参数和单灯渐变；型号专属模式通过配置选择，不套用原灯的关灯事件/唤醒钩子。</summary>
public sealed class ConfiguredSleepLightModule : HealthDeviceModule
{
    private readonly SceneLightOptions _light;
    private readonly ILightTransitionRuntime _transition;
    public ConfiguredSleepLightModule(DeviceActionRunner runner, SceneLightOptions light, ILightTransitionRuntime transition) : base(runner)
        => (_light, _transition) = (light, transition);
    public override string Key => _light.Key;
    public override string Category => nameof(HealthDeviceCategory.Lighting);
    public override string DisplayName => _light.Name;
    public override string PrimaryEntityId => _light.EntityId;
    public override IReadOnlyList<DeviceParameterDefinition> Parameters => [];

    public override async Task ExecuteParameterAsync(DeviceCommand command, CancellationToken token)
    {
        await _transition.CancelAsync(token);
        await base.ExecuteParameterAsync(command, token);
    }
    public override async Task SetPowerAsync(bool turnOn, CancellationToken token)
    {
        if (turnOn && _light.StartSleepOnManualPowerOn)
        {
            await _transition.StartSleepAsync(2700, token);
            return;
        }
        await _transition.CancelAsync(token);
        if (turnOn)
        {
            await base.SetPowerAsync(true, token);
            return;
        }
        var command = GetShutdownCommands().Single();
        await Runner.SendAsync(command, token);
        await Runner.VerifyParameterAsync(command, token);
    }
    public override async Task ExecuteSleepAsync(DeviceSceneContext context, PersonalizedSceneConfig config,
        string constitutionCode, CancellationToken token)
    {
        if (!context.States.TryGetValue(PrimaryEntityId, out var state) || !DeviceActionRunner.IsAvailable(state))
        {
            context.Results.Add(new() { Name = $"开启{DisplayName}助眠渐暗", EntityId = PrimaryEntityId,
                Status = "Skipped", Message = "场景灯当前离线或不可用" });
            return;
        }
        await context.ExternalAsync($"开启{DisplayName}助眠渐暗", PrimaryEntityId,
            async cancellation => { await _transition.StartSleepAsync(config.LightColorTemperatureKelvin, cancellation); }, token);
    }
    public override IEnumerable<DeviceCommand> GetShutdownCommands()
        => [new($"关闭{DisplayName}", PrimaryEntityId, "light", "turn_off", ExpectedState: "off")];
    public override HomeAssistantScenePresetItem? BuildPreview(PersonalizedSceneConfig config, string constitutionCode)
        => Preview("开启助眠渐暗灯光", $"{_light.SleepEffect ?? "助眠渐暗"} · 从50%开始，每5秒降低1%，最终关灯",
            new() { ["brightness"] = "50%→关闭", ["effect"] = _light.SleepEffect });
}