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;
using Microsoft.Extensions.Options;

namespace Evergreen.Health.Application.Health.Devices.Curtain;

/// <summary>窗帘开合不是电源开关；本版只提供单独手动控制，不擅自加入舒睡/全关。</summary>
public sealed class CurtainModule : HealthDeviceModule
{
    private readonly string _entityId;
    public CurtainModule(DeviceActionRunner runner, IOptions<HomeAssistantOptions> options) : base(runner)
    {
        _entityId = options.Value.Entities.Curtain;
        Parameters =
        [
            new("curtain_action", _entityId, BuildAction, "窗帘动作", Options: ["open", "stop", "close"]),
            new("curtain_position", _entityId, BuildPosition, "窗帘开度", 0, 100)
        ];
    }
    public override string Key => "curtain";
    public override string Category => nameof(HealthDeviceCategory.Curtain);
    public override string DisplayName => "窗帘";
    public override string PrimaryEntityId => _entityId;
    public override IReadOnlyList<DeviceParameterDefinition> Parameters { get; }

    private DeviceCommand BuildAction(object? value)
    {
        var action = DeviceValues.Choice(value, ["open", "stop", "close"], "窗帘动作");
        var (service, feature, label) = action switch
        {
            "open" => ("open_cover", 1, "打开窗帘"), "close" => ("close_cover", 2, "关闭窗帘"),
            _ => ("stop_cover", 8, "停止窗帘")
        };
        return new(label, _entityId, "cover", service)
        {
            ValidateCurrentState = state => ValidateFeature(state, feature, label),
            RetryOnVerificationMismatch = false
        };
    }

    private DeviceCommand BuildPosition(object? value)
    {
        var position = DeviceValues.Integer(value, 0, 100, "窗帘开度");
        return new("设置窗帘开度", _entityId, "cover", "set_cover_position",
            new Dictionary<string, object?> { ["position"] = position })
        {
            ValidateCurrentState = state => ValidateFeature(state, 4, "设置窗帘开度"),
            RetryOnVerificationMismatch = false
        };
    }

    private void ValidateFeature(HomeAssistantState state, int feature, string label)
    {
        if (!_entityId.StartsWith("cover.", StringComparison.OrdinalIgnoreCase) ||
            !string.Equals(state.EntityId, _entityId, StringComparison.OrdinalIgnoreCase))
            throw new InvalidOperationException("窗帘主控实体绑定无效");
        var features = state.GetDoubleAttribute("supported_features");
        if (features is null || features < 0 || features > int.MaxValue || features != Math.Truncate(features.Value) ||
            (((int)features.Value & feature) != feature))
            throw new InvalidOperationException($"该窗帘未声明支持{label}");
    }

    public override Task SetPowerAsync(bool turnOn, CancellationToken cancellationToken)
        => throw new InvalidOperationException("窗帘没有电源开关，请使用打开、停止或关闭控制");

    public override Task ExecuteSleepAsync(DeviceSceneContext context, PersonalizedSceneConfig config,
        string constitutionCode, CancellationToken cancellationToken)
    {
        cancellationToken.ThrowIfCancellationRequested();
        context.Results.Add(new() { Name = "窗帘场景联动", EntityId = _entityId, Status = "Skipped",
            Message = string.IsNullOrWhiteSpace(_entityId) ? "窗帘实体尚未配置" : "本版窗帘只支持手动控制，舒睡不自动改变开合位置" });
        return Task.CompletedTask;
    }
}