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.Lighting;

public sealed class LightingModule : HealthDeviceModule
{
    private readonly HomeAssistantEntityOptions _entities;
    private readonly ILightTransitionRuntime _transition;
    private readonly LightOffDispatcher _lightOff;
    public LightingModule(DeviceActionRunner runner, IOptions<HomeAssistantOptions> options,
        ILightTransitionRuntime transition, LightOffDispatcher lightOff) : base(runner)
    {
        _entities = options.Value.Entities; _transition = transition; _lightOff = lightOff;
        Parameters =
        [
            new("brightness", PrimaryEntityId, value =>
            {
                var brightness = DeviceValues.Integer(value, 0, 100, "灯光亮度");
                return new("设置灯光亮度", PrimaryEntityId, "light", brightness == 0 ? "turn_off" : "turn_on",
                    brightness == 0 ? null : new Dictionary<string, object?> { ["brightness_pct"] = brightness })
                    { Intent = brightness == 0 ? DeviceCommandIntent.TurnRelaxationLightOff : DeviceCommandIntent.TurnRelaxationLightOn };
            }, "灯光亮度", 0, 100),
            new("color_temp", PrimaryEntityId, value => new("设置灯光色温", PrimaryEntityId, "light", "turn_on",
                new Dictionary<string, object?> { ["color_temp_kelvin"] = DeviceValues.Integer(value, 2200, 5000, "灯光色温") })
                { Intent = DeviceCommandIntent.TurnRelaxationLightOn },
                "灯光色温", 2200, 5000)
        ];
    }
    public override string Key => "lighting";
    public override string Category => nameof(HealthDeviceCategory.Lighting);
    public override string DisplayName => "卧室灯光";
    public override string PrimaryEntityId => _entities.AmbientLight;
    public override IReadOnlyList<DeviceParameterDefinition> Parameters { get; }

    public override async Task ExecuteParameterAsync(DeviceCommand command, CancellationToken cancellationToken)
    {
        // 标准手动面板复用本灯的专属安全钩子；其他灯不会触发主灯关灯事件。
        command = command with { Intent = command.Service == "turn_off"
            ? DeviceCommandIntent.TurnRelaxationLightOff : DeviceCommandIntent.TurnRelaxationLightOn };
        await _transition.CancelAsync(cancellationToken);
        await Runner.SendAsync(command, cancellationToken);
        if (command.Service == "turn_off") await _lightOff.NotifyAsync(cancellationToken);
        if (command.ExpectedState is not null) await Runner.VerifyParameterAsync(command, cancellationToken);
    }

    public override async Task SetPowerAsync(bool turnOn, CancellationToken cancellationToken)
    {
        if (turnOn) { await _transition.StartSleepAsync(2700, cancellationToken); return; }
        await _transition.CancelAsync(cancellationToken);
        await Runner.SendAsync(new("关闭助眠灯光", PrimaryEntityId, "light", "turn_off")
            { Intent = DeviceCommandIntent.TurnRelaxationLightOff }, cancellationToken);
        await _lightOff.NotifyAsync(cancellationToken);
    }

    public override async Task ExecuteSleepAsync(DeviceSceneContext context, PersonalizedSceneConfig config,
        string constitutionCode, CancellationToken cancellationToken)
    {
        if (string.IsNullOrWhiteSpace(PrimaryEntityId) || !context.States.TryGetValue(PrimaryEntityId, out var state) ||
            !DeviceActionRunner.IsAvailable(state))
        {
            context.Results.Add(new() { Name = "开启助眠渐暗灯光", EntityId = PrimaryEntityId,
                Status = "Skipped", Message = "灯光未配置或离线" }); return;
        }
        await context.ExternalAsync("开启助眠渐暗灯光", PrimaryEntityId,
            async token => { await _transition.StartSleepAsync(config.LightColorTemperatureKelvin, token); }, cancellationToken);
    }

    public override IEnumerable<DeviceCommand> GetShutdownCommands()
        => [new("关闭助眠灯光", PrimaryEntityId, "light", "turn_off", ExpectedState: "off")
            { Intent = DeviceCommandIntent.TurnRelaxationLightOff }];

    public override HomeAssistantScenePresetItem? BuildPreview(PersonalizedSceneConfig config, string constitutionCode)
        => string.IsNullOrWhiteSpace(PrimaryEntityId) ? null : Preview("开启助眠渐暗灯光",
            $"从50%开始，每5秒降低1%，最终关灯 · 色温 {config.LightColorTemperatureKelvin}K",
            new() { ["brightness"] = "50%→关闭", ["color_temp"] = $"{config.LightColorTemperatureKelvin}K" });
}