using Evergreen.Health.Application.Health.Integrations.HomeAssistant;
using Evergreen.Health.Application.Health.Scenes;
using Evergreen.Health.Application.Health.Sleep;
using Microsoft.Extensions.Options;

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

public sealed class BedPresenceCurtainCloseAction(CurtainModule curtain, DeviceActionRunner runner,
    IOptions<HomeAssistantOptions> options) : IBedPresenceAction
{
    public string Key => "curtain-close";
    public string Description => "关闭窗帘";
    public TimeSpan ExecutionTimeout => TimeSpan.FromSeconds(55);

    public bool SupportsTarget(string entityId) => options.Value.Enabled &&
        entityId?.StartsWith("cover.", StringComparison.Ordinal) == true && entityId == curtain.PrimaryEntityId;

    public async Task<string> ExecuteAsync(string entityId, CancellationToken token)
    {
        if (!SupportsTarget(entityId)) return "target-not-configured";
        var state = await runner.ReadAvailableStateAsync(entityId, token);
        if (state.State == "closed") return "already-closed";
        if (state.State == "closing") return "already-closing";
        if (state.State != "open") return "state-not-open";

        var close = curtain.BuildParameterCommand("curtain_action", "close");
        var command = close with
        {
            ExpectedState = "closed",
            ValidateCurrentState = current =>
            {
                close.ValidateCurrentState?.Invoke(current);
                if (current.State != "open") throw new InvalidOperationException("窗帘状态已改变，跳过关帘");
            }
        };
        await runner.SendAsync(command, token);
        try
        {
            // 机械行程需要较长回读时间。沿用窗帘命令的只读回读配置，失败不重发关帘。
            await runner.VerifyParameterAsync(command, token, verificationAttempts: 20);
            return "readback-confirmed";
        }
        catch (InvalidOperationException)
        {
            return "sent-readback-unconfirmed";
        }
    }
}