using Evergreen.Health.Application.Health.Devices.Environment;
using Evergreen.Health.Application.Health.Integrations.HomeAssistant;
using Evergreen.Health.Application.Health.Policies;
using Evergreen.Health.Application.Health.Sleep;
using Microsoft.Extensions.Options;

namespace Evergreen.Health.Application.Health.Devices.Climate;

public sealed class BedPresenceClimatePreview(IHomeAssistantGateway gateway, IndoorEnvironmentReader environment,
    IOptions<HomeAssistantOptions> options) : IBedPresenceAction
{
    private HomeAssistantOptions Configuration => options.Value;

    public string Key => "climate-temperature-preview";
    public string Description => "按室温判断空调模式";
    public bool PreviewOnly => true;
    public string ConditionLabel => $"室温高于 {RecommendedRoomRange.Default.Maximum}℃ 时计划制冷，低于 {RecommendedRoomRange.Default.Minimum}℃ 时计划制热。";

    public bool SupportsTarget(string entityId) => Configuration.Enabled &&
        entityId?.StartsWith("climate.", StringComparison.Ordinal) == true && entityId == Configuration.Entities.Climate &&
        Configuration.Entities.Temperature?.StartsWith("sensor.", StringComparison.Ordinal) == true;

    public async Task<string> ExecuteAsync(string entityId, CancellationToken token)
    {
        if (!SupportsTarget(entityId)) return "target-not-configured";
        IReadOnlyList<HomeAssistantState> states;
        try { states = await gateway.GetStatesAsync(token); }
        catch (Exception error) when (error is not OperationCanceledException)
        {
            return "preview-temperature-unavailable";
        }

        var sample = environment.Read(states);
        return RoomTemperaturePolicy.Evaluate(sample, RecommendedRoomRange.Default).Mode switch
        {
            "cool" => "preview-climate-cool",
            "heat" => "preview-climate-heat",
            "off" => "preview-temperature-within-range",
            _ => sample.Issue switch
            {
                IndoorTemperatureIssue.Stale => "preview-temperature-stale",
                IndoorTemperatureIssue.Invalid => "preview-temperature-invalid",
                _ => "preview-temperature-unavailable"
            }
        };
    }
}