namespace Evergreen.Health.Application.Health.Sleep;

public sealed record GuidanceClip(string Key, string Title, string? Url, double? DurationSeconds)
{
    public bool Playable => DurationSeconds is > 0 && double.IsFinite(DurationSeconds.Value) &&
        Uri.TryCreate(Url, UriKind.Absolute, out var uri) && uri.Scheme is "http" or "https";
}

/// <summary>假数据仅是目录元数据，没有伪造 OSS 地址或播放成功状态。</summary>
public sealed class GuidanceCatalog
{
    public GuidanceCatalog(GuidanceClip? initialRelaxation = null)
        => InitialRelaxation = initialRelaxation ?? new("initial-relaxation", "首次上床放松引导（待上传）", null, null);
    public GuidanceClip InitialRelaxation { get; }
    public GuidanceClip AnomalyReminder { get; } = new("anomaly-reminder", "睡眠状态语音提醒（预留）", null, null);
}

public sealed record GuidancePlaybackResult(bool Completed, string Message);
public interface IGuidancePlayer
{
    Task<GuidancePlaybackResult> PlayAsync(GuidanceClip clip, int volumePercent, CancellationToken cancellationToken);
}

public sealed class ReservedGuidancePlayer : IGuidancePlayer
{
    public Task<GuidancePlaybackResult> PlayAsync(GuidanceClip clip, int volumePercent, CancellationToken cancellationToken)
    {
        cancellationToken.ThrowIfCancellationRequested();
        return Task.FromResult(new GuidancePlaybackResult(false, "引导音频尚未接入，本版不执行播放"));
    }
}