using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;

using UnityEngine;
using UnityEngine.UIElements;

public enum NoticeCategory {
    Initial,
    Slower,
    Faster,
    Fastest,
}

public class TimingNotice {
    double Seconds;
    NoticeCategory Category = NoticeCategory.Initial;

    public static TimingNotice Compare(double seconds, double? pbSeconds = null, double? lrSeconds = null) => lrSeconds switch {
        double lr when seconds < lr => new TimingNotice { Seconds =  Math.Abs(lr - seconds), Category = NoticeCategory.Fastest },
        _ => pbSeconds switch {
            double pb when seconds < pb => new TimingNotice { Seconds = Math.Abs(pb - seconds), Category = NoticeCategory.Faster },
            double pb when seconds >= pb => new TimingNotice { Seconds = Math.Abs(pb - seconds), Category = NoticeCategory.Slower },
            _ => new TimingNotice { Seconds = seconds, Category = NoticeCategory.Initial },
        }
    };

    public Label ToLabel() {
        Label l = Category switch {
            NoticeCategory.Initial =>   new Label($"{TimeSpan.FromSeconds(Seconds):m\\:ss\\.fff}"),
            NoticeCategory.Slower =>    new Label($"+{Seconds:0.000}"),
            NoticeCategory.Faster =>    new Label($"-{Seconds:0.000}"),
            NoticeCategory.Fastest =>   new Label($"-{Seconds:0.000}"),
            _ =>                        new Label($"-{Seconds:0.000}"),
        };

        string colourClass = Category switch {
            NoticeCategory.Initial =>   "",
            NoticeCategory.Slower =>    "yellow",
            NoticeCategory.Faster =>    "green",
            NoticeCategory.Fastest =>   "purple",
            _ => "",
        };

        l.AddToClassList(colourClass);
        return l;
    }
}

public enum DiffColour {
    Green,
    Purple,
    White,
    Yellow,
}

public class SectorTime {
    public int Sector;
    public double Seconds;
    public override string ToString() => $"{Seconds:0.000}";
}

public class Lap {
    public string Map;
    public List<SectorTime> Sectors;

    // 0:1:39
    public override string ToString() {
        return $"{TimeSpan.FromSeconds(TotalTime):m\\:ss\\.fff}";
    }

    public double TotalTime =>  Sectors.Sum(s => s.Seconds);
}