using System.Collections.ObjectModel;

using CommunityToolkit.Mvvm.ComponentModel;

using Avalonia;

using LiveChartsCore;
using LiveChartsCore.Defaults;
using LiveChartsCore.SkiaSharpView;

using Microsoft.Extensions.Logging;

namespace GSS2.UI.Core.ViewModels;

public partial class ResourceBarViewModel : ViewModelBase
{
    private readonly ILogger<ResourceBarViewModel> _logger;

    [ObservableProperty] private ObservableCollection<ISeries> _series;
    [ObservableProperty] private Rect _bounds;

    public ResourceBarViewModel(ILogger<ResourceBarViewModel> logger, IEnumerable<ISeries> series)
    {
        _logger = logger;
        _logger.LogInformation("Initialization");

        Series = new ObservableCollection<ISeries>(series);

        _logger.LogInformation("Initialized");
    }

    partial void OnBoundsChanged(Rect value)
    {
        var size = Math.Min(value.Width, value.Height);

        var textSize = size switch
        {
            < 100 => 8,
            < 150 => 10,
            < 175 => 12,
            _ => 14
        };
        var innerRadius = size switch
        {
            < 50 => size / 2,
            < 120 => size / 3,
            _ => size / 4,
        };

        foreach (var series in Series.OfType<PieSeries<ObservableValue>>())
        {
            series.DataLabelsSize = textSize;
            series.InnerRadius = innerRadius;
            series.OuterRadiusOffset = 0;
            series.RelativeOuterRadius = 1;
        }
    }

    public void UpdateValue(double value, double maxValue)
    {
        if (Series.Count() == 2 &&
            Series.Skip(0).First().Values is ObservableCollection<ObservableValue> value1 &&
            Series.Skip(1).First().Values is ObservableCollection<ObservableValue> value2)
        {
            value1.First().Value = value > maxValue ? maxValue : value;
            value2.First().Value = value > maxValue ? 0 : maxValue - value;
        }
    }
}