using System.Collections.ObjectModel;
using System.IO;
using System.Text.Json;
using System.Text.Json.Serialization;
using JetBrains.Annotations;
using Livia.Models.Data;
using Livia.ViewModels;

namespace iBrain.ViewModels;

public readonly record struct FeatureDataDisplay
{
    public string Name { get; init; }
    public double Value { get; init; }
    public string Reference { get; init; }
    public string Note { get; init; }
    public int ColorCode { get; init; }
}

public record struct FeatureData
{
    [UsedImplicitly, JsonPropertyName("featureChineseName")]
    public string FeatureChineseName { get; init; }

    [UsedImplicitly, JsonPropertyName("featureValue")]
    public double FeatureValue { get; init; }

    [UsedImplicitly, JsonPropertyName("remark")]
    public int Trend { get; init; }

    [UsedImplicitly, JsonPropertyName("range")]
    public string Range { get; init; }
}


public class FeatureDataGridControlViewModel : ILiviaModuleViewModel
{
    public ObservableCollection<FeatureDataDisplay> RegionsCollection { get; } = [];
    public string LoadPath { get; set; } = string.Empty;

    public async Task LoadData(DataBlock dataBlock)
    {
        if (string.IsNullOrEmpty(LoadPath))
            return;

        RegionsCollection.Clear();

        string file = Path.Combine(dataBlock.ResultPath, LoadPath);
        await using FileStream openStream = File.OpenRead(file);
        List<FeatureData>? featureList = await JsonSerializer.DeserializeAsync<List<FeatureData>>(openStream);

        if (featureList == null)
        {
            return;
        }

        foreach (FeatureData data in featureList)
        {

            FeatureDataDisplay featureDataDisplay = new()
            {
                Name = data.FeatureChineseName,
                Value = data.FeatureValue,
                Reference = data.Range,
                Note = data.Trend switch
                {
                    -1 => "↓",
                    1 => "↑",
                    _ => "-"
                }, 
                ColorCode = data.Trend
            };

            RegionsCollection.Add(featureDataDisplay);
        }

    }

    public void Init()
    {
    }
}