using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using CommunityToolkit.Mvvm.ComponentModel;
using StabilityMatrix.Core.Models.Api;

namespace StabilityMatrix.Avalonia.ViewModels.Dialogs;

public partial class ModelVersionViewModel : ObservableObject
{
    private readonly HashSet<string> installedModelHashes;

    [ObservableProperty]
    private CivitModelVersion modelVersion;

    [ObservableProperty]
    private ObservableCollection<CivitFileViewModel> civitFileViewModels;

    [ObservableProperty]
    private bool isInstalled;

    public ModelVersionViewModel(HashSet<string> installedModelHashes, CivitModelVersion modelVersion)
    {
        this.installedModelHashes = installedModelHashes;
        ModelVersion = modelVersion;

        IsInstalled =
            ModelVersion.Files?.Any(
                file =>
                    file is { Type: CivitFileType.Model, Hashes.BLAKE3: not null }
                    && installedModelHashes.Contains(file.Hashes.BLAKE3)
            ) ?? false;

        CivitFileViewModels = new ObservableCollection<CivitFileViewModel>(
            ModelVersion.Files?.Select(file => new CivitFileViewModel(installedModelHashes, file))
                ?? new List<CivitFileViewModel>()
        );
    }

    public void RefreshInstallStatus()
    {
        IsInstalled =
            ModelVersion.Files?.Any(
                file =>
                    file is { Type: CivitFileType.Model, Hashes.BLAKE3: not null }
                    && installedModelHashes.Contains(file.Hashes.BLAKE3)
            ) ?? false;
    }
}