// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
#nullable disable
 
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using Microsoft.CodeAnalysis.Diagnostics.Analyzers.NamingStyles;
using Microsoft.CodeAnalysis.Notification;
using Microsoft.VisualStudio.LanguageServices.Implementation.Utilities;
 
namespace Microsoft.VisualStudio.LanguageServices.Implementation.Options.Style.NamingPreferences;
 
internal sealed class ManageNamingStylesDialogViewModel : AbstractNotifyPropertyChanged, IManageNamingStylesInfoDialogViewModel
{
    private readonly INotificationService _notificationService;
 
    public ObservableCollection<INamingStylesInfoDialogViewModel> Items { get; set; }
 
    public string DialogTitle => ServicesVSResources.Manage_naming_styles;
 
    public ManageNamingStylesDialogViewModel(
        ObservableCollection<MutableNamingStyle> namingStyles,
        List<NamingStyleOptionPageViewModel.NamingRuleViewModel> namingRules,
        INotificationService notificationService)
    {
        _notificationService = notificationService;
 
        Items = [.. namingStyles.Select(style => new NamingStyleViewModel(
            style.Clone(),
            !namingRules.Any(rule => rule.SelectedStyle?.ID == style.ID),
            notificationService))];
    }
 
    internal void RemoveNamingStyle(NamingStyleViewModel namingStyle)
        => Items.Remove(namingStyle);
 
    public void AddItem()
    {
        var style = new MutableNamingStyle();
        var viewModel = new NamingStyleViewModel(style, canBeDeleted: true, notificationService: _notificationService);
        var dialog = new NamingStyleDialog(viewModel);
 
        if (dialog.ShowModal().Value == true)
        {
            Items.Add(viewModel);
        }
    }
 
    public void RemoveItem(INamingStylesInfoDialogViewModel item)
        => Items.Remove(item);
 
    public void EditItem(INamingStylesInfoDialogViewModel item)
    {
        var context = (NamingStyleViewModel)item;
 
        var style = context.GetNamingStyle();
        var viewModel = new NamingStyleViewModel(style, context.CanBeDeleted, notificationService: _notificationService);
        var dialog = new NamingStyleDialog(viewModel);
 
        if (dialog.ShowModal().Value == true)
        {
            context.ItemName = viewModel.ItemName;
            context.RequiredPrefix = viewModel.RequiredPrefix;
            context.RequiredSuffix = viewModel.RequiredSuffix;
            context.WordSeparator = viewModel.WordSeparator;
            context.CapitalizationSchemeIndex = viewModel.CapitalizationSchemeIndex;
        }
    }
}