// 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.Linq;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CodeStyle;
using Microsoft.CodeAnalysis.Options;
using Microsoft.VisualStudio.Imaging;
using Microsoft.VisualStudio.LanguageServices.Implementation.Utilities;
 
namespace Microsoft.VisualStudio.LanguageServices.Implementation.Options;
 
/// <summary>
/// This class acts as a base for any view model that  binds to the codestyle options UI.
/// </summary>
/// <remarks>
/// This supports databinding of: 
/// Description
/// list of CodeStyle preferences
/// list of Notification preferences 
/// selected code style preference
/// selected notification preference
/// plus, styling for visual elements.
/// </remarks>
internal abstract class AbstractCodeStyleOptionViewModel : AbstractNotifyPropertyChanged
{
    protected AbstractOptionPreviewViewModel Info { get; }
    public IOption2 Option { get; }
 
    public string Description { get; set; }
    public double DescriptionMargin { get; set; } = 12d;
    public string GroupName { get; set; }
    public string GroupNameAndDescription { get; set; }
    public List<CodeStylePreference> Preferences { get; set; }
    public List<NotificationOptionViewModel> NotificationPreferences { get; set; }
 
    public abstract CodeStylePreference SelectedPreference { get; set; }
    public abstract string GetPreview();
 
    public virtual NotificationOptionViewModel SelectedNotificationPreference
    {
        get { return NotificationPreferences.First(); }
        set { }
    }
 
    public AbstractCodeStyleOptionViewModel(
        IOption2 option,
        string description,
        AbstractOptionPreviewViewModel info,
        string groupName,
        List<CodeStylePreference> preferences = null,
        List<NotificationOptionViewModel> notificationPreferences = null)
    {
        Info = info;
        Option = option;
        Description = description;
        Preferences = preferences ?? GetDefaultPreferences();
        NotificationPreferences = notificationPreferences ?? GetDefaultNotifications();
        GroupName = groupName;
        GroupNameAndDescription = $"{groupName}, {description}";
    }
 
    private static List<NotificationOptionViewModel> GetDefaultNotifications()
    {
        return
        [
            new NotificationOptionViewModel(NotificationOption2.Silent, KnownMonikers.None),
            new NotificationOptionViewModel(NotificationOption2.Suggestion, KnownMonikers.StatusInformation),
            new NotificationOptionViewModel(NotificationOption2.Warning, KnownMonikers.StatusWarning),
            new NotificationOptionViewModel(NotificationOption2.Error, KnownMonikers.StatusError)
        ];
    }
 
    private static List<CodeStylePreference> GetDefaultPreferences()
    {
        return
        [
            new CodeStylePreference(EditorFeaturesResources.Yes, isChecked: true),
            new CodeStylePreference(EditorFeaturesResources.No, isChecked: false),
        ];
    }
}