// 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.
 
using System.Xml.Linq;
using Microsoft.CodeAnalysis.CodeStyle;
using Microsoft.CodeAnalysis.Options;
 
namespace Microsoft.VisualStudio.LanguageServices.Implementation.Options;
 
public abstract class AbstractAutomationObject
{
    private readonly ILegacyGlobalOptionService _legacyGlobalOptions;
    private readonly string _languageName;
 
    internal AbstractAutomationObject(ILegacyGlobalOptionService legacyGlobalOptions, string languageName)
        => (_legacyGlobalOptions, _languageName) = (legacyGlobalOptions, languageName);
 
    private protected T GetOption<T>(PerLanguageOption2<T> option)
        => _legacyGlobalOptions.GlobalOptions.GetOption(option, _languageName);
 
    private protected void SetOption<T>(PerLanguageOption2<T> option, T value)
    {
        _legacyGlobalOptions.GlobalOptions.SetGlobalOption(option, _languageName, value);
 
        // May be updating an internally-defined public option stored in solution snapshots:
        _legacyGlobalOptions.UpdateRegisteredWorkspaces();
    }
 
    private protected T GetOption<T>(Option2<T> option)
        => _legacyGlobalOptions.GlobalOptions.GetOption(option);
 
    private protected void SetOption<T>(Option2<T> option, T value)
    {
        _legacyGlobalOptions.GlobalOptions.SetGlobalOption(option, value);
 
        // May be updating an internally-defined public option stored in solution snapshots:
        _legacyGlobalOptions.UpdateRegisteredWorkspaces();
    }
 
    private protected int GetBooleanOption(PerLanguageOption2<bool?> key)
        => NullableBooleanToInteger(GetOption(key));
 
    private protected void SetBooleanOption(PerLanguageOption2<bool?> key, int value)
        => SetOption(key, IntegerToNullableBoolean(value));
 
    private protected int GetBooleanOption(Option2<bool?> key)
        => NullableBooleanToInteger(GetOption(key));
 
    private protected void SetBooleanOption(Option2<bool?> key, int value)
        => SetOption(key, IntegerToNullableBoolean(value));
 
    private protected string GetXmlOption<T>(Option2<CodeStyleOption2<T>> option)
        => GetOption(option).ToXElement().ToString();
 
    private protected string GetXmlOption<T>(PerLanguageOption2<CodeStyleOption2<T>> option)
        => GetOption(option).ToXElement().ToString();
 
    private protected void SetXmlOption<T>(Option2<CodeStyleOption2<T>> option, string value)
    {
        var convertedValue = CodeStyleOption2<T>.FromXElement(XElement.Parse(value));
        SetOption(option, convertedValue);
    }
 
    private protected void SetXmlOption<T>(PerLanguageOption2<CodeStyleOption2<T>> option, string value)
    {
        var convertedValue = CodeStyleOption2<T>.FromXElement(XElement.Parse(value));
        SetOption(option, convertedValue);
    }
 
    private static int NullableBooleanToInteger(bool? value)
    {
        if (!value.HasValue)
        {
            return -1;
        }
 
        return value.Value ? 1 : 0;
    }
 
    private static bool? IntegerToNullableBoolean(int value)
        => (value < 0) ? null : (value > 0);
}