// 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;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using Microsoft.CodeAnalysis.CodeStyle;
using Microsoft.CodeAnalysis.Diagnostics;
using Microsoft.CodeAnalysis.Editor.EditorConfigSettings.Data;
using Microsoft.CodeAnalysis.Test.Utilities;
using Microsoft.CodeAnalysis.Options;
using Xunit;
 
namespace Microsoft.CodeAnalysis.Editor.UnitTests.EditorConfigSettings.Data;
 
[UseExportProvider]
public static class CodeStyleSettingsTest
{
    private static IGlobalOptionService GetGlobalOptions(Workspace workspace)
        => workspace.Services.SolutionServices.ExportProvider.GetExportedValue<IGlobalOptionService>();
 
    [Theory]
    [InlineData(true)]
    [InlineData(false)]
    public static void CodeStyleSettingBoolFactory(bool defaultValue)
    {
        using var workspace = new AdhocWorkspace();
        var globalOptions = GetGlobalOptions(workspace);
 
        var option = CreateBoolOption(defaultValue);
 
        var options = new TieredAnalyzerConfigOptions(
            new TestAnalyzerConfigOptions(),
            globalOptions,
            LanguageNames.CSharp,
            ".editorconfig");
 
        var setting = CodeStyleSetting.Create(option, description: "TestDesciption", options, updater: null!);
        Assert.Equal(string.Empty, setting.Category);
        Assert.Equal("TestDesciption", setting.Description);
        Assert.False(setting.IsDefinedInEditorConfig);
        Assert.Equal(typeof(bool), setting.Type);
        Assert.Equal(defaultValue, setting.GetCodeStyle().Value);
    }
 
    [Theory]
    [InlineData(DayOfWeek.Monday)]
    [InlineData(DayOfWeek.Friday)]
    public static void CodeStyleSettingEnumFactory(DayOfWeek defaultValue)
    {
        using var workspace = new AdhocWorkspace();
        var globalOptions = GetGlobalOptions(workspace);
 
        var option = CreateEnumOption(defaultValue);
 
        var options = new TieredAnalyzerConfigOptions(
            new TestAnalyzerConfigOptions(),
            globalOptions,
            LanguageNames.CSharp,
            ".editorconfig");
 
        var setting = CodeStyleSetting.Create(
            option,
            description: "TestDesciption",
            options,
            updater: null!,
            enumValues: (DayOfWeek[])Enum.GetValues(typeof(DayOfWeek)),
            valueDescriptions: Enum.GetNames(typeof(DayOfWeek)));
 
        Assert.Equal(string.Empty, setting.Category);
        Assert.Equal("TestDesciption", setting.Description);
        Assert.False(setting.IsDefinedInEditorConfig);
        Assert.Equal(typeof(DayOfWeek), setting.Type);
        Assert.Equal(defaultValue, setting.GetCodeStyle().Value);
    }
 
    private static Option2<CodeStyleOption2<bool>> CreateBoolOption(bool defaultValue = false)
    {
        var defaultCodeStyle = CodeStyleOption2<bool>.Default.WithValue(defaultValue);
 
        return new Option2<CodeStyleOption2<bool>>(
            name: "dotnet_test_option",
            defaultValue: defaultCodeStyle,
            serializer: new EditorConfigValueSerializer<CodeStyleOption2<bool>>(_ => defaultCodeStyle, _ => "default"),
            isEditorConfigOption: true);
    }
 
    private static Option2<CodeStyleOption2<T>> CreateEnumOption<T>(T defaultValue)
        where T : notnull, Enum
    {
        var defaultCodeStyle = CodeStyleOption2<T>.Default.WithValue(defaultValue);
        return new Option2<CodeStyleOption2<T>>(
            name: "dotnet_test_option",
            defaultValue: defaultCodeStyle,
            serializer: new EditorConfigValueSerializer<CodeStyleOption2<T>>(_ => defaultCodeStyle, _ => "default"),
            isEditorConfigOption: true);
    }
 
    private class TestAnalyzerConfigOptions : AnalyzerConfigOptions
    {
        private readonly IDictionary<string, string> _dictionary;
        public TestAnalyzerConfigOptions((string, string)[]? options = null)
            => _dictionary = options?.ToDictionary(x => x.Item1, x => x.Item2) ?? [];
        public override bool TryGetValue(string key, [NotNullWhen(true)] out string? value)
            => _dictionary.TryGetValue(key, out value);
    }
}