// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System;
using System.Linq;
using Microsoft.AspNetCore.Razor.Language;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Razor;
using Microsoft.CodeAnalysis.Razor.ProjectSystem;
using Newtonsoft.Json;
using Xunit;

namespace Microsoft.VisualStudio.LanguageServices.Razor.Serialization
{
    public class ProjectSnapshotHandleSerializationTest
    {
        public ProjectSnapshotHandleSerializationTest()
        {
            var converters = new JsonConverterCollection();
            converters.RegisterRazorConverters();
            Converters = converters.ToArray();
        }

        public JsonConverter[] Converters { get; }

        [Fact]
        public void ProjectSnapshotHandleJsonConverter_Serialization_CanKindaRoundTrip()
        {
            // Arrange
            var snapshot = new ProjectSnapshotHandle(
                "Test.csproj",
                new ProjectSystemRazorConfiguration(
                RazorLanguageVersion.Version_1_1,
                    "Test",
                    new[]
                    {
                        new ProjectSystemRazorExtension("Test-Extension1"),
                        new ProjectSystemRazorExtension("Test-Extension2"),
                    }),
                ProjectId.CreateFromSerialized(Guid.NewGuid(), "Test"));

            // Act
            var json = JsonConvert.SerializeObject(snapshot, Converters);
            var obj = JsonConvert.DeserializeObject<ProjectSnapshotHandle>(json, Converters);

            // Assert
            Assert.Equal(snapshot.FilePath, obj.FilePath);
            Assert.Equal(snapshot.Configuration.ConfigurationName, obj.Configuration.ConfigurationName);
            Assert.Collection(
                snapshot.Configuration.Extensions, 
                e => Assert.Equal("Test-Extension1", e.ExtensionName),
                e => Assert.Equal("Test-Extension2", e.ExtensionName));
            Assert.Equal(snapshot.Configuration.LanguageVersion, obj.Configuration.LanguageVersion);
            Assert.Equal(snapshot.WorkspaceProjectId.Id, obj.WorkspaceProjectId.Id);
        }

        [Fact]
        public void ProjectSnapshotHandleJsonConverter_SerializationWithNulls_CanKindaRoundTrip()
        {
            // Arrange
            var snapshot = new ProjectSnapshotHandle("Test.csproj", null, null);

            // Act
            var json = JsonConvert.SerializeObject(snapshot, Converters);
            var obj = JsonConvert.DeserializeObject<ProjectSnapshotHandle>(json, Converters);

            // Assert
            Assert.Equal(snapshot.FilePath, obj.FilePath);
            Assert.Null(obj.Configuration);
            Assert.Null(obj.WorkspaceProjectId);
        }
    }
}