using System;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text.RegularExpressions;
using SKIT.FlurlHttpClient.Tools.CodeAnalyzer;
using Xunit;

namespace SKIT.FlurlHttpClient.Wechat.Api.UnitTests
{
    public class CodeAnalyzeTests
    {
        [Fact(DisplayName = "代码质量分析")]
        public void CodeAnalyze()
        {
            // NOTICE:
            //   如果 Visual Studio 遇到 “缺少 SKIT.FlurlHttpClient.Tools.CodeAnalyzer 包” 的错误，
            //   请参考此 Issue：https://github.com/fudiwei/DotNetCore.SKIT.FlurlHttpClient/issues/8

            Assert.Null(Record.Exception(() =>
            {
                var options = new TypeDeclarationAnalyzerOptions()
                {
                    SdkAssembly = Assembly.GetAssembly(typeof(WechatApiClient))!,
                    SdkRequestModelDeclarationNamespace = "SKIT.FlurlHttpClient.Wechat.Api.Models",
                    SdkResponseModelDeclarationNamespace = "SKIT.FlurlHttpClient.Wechat.Api.Models",
                    SdkExecutingExtensionDeclarationNamespace = "SKIT.FlurlHttpClient.Wechat.Api",
                    SdkWebhookEventDeclarationNamespace = "SKIT.FlurlHttpClient.Wechat.Api.Events",
                    ThrowOnNotFoundRequestModelTypes = true,
                    ThrowOnNotFoundResponseModelTypes = true,
                    ThrowOnNotFoundExecutingExtensionTypes = true,
                    ThrowOnNotFoundWebhookEventTypes = true
                };
                new TypeDeclarationAnalyzer(options)
                    .AddRule((_, _, cur) =>
                    {
                        if (cur.MemberKind != TypeDeclarationMemberKinds.RequestModelClass)
                            return;

                        string reqTypeName = cur.MemberAsType.GetNameWithoutGenerics();
                        string respTypeName = Regex.Replace(cur.MemberAsType.GetNameWithoutGenerics(), "Request$", "Response");

                        Type? inferType = cur.MemberAsType.GetInterfaces()
                            .Where(t => t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Models.IInferable<,>))
                            .Where(t => t.GenericTypeArguments[0].GetNameWithoutGenerics() == reqTypeName)
                            .Where(t => t.GenericTypeArguments[1].GetNameWithoutGenerics() == respTypeName)
                            .FirstOrDefault();
                        if (inferType is null)
                            throw new AnalysisException($"类型 \"{cur.MemberAsType.Name}\" 是一个请求模型，但未正确未实现 IInferable 接口。");
                    })
                    .AssertNoIssues();
            }));

            Assert.Null(Record.Exception(() =>
            {
                string workdir = Environment.CurrentDirectory;
                string projdir = Path.Combine(workdir, "../../../../../");

                var options = new SourceFileAnalyzerOptions()
                {
                    SdkAssembly = Assembly.GetAssembly(typeof(WechatApiClient))!,
                    SdkRequestModelDeclarationNamespace = "SKIT.FlurlHttpClient.Wechat.Api.Models",
                    SdkResponseModelDeclarationNamespace = "SKIT.FlurlHttpClient.Wechat.Api.Models",
                    SdkWebhookEventDeclarationNamespace = "SKIT.FlurlHttpClient.Wechat.Api.Events",
                    ProjectSourceRootDirectory = Path.Combine(projdir, "./src/SKIT.FlurlHttpClient.Wechat.Api/"),
                    ProjectTestRootDirectory = Path.Combine(projdir, "./test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/"),
                    ThrowOnNotFoundRequestModelClassCodeFiles = true,
                    ThrowOnNotFoundResponseModelClassCodeFiles = true,
                    ThrowOnNotFoundExecutingExtensionClassCodeFiles = true,
                    ThrowOnNotFoundWebhookEventClassCodeFiles = true,
                    ThrowOnNotFoundRequestModelSerializationSampleFiles = true,
                    ThrowOnNotFoundResponseModelSerializationSampleFiles = true,
                    ThrowOnNotFoundWebhookEventSerializationSampleFiles = true
                };
                new SourceFileAnalyzer(options).AssertNoIssues();
            }));
        }
    }
}