using System.Net;
using System.Text;
using System.Text.Json;
using dy.net.model.dto;
using dy.net.model.entity;
using dy.net.service;
using dy.net.storage;
using dy.net.Tests.TestInfrastructure;
using Microsoft.AspNetCore.DataProtection;
using SqlSugar;
using MediaStorageType = dy.net.model.dto.StorageType;

namespace dy.net.Tests;

public sealed class OpenListDirectoryRepairServiceTests
{
    [Fact]
    public async Task Preflight_OnlyIncludesExactTimestampDirectoriesAndKeepsCanonicalDirectory()
    {
        using var temporary = new TemporaryDirectory();
        using var database = new SqlSugarClient(new ConnectionConfig
        {
            ConnectionString = $"DataSource={Path.Combine(temporary.Path, "repair.sqlite")}",
            DbType = DbType.Sqlite,
            InitKeyType = InitKeyType.Attribute,
            IsAutoCloseConnection = true
        });
        database.CodeFirst.InitTables<AppConfig, WebDavSettings, OpenListSettings,
            OpenListDirectoryRepairTask, OpenListDirectoryRepairItem>();
        await database.Insertable(new AppConfig
        {
            Id = "config",
            StorageType = MediaStorageType.OpenList,
            FollowedTitleTemplate = string.Empty,
            FollowedTitleSeparator = string.Empty,
            FullFollowedTitleTemplate = string.Empty
        }).ExecuteCommandAsync();

        var provider = DataProtectionProvider.Create(new DirectoryInfo(Path.Combine(temporary.Path, "keys")),
            builder => builder.SetApplicationName("dysync.net"));
        var legacy = new WebDavSettingsService(database, provider);
        var settingsService = new OpenListSettingsService(database, provider, legacy);
        var settings = await settingsService.BuildCandidateAsync(new OpenListTestRequest
        {
            Endpoint = "https://openlist.example.test",
            BasePath = "/归档",
            SourcePath = "/源挂载",
            LocalStagingPath = Path.Combine(temporary.Path, "staging"),
            UserName = "account",
            Password = "password"
        });
        await settingsService.SaveAsync(settings, true, "tested");

        using var factory = new RepairHttpClientFactory();
        var service = new OpenListDirectoryRepairService(database, new DouyinCommonService(database),
            settingsService, new OpenListClient(factory));

        var preflight = await service.PreflightAsync(
            new OpenListDirectoryRepairPreflightRequest { LogicalPath = "/collect/Kk" },
            CancellationToken.None);

        Assert.True(preflight.CanStart);
        Assert.Equal("/collect/Kk", preflight.RequestedPath);
        Assert.Equal("/collect/KK", preflight.CanonicalPath);
        Assert.Equal(1, preflight.CandidateCount);

        var created = await service.CreateAsync(new CreateOpenListDirectoryRepairRequest
        {
            LogicalPath = preflight.RequestedPath,
            ConfigurationFingerprint = preflight.ConfigurationFingerprint
        }, CancellationToken.None);
        var items = await database.Queryable<OpenListDirectoryRepairItem>().ToListAsync();

        Assert.Equal(1, created.Task.TotalCount);
        var item = Assert.Single(items);
        Assert.Equal("Kk_20260809_123456", item.DirectoryName);
        Assert.DoesNotContain(items, x => x.DirectoryName == "KK");
    }

    private sealed class RepairHttpClientFactory : IHttpClientFactory, IDisposable
    {
        private readonly Handler _handler = new();

        public HttpClient CreateClient(string name) => new(_handler, disposeHandler: false);

        public void Dispose() => _handler.Dispose();
    }

    private sealed class Handler : HttpMessageHandler
    {
        protected override async Task<HttpResponseMessage> SendAsync(
            HttpRequestMessage request,
            CancellationToken cancellationToken)
        {
            var api = request.RequestUri!.AbsolutePath;
            if (api.EndsWith("/api/auth/login", StringComparison.Ordinal))
                return Json(new { code = 200, message = "success", data = new { token = "test-token" } });

            var body = JsonDocument.Parse(await request.Content!.ReadAsStringAsync(cancellationToken)).RootElement;
            var path = body.GetProperty("path").GetString();
            if (api.EndsWith("/api/fs/get", StringComparison.Ordinal))
            {
                if (path == "/归档/collect/KK")
                    return Json(new { code = 200, message = "success", data = new { name = "KK", size = 0, is_dir = true, hash_info = new { } } });
                return Json(new { code = 404, message = "object not found", data = (object)null });
            }

            Assert.EndsWith("/api/fs/list", api, StringComparison.Ordinal);
            var entries = path switch
            {
                "/" => new[] { Entry("归档", true) },
                "/归档" => new[] { Entry("collect", true) },
                "/归档/collect" => new[]
                {
                    Entry("KK", true),
                    Entry("Kk_20260809_123456", true),
                    Entry("Kk_20260809_12345", true),
                    Entry("Kk_20260809_123456_extra", true),
                    Entry("KK_20260809_123456", true),
                    Entry("Kkkk_20260809_123456", true),
                    Entry("Kk_20260810_123456", false)
                },
                _ => Array.Empty<object>()
            };
            return Json(new { code = 200, message = "success", data = new { content = entries, write = true } });
        }

        private static object Entry(string name, bool directory) => new { name, size = 0, is_dir = directory };

        private static HttpResponseMessage Json(object value) => new(HttpStatusCode.OK)
        {
            Content = new StringContent(JsonSerializer.Serialize(value), Encoding.UTF8, "application/json")
        };
    }
}