using System.Net;
using System.Net.Http.Json;
using Hua.Todo.HttpApi.AspNetCore.CloudSync.Services;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using Xunit;

namespace Hua.Todo.Host.Tests.CloudSync;

/// <summary>
/// CloudSyncProxyMiddleware 行为集成测试。
/// 验证云同步路径代理转发、无 URL 时返回 503。
/// settings 端点已迁移至 DynamicApi（/api/cloudSyncProxySettings），不在本测试覆盖范围。
/// </summary>
public class CloudSyncProxyMiddlewareTests : IDisposable
{
    private readonly WebApplication _app;
    private readonly HttpClient _client;

    public CloudSyncProxyMiddlewareTests()
    {
        var builder = WebApplication.CreateBuilder();
        builder.WebHost.UseUrls("http://127.0.0.1:0");
        builder.Services.AddCloudSyncProxy();

        var app = builder.Build();

        app.UseCloudSyncProxy();

        _app = app;
        _app.StartAsync().GetAwaiter().GetResult();

        _client = new HttpClient { BaseAddress = new Uri(_app.Urls.First()) };
    }

    [Fact]
    public async Task Probe_NoCloudSyncUrl_Returns503()
    {
        var response = await _client.PostAsJsonAsync("/api/cloud-sync/probe",
            new { targetUrl = "http://localhost:5173" });

        Assert.Equal(HttpStatusCode.ServiceUnavailable, response.StatusCode);
        var content = await response.Content.ReadAsStringAsync();
        Assert.Contains("cloud sync server URL not configured", content);
    }

    [Fact]
    public async Task AuthLogin_NoCloudSyncUrl_Returns503()
    {
        var response = await _client.PostAsJsonAsync("/api/auth/login",
            new { username = "admin", password = "123456" });

        Assert.Equal(HttpStatusCode.ServiceUnavailable, response.StatusCode);
    }

    [Fact]
    public async Task Tasks_NoCloudSyncUrl_Returns503()
    {
        var response = await _client.GetAsync("/api/tasks/");

        Assert.Equal(HttpStatusCode.ServiceUnavailable, response.StatusCode);
    }

    [Fact]
    public async Task Tasks_WithoutTrailingSlash_NoCloudSyncUrl_Returns503()
    {
        var response = await _client.PostAsJsonAsync("/api/tasks", new { });

        Assert.Equal(HttpStatusCode.ServiceUnavailable, response.StatusCode);
    }

    [Fact]
    public async Task SecurityPolicy_NoCloudSyncUrl_Returns503()
    {
        var response = await _client.GetAsync("/api/security/policy");

        Assert.Equal(HttpStatusCode.ServiceUnavailable, response.StatusCode);
    }

    [Fact]
    public async Task Sync_NoCloudSyncUrl_Returns503()
    {
        var response = await _client.PostAsJsonAsync("/api/sync/", new { });

        Assert.Equal(HttpStatusCode.ServiceUnavailable, response.StatusCode);
    }

    public void Dispose()
    {
        _client.Dispose();
        _app.StopAsync().GetAwaiter().GetResult();
        _app.DisposeAsync().GetAwaiter().GetResult();
    }
}