using System.Net;
using System.Net.Http.Headers;
using FluentAssertions;
using Microsoft.AspNetCore.Mvc.Testing;
using Xunit;


using StellaOps.TestKit;
namespace StellaOps.Concelier.WebService.Tests;

public class ConcelierTimelineEndpointTests : IClassFixture<WebApplicationFactory<Program>>
{
    private readonly WebApplicationFactory<Program> _factory;

    public ConcelierTimelineEndpointTests(WebApplicationFactory<Program> factory)
    {
        _factory = factory.WithWebHostBuilder(_ => { });
    }

    [Trait("Category", TestCategories.Unit)]
        [Fact]
    public async Task Timeline_requires_tenant_header()
    {
        var client = _factory.CreateClient();

        var response = await client.GetAsync("/obs/concelier/timeline");

        response.StatusCode.Should().Be(HttpStatusCode.BadRequest);
    }

    [Trait("Category", TestCategories.Unit)]
        [Fact]
    public async Task Timeline_returns_sse_event()
    {
        var client = _factory.CreateClient();
        client.DefaultRequestHeaders.Add("X-Stella-Tenant", "tenant-a");

        using var request = new HttpRequestMessage(HttpMethod.Get, "/obs/concelier/timeline");
        request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("text/event-stream"));

        var response = await client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead);
        response.EnsureSuccessStatusCode();

        var stream = await response.Content.ReadAsStreamAsync();
        using var reader = new StreamReader(stream);
        var firstLine = await reader.ReadLineAsync();
        firstLine.Should().NotBeNull();
        firstLine!.Should().StartWith("event: ingest.update");
    }
}