using System.Net;
using System.Net.Http.Json;
using MeetingAssistant.Recording;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.AspNetCore.TestHost;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection.Extensions;

namespace MeetingAssistant.Tests;

public sealed class HealthEndpointTests : IClassFixture<WebApplicationFactory<Program>>
{
    private readonly WebApplicationFactory<Program> factory;

    public HealthEndpointTests(WebApplicationFactory<Program> factory)
    {
        this.factory = factory.WithWebHostBuilder(builder =>
        {
            builder.ConfigureAppConfiguration((_, configuration) =>
            {
                configuration.AddInMemoryCollection(new Dictionary<string, string?>
                {
                    ["MeetingAssistant:FunAsr:Backend:Enabled"] = "false"
                });
            });
        });
    }

    [Fact]
    public async Task HealthEndpointReportsServiceStatus()
    {
        using var client = factory.CreateClient();

        using var response = await client.GetAsync("/health");
        var body = await response.Content.ReadFromJsonAsync<HealthResponse>();

        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        Assert.Equal("meeting-assistant", body?.Service);
        Assert.Equal("ok", body?.Status);
    }

    [Fact]
    public async Task ApplicationStartupDeletesStaleTemporaryRecordings()
    {
        await using var cleanupFactory = factory.WithWebHostBuilder(builder =>
        {
            builder.ConfigureTestServices(services =>
            {
                services.RemoveAll<IRecordedAudioStore>();
                services.AddSingleton<IRecordedAudioStore, StartupCleanupRecordedAudioStore>();
            });
        });
        using var client = cleanupFactory.CreateClient();

        using var response = await client.GetAsync("/health");
        var store = cleanupFactory.Services.GetRequiredService<IRecordedAudioStore>() as StartupCleanupRecordedAudioStore;

        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        Assert.True(store?.StaleRecordingsDeleted);
    }

    private sealed record HealthResponse(string Service, string Status);

    private sealed class StartupCleanupRecordedAudioStore : IRecordedAudioStore
    {
        public bool StaleRecordingsDeleted { get; private set; }

        public Task<IRecordedAudioSink> CreateSessionAsync(CancellationToken cancellationToken)
        {
            throw new NotSupportedException();
        }

        public Task DeleteStaleRecordingsAsync(CancellationToken cancellationToken)
        {
            StaleRecordingsDeleted = true;
            return Task.CompletedTask;
        }
    }
}