using System;
using System.Net.Http;
using Jellyfin.Plugin.Floatplane.Api;
using Jellyfin.Plugin.Floatplane.Channel;
using Jellyfin.Plugin.Floatplane.Playback;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Channels;
using MediaBrowser.Controller.Plugins;
using Microsoft.Extensions.DependencyInjection;

namespace Jellyfin.Plugin.Floatplane;

/// <summary>
/// Registers the plugin's services. Found by Jellyfin through type scanning; needs a
/// parameterless constructor. In 10.10 <c>ChannelManager</c> takes <c>IEnumerable&lt;IChannel&gt;</c>
/// from DI, so the channel must be registered here.
/// </summary>
public class PluginServiceRegistrator : IPluginServiceRegistrator
{
    /// <summary>Named HttpClient for Floatplane API + CDN traffic.</summary>
    public const string HttpClientName = "Floatplane";

    /// <inheritdoc />
    public void RegisterServices(IServiceCollection serviceCollection, IServerApplicationHost applicationHost)
    {
        serviceCollection
            .AddHttpClient(HttpClientName, client =>
            {
                client.Timeout = TimeSpan.FromSeconds(60);
                client.DefaultRequestHeaders.UserAgent.ParseAdd(Plugin.UserAgent);
            })
            .ConfigurePrimaryHttpMessageHandler(() => new HttpClientHandler
            {
                // The session cookie is attached per request; no cookie jar, no redirects
                // (a 302 from the CDN would otherwise be followed with the cookie attached).
                UseCookies = false,
                AllowAutoRedirect = false,
                AutomaticDecompression = System.Net.DecompressionMethods.All
            });

        serviceCollection.AddSingleton<FloatplaneAuthService>();
        serviceCollection.AddSingleton<FloatplaneApiClient>();
        serviceCollection.AddSingleton<CatalogService>();
        serviceCollection.AddSingleton<DeliveryResolver>();

        // One instance: the status endpoint and the sync task must see the same caches
        // as the channel Jellyfin serves from.
        serviceCollection.AddSingleton<SortNameUpdater>();
        serviceCollection.AddSingleton<FloatplaneChannel>();
        serviceCollection.AddSingleton<IChannel>(sp => sp.GetRequiredService<FloatplaneChannel>());

        // The same post appears under "All videos" and under its sub-channel (Jellyfin
        // allows one parent per item id); this keeps watched/resume state in sync.
        serviceCollection.AddHostedService<UserDataMirror>();
    }
}