using LightlessSync.FileCache;
using LightlessSync.LightlessConfiguration;
using LightlessSync.PlayerData.Pairs;
using LightlessSync.PlayerData.Services;
using LightlessSync.Services;
using LightlessSync.Services.Mediator;
using LightlessSync.Services.ServerConfiguration;
using LightlessSync.UI;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using System.Reflection;

namespace LightlessSync;

#pragma warning disable S125 // Sections of code should not be commented out
/*
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*/
#pragma warning restore S125 // Sections of code should not be commented out
// thank you dark 🙏

public class LightlessPlugin : MediatorSubscriberBase, IHostedService
{
    private readonly DalamudUtilService _dalamudUtil;
    private readonly LightlessConfigService _lightlessConfigService;
    private readonly ServerConfigurationManager _serverConfigurationManager;
    private readonly IServiceScopeFactory _serviceScopeFactory;
    private IServiceScope? _runtimeServiceScope;
    private Task? _launchTask = null;

    public LightlessPlugin(ILogger<LightlessPlugin> logger, LightlessConfigService lightlessConfigService,
        ServerConfigurationManager serverConfigurationManager,
        DalamudUtilService dalamudUtil,
        IServiceScopeFactory serviceScopeFactory, LightlessMediator mediator) : base(logger, mediator)
    {
        _lightlessConfigService = lightlessConfigService;
        _serverConfigurationManager = serverConfigurationManager;
        _dalamudUtil = dalamudUtil;
        _serviceScopeFactory = serviceScopeFactory;
    }

    public Task StartAsync(CancellationToken cancellationToken)
    {
        var version = Assembly.GetExecutingAssembly().GetName().Version!;
        Logger.LogInformation("Launching {name} {major}.{minor}.{build}", "Lightless Sync", version.Major, version.Minor, version.Build);
        Mediator.Publish(new EventMessage(new Services.Events.Event(nameof(LightlessPlugin), Services.Events.EventSeverity.Informational,
            $"Starting Lightless Sync {version.Major}.{version.Minor}.{version.Build}")));

        Mediator.Subscribe<SwitchToMainUiMessage>(this, (msg) => { if (_launchTask == null || _launchTask.IsCompleted) _launchTask = Task.Run(WaitForPlayerAndLaunchCharacterManager); });
        Mediator.Subscribe<DalamudLoginMessage>(this, (_) => DalamudUtilOnLogIn());
        Mediator.Subscribe<DalamudLogoutMessage>(this, (_) => DalamudUtilOnLogOut());

        UIColors.Initialize(_lightlessConfigService);
        Mediator.StartQueueProcessing();

        return Task.CompletedTask;
    }

    public Task StopAsync(CancellationToken cancellationToken)
    {
        UnsubscribeAll();

        DalamudUtilOnLogOut();

        Logger.LogDebug("Halting LightlessPlugin");

        return Task.CompletedTask;
    }

    private void DalamudUtilOnLogIn()
    {
        Logger?.LogDebug("Client login");
        if (_launchTask == null || _launchTask.IsCompleted) _launchTask = Task.Run(WaitForPlayerAndLaunchCharacterManager);
    }

    private void DalamudUtilOnLogOut()
    {
        Logger?.LogDebug("Client logout");

        _runtimeServiceScope?.Dispose();
    }

    private async Task WaitForPlayerAndLaunchCharacterManager()
    {
        while (!await _dalamudUtil.GetIsPlayerPresentAsync().ConfigureAwait(false))
        {
            await Task.Delay(100).ConfigureAwait(false);
        }

        try
        {
            Logger?.LogDebug("Launching Managers");

            _runtimeServiceScope?.Dispose();
            _runtimeServiceScope = _serviceScopeFactory.CreateScope();
            _runtimeServiceScope.ServiceProvider.GetRequiredService<UiService>();
            _runtimeServiceScope.ServiceProvider.GetRequiredService<CommandManagerService>();
            if (!_lightlessConfigService.Current.HasValidSetup() || !_serverConfigurationManager.HasValidConfig())
            {
                Mediator.Publish(new SwitchToIntroUiMessage());
                return;
            }
            _runtimeServiceScope.ServiceProvider.GetRequiredService<CacheCreationService>();
            _runtimeServiceScope.ServiceProvider.GetRequiredService<TransientResourceManager>();
            _runtimeServiceScope.ServiceProvider.GetRequiredService<VisibleUserDataDistributor>();
            _runtimeServiceScope.ServiceProvider.GetRequiredService<NotificationService>();
            _runtimeServiceScope.ServiceProvider.GetRequiredService<NameplateService>();

            // TODO: move this to a better place
            var ver = Assembly.GetExecutingAssembly().GetName().Version;
            var currentVersion = ver == null ? string.Empty : $"{ver.Major}.{ver.Minor}.{ver.Build}";
            var lastSeen = _lightlessConfigService.Current.LastSeenVersion ?? string.Empty;
            Logger?.LogDebug("Last seen version: {lastSeen}, current version: {currentVersion}", lastSeen, currentVersion);
            Mediator.Publish(new UiToggleMessage(typeof(UpdateNotesUi)));

            if (string.IsNullOrEmpty(lastSeen))
            {
                _lightlessConfigService.Current.LastSeenVersion = currentVersion;
                _lightlessConfigService.Save();
            }
            else if (!string.Equals(lastSeen, currentVersion, StringComparison.Ordinal))
            {
                if (_lightlessConfigService.Current.HasValidSetup() && _serverConfigurationManager.HasValidConfig())
                {
                    Mediator.Publish(new UiToggleMessage(typeof(UpdateNotesUi)));
                }
                _lightlessConfigService.Current.LastSeenVersion = currentVersion;
                _lightlessConfigService.Save();
            }

#if !DEBUG
            if (_lightlessConfigService.Current.LogLevel != LogLevel.Information)
            {
                Mediator.Publish(new NotificationMessage("Abnormal Log Level",
                    $"Your log level is set to '{_lightlessConfigService.Current.LogLevel}' which is not recommended for normal usage. Set it to '{LogLevel.Information}' in \"Lightless Settings -> Debug\" unless instructed otherwise.",
                    LightlessConfiguration.Models.NotificationType.Error, TimeSpan.FromSeconds(15000)));
            }
#endif
        }
        catch (Exception ex)
        {
            Logger?.LogCritical(ex, "Error during launch of managers");
        }
    }
}