using System;
using System.IO;
using Dalamud.Data;
using Dalamud.Extensions.MicrosoftLogging;
using Dalamud.Game;
using Dalamud.Game.ClientState;
using Dalamud.Game.ClientState.Conditions;
using Dalamud.Game.ClientState.Objects;
using Dalamud.Game.Command;
using Dalamud.Game.Gui;
using Dalamud.Interface.Windowing;
using Dalamud.Plugin;
using Dalamud.Plugin.Services;
using Microsoft.Data.Sqlite;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Pal.Client.Commands;
using Pal.Client.Configuration;
using Pal.Client.Configuration.Legacy;
using Pal.Client.Database;
using Pal.Client.DependencyInjection;
using Pal.Client.Floors;
using Pal.Client.Net;
using Pal.Client.Rendering;
using Pal.Client.Scheduled;
using Pal.Client.Windows;

namespace Pal.Client;

/// <summary>
/// DI-aware Plugin.
/// </summary>
internal sealed class DependencyInjectionContext : IDisposable
{
    public const string DatabaseFileName = "palace-pal.data.sqlite3";
    public static DalamudLoggerProvider LoggerProvider { get; private set; } = null!;

    /// <summary>
    /// Initialized as temporary logger, will be overriden once context is ready with a logger that supports scopes.
    /// </summary>
    private ILogger _logger;

    private readonly string _sqliteConnectionString;
    private readonly ServiceCollection _serviceCollection = new();
    private ServiceProvider? _serviceProvider;

    public DependencyInjectionContext(
        DalamudPluginInterface pluginInterface,
        IClientState clientState,
        IGameGui gameGui,
        IChatGui chatGui,
        IObjectTable objectTable,
        IFramework framework,
        ICondition condition,
        ICommandManager commandManager,
        IDataManager dataManager,
        IGameInteropProvider gameInteropProvider,
        IPluginLog pluginLog,
        Plugin plugin)
    {
        LoggerProvider = new DalamudLoggerProvider(pluginLog);
        _logger = LoggerProvider.CreateLogger<DependencyInjectionContext>();
        _logger.LogInformation("Building dalamud service container for {Assembly}",
            typeof(DependencyInjectionContext).Assembly.FullName);

        // set up legacy services
#pragma warning disable CS0612
        JsonFloorState.SetContextProperties(pluginInterface.GetPluginConfigDirectory());
#pragma warning restore CS0612

        // set up logging
        _serviceCollection.AddLogging(builder =>
            builder.AddFilter("Pal", LogLevel.Trace)
                .AddFilter("Microsoft.EntityFrameworkCore.Database", LogLevel.Warning)
                .AddFilter("Grpc", LogLevel.Debug)
                .ClearProviders()
                .AddDalamudLogger(pluginLog));

        // dalamud
        _serviceCollection.AddSingleton<IDalamudPlugin>(plugin);
        _serviceCollection.AddSingleton(pluginInterface);
        _serviceCollection.AddSingleton(clientState);
        _serviceCollection.AddSingleton(gameGui);
        _serviceCollection.AddSingleton(chatGui);
        _serviceCollection.AddSingleton<Chat>();
        _serviceCollection.AddSingleton(objectTable);
        _serviceCollection.AddSingleton(framework);
        _serviceCollection.AddSingleton(condition);
        _serviceCollection.AddSingleton(commandManager);
        _serviceCollection.AddSingleton(dataManager);
        _serviceCollection.AddSingleton(gameInteropProvider);
        _serviceCollection.AddSingleton(new WindowSystem(typeof(DependencyInjectionContext).AssemblyQualifiedName));

        _sqliteConnectionString =
            $"Data Source={Path.Join(pluginInterface.GetPluginConfigDirectory(), DatabaseFileName)}";
    }

    public IServiceProvider BuildServiceContainer()
    {
        _logger.LogInformation("Building async service container for {Assembly}",
            typeof(DependencyInjectionContext).Assembly.FullName);

        // EF core
        _serviceCollection.AddDbContext<PalClientContext>(o => o
            .UseSqlite(_sqliteConnectionString)
            .UseModel(Database.Compiled.PalClientContextModel.Instance));
        _serviceCollection.AddTransient<JsonMigration>();
        _serviceCollection.AddScoped<Cleanup>();

        // plugin-specific
        _serviceCollection.AddScoped<DependencyContextInitializer>();
        _serviceCollection.AddScoped<DebugState>();
        _serviceCollection.AddScoped<GameHooks>();
        _serviceCollection.AddScoped<RemoteApi>();
        _serviceCollection.AddScoped<ConfigurationManager>();
        _serviceCollection.AddScoped<IPalacePalConfiguration>(sp =>
            sp.GetRequiredService<ConfigurationManager>().Load());
        _serviceCollection.AddTransient<RepoVerification>();

        // commands
        _serviceCollection.AddScoped<PalConfigCommand>();
        _serviceCollection.AddScoped<ISubCommand, PalConfigCommand>();
        _serviceCollection.AddScoped<ISubCommand, PalNearCommand>();
        _serviceCollection.AddScoped<ISubCommand, PalStatsCommand>();
        _serviceCollection.AddScoped<ISubCommand, PalTestConnectionCommand>();

        // territory & marker related services
        _serviceCollection.AddScoped<TerritoryState>();
        _serviceCollection.AddScoped<FrameworkService>();
        _serviceCollection.AddScoped<ChatService>();
        _serviceCollection.AddScoped<FloorService>();
        _serviceCollection.AddScoped<ImportService>();
        _serviceCollection.AddScoped<ObjectTableDebug>();

        // windows & related services
        _serviceCollection.AddScoped<AgreementWindow>();
        _serviceCollection.AddScoped<ConfigWindow>();
        _serviceCollection.AddScoped<StatisticsService>();
        _serviceCollection.AddScoped<StatisticsWindow>();

        // rendering
        _serviceCollection.AddScoped<SimpleRenderer>();
        _serviceCollection.AddScoped<SplatoonRenderer>();
        _serviceCollection.AddScoped<RenderAdapter>();

        // queue handling
        _serviceCollection.AddTransient<IQueueOnFrameworkThread.Handler<QueuedImport>, QueuedImport.Handler>();
        _serviceCollection
            .AddTransient<IQueueOnFrameworkThread.Handler<QueuedUndoImport>, QueuedUndoImport.Handler>();
        _serviceCollection
            .AddTransient<IQueueOnFrameworkThread.Handler<QueuedConfigUpdate>, QueuedConfigUpdate.Handler>();
        _serviceCollection
            .AddTransient<IQueueOnFrameworkThread.Handler<QueuedSyncResponse>, QueuedSyncResponse.Handler>();

        // build
        _serviceProvider = _serviceCollection.BuildServiceProvider(new ServiceProviderOptions
        {
            ValidateOnBuild = true,
            ValidateScopes = true,
        });


#if RELEASE
        // You're welcome to remove this code in your fork, but please make sure that:
        // - none of the links accessible within FFXIV open the original repo (e.g. in the plugin installer), and
        // - you host your own server instance
        //
        // This is mainly to avoid this plugin being included in 'mega-repos' that, for whatever reason, decide
        // that collecting all plugins is a good idea (and break half in the process).
        _serviceProvider.GetService<RepoVerification>();
#endif

        // This is not ideal as far as loading the plugin goes, because there's no way to check for errors and
        // tell Dalamud that no, the plugin isn't ready -- so the plugin will count as properly initialized,
        // even if it's not.
        //
        // There's 2-3 seconds of slowdown primarily caused by the sqlite init, but that needs to happen for
        // config stuff.
        _logger = _serviceProvider.GetRequiredService<ILogger<DependencyInjectionContext>>();
        _logger.LogInformation("Service container built");

        return _serviceProvider;
    }

    public void Dispose()
    {
        _logger.LogInformation("Disposing DI Context");
        _serviceProvider?.Dispose();

        // ensure we're not keeping the file open longer than the plugin is loaded
        using (SqliteConnection sqliteConnection = new(_sqliteConnectionString))
            SqliteConnection.ClearPool(sqliteConnection);
    }
}