using GmRelay.Bot.Features.Confirmation.HandleRsvp;
using GmRelay.Bot.Features.Confirmation.SendConfirmation;
using GmRelay.Bot.Features.Reminders.SendJoinLink;
using GmRelay.Bot.Features.Sessions.CreateSession;
using GmRelay.Bot.Features.Sessions.RescheduleSession;
using GmRelay.Bot.Infrastructure.Database;
using GmRelay.Bot.Infrastructure.Logging;
using GmRelay.Bot.Infrastructure.Scheduling;
using GmRelay.Bot.Infrastructure.Telegram;
using Npgsql;
using Telegram.Bot;

[module: Dapper.DapperAot]

var builder = Host.CreateApplicationBuilder(args);

// ── Aspire service defaults (OpenTelemetry, health checks) ───────────
builder.AddServiceDefaults();

// ── PostgreSQL (ручная регистрация — AOT safe, без Aspire-магии) ─────
builder.Services.AddSingleton<NpgsqlDataSource>(sp =>
{
    var config = sp.GetRequiredService<IConfiguration>();
    var loggerFactory = sp.GetRequiredService<ILoggerFactory>();
    var connectionString = config.GetConnectionString("gmrelaydb")
        ?? throw new InvalidOperationException(
            "ConnectionStrings:gmrelaydb is required. Set via environment variable ConnectionStrings__gmrelaydb.");

    var logger = loggerFactory.CreateLogger("GmRelay.Bot.Startup");
    logger.LogInformation(
        "Configured PostgreSQL data source with connection string {ConnectionString}",
        SecretRedactor.RedactConnectionString(connectionString));

    return NpgsqlDataSource.Create(connectionString);
});

// ── Database migrations ──────────────────────────────────────────────
builder.Services.AddSingleton<DbMigrator>();

// ── Telegram Bot Client ──────────────────────────────────────────────
builder.Services.AddSingleton<ITelegramBotClient>(sp =>
{
    var config = sp.GetRequiredService<IConfiguration>();
    var token = config["Telegram:BotToken"]
        ?? throw new InvalidOperationException(
            "Telegram:BotToken is required. Set via environment variable Telegram__BotToken or appsettings.json.");
    return new TelegramBotClient(token);
});

// ── Feature handlers (explicit registration — AOT safe) ──────────────
builder.Services.AddSingleton<SendConfirmationHandler>();
builder.Services.AddSingleton<HandleRsvpHandler>();
builder.Services.AddSingleton<SendJoinLinkHandler>();
builder.Services.AddSingleton<CreateSessionHandler>();
builder.Services.AddSingleton<JoinSessionHandler>();
builder.Services.AddSingleton<CancelSessionHandler>();
builder.Services.AddSingleton<GmRelay.Bot.Features.Sessions.ListSessions.DeleteSessionHandler>();
builder.Services.AddSingleton<GmRelay.Bot.Features.Sessions.ListSessions.ListSessionsHandler>();
builder.Services.AddSingleton<GmRelay.Bot.Features.Sessions.ExportCalendar.ExportCalendarHandler>();
builder.Services.AddSingleton<InitiateRescheduleHandler>();
builder.Services.AddSingleton<HandleRescheduleTimeInputHandler>();
builder.Services.AddSingleton<HandleRescheduleVoteHandler>();

// ── Telegram infrastructure ──────────────────────────────────────────
builder.Services.AddSingleton<UpdateRouter>();
builder.Services.AddHostedService<TelegramBotService>();

// ── Session scheduler ────────────────────────────────────────────────
builder.Services.AddHostedService<SessionSchedulerService>();

var host = builder.Build();

// ── Run database migrations on startup ───────────────────────────────
var migrator = host.Services.GetRequiredService<DbMigrator>();
migrator.MigrateUp();

await host.RunAsync();