# Импортирование библиотек
import asyncio
import logging
import signal
import ssl
import sys

from common.config import ServerConfig
from common.push import PushService
from oneme.controller import OnemeController
from tamtam.controller import TTController
from telegrambot.controller import TelegramBotController

# Конфиг сервера
server_config = ServerConfig()


class SQLiteCursorCompat:
    def __init__(self, connection):
        self.connection = connection
        self.cursor = None

    async def __aenter__(self):
        self.cursor = await self.connection.cursor()
        return self

    async def __aexit__(self, exc_type, exc, tb):
        if self.cursor is not None:
            await self.cursor.close()
        self.cursor = None

    @property
    def lastrowid(self):
        return None if self.cursor is None else self.cursor.lastrowid

    def _normalize_query(self, query):
        return query.replace("%s", "?").replace(
            "UNIX_TIMESTAMP()", "CAST(strftime('%s','now') AS INTEGER)"
        )

    async def execute(self, query, params=()):
        normalized_query = self._normalize_query(query)
        if params is None:
            params = ()
        elif not isinstance(params, (tuple, list, dict)):
            params = (params,)
        await self.cursor.execute(normalized_query, params)

    async def fetchone(self):
        row = await self.cursor.fetchone()
        if row is None:
            return None
        return dict(row)

    async def fetchall(self):
        rows = await self.cursor.fetchall()
        return [dict(row) for row in rows]


class SQLiteConnectionCompat:
    def __init__(self, connection):
        self.connection = connection

    async def __aenter__(self):
        return self

    async def __aexit__(self, exc_type, exc, tb):
        return False

    def cursor(self):
        return SQLiteCursorCompat(self.connection)


class SQLitePoolCompat:
    def __init__(self, connection):
        self.connection = connection

    def acquire(self):
        return SQLiteConnectionCompat(self.connection)


async def init_db():
    """Инициализация базы данных"""

    db = {}

    if server_config.db_type == "mysql":
        import aiomysql

        db = await aiomysql.create_pool(
            host=server_config.db_host,
            port=server_config.db_port,
            user=server_config.db_user,
            password=server_config.db_password,
            db=server_config.db_name,
            cursorclass=aiomysql.DictCursor,
            autocommit=True,
        )
    elif server_config.db_type == "sqlite":
        import aiosqlite

        raw_db = await aiosqlite.connect(server_config.db_file, isolation_level=None)
        raw_db.row_factory = aiosqlite.Row
        db = SQLitePoolCompat(raw_db)

    # Возвращаем
    return db


def init_ssl():
    """Создание контекста SSL"""
    # Создаем контекст SSL
    ssl_context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
    ssl_context.load_cert_chain(server_config.certfile, server_config.keyfile)

    # Возвращаем
    return ssl_context


def set_logging():
    """Настройка уровня логирования"""
    # Настройка уровня логирования
    log_level = server_config.log_level

    if log_level == "debug":
        logging.basicConfig(level=logging.DEBUG)
    elif log_level == "info":
        logging.basicConfig(level=logging.INFO)
    else:
        logging.basicConfig(level=None)


async def main():
    """Запуск сервера"""

    set_logging()
    db = await init_db()
    ssl_context = init_ssl()
    clients = {}
    push_service = PushService(server_config.firebase_credentials_path)

    async def api_event(target, eventData):
        target_clients = api.get("clients", {}).get(target, {}).get("clients", [])

        for client in target_clients:
            await controllers[client["protocol"]].event(target, client, eventData)

        # Если у пользователя нет активных подключений
        # и это новое сообщение - отсылаем пуш
        if not target_clients and eventData.get("eventType") == "new_msg":
            message = eventData.get("message", {})
            sender_id = message.get("sender")
            text = message.get("text", "")
            chat_id = eventData.get("chatId", "")
            msg_id = message.get("id", 0)
            await push_service.send_to_user(
                db, target,
                sender_id=sender_id,
                msg_id=msg_id,
                chat_id=chat_id,
                text=text,
            )

    api = {
        "db": db,
        "ssl": ssl_context,
        "clients": clients,
        "event": api_event,
        "origins": server_config.origins,
    }

    controllers = {
        "oneme": OnemeController(),
        "tamtam": TTController(),
        "telegrambot": TelegramBotController(),
    }

    api["telegram_bot"] = controllers["telegrambot"]

    coros = [controller.launch(api) for controller in controllers.values()]
    running_tasks = [asyncio.create_task(coro) for coro in coros]

    # Обработчик sigterm
    loop = asyncio.get_running_loop()

    def _shutdown(sig):
        for task in running_tasks:
            task.cancel()

    if sys.platform != "win32":
        for sig in (signal.SIGTERM, signal.SIGINT):
            loop.add_signal_handler(sig, _shutdown, sig)

    # Запускаем контроллеры
    try:
        await asyncio.gather(*running_tasks)
    except asyncio.CancelledError:
        logging.info("Все задачи завершены, выходим")


if __name__ == "__main__":
    asyncio.run(main())