import enum
import os

import telethon
import pgbotlib.dbstuff


class Paths(enum.Enum):
    CONFDIR = '/etc/pgbot'
    CONFIG = os.path.join(CONFDIR, 'pgbot.yml')
    TOKENS = os.path.join(CONFDIR, 'tokens.yml')
    SCHEDULE = os.path.join(CONFDIR, '/sched.yml')


class NameGenerator:
    def __init__(self, config: dict, db: pgbotlib.dbstuff.DBConn) -> None:
        self.db = db

    def get_name(self, sender: telethon.tl.types.User) -> str:
        query = 'SELECT name FROM names WHERE tg_id = %s'
        result = self.db.query_random(query, (sender.id,))
        if result:
            return result
        return self.get_tg_name(sender)

    @staticmethod
    def get_tg_name(sender: telethon.tl.types.User) -> str:
        result = [sender.first_name, sender.last_name]
        while None in result:
            result.remove(None)
        if result:
            return ' '.join(result)
        if sender.username:
            return sender.username
        return sender.id


class MiscReactor:
    def __init__(self, config: dict, db: pgbotlib.dbstuff.DBConn) -> None:
        self.namegen = NameGenerator(config, db)
        self.db = db

    def spawn_edited_handler(self,
                             client: telethon.TelegramClient,
                             trigger: telethon.events.common.EventBuilder) -> None:
        @client.on(trigger)
        async def handle_edited_message(event):
            sender = await event.get_sender()
            sender_name = self.namegen.get_name(sender)
            chat_id = event.message.peer_id
            await client.send_message(chat_id, f'Я всё видел! {sender_name} совсем охуел, сообщения правит!')