from django.conf import settings
from asgiref.sync import sync_to_async
from telegram import (
    ForceReply,
    Update,
    ReplyParameters,
)
from telegram.ext import (
    Application,
    CommandHandler,
    MessageHandler,
    filters,
    CallbackContext,
)
from telegram.constants import ParseMode, ChatType, MessageEntityType

from .apps import TgBotClass
from .models import Item

import logging

logger = logging.getLogger("root")


class TgBotApp:
    _app = None

    async def start(self, update: Update, context: CallbackContext):
        await update.message.reply_markdown_v2(
            (
                "Это бот для проведения инвентаризации\n"
                "/inv - начать новую инвентаризацию"
            ),
            # reply_markup=ForceReply(selective=True),
            reply_parameters=ReplyParameters(message_id=update.message.message_id),
        )

    async def inv(self, update: Update, context: CallbackContext):
        user = update.effective_user
        current_step = context.chat_data.get("step", None)
        logger.info(f"Step {current_step} from user {user.full_name}")
        if not current_step and update.message.text == "/inv":
            inv = await sync_to_async(Item.objects.create)(user_id=user.id)
            await update.message.reply_markdown_v2(
                (
                    f"Специалист {user.name or user.full_name}, ID {user.id}\n"
                    f"Начинаем инвентаризацию `#{inv.id}`\n"
                    f"Введите название объекта"
                ),
                reply_parameters=ReplyParameters(message_id=update.message.message_id),
            )
            context.chat_data["step"] = "name"
            context.chat_data["inv"] = inv.id
        elif current_step is "name":
            inv = await sync_to_async(Item.objects.get)(id=context.chat_data["inv"])
            inv.name = update.message.text
            await sync_to_async(inv.save)()
            await update.message.reply_markdown_v2(
                (
                    f"Инвентаризация `#{inv.id}`\n"
                    f"Название объекта `{inv.name}`"
                ),
                reply_parameters=ReplyParameters(message_id=update.message.message_id),
            )
            # context.chat_data["step"] = "add"
            context.chat_data["step"] = None

    async def error(self, update: Update, context: CallbackContext):
        logger.info(f"error in tgbot {context.error}\nReply update")
        TgBotClass.my_queue.put(update)

    async def set_webhook(self, url):
        if not self._app:
            logger.error("no app")
            return
        app = self._app
        await app.bot.set_webhook(url, allowed_updates=Update.ALL_TYPES)

    async def init_tg(self):
        self._app = (
            Application.builder()
            .token(settings.TGBOT["token"])
            .concurrent_updates(True)
            .updater(None)
            .build()
        )
        self._app.add_handler(
            CommandHandler("start", self.start, filters.ChatType.PRIVATE)
        )
        self._app.add_handler(CommandHandler("inv", self.inv, filters.ChatType.PRIVATE))
        self._app.add_handler(MessageHandler(filters.ChatType.PRIVATE, self.inv))
        self._app.add_error_handler(self.error)

        logger.info(
            {
                "app": self._app,
                "bot": self._app.bot,
                "handlers": self._app.handlers,
            }
        )
        await self._app.initialize()
        await self._app.start()
        return self._app