import logging
import os
from subprocess import CalledProcessError

from telegram.ext import Updater, MessageHandler, Filters

from download_utils import APK, BadPackageNameException

logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', level=logging.INFO)
logger = logging.getLogger(__name__)

def error_callback(update, context):
    logger.warning('Update "%s" caused error "%s"', update, context.error)

def get_package(update, context):
    logger.info("from {}: {}".format(update.message.chat_id, update.message.text))  # "history"

    if update.message.text == '/start':
        update.message.reply_text("To start downloading APK file send me a PlayStore link ok a package name. :)")
        return

    apk = APK(update.message.text, conf=CONF, conf_file=CONF_FILE)

    msg = context.bot.send_message(text=f"Downloading {apk.package_name}...",
                                   chat_id=update.message.chat_id)
    try:
        apk.download()
        with apk.send() as files:
            for f in files:
                context.bot.send_document(chat_id=update.message.chat_id, document=open(f, 'rb'))
    except BadPackageNameException as e:
        # instead of editing the text message we delete and resend one so a new notification will trigger
        context.bot.send_message(text="Bad package name: {}".format(e),
                                 chat_id=update.message.chat_id)
    except CalledProcessError:
        context.bot.send_message(text="Failed to send APK file",
                                 chat_id=update.message.chat_id)

    context.bot.delete_message(chat_id=update.message.chat_id,
                               message_id=msg.message_id)


if os.environ.get('CONF_FOLDER') is None:
    logger.error("No conf folder available")
    exit(1)
TOKEN = None
with open(os.path.join(os.environ['CONF_FOLDER'], 'bot.token')) as f:
    TOKEN = f.read().strip()

CONF = {
    'yes': True,
    'verbose': False,
    'tokencachefile': os.path.join(os.environ['CONF_FOLDER'], 'token.cache'),
}
CONF_FILE = os.path.join(os.environ['CONF_FOLDER'], 'gplaycli.conf')

updater = Updater(token=TOKEN)

updater.dispatcher.add_handler(MessageHandler(Filters.text, get_package))
updater.dispatcher.add_error_handler(error_callback)

updater.start_polling()
updater.idle()