#!/usr/bin/python3

import os, time, telebot, asyncio, telebot.async_telebot, nest_asyncio
from FortniteStatusNotifier import *
from Formatter import *
from FortniteClient import *
from FortniteEvents import *
from persistence import UserRepository

# Check token in environment variables
if "TELEBOT_BOT_TOKEN" not in os.environ:
    raise AssertionError("Please configure TELEBOT_BOT_TOKEN as environment variables")

class FortniteStatusObserver(Observer):
    async def update(self, fortniteStatus) -> None:
        await send_message_to_all(formatFortniteStatus(fortniteStatus))

class FortnitePresenceObserver(PresenceObserver):
    # Map name -> last seen not playing timestamp seconds
    statuses = {}

    async def update(self, display_name: str, playing: bool, party_size: int) -> None:
        if playing:
            if not display_name in self.statuses:
                await self.__notifyFriendPlaying(display_name, party_size)
                self.statuses[display_name] = time.time()
            else:
                diff = time.time() - self.statuses[display_name]
                if diff > 60 * 60: # 60 minutes
                     self.__notifyFriendPlaying(display_name, party_size)
        else:
            self.statuses[display_name] = time.time()

    async def __notifyFriendPlaying(self, display_name: str, party_size: int):
        await send_message_to_all(formatFriendOnline(display_name, party_size))

bot = telebot.async_telebot.AsyncTeleBot(os.environ["TELEBOT_BOT_TOKEN"])
userRepository = UserRepository('db.sqlite')
fortniteStatusWrapper = FortniteStatusNotifier(FortniteStatusObserver())
fortniteClient = FortniteClient(FortnitePresenceObserver())

@bot.message_handler(commands = ['start'])
async def startCommand(message: telebot.types.Message):
    if message.chat.type == 'private':
        alias = message.chat.username
    else:
        alias = message.chat.title
    userRepository.putUser(message.chat.id, alias)
    await reply(message, 'This chat successfully registered to receive Fortnite updates')

@bot.message_handler(commands = ['status'])
async def getStatus(message):
    await reply(message, formatFortniteStatus(fortniteStatus.getStatus()))

@bot.message_handler(commands = ['friends'])
async def getFriends(message):
    await reply(message, await formatFriends(fortniteClient.get_friends()))

@bot.message_handler(commands = ['find'])
async def findUser(message):
    arg = message.text.split()
    if len(arg) > 1:
        search_user_display_name = arg[1]
        print('Searching users by name {}'.format(search_user_display_name))
        users: typing.List[fortnitepy.User] = await fortniteClient.fetch_users_by_display_name(search_user_display_name)
        if (len(users) > 0):
            for user in users:
                await reply(message, await formatUser(user))
        else:
            await reply(message, 'User {} not found'.format(search_user_display_name))
    else:
        await reply(message, 'Usage: /find username')

@bot.message_handler(commands = ['add'])
async def addUser(message):
    arg = message.text.split()
    if len(arg) > 1:
        user_id = arg[1]
        print('Adding user with ID as friend {}'.format(user_id))
        await fortniteClient.add_friend(user_id)
        await reply(message, 'Send friend request successfully')
    else:
        await reply(message, 'Usage: /add username')

async def send_message_to_all(message_text: str):
    for user in userRepository.getAllUsers():
        try:
            await bot.send_message(
                user[0],
                message_text,
                parse_mode='MarkdownV2'
            )
        except Exception as error:
            if 'bot was kicked from the group chat' in str(error):
                userRepository.removeChat(user[0])

async def reply(message, message_text):
    await bot.reply_to(
        message,
        message_text,
        parse_mode='MarkdownV2')

async def run_tgbot():
    await bot.polling()

async def run_fortniteStatusWrapper():
    await fortniteStatusWrapper.run()

async def run_fortniteClient():
    fortniteClient.run()

async def run_all():
    await asyncio.gather(run_tgbot(), run_fortniteStatusWrapper(), run_fortniteClient())

if __name__ == '__main__':
    nest_asyncio.apply()
    loop = asyncio.get_event_loop()
    loop.run_until_complete(run_all())
    loop.close()