import os
import logging
logging.basicConfig(
    format='[%(asctime)s] %(levelname)s %(module)s/%(funcName)s - %(message)s',
    level=logging.DEBUG if os.environ.get('DEBUG') else logging.INFO)

import settings
import asyncio
import json
import requests
from datetime import datetime
from uuid import uuid4
from telethon import TelegramClient, events

from aiohttp import web

bot = TelegramClient('data/bot', settings.API_ID, settings.API_HASH).start(bot_token=settings.API_TOKEN)
TANNER = 79316791

messages = {}

def controller_message(message):
    payload = dict(misc=message)
    r = requests.post('https://tbot.tannercollin.com/message', data=payload, timeout=10)
    if r.status_code == 200:
        return True
    else:
        logging.exception('Unable to communicate with controller! Message: ' + message)
        return False

@bot.on(events.NewMessage(incoming=True))
async def new_message(event):
    text = event.raw_text
    sender = event.sender_id
    logging.info('{} {}'.format(sender, text))

    if sender != TANNER:
        return
    if not text.startswith('/allow_'):
        return

    mid = text.replace('/allow_', '')
    try:
        data = messages[mid]
    except KeyError:
        await event.reply('Message ID not found. Did the bot restart?')
        return

    entry = '\n\n{} - {}'.format(data['date'], data['name'])

    website = data['website']
    if website:
        prefixes = ['http://', 'https://', 'gemini://', 'gopher://']
        for prefix in prefixes:
            if website.lower().startswith(prefix):
                break
        else:  # for loop
            website = 'http://' + website

        entry += ' (<a href="{0}" target="_blank" rel="noreferrer noopener">{0}</a>)'.format(website)

    entry += '\n\n{}\n\n------------------------------------------------------------'.format(data['message'])

    with open('data/g/index.html', 'r') as f:
        page = f.read()

    with open('data/g/index.html', 'w') as f:
        header, entries = page.split('===========', maxsplit=1)

        f.write(header)
        f.write('===========')
        f.write(entry)
        f.write(entries)

    await event.reply('Entry added to t0.vc/g')
    logging.info('Added: {}'.format(data))

async def message_tanner(name, website, message, captcha, mid):
    if 'tanner' not in captcha.lower():
        return

    if name.replace(' ', '') in ['website', 'webpage', 'homepage']:
        return

    report = 'Name: {}\n\nWebsite: {}\n\nMessage: {}\n\n/allow_{}'
    try:
        await bot.send_message(TANNER, message=report.format(name, website, message, mid))
    except:
        logging.error('Problem sending bot message.')
        controller_message('t0sig: problem sending bot message!')
        exit()


async def submit(request):
    data = dict(await request.post())
    data['date'] = str(datetime.today().date())
    mid = str(uuid4()).split('-')[0]
    logging.info('{} {}'.format(mid, data))

    try:
        fake_username = data.get('fake_username', '')  # not used yet
        name = data['name']
        website = data.get('website', '')
        message = data['message']
        captcha = data.get('captcha', '')
    except KeyError:
        raise web.HTTPBadRequest(reason='You are missing something.')

    if not len(name) or not len(message):
        raise web.HTTPBadRequest(reason='You are missing something.')

    if len(name) > 50:
        raise web.HTTPBadRequest(reason='Name is too long.')
    if len(website) > 100:
        raise web.HTTPBadRequest(reason='Website is too long.')
    if len(message) > 1000:
        raise web.HTTPBadRequest(reason='Message is too long.')

    await message_tanner(name, website, message, captcha, mid)

    messages[mid] = data

    with open('data/messages.log', 'a') as f:
        f.write(json.dumps(data)+'\n')

    return web.Response(text='Thanks! Your message is pending approval.')


if __name__ == '__main__':
    bot.start()
    app = web.Application()
    app.router.add_post('/', submit)
    web.run_app(app, port=8123)