import discum
from typing import List
import webbrowser
from discord.ext.commands import Bot
import re
from bs4 import BeautifulSoup
import requests
from dotenv import load_dotenv
from os import getenv

PRICE_REGEX = re.compile(
    "(?:(?P<currency>[GBP|EUR|£|€])(?P<price>[0-9]+(?:\.[0-9]{1,2})))")
MODEL_REGEX = re.compile("[Rr][Tt][Xx] ?(?P<model>30[6789]0( [Tt][Ii])?).?")

URL_REGEX = "(?:(?:https?|ftp):\/\/|\b(?:[a-z\d]+\.))(?:(?:[^\s()<>]+|\((?:[^\s()<>]+|(?:\([^\s()<>]+\)))?\))+(?:\((?:[^\s()<>]+|(?:\(?:[^\s()<>]+\)))?\)|[^\s`!()\[\]{};:'.,<>?«»“”‘’]))?"

PARTALERT_ASIN = re.compile("asin=(?P<asin>[0-9a-zA-Z]{1,10})")
PARTALERT_TLD = re.compile("tld=(?P<tld>\.(?:it|es|de|fr|co\.uk))")

MONITORED_CHANNELS = [802674527850725377, 802674601519611925, 755728127069519913,
                      802674384120446996, 755727814912901170, 783425011116539964,
                      783682409635250187, 761002102804709448, 802674800786145311,
                      758224323843850250, 760577787332788315, 802674552541806662,
                      706910639959834738, 802674584473567303, 839507735531749446,
                      833700313819119676, 713321461124694056, 721009876893040682]

load_dotenv()

# load env vars from .env file
token = getenv("TOKEN")

if not token:
    print("Could not load environmental variables. Make sure TOKEN is set in .env")
    exit(0)


bot = discum.Client(token=token, log={"console": False, "file": False})

########################################
# Callbacks
########################################


def get_stockinformer_url(url: str) -> str:
    r = requests.get(url)
    b = BeautifulSoup(r.text)

    for a in b.find_all("a"):
        if "view at" in a.text.lower():
            return f"https://stockinformer.co.uk/{a.get('href')}"
    return None


def check_urls(urls: List[str]):
    for url in urls:
        print(f"Received {url}")

        if "partalert" in url:
            try:
                asin = PARTALERT_ASIN.search(url).group('asin')
                tld = PARTALERT_TLD.search(url).group('tld')

                url = f"https://amazon{tld}/dp/{asin}"
            except Exception as e:
                print(f"Exception: {e}")
                continue
        elif "stockinformer" in url:
            url = get_stockinformer_url(url)

            if not url:
                continue

        webbrowser.open(url)

        print(f'Opened {url}')


def check_price(message: str) -> bool:
    prices = {
        "3060 ti": {"gbp": 500, "eur": 600},
        "3070": {"gbp": 680, "eur": 850},
        "3080": {"gbp": 880, "eur": 1000},
        "3090": {"gbp": 1450, "eur": 1650}
    }

    try:
        price = float(PRICE_REGEX.search(message).group("price"))
        currency = PRICE_REGEX.search(message).group("currency")
        model = MODEL_REGEX.search(message).group("model").lower()

        if currency == "£":
            currency = "gbp"
        elif currency == "€":
            currency = "eur"
        else:
            currency = currency.lower()

        if model == "3060":
            return False

        print(f"Model: {model}, Price: {currency}{price:0.2f}")
        if price <= prices[model][currency]:
            return True

    except Exception as e:
        return False

    return False


@bot.gateway.command
def on_message(resp):
    if resp.event.ready_supplemental:
        bot.gateway.subscribeToGuildEvents(wait=1)

    if resp.event.message:
        m = resp.parsed.auto()
        # because DMs are technically channels too
        guildID = m['guild_id'] if 'guild_id' in m else None
        channelID = int(m['channel_id'])
        username = m['author']['username']
        discriminator = m['author']['discriminator']
        content = m['content']

        if channelID in MONITORED_CHANNELS:
            urls = re.findall(URL_REGEX, content)

            if (urls):
                check_urls(urls)


print("Initialized.")

bot.gateway.run(auto_reconnect=True)