import requests
import os
import re

DIRECTORY = os.path.dirname(os.path.realpath(__file__))

UNITS = "http://optc-db.github.io/common/data/units.js"


def decode(link=""):
    if link == "":
        raise Exception("Empty link provided")

    url = link.replace("http://", "").split("/")

    if url[0] != "optc-db.github.io" or url[1] != "damage":
        raise Exception("Invalid link provided")

    chars = re.search(r'transfer/D([^C]+)C', "/".join(url[-2:])).groups(1)[0].split(",")

    char_name = []

    r = requests.get(UNITS)

    _chars = r.text.split('\n')

    for char in chars:
        char_id = int(char.split(":")[0])
        info = _chars[char_id]

        items = re.findall(r'"([^"]+)"', info)
        character_name = "{2} - [{0}](/{1})".format(items[0], items[1].lower(), char_id)

        char_name.append(character_name)

    print(char_name)

decode("http://optc-db.github.io/damage/#/transfer/D1751:99:100:0:0,1751:99:100:0:0,831:99,1043:99,575:99,984:99C10,10B0D0E0Q0L0G0R0S100H")