import shutil
import json
import os
import requests
import urllib3
from urllib import request
import ssl


urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

with open("config.json", mode="r") as config_file:
    config = json.load(config_file)


def get_md5sum(md5_url):
    r = requests.get(md5_url, verify=False, stream=True)
    return str(r.text.split(" ")[0])


def download_file(url):
    ctx = ssl.create_default_context()
    ctx.check_hostname = False
    ctx.verify_mode = ssl.CERT_NONE

    file_name = url.split('/')[-1]
    u = request.urlopen(url)
    f = open(file_name, 'wb')
    file_size = u.getheader("Content-Length")
    print(file_size)
    print("Downloading: %s Bytes: %s" % (file_name, file_size))

    file_size_dl = 0
    block_sz = 8192
    while True:
        file_buffer = u.read(block_sz)
        if not file_buffer:
            break

        file_size_dl += len(file_buffer)
        f.write(file_buffer)

    f.close()


def main():
    global config_file
    online_version = get_md5sum(config["arc_dps"]["md5path"])
    arc_dps_url = config["arc_dps"]["download_path"]
    if config["arc_dps"]["current_version"] != online_version:
        arc_dps_file_name = arc_dps_url.rsplit('/', 1)[-1]
        download_file(arc_dps_url)
        shutil.move(arc_dps_file_name, os.path.join(config["guildwars2_path"], "bin64", arc_dps_file_name))

        config["arc_dps"]["current_version"] = online_version
        with open("config.json", mode="w") as config_file:
            config_file = (json.dump(config, config_file, indent=2))


if __name__ == "__main__":
    main()