#!/bin/python3

from requests import get
from os import listdir, remove
from shutil import rmtree, copyfileobj

INSTALL_DIR = ""
with open("pack-location.txt", "r") as f:
    INSTALL_DIR = f.read().strip()

DOWNLOADS = []
NAMES = set()
FILES = listdir(INSTALL_DIR)

with open("downloads.txt", "r") as f:
    for line in f:
        dl = line.strip().split(" ")
        if len(line) > 3 and len(dl) == 2 and line[0] != '#':
            dl[0] = dl[0].strip()
            dl[1] = dl[1].strip()
            DOWNLOADS.append(dl)
            NAMES.add(dl[0])

print("Updating pack...")
for mod in DOWNLOADS:
    if mod[0] in FILES:
        print("Skipping " + mod[0] + ", already up-to-date")
    else:
        print("Installing " + mod[0] + " from " + mod[1] + "...")
        download_obj = get(mod[1], stream=True)
        with open(INSTALL_DIR + "/" + mod[0], "wb") as write_file:
            copyfileobj(download_obj.raw, write_file)
        print("Done!")

print("\nRemoving old versions...")
for jar in FILES:
    if jar not in NAMES and jar[-4:] == ".jar":
        remove(INSTALL_DIR + "/" + jar)
        print("Removing '" + jar + "'")

print("\nFinished updating pack!")