Checks current version, and updates bnetlauncher: https://github.com/dafzor/bnetlauncher/releases

bnetlauncher_updater.py

"""
requirements:
• requests
• PyGitHub:  https://github.com/PyGithub/PyGithub
"""

import os
import time
import requests
from github import Github
from zipfile import ZipFile


### Setup Variables ###
g = Github("") # Put your access token here
bnetl = g.get_repo("dafzor/bnetlauncher")
latest_release = bnetl.get_latest_release()
bnet_asset = latest_release.get_assets()[0]
dl_link = bnet_asset.browser_download_url
lr_title = latest_release.title
game_dir = "G:/Games/Blizzard/Overwatch/" # Change to your desired location
lr_file_name = "last_download.txt"
lr_file = os.path.join(game_dir, lr_file_name)


def unzip(file_name):
    """Unzips the executable to the correct location, and deletes the zip file"""
    with ZipFile(file_name, "r") as zip_file:
        zip_file.extract("bnetlauncher.exe", game_dir)
        print(f"Unzipped bnetlauncher.exe from {file_name}")
    os.remove(file_name)
    print(f"Deleted {file_name}")
    print("Finished.")
    input("Press <ENTER> to exit.")


def download_latest():
    """Checks if it's the right asset before downloading.  Downloads the file, writes the
    latest downloaded version to file, then runs unzip()"""
    if "bnetlauncher" not in bnet_asset.name:
        return
    r = requests.get(dl_link, stream=True)
    file_name = dl_link.split("/")[-1]
    file_location = os.path.join(game_dir, file_name)
    print(f"Downloading {lr_title}")
    with open(file_location, "wb") as f:
        for chunk in r.iter_content(chunk_size=1024):
            if chunk:
                f.write(chunk)
    with open(lr_file, "w") as f:
        f.write(lr_title)
    print("Downloaded")
    unzip(file_location)

def read_file():
    """Read last_download.txt, and compare it to the latest release on github.  If there is a new version out, run download_latest()"""
    with open(lr_file) as f:
        read_data = f.read()
        installed_version = read_data.lstrip("v")
        latest_version = lr_title.lstrip("v")
        if not read_data:
            print("No installed version stored")
            download_latest()
        if installed_version < latest_version:
            print(f"Current installed version: {read_data}")
            download_latest()
        elif installed_version > latest_version:
            print(f"Error!  Invalid Version: {read_data}")
            input("Press <ENTER> to exit.")
        elif read_data == lr_title:
            print("You already have the lastest version")
            time.sleep(15)

try:
    # Try making the file, then download the latest version
    print(f"Checking for {lr_file}")
    open(lr_file, "x")
    print(f"First time running bnetlauncher_updater...  Creating {lr_file}")
    download_latest()
except FileExistsError:
    # If the file already exists, read it
    read_file()