update.py

from logging import FileHandler, StreamHandler, INFO, basicConfig, error as log_error, info as log_info
from os import path as ospath, environ
from subprocess import run as srun
from requests import get as rget
from dotenv import load_dotenv

if ospath.exists('log.txt'):
    with open('log.txt', 'r+') as f:
        f.truncate(0)

basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
                    handlers=[FileHandler('log.txt'), StreamHandler()],
                    level=INFO)

CONFIG_FILE_URL = environ.get('CONFIG_FILE_URL')
try:
    if len(CONFIG_FILE_URL) == 0:
        raise TypeError
    try:
        res = rget(CONFIG_FILE_URL)
        if res.status_code == 200:
            with open('config.env', 'wb+') as f:
                f.write(res.content)
        else:
            log_error(f"Failed to download config.env {res.status_code}")
    except Exception as e:
        log_error(f"CONFIG_FILE_URL: {e}")
except:
    pass

load_dotenv('config.env', override=True)

UPSTREAM_REPO = environ.get('UPSTREAM_REPO')
UPSTREAM_BRANCH = environ.get('UPSTREAM_BRANCH')
try:
    if len(UPSTREAM_REPO) == 0:
       raise TypeError
except:
    UPSTREAM_REPO = None
try:
    if len(UPSTREAM_BRANCH) == 0:
       raise TypeError
except:
    UPSTREAM_BRANCH = 'master'

if UPSTREAM_REPO is not None:
    if ospath.exists('.git'):
        srun(["rm", "-rf", ".git"])

    update = srun([f"git init -q \
                     && git config --global user.email arshtwitterbot@gmail.com \
                     && git config --global user.name helios \
                     && git add . \
                     && git commit -sm update -q \
                     && git remote add origin {UPSTREAM_REPO} \
                     && git fetch origin -q \
                     && git reset --hard origin/{UPSTREAM_BRANCH} -q"], shell=True)

    if update.returncode == 0:
        log_info('Successfully updated with latest commit from UPSTREAM_REPO')
    else:
        log_error('Something went wrong while updating, check UPSTREAM_REPO if valid or not!')