#!/usr/bin/env python
#
# use_example_configs [repo:]configpath
#
# Examples:
#   use_example_configs
#   use_example_configs Creality/CR-10/CrealityV1
#   use_example_configs release-2.0.9.4:Creality/CR-10/CrealityV1
#
# If a configpath has spaces (or quotes) escape them or enquote the path
# If no branch: prefix is given use configs based on the current branch name.
# e.g., For `latest-2.1.x` name the working branch something like "my_work-2.1.x."
#       The branch or tag must first exist at MarlinFirmware/Configurations.
#       The fallback branch is bugfix-2.1.x.
#

import os, subprocess, sys, urllib.request

def get_current_branch():
  try:
    result = subprocess.run(['git', 'branch'], capture_output=True, text=True, check=True)
    for line in result.stdout.splitlines():
      if line.startswith('*'):
        return line[2:]
  except subprocess.CalledProcessError:
    return None

def fetch_configs(branch, config_path):
  print(f"Fetching {config_path} configurations from {branch}...")
  base_url = f"https://raw.githubusercontent.com/MarlinFirmware/Configurations/{branch}/config/{config_path}"
  files = ["Configuration.h", "Configuration_adv.h", "_Bootscreen.h", "_Statusscreen.h"]
  marlin_dir = os.path.join(os.getcwd(), "Marlin")
  if not os.path.exists(marlin_dir):
    print(f"Directory {marlin_dir} does not exist.")
    sys.exit(1)
  for file in files:
    url = f"{base_url}/{file}"
    dest_file = os.path.join(marlin_dir, file)
    if os.getenv('DEBUG', '0') == '1':
      print(f"Fetching {file} from {url} to {dest_file}")
    try:
      urllib.request.urlretrieve(url, dest_file)
    except urllib.error.HTTPError as e:
      if e.code == 404:
        if os.getenv('DEBUG', '0') == '1':
          print(f"File {file} not found (404), skipping.")
      else:
        raise

def main():
  branch = get_current_branch()
  if not branch:
    print("Not a git repository or no branch found.")
    sys.exit(1)

  if branch.startswith("bugfix-2."):
    branch = branch
  elif branch.endswith("-2.1.x") or branch == "2.1.x":
    branch = "latest-2.1.x"
  elif branch.endswith("-2.0.x") or branch == "2.0.x":
    branch = "latest-2.0.x"
  elif branch.endswith("-1.1.x") or branch == "1.1.x":
    branch = "latest-1.1.x"
  elif branch.endswith("-1.0.x") or branch == "1.0.x":
    branch = "latest-1.0.x"
  else:
    branch = "bugfix-2.1.x"

  if len(sys.argv) > 1:
    arg = sys.argv[1]
    if ':' in arg:
      part1, part2 = arg.split(':', 1)
      config_path = part2
      branch = part1
    else:
      config_path = arg
    config_path = 'examples/'+config_path.replace(' ', '%20')
  else:
    config_path = "default"

  try:
    subprocess.run(['restore_configs'], check=True)
  except FileNotFoundError:
    print("restore_configs not found, skipping.")
  fetch_configs(branch, config_path)

if __name__ == "__main__":
  main()