#!/usr/bin/env python3

from pathlib import Path

import os
import shutil
import subprocess
import sys

def run():
    SCRIPT_PATH = Path(__file__).absolute().parent
    REPO_ROOT = SCRIPT_PATH.parent

    proto_path = REPO_ROOT / 'proto'

    nanopb_path = REPO_ROOT / 'thirdparty' / 'nanopb'

    # Make sure nanopb submodule is available
    if not os.path.isdir(nanopb_path):
        print(f'Nanopb checkout not found! Make sure you have inited/updated the submodule located at {nanopb_path}', file=sys.stderr)
        exit(1)

    nanopb_generator_path = nanopb_path / 'generator' / 'nanopb_generator.py'
    c_generated_output_path = REPO_ROOT / 'firmware' / 'src' / 'proto_gen'

    proto_files = [f for f in os.listdir(proto_path) if f.endswith('.proto')]
    assert len(proto_files) > 0, 'No proto files found!'

    # Generate C files via nanopb
    subprocess.check_call(['python3', nanopb_generator_path, '-D', c_generated_output_path] + proto_files, cwd=proto_path)


if __name__ == '__main__':
    run()