from importlib.util import module_from_spec, spec_from_file_location
from os import getcwd, path, walk

#=================================================================================

# Import functions
# Took from https://stackoverflow.com/a/57892961
def get_py_files(src):
    cwd = getcwd()
    py_files = [] 
    for root, dirs, files in walk(src):
        for file in files:
            if file.endswith(".py"):
                py_files.append(path.join(cwd, root, file))
    return py_files


def dynamic_import(module_name, py_path):
    try:
        module_spec = spec_from_file_location(module_name, py_path)
        module = module_from_spec(module_spec) # type: ignore
        module_spec.loader.exec_module(module) # type: ignore
        return module
    except SyntaxError:
        print(f"Could not load extension {module_name} due to invalid syntax. Check logs/errors.log for details.", flush=True)
        return
    except Exception as exp:
        print(f"Could not load extension {module_name} due to {exp}", flush=True)
        return


def dynamic_import_from_src(src, star_import = False):
    my_py_files = get_py_files(src)
    for py_file in my_py_files:
        module_name = path.split(py_file)[-1][:-3]
        print(f"Importing {module_name} extension...", flush=True)
        imported_module = dynamic_import(module_name, py_file)
        if imported_module != None:
            if star_import:
                for obj in dir(imported_module):
                    globals()[obj] = imported_module.__dict__[obj]
            else:
                globals()[module_name] = imported_module
        print(f"Successfully loaded {module_name} extension", flush=True)
    return

#=================================================================================