import argparse
import os
import os.path

parser = argparse.ArgumentParser()
parser.add_argument('-d', '--debug', action='store_true',
                    default='Debug', help='specify build configuration')
args = parser.parse_args()

ccls_file_name = '.ccls'

# project root dir
project_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
os.chdir(project_root)

global_std_standard = 'c++17'  # change this to change standard
global_std_standard_arg = '%cpp --std={}'.format(global_std_standard)

global_include_paths = [
    os.path.abspath('include')
]

global_definitions = []

if args.debug:
    global_definitions.append('_DEBUG')


def generate_ccls_content(additional_include_paths=[], additional_definitions=[]):
    include_args = [
        '-I{}'.format(path) for path in additional_include_paths + global_include_paths]
    definition_args = [
        '-D{}'.format(definition) for definition in additional_definitions + global_definitions]
    args = ['clang', global_std_standard_arg] + include_args + definition_args
    return '\n'.join(args)


def generate_root_ccls():
    with open(ccls_file_name, 'w') as f:
        print(generate_ccls_content(), file=f)


def generate_win_ccls_content():
    return generate_ccls_content(additional_definitions=['UNICODE', '_UNICODE', 'WIN32', '_WINDOWS'])


def generate_win_ccls():
    for path in ['src/win/', 'include/cru/win/']:
        with open(os.path.join(path, ccls_file_name), 'w') as f:
            print(generate_win_ccls_content(), file=f)


generate_root_ccls()
generate_win_ccls()