#!/usr/bin/env python
from __future__ import print_function

from os import listdir
from os.path import dirname, isfile, join, isdir

ROOT_DIR = join(dirname(__file__), '..')
FILES_FOLDER = join(ROOT_DIR, 'files')


def get_file_lists():
    if not isdir(FILES_FOLDER):
        print("! no file lists found")
        return {}

    list_files = [f for f in listdir(FILES_FOLDER) if isfile(join(FILES_FOLDER, f))]
    file_lists = {}

    for list_file in list_files:
        with open(join(FILES_FOLDER, list_file)) as lf:
            file_lists[list_file] = [f.strip() for f in lf.readlines() if len(f.strip()) > 0]

    return file_lists


def check_files(file_list):
    optional_folders = []
    errors = 0

    for f in file_list:
        # optional dir
        if f.startswith('?'):
            optional_folders.append(f[1:].strip())
        # else not a file -> error
        elif not isfile(f):
            # ignore if path starts with optional folder path
            if len(filter(lambda x: f.startswith(x), optional_folders)) > 0:
                continue

            print("! '{}' is missing".format(f))
            errors += 1

    if errors == 0:
        print(" -> All Files found.")


def main():
    for f, file_list in get_file_lists().items():
        print(f)
        check_files(file_list)


if __name__ == '__main__':
    main()