#!/usr/bin/env python

import os
import sys
import yaml


def main():
    if not os.path.exists(os.path.join(os.getcwd(), "settings.yaml")):
        sys.stderr.write("I can't find a settings.yaml in the current working directory, abort\n")
        sys.exit(1)

    settings = yaml.safe_load("settings.yaml")

    assert settings.get("title"), "You should specify a title in your main settings.yaml"

    dirs = filter(lambda x: x not in (".", "..") and os.path.isdir(x) and os.path.exists(os.path.join(os.getcwd(), x, "settings.yaml")), os.listdir(os.getcwd()))

    if not dirs:
        sys.stderr.write("I can't find at least one directory with a settings.yaml in the current working directory, you don't have any gallery?\nAbort\n")
        sys.exit(1)

    if not os.path.exists("build"):
        os.makedirs("build")


if __name__ == '__main__':
    main()