import configparser
import os
from pathlib import Path
from typing import Dict

# We read a configuration file for university setup that is located
# in $XDG_CONFIG_HOME/university-setup/config.cfg
# We follow standard configparser procedure


def get_config_file():
    if 'XDG_CONFIG_HOME' in os.environ.keys():
        xdg_config_home = Path(os.environ['XDG_CONFIG_HOME']).resolve()
    else:
        xdg_config_home = Path('~/.config').expanduser().resolve()
    config_file = xdg_config_home / 'university-setup' / 'config.cfg'
    if not config_file.exists():
        config_file.parent.mkdir(exist_ok=True, parents=True)
        config_file.write_text(
            '# Automatically generated default config file for university-setup\n'
            '# Edit this as you wish\n'
            '\n'
            '[Subprocess]\n'
            'terminal = i3-sensible-terminal\n'
            'editor = vim\n'
            ''
        )
        print(f'Initialized default config file at {str(config_file)}.')
    print(config_file)
    return config_file


def get_config(section_name: str = 'Subprocess') -> Dict:
    parser = configparser.RawConfigParser()
    parser.read(get_config_file())
    if section_name in parser:
        return dict(parser[section_name])
    else:
        return {}


def terminal() -> str:
    d = get_config('Subprocess')
    if 'terminal' in d.keys():
        return d['terminal']
    else:
        return 'i3-sensible-terminal'


def editor() -> str:
    d = get_config('Subprocess')
    if 'editor' in d.keys():
        return d['editor']
    else:
        return 'vim'