#!/usr/bin/env python3

import configparser
import os
from os.path import exists
from flask import Flask
from flask import request

debug = False

if debug:
    config_path_dir = '/tmp'
else:
    config_path_dir = './instance'
config_filename = f"{config_path_dir}/config.ini"

if exists(config_filename):
    config = configparser.ConfigParser()
    config.read(config_filename)
    if debug:
        print("Sections found in the config file: ", config.sections())
    if 'create-homedir' in config.sections():
        for key in config['create-homedir']:
            if debug:
                print('Key: ', key)
            if config['create-homedir']['SECRET_KEY']:
                SECRET_KEY = config['create-homedir']['SECRET_KEY']
            else:
                raise SystemExit('Error: config file, no SECRET_KEY found.')
            if config['create-homedir']['DIR_PREFIX']:
                DIR_PREFIX = config['create-homedir']['DIR_PREFIX']
            else:
                raise SystemExit('Error: config file, no DIR_PREFIX found.')
    else:
        raise SystemExit('Error: no create-homedir section found.')
else:
    raise SystemExit('Error: no config file found.')

def make_homedir(dir_path):
    if not os.path.isdir(dir_path):
        permissions = 0o700
        try:
            os.mkdir(dir_path, permissions)
        except OSError:
            return("Creation of the directory %s failed" % dir_path), 500
        else:
            return("Directory %s created successfully" % dir_path), 200
    else:
        return("Directory %s already exists" % dir_path), 200

def create_app(test_config=None):
    # create and configure the app
    create_home = Flask(__name__, instance_relative_config=True)
    # ensure the instance folder exists
    try:
        os.path.isdir(DIR_PREFIX)
    except OSError:
        pass

    # a simple page that says hello
    @create_home.route('/', methods=['GET', 'POST'])
    def makedir():
        if request.method == 'POST':
            username = request.form['user']
            return make_homedir(f"{DIR_PREFIX}/{username}")
        else:
            return "Nosey, aren't you?"

    return create_home