#!/bin/usr/env python3
import lilikusers
import json
from flask import Flask, jsonify
from flask import request, Response
from functools import wraps

app = Flask(__name__)

lilik_ldap = lilikusers.LILiK_LDAP()

def check_auth(user_name, password):
    """This function is called to check if a username /
    password combination is valid.
    """
    return lilik_ldap.login(user_name, password)

def authenticate():
    """Sends a 401 response that enables basic auth"""
    return Response(
    'Could not verify your access level for that URL.\n'
    'You have to login with proper credentials', 401,
    {'WWW-Authenticate': 'Basic realm="Login Required"'})

def requires_auth(f):
    @wraps(f)
    def decorated(*args, **kwargs):
        auth = request.authorization
        if not auth or not check_auth(auth.username, auth.password):
            return authenticate()
        return f(*args, **kwargs)
    return decorated

@app.route('/api/users', methods=['GET'])
@requires_auth
def get_users():
    ''' return the list of users'''
    return jsonify(lilik_ldap.get_users())

@app.route('/api/user/<user_name>', methods=['GET'])
@requires_auth
def get_user(user_name):
    ''' return the list of users'''
    return jsonify(lilik_ldap.get_user(user_name).to_dict())

@app.route('/api/user/<user_name>', methods=['POST'])
@requires_auth
def post_user(self, user_name):
    new_lilik_user = request.get_json()
    return lilik_ldap.get_user(user_name).update(new_lilik_user)

if __name__ == '__main__':
    app.run(debug=True)