# Create your views here.
from django.contrib.auth.models import User
from django.contrib.auth import authenticate, login, logout
from ox.django.shortcuts import render_to_json_response, json_response
from django import forms
import json

def register(request):
    '''
        param data {
            username: 'username',
            password: 'password',
            email: 'emailaddress'
        }
        
        return {
            status: {'code': int, 'text': string}
            data: {
                errors: {
                    username: 'Unknown Username',
                    password: 'Incorrect Password'
                }
                user: {
                    ...
                }
            }
        }
    '''
    data = json.loads(request.POST['data'])
    form = RegisterForm(data, request.FILES)
    if form.is_valid():
        if models.User.objects.filter(username=form.data['username']).count() > 0:
            response = json_response({
                'errors': {
                    'username': 'Username already exists'
                }
            })
        elif models.User.objects.filter(email=form.data['email']).count() > 0:
            response = json_response({
                'errors': {
                    'email': 'Email address already exits'
                }
            })
        elif not form.data['password']:
            response = json_response({
                'errors': {
                    'password': 'Password can not be empty'
                }
            })
        else:
            first_user = models.User.objects.count() == 0
            user = models.User(username=form.data['username'], email=form.data['email'])
            user.set_password(form.data['password'])
            #make first user admin
            user.is_superuser = first_user
            user.is_staff = first_user
            user.save()
            user = authenticate(username=form.data['username'],
                                password=form.data['password'])
            login(request, user)
            user_json = models.get_user_json(user)
            response = json_response({
                'user': user_json
            }, text='account created')
    else:
        response = json_response(status=400, text='invalid data')
    return render_to_json_response(response)


class LoginForm(forms.Form):
    username = forms.TextInput()
    password = forms.TextInput()

def api_login(request):
    '''
        param data {
            username: 'username',
            password: 'password'
        }
        
        return {
            status: {'code': 200, 'text': 'ok'}
            data: {
                errors: {
                    username: 'Unknown Username',
                    password: 'Incorrect Password'
                }
                user: {
                    ...
                }
            }
        }
    '''
    data = json.loads(request.POST['data'])
    form = LoginForm(data, request.FILES)
    if form.is_valid():
        if models.User.objects.filter(username=form.data['username']).count() == 0:
            response = json_response({
                'errors': {
                    'username': 'Unknown Username'
                }
            })
        else:
            user = authenticate(username=data['username'], password=data['password'])
            if user is not None:
                if user.is_active:
                    login(request, user)
                    user_json = models.get_user_json(user)
                    response = json_response({
                        'user': user_json
                    })
                else:
                    response = json_response({
                        'errors': {
                            'username': 'User Disabled'
                        }
                    })
            else:
                response = json_response({
                    'errors': {
                        'password': 'Incorrect Password'
                    }
                })
    else:
        response = json_response(status=400, text='invalid data')
    return render_to_json_response(response)
actions.register(api_login, 'login')