# -*- coding: utf-8 -*-
from django.shortcuts import  render_to_response
from django.http import HttpResponseRedirect, HttpResponse
from django.core.context_processors import csrf
from django.contrib.auth.decorators import login_required
import random
#models and forms
from models import User
from forms import  UserForm, UserCreationForm
#custom views
from functions.custom_views import objects_list

from hashlib import md5


def user_all(request):
    """
    Return list of all users with pagination
    """
    return objects_list(request, User, 'user_all.html')

def user_change(request, url):
    """
    Return form of user and post it on the server.
    If form is posted redirect on the page of all users.
    """
    user = User.objects.safe_get(id=url)
    # try get user by url if doesnt work by id
    if user is None:
        user = User.objects.safe_get(url=url)
    #redirect to list of all users if cannot find user
    if user is None:
        return HttpResponseRedirect('/admin/accounts/all')

    if request.POST:
        form = UserForm(request.POST, instance=user)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect('/admin/accounts/all')
    else:
        form = UserForm(instance=user)

    args = {}
    args.update(csrf(request))

    args['form'] = form

    return render_to_response('user_change.html', args)

def create_admin(request):
    if request.POST:
        form = UserCreationForm(request.POST)
        if form.is_valid():
            user = form.save(commit=False)
            user.is_admin = False
            user.save()
            return HttpResponseRedirect('/admin/accounts/all')

    else:
        form = UserCreationForm()

    args = {}
    args.update(csrf(request))
    args['form'] = form

    return render_to_response('create_admin.html', args)

def create_md5(request):
    if request.POST:
        form = UserCreationForm(request.POST)
        if form.is_valid():
            user = User()
            user.email = request.POST['email']
            user.first_name = request.POST['first_name']
            user.last_name = request.POST['last_name']
            user.password = md5(request.POST['password2']).hexdigest()
            user.is_admin = True
            user.save()

            return HttpResponseRedirect('/admin/accounts/all')

    else:
        form = UserCreationForm()

    args = {}
    args.update(csrf(request))
    args['form'] = form

    return render_to_response('create_admin.html', args)

from django.core.mail import EmailMessage


def registration(request):
    if request.POST:
        form = UserCreationForm(request.POST)
        if form.is_valid():
            user  = form.save()
            email = EmailMessage('Subject', 'Body', to=['%s'%user.email])
            email.send()
            return HttpResponseRedirect('/admin/accounts/registration')
    else:
        form = UserCreationForm()

    args = {}
    args.update(csrf(request))

    args['form'] = form

    return render_to_response('registration.html', args)

def generatePassword():
    """
    generate random password from 8 symbols
    """
    SYMBOLS = [',', '.', '?', '!', '-', '+', '1', '2', '3', '4', '5', '6', '7', '8',
           '9', '0', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l',
           'm', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A',
           'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
           'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '#']
    PASSWORD_LENGTH = 8
    newPassword = []
    for i in range(PASSWORD_LENGTH):
        newPassword.append(SYMBOLS[random.randrange(0, len(SYMBOLS))])
    return ''.join(newPassword)

from django.conf import settings

def reset_password_email(request):
    """
    generate random password
    set this password to user and send on email
    """
    if request.GET:
        user = User.objects.get(email=request.GET['email'])
        new_pass = generatePassword()
        user.email_user('Reset password', 'Your new password: "%s" '%new_pass, settings.DEFAULT_FROM_EMAIL, )
        user.set_password(u'%s'%new_pass)
        user.save()
        return HttpResponse('success')

    return HttpResponse('error')
#--------------------------------------------------------------
'''
from django.views.decorators.debug import sensitive_post_parameters
from django.views.decorators.cache import never_cache
from django.views.decorators.csrf import csrf_protect
from django.utils.http import base36_to_int, is_safe_url
from django.shortcuts import resolve_url
from django.conf import settings
from django.conf.global_settings import LOGIN_REDIRECT_URL
from django.contrib.auth.forms import AuthenticationForm

@sensitive_post_parameters()
@csrf_protect
@never_cache
def login(request, template_name='registration/login.html',
          redirect_field_name=REDIRECT_FIELD_NAME,
          authentication_form=AuthenticationForm,
          current_app=None, extra_context=None):
    """
    Displays the login form and handles the login action.
    """
    redirect_to = request.REQUEST.get(redirect_field_name, '')

    if request.method == "POST":
        form = authentication_form(data=request.POST)
        if form.is_valid():

            # Ensure the user-originating redirection url is safe.
            if not is_safe_url(url=redirect_to, host=request.get_host()):
                redirect_to = resolve_url(settings.LOGIN_REDIRECT_URL)

            # Okay, security check complete. Log the user in.
            auth_login(request, form.get_user())

            if request.session.test_cookie_worked():
                request.session.delete_test_cookie()

            return HttpResponseRedirect(redirect_to)
    else:
        form = authentication_form(request)

    request.session.set_test_cookie()

    current_site = get_current_site(request)

    context = {
        'form': form,
        redirect_field_name: redirect_to,
        'site': current_site,
        'site_name': current_site.name,
    }
    if extra_context is not None:
        context.update(extra_context)
    return TemplateResponse(request, template_name, context,
                            current_app=current_app)
'''