# -*- coding: utf-8 -*-
import random
import json
from hashlib import md5
from django.shortcuts import  render_to_response
from django.conf import settings
from django.http import HttpResponseRedirect, HttpResponse
from django.core.context_processors import csrf
from django.contrib.auth.decorators import login_required
from django.utils.translation import ugettext as _
#models and forms
from models import User
from forms import UserForm, UserCreationForm, ChangePasswordForm, EmailAnnouncementForm, UserFilterForm
#custom views
from functions.admin_views import AdminView, AdminListView

class UserListView(AdminListView):
    template_name = 'admin/accounts/user_list.html'
    form_class = UserFilterForm
    model = User


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:
        # bug with saving staff users(set is_staff to False)
        staff = user.is_staff

        form = UserForm(request.POST, instance=user)
        if form.is_valid():

            user = form.save()
            if staff:
                #
                user.is_staff = True
                user.save()
            return HttpResponseRedirect('/admin/accounts/all')
        else:
            form.fields['city'].widget.attrs['data-init-text'] = user.profile.city.name

    else:
        profile = user.profile
        data = {'country':profile.country_id, 'city': profile.city_id,
                'title': profile.title, 'descriptions': profile.descriptions,
                'keywords': profile.keywords, 'phone': profile.phone, 'web_page': profile.web_page,
                'about': profile.about}

        form = UserForm(instance=user,initial=data)

        if user.profile.city:
            form.fields['city'].widget.attrs['data-init-text'] = user.profile.city.name

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

    args['form'] = form
    args['object'] = user

    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)


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)



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')

@login_required
def change_password(request):
    """
    Change current user password if new password is valid
    """
    success = {'success': False}
    if request.POST:
        form = ChangePasswordForm(request.POST)
        if form.is_valid():
            user = request.user
            if(user.check_password(form.cleaned_data.get('old_password'))):
                #user.set_password(form.cleaned_data.get('new_password'))
                #user.save()
                success['success'] = True
                success['message'] = _(u'Пароль именен')
                return HttpResponse(json.dumps(success), content_type='application/json')
            else:
                errors = {'errors': [_(u'Не правильный пароль')]}
                success.update(errors)
                return HttpResponse(json.dumps(success), content_type='application/json')
        else:
            errors = [err[0] for err in form.errors.values()]
            errors = {'errors': errors}
            success.update(errors)
            return HttpResponse(json.dumps(success), content_type='application/json')
    else:
        return HttpResponse(json.dumps(success), content_type='application/json')