# -*- coding: utf-8 -*-

from __future__ import absolute_import

#python

from urlparse import urlparse

import json

import urllib

import os

#django

from django.conf import settings

from django.db.models import Q

from django.http import HttpResponse

from django.shortcuts import render_to_response

from django.template import RequestContext

from django.core.urlresolvers import reverse

from django.db.models.signals import post_save

#django.contrib

from django.contrib.auth.decorators import login_required

from django.contrib.auth.forms import AuthenticationForm

from django.contrib.auth.forms import PasswordChangeForm

from django.contrib.auth.models import User

from django.core.exceptions import ObjectDoesNotExist

#PIL

from PIL import Image

from .utils import handle_uploaded_photo

from .forms import RegisterForm

from .forms import EditProfileForm

from .forms import UsernameForm

@login_required

def account(request, template_name="user/account.html"):

    """Displays the main screen of the current user's account.

    """

    user = request.user

    profile = user.get_profile()

    talks = Talk.objects.filter(speaker=user)

    try:

        registration = Registration.objects.get(registrant=user)

    except ObjectDoesNotExist:

        registration = None

    try:

        wifiobj = Wifi.objects.get(user=user)

    except ObjectDoesNotExist:

        wifiobj = None

    if profile.photo:

        photo = os.path.join(settings.USER_MEDIA_URL, profile.photo)

    else:

        photo = '/img/user-default.png'

    qstring = ""

    wifi_comment = None

    if wifiobj:

        wifi_form = False

    else:

        if request.method == "POST":

            wifi_form = WifiForm(request.POST)

            if wifi_form.is_valid():

                wifi_form.save(user)

            wifi_comment = 'Thanks, your wifi preference has been saved'

            wifi_form = None

        else:

            wifi_form = WifiForm()

    return render_to_response(template_name, RequestContext(request, {

        "form" : wifi_form, "comment": wifi_comment,

        "user" : user, "profile" : profile, "photo" : photo,

        "talks" : talks, "registration" : registration,

    }))

@login_required

def edit_profile(request, template_name="user/editprofile.html"):

    """Allows user to edit profile

    """

    user = request.user

    profile = user.get_profile()

    if request.method == "POST":

        form = EditProfileForm(data=request.POST,

                               files=request.FILES)

        if form.is_valid():

            photo = request.FILES.get('photo', None)

            filename= None

            if photo:

                filename = handle_uploaded_photo(user, request.FILES['photo'])

            if filename:

                profile.photo = filename

            user.email = form.data.get("email")

            user.first_name = form.data.get("first_name")

            user.last_name = form.data.get("last_name")

            user.save()

            profile.url = form.data.get("url")

            profile.about = form.data.get("about")

            profile.save()

            return set_message_cookie(redirect_to,

                    msg = u"Your profile has been changed.")

    else:

        form = EditProfileForm(initial={"email" : user.email,

                                        "email2" : user.email, # hidden field

                                        "first_name" : user.first_name,

                                        "last_name" : user.last_name,

                                        "url" : profile.url,

                                        "about" : profile.about,

                                        })

    return render_to_response(template_name, RequestContext(request, {

        "form": form

    }))

def login(request, template_name="user/login.html"):

    """Custom view to login or register/login a user.

    Integration of register and login form

    It uses Django's standard AuthenticationForm, though.

    """

    user = request.user

    if user.is_authenticated():

        return set_message_cookie(redirect_to,

                msg = u"Redirected to account from login form.")

    # Using Djangos default AuthenticationForm

    login_form = AuthenticationForm()

    register_form = RegisterForm()

    if request.POST.get("action") == "login":

        login_form = AuthenticationForm(data=request.POST)

        if login_form.is_valid():

            redirect_to = request.POST.get("next")

            # Light security check -- make sure redirect_to isn't garbage.

            if not redirect_to or '//' in redirect_to or ' ' in redirect_to:

            from django.contrib.auth import login

            login(request, login_form.get_user())

            return set_message_cookie(redirect_to, msg = u"You have been logged in.")

    elif request.POST.get("action") == "register":

        register_form = RegisterForm(data=request.POST)

        if register_form.is_valid():

            redirect_to = request.POST.get("next")

            if not redirect_to or '//' in redirect_to or ' ' in redirect_to:

            return set_message_cookie(

                redirect_to, msg = u"You have been registered and logged in.")

    # Get next_url

    next_url = request.REQUEST.get("next")

    if next_url is None:

        next_url = request.META.get("HTTP_REFERER")

    if next_url is None:

    # Get just the path of the url. See django.contrib.auth.views.login for more

    next_url = urlparse(next_url)

    next_url = next_url[2]

    try:

        login_form_errors = login_form.errors["__all__"]

    except KeyError:

        login_form_errors = None

    return render_to_response(template_name, RequestContext(request, {

        "login_form" : login_form,

        "login_form_errors" : login_form_errors,

        "register_form" : register_form,

        "next_url" : next_url,

    }))

def logout(request):

    """Custom method to logout a user.

    The reason to use a custom logout method is just to provide a login and a

    logoutmethod on one place.

    """

    from django.contrib.auth import logout

    logout(request)

    redirect_to = '/'

    return set_message_cookie(redirect_to, msg = u"You have been logged out.")

@login_required

def password(request, template_name="user/password.html"):

    """Changes the password of current user.

    """

    if request.method == "POST":

        form = PasswordChangeForm(request.user, request.POST)

        if form.is_valid():

            form.save()

            return set_message_cookie(redirect_to,

                    msg = u"Your password has been changed.")

    else:

        form = PasswordChangeForm(request.user)

    return render_to_response(template_name, RequestContext(request, {

        "form" : form

    }))

@login_required

def username(request, template_name="user/username.html"):

    """Saves the username from the data form.

    """

    if request.method == "POST":

        username_form = UsernameForm(initial={"username" : request.user.username}, data=request.POST)

        if username_form.is_valid():

            request.user.username = username_form.cleaned_data.get("username")

            request.user.save()

            return set_message_cookie(redirect_to,

                    msg = u"Your username has been changed.")

    else:        

        username_form = UsernameForm(initial={"username" : request.user.username})

    return render_to_response(template_name, RequestContext(request, {

        "form": username_form

    }))

def get_usernames(request):

    """Returns in json the list of ten possible usernames

    starting with the last pattern in the comma separated string

    """

    get_params = request.GET

    authors_str = get_params.get('input')

    if not authors_str:

        return HttpResponse(json.dumps(''))

    authors = authors_str.split(',')

    search_author = authors[-1].strip()

    users = User.objects.filter(

        Q(username__istartswith=search_author) | Q(

        first_name__istartswith=search_author) | Q(

        last_name__istartswith=search_author))

    results = [{'id': '',

                'info': 'plugin_header',

                'value': 'User Names'

              }]

    for user in users:

        results.append(

            {'id': 'author_name',

             'info': str(user.get_full_name()),

             'value': str(user.username)

            })

    json_response = {'results': results}

    return HttpResponse(json.dumps(json_response))