from django.db.models import Q

from django.contrib.auth.decorators import login_required

from cm.security import get_viewable_comments, get_viewable_activities

from cm.message import display_message

from cm.models import Comment, Activity, UserProfile, Notification

from cm.models_utils import Email

from cm.security import has_global_perm

from cm.security import get_texts_with_perm, has_perm

from cm.utils import get_among, get_int

from cm.utils.mail import send_mail

from cm.views.user import cm_login

from django import forms

from django.conf import settings

from django.contrib.auth.forms import AuthenticationForm

from django.core.urlresolvers import reverse

from django.http import HttpResponse, HttpResponseRedirect, Http404

from django.shortcuts import render_to_response

from django.template import RequestContext

from django.template.loader import render_to_string

from django.utils.translation import get_language, ugettext as _, ugettext_lazy

from django.views.generic.list_detail import object_list

from cm.models import Text, TextVersion, Attachment, Comment, Configuration, Activity

ACTIVITY_PAGINATION = 10

RECENT_TEXT_NB = 5

RECENT_COMMENT_NB = RECENT_TEXT_NB

MODERATE_NB = 5

def dashboard(request):

    request.session.set_test_cookie()

    if request.user.is_authenticated():

        act_view = {

                    'view_texts' : get_int(request.GET, 'view_texts', 1),

                    'view_comments' : get_int(request.GET, 'view_comments', 1),

                    'view_users' : get_int(request.GET, 'view_users', 1),

                    }

        paginate_by = get_int(request.GET, 'paginate', ACTIVITY_PAGINATION)

        # texts with can_view_unapproved_comment perms

        moderator_texts = get_texts_with_perm(request, 'can_view_unapproved_comment')

        viewer_texts = get_texts_with_perm(request, 'can_view_approved_comment')

        all_texts_ids = [t.id for t in moderator_texts] + [t.id for t in viewer_texts]

        span = get_among(request.GET, 'span', ('day', 'month', 'week',), 'week')        

        template_dict = { 

                         'span' : span,

                         'last_texts' : get_texts_with_perm(request, 'can_view_text').order_by('-modified')[:RECENT_TEXT_NB],

                         'last_comments' : Comment.objects.filter(text_version__text__in=all_texts_ids).order_by('-created')[:RECENT_COMMENT_NB], # TODO: useful?

                         #'last_users' : User.objects.all().order_by('-date_joined')[:5],

                         }

        template_dict.update(act_view)

        #selected_activities = []

        #[selected_activities.extend(Activity.VIEWABLE_ACTIVITIES[k]) for k in act_view.keys() if act_view[k]]

        activities = get_viewable_activities(request, act_view)

        if not has_perm(request, 'can_manage_workspace'):

            template_dict['to_mod_profiles'] = []

        else:

            template_dict['to_mod_profiles'] = UserProfile.objects.filter(user__is_active=False).filter(is_suspended=True).order_by('-user__date_joined')[:MODERATE_NB]

        template_dict['to_mod_comments'] = Comment.objects.filter(state='pending').filter(text_version__text__in=moderator_texts).order_by('-modified')[:MODERATE_NB - len(template_dict['to_mod_profiles'])]

        activities = activities.order_by('-created')

        return object_list(request, activities,

                           template_name='site/dashboard.html',

                           paginate_by=paginate_by,

                           extra_context=template_dict,

                           )

    else:

        if request.method == 'POST':

            form = AuthenticationForm(request, request.POST)

            if form.is_valid():

                user = form.get_user()

                user.backend = 'django.contrib.auth.backends.ModelBackend'

                cm_login(request, user)            

                display_message(request, _(u"You're logged in!"))

                return HttpResponseRedirect(reverse('index'))

        else:

            form = AuthenticationForm()        

        public_texts = get_texts_with_perm(request, 'can_view_text').order_by('-modified')

        template_dict = {

                         'form' : form,

                         'public_texts' : public_texts,

                         }

        return render_to_response('site/non_authenticated_index.html', template_dict, context_instance=RequestContext(request))

class HeaderContactForm(forms.Form):                 

    name = forms.CharField(

                           max_length=100,

                           label=ugettext_lazy(u"Your name"),

                           )

    email = forms.EmailField(label=ugettext_lazy(u"Your email address"),)

class BodyContactForm(forms.Form):

    title = forms.CharField(label=ugettext_lazy(u"Subject of the message"), max_length=100)

    body = forms.CharField(label=ugettext_lazy(u"Body of the message"), widget=forms.Textarea)

    copy = forms.BooleanField(

                              label=ugettext_lazy(u"Send me a copy of the email"),

                              #help_text=ugettext_lazy(u"also send me a copy of the email"),                               

                              required=False)

class ContactForm(HeaderContactForm, BodyContactForm):

    pass

def contact(request):

    if request.method == 'POST':

        form = BodyContactForm(request.POST) if request.user.is_authenticated() else ContactForm(request.POST) 

        if form.is_valid():

            name = form.cleaned_data.get('name', None) or request.user.username

            email = form.cleaned_data.get('email', None) or request.user.email

            message = render_to_string('email/site_contact_email.txt',

                                       {

                                         'body' : form.cleaned_data['body'],

                                         'name' : name,

                                         'email' : email,

                                         'referer' : request.META.get('HTTP_REFERER', None),

                                          }, context_instance=RequestContext(request))

            subject = form.cleaned_data['title']

            # Email subject *must not* contain newlines

            subject = ''.join(subject.splitlines())

            dest = settings.CONTACT_DEST

            send_mail(subject, message, email, [dest])

            if form.cleaned_data['copy']:

                my_subject = _(u"Copy of message:") + u" " + subject

                send_mail(my_subject, message, email, [email])

            display_message(request, _(u"Email sent. We will get back to you as quickly as possible."))                

            redirect_url = reverse('index')            

            return HttpResponseRedirect(redirect_url)

    else:        

        form = BodyContactForm() if request.user.is_authenticated() else ContactForm()

    return render_to_response('site/contact.html', {'form': form}, context_instance=RequestContext(request))

def global_feed(request):

    pass

from cm.role_models import role_models_choices

from django.utils.safestring import mark_safe

class SettingsForm(forms.Form):

    workspace_name = forms.CharField(label=ugettext_lazy("Workspace name"),

                                     widget=forms.TextInput,

                                     )

    workspace_tagline = forms.CharField(label=ugettext_lazy("Workspace tagline"),

                                        widget=forms.TextInput,

                                        required=False,

                                        )

    workspace_registration = forms.BooleanField(label=ugettext_lazy("Workspace registration"),

                                                help_text=ugettext_lazy("Can users register themselves into the workspace? (if not, only invitations by managers can create new users)"),

                                                required=False,

                                                )

    workspace_registration_moderation = forms.BooleanField(label=ugettext_lazy("Workspace registration moderation"),

                                                           help_text=ugettext_lazy("Should new users be moderated (registration will require manager's approval)?"),

                                                           required=False,

                                                           )

    workspace_role_model = forms.ChoiceField(label=ugettext_lazy("Role model"),

                                             help_text=(ugettext_lazy("Change the roles available in the workspace")),

                                             choices=role_models_choices,

                                             required=False,

                                             )

    # fields to save in the Configuration objects

    conf_fields = ['workspace_name', 'workspace_tagline', 'workspace_registration', 'workspace_registration_moderation', 'workspace_role_model']

    def __init__(self, data=None, initial=None):

        forms.Form.__init__(self, data=data, initial=initial)

        for field in self.fields:

            if field in self.conf_fields:

                self.fields[field].initial = Configuration.objects.get_key(field)

    def save(self):

        for field in self.fields:

            if field in self.conf_fields:

                val = self.cleaned_data[field]

                Configuration.objects.set_key(field, val)

@has_global_perm('can_manage_workspace')

def settingss(request):

    if request.method == 'POST':

            display_message(request, _(u'Settings saved'))

    else:

        form = SettingsForm()

    return render_to_response('site/settings.html', {'form' : form, 'help_links' : {'workspace_role_model':'role_model'}}, context_instance=RequestContext(request))

def help(request):

    return render_to_response('site/help.html', context_instance=RequestContext(request))