from django.shortcuts import render_to_response, redirect

from django.http import Http404

from django.contrib.auth.decorators import login_required

from django.core.context_processors import csrf

from django.views.decorators.csrf import csrf_protect

from pytask.profile.forms import EditProfileForm

from pytask.profile.utils import get_notification

@login_required

def view_profile(request):

    """ Display the profile information.

    """

    user = request.user

    profile = user.get_profile()

    context = {"user": user,

               "profile": profile,

              }

    return render_to_response("profile/view.html", context)

@login_required

def edit_profile(request):

    """ Make only a few fields editable.

    """

    user = request.user

    profile = user.get_profile()

    context = {"user": user,

               "profile": profile,

              }

    context.update(csrf(request))

    if request.method == "POST":

        form = EditProfileForm(request.POST, instance=profile)

        if form.is_valid():

            form.save()

            return redirect("/accounts/profile/view")

        else:

            context.update({"form":form})

            return render_to_response("profile/edit.html", context)

    else:

        form = EditProfileForm(instance=profile)

        context.update({"form":form})

        return render_to_response("profile/edit.html", context)

@login_required

def browse_notifications(request):

    """ get the list of notifications that are not deleted and display in

    datetime order."""

    user = request.user

    active_notifications = user.notification_sent_to.filter(is_deleted=False).order_by('sent_date').reverse()

    context = {'user':user,

               'notifications':active_notifications,

              }                               

    return render_to_response('profile/browse_notifications.html', context)

@login_required

def view_notification(request, nid):

    """ get the notification depending on nid.

    Display it.

    """

    user = request.user

    newest, newer, notification, older, oldest = get_notification(nid, user)

    if not notification:

        raise Http404

    notification.is_read = True

    notification.save()

    context = {'user':user,

               'notification':notification,

               'newest':newest,

               'newer':newer,

               'older':older,

               'oldest':oldest,

              }

    return render_to_response('profile/view_notification.html', context)

@login_required

def delete_notification(request, nid):

    """ check if the user owns the notification and delete it.

    """

    user = request.user

    newest, newer, notification, older, oldest = get_notification(nid, user)

    if not notification:

        raise Http404

    notification.is_deleted = True

    notification.save()

    context = {'user':user,

               'notification':notification,

               'newest':newest,

               'newer':newer,

               'older':older,

               'oldest':oldest,

              }

    if older:

        redirect_url = "/profile/notf/view/nid=%s"%older.uniq_key

    else:

        redirect_url = "/profile/notf/browse"

    return redirect(redirect_url)

@login_required

def unread_notification(request, nid):

    """ check if the user owns the notification and delete it.

    """

    user = request.user

    newest, newer, notification, older, oldest = get_notification(nid, user)

    if not notification:

        raise Http404

    notification.is_read = False

    notification.save()

    context = {'user':user,

               'notification':notification,

               'newest':newest,

               'newer':newer,

               'older':older,

               'oldest':oldest,

              }

    if older:

        redirect_url = "/profile/notf/view/nid=%s"%older.uniq_key

    else:

        redirect_url = "/profile/notf/browse"

    return redirect(redirect_url)