import logging
import traceback

from pylons import tmpl_context as c, url
from pylons.controllers.util import redirect

from rhodecode.lib.base import BaseController, render
from rhodecode.model.db import Notification

from rhodecode.model.notification import NotificationModel
from rhodecode.lib.auth import LoginRequired
from rhodecode.lib import helpers as h
from rhodecode.model.meta import Session


log = logging.getLogger(__name__)

class NotificationsController(BaseController):
    """REST Controller styled on the Atom Publishing Protocol"""
    # To properly map this controller, ensure your config/routing.py
    # file has a resource setup:
    #     map.resource('notification', 'notifications', controller='_admin/notifications', 
    #         path_prefix='/_admin', name_prefix='_admin_')

    @LoginRequired()
    def __before__(self):
        super(NotificationsController, self).__before__()


    def index(self, format='html'):
        """GET /_admin/notifications: All items in the collection"""
        # url('notifications')
        c.user = self.rhodecode_user
        c.notifications = NotificationModel()\
                            .get_for_user(self.rhodecode_user.user_id)
        return render('admin/notifications/notifications.html')

    def create(self):
        """POST /_admin/notifications: Create a new item"""
        # url('notifications')

    def new(self, format='html'):
        """GET /_admin/notifications/new: Form to create a new item"""
        # url('new_notification')

    def update(self, notification_id):
        """PUT /_admin/notifications/id: Update an existing item"""
        # Forms posted to this method should contain a hidden field:
        #    <input type="hidden" name="_method" value="PUT" />
        # Or using helpers:
        #    h.form(url('notification', notification_id=ID),
        #           method='put')
        # url('notification', notification_id=ID)

    def delete(self, notification_id):
        """DELETE /_admin/notifications/id: Delete an existing item"""
        # Forms posted to this method should contain a hidden field:
        #    <input type="hidden" name="_method" value="DELETE" />
        # Or using helpers:
        #    h.form(url('notification', notification_id=ID),
        #           method='delete')
        # url('notification', notification_id=ID)

        try:
            no = Notification.get(notification_id)
            owner = lambda: (no.notifications_to_users.user.user_id
                             == c.rhodecode_user.user_id)
            if h.HasPermissionAny('hg.admin', 'repository.admin')() or owner:
                    NotificationModel().delete(c.rhodecode_user.user_id, no)
                    Session.commit()
                    return 'ok'
        except Exception:
            Session.rollback()
            log.error(traceback.format_exc())
        return 'fail'

    def show(self, notification_id, format='html'):
        """GET /_admin/notifications/id: Show a specific item"""
        # url('notification', notification_id=ID)
        c.user = self.rhodecode_user
        no = Notification.get(notification_id)

        owner = lambda: (no.notifications_to_users.user.user_id
                         == c.user.user_id)
        if no and (h.HasPermissionAny('hg.admin', 'repository.admin')() or owner):
            unotification = NotificationModel()\
                            .get_user_notification(c.user.user_id, no)

            # if this association to user is not valid, we don't want to show
            # this message
            if unotification:
                if unotification.read is False:
                    unotification.mark_as_read()
                    Session.commit()
                c.notification = no

                return render('admin/notifications/show_notification.html')

        return redirect(url('notifications'))

    def edit(self, notification_id, format='html'):
        """GET /_admin/notifications/id/edit: Form to edit an existing item"""
        # url('edit_notification', notification_id=ID)