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from google.appengine.ext import webapp, db

from google.appengine.ext.webapp import template

from handlers.updatebase import UpdateBase

from model.queues import queues

from model.workitems import WorkItems

from datetime import datetime

class UpdateWorkItems(UpdateBase):

    def get(self):

        self.response.out.write(template.render("templates/updateworkitems.html", None))

    def _work_items_for_queue(self, queue_name):

        if queue_name not in queues:

            self.response.out.write("\"%s\" is not in queues %s" % (queue_name, queues))

            return None

        work_items = WorkItems.all().filter("queue_name =", queue_name).get()

        if not work_items:

            work_items = WorkItems()

            work_items.queue_name = queue_name

        return work_items

    def _parse_work_items_string(self, items_string):

        # Our parsing could be much more robust.

        item_strings = items_string.split(" ") if items_string else []

        return map(int, item_strings)

    def _work_items_from_request(self):

        queue_name = self.request.get("queue_name")

        work_items = self._work_items_for_queue(queue_name)

        if not work_items:

            return None

        items_string = self.request.get("work_items")

        work_items.item_ids = self._parse_work_items_string(items_string)

        work_items.date = datetime.now()

        return work_items

    def post(self):

        work_items = self._work_items_from_request()

        if not work_items:

            self.response.set_status(500)

            return

        work_items.put()