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import re

from model.activeworkitems import ActiveWorkItems
from model.workitems import WorkItems


class Queue(object):

    # Eventually the list of queues may be stored in the data store.
    _all_queue_names = [
        "commit-queue",
        "style-queue",
        "chromium-ews",
        "qt-ews",
        "gtk-ews",
        "mac-ews",
        "win-ews",
        "efl-ews",
        "cr-mac-ews",
    ]

    def __init__(self, name):
        assert(name in self._all_queue_names)
        self._name = name

    @classmethod
    def queue_with_name(cls, queue_name):
        if queue_name not in cls._all_queue_names:
            return None
        return Queue(queue_name)

    @classmethod
    def all(cls):
        return [Queue(name) for name in cls._all_queue_names]

    @classmethod
    def all_ews(cls):
        return [queue for queue in cls.all() if queue.is_ews()]

    def name(self):
        return self._name

    def work_items(self):
        return WorkItems.lookup_by_queue(self._name)

    # FIXME: active_work_items is a bad name for this lock-table.
    def active_work_items(self):
        return ActiveWorkItems.lookup_by_queue(self._name)

    def _caplitalize_after_dash(self, string):
        return "-".join([word[0].upper() + word[1:] for word in string.split("-")])

    # For use in status bubbles or table headers
    def short_name(self):
        # HACK: chromium-ews is incorrectly named.
        short_name = self._name.replace("chromium-ews", "Cr-Linux-ews")
        short_name = short_name.replace("-ews", "")
        short_name = short_name.replace("-queue", "")
        return self._caplitalize_after_dash(short_name.capitalize())

    def display_name(self):
        # HACK: chromium-ews is incorrectly named.
        display_name = self._name.replace("chromium-ews", "cr-linux-ews")

        display_name = display_name.replace("-", " ")
        display_name = display_name.replace("cr", "chromium")
        display_name = display_name.title()
        display_name = display_name.replace("Ews", "EWS")
        return display_name

    _dash_regexp = re.compile("-")

    def name_with_underscores(self):
        return self._dash_regexp.sub("_", self._name)

    def is_ews(self):
        # Note: The style-queue is just like an EWS in that it has an EWS
        # bubble, and it works off of the r? patches.  If at some later
        # point code wants to not treat the style-queue as an EWS
        # (e.g. expecting is_ews() queues to have build results?)
        # then we should fix all callers and change this check.
        return self._name.endswith("-ews") or self._name == "style-queue"