from django.conf import settings
from django.utils.translation import gettext as _

import logging
import importlib

from mycreole import url_upload
from themes import color_icon_url

try:
    from config import APP_NAME as ROOT_LOGGER_NAME
except ImportError:
    ROOT_LOGGER_NAME = 'root'
logger = logging.getLogger(ROOT_LOGGER_NAME).getChild(__name__)

NEW_ATTACHMENT_UID = 'new_attachment'


def context_adaption(context, request, title, rel_path, **kwargs):
    def get_method(import_string):
        class_data = import_string.split(".")
        module_path = ".".join(class_data[:-1])
        class_str = class_data[-1]
        #
        module = importlib.import_module(module_path)
        return getattr(module, class_str)

    def log_warning(method_name, e):
        logger.warning('Could not import %s method for extending bars: %s - %s', method_name, type(e).__name__, e)

    context.set_additional_title(title)
    for key in ["menubar", "navibar"]:
        try:
            method_name = settings.MYCREOLE_BAR[key]
        except (AttributeError, KeyError) as e:
            log_warning(key, e)
        else:
            method = get_method(method_name)
            method(context, request, caller_name="attachments")
    add_new(request, context[context.ACTIONBAR], rel_path, kwargs.get('next'))
    for key in kwargs:
        context[key] = kwargs[key]
    logger.debug("context adapted: %s", repr(context))


def add_new(request, bar, rel_path, nxt):
    bar.append_entry(
        NEW_ATTACHMENT_UID,                         # uid
        _('New Attachment'),                        # name
        color_icon_url(request, 'plus.png'),        # icon
        url_upload(request, rel_path, nxt),         # url
        True,                                       # left
        False                                       # active
    )