from operator import itemgetter

from pyramid_debugtoolbar.panels import DebugPanel

_ = lambda x: x


class SettingsDebugPanel(DebugPanel):
    """
    A panel to display Pyramid deployment settings for your application (the
    values in ``registry.settings``).
    """
    name = 'settings'
    has_content = True
    template = 'pyramid_debugtoolbar.panels:templates/settings.dbtmako'
    title = _('Settings')
    nav_title = title

    filter_old_settings = [
        'debug_authorization',
        'debug_notfound',
        'debug_routematch',
        'debug_templates',
        'reload_templates',
        'reload_resources',
        'reload_assets',
        'default_locale_name',
        'prevent_http_cache',
    ]

    def __init__(self, request):
        # always repr this stuff before it's sent to the template to appease
        # dumbass stuff like MongoDB's __getattr__ that always returns a
        # Collection, which fails when Jinja tries to look up __html__ on it.
        settings = request.registry.settings
        # filter out non-pyramid prefixed settings to avoid duplication
        if 'pyramid.default_locale_name' in settings:
            reprs = [(k, repr(v)) for k, v in settings.items()
                     if k not in self.filter_old_settings]
        else:
            reprs = [(k, repr(v)) for k, v in settings.items()]
        self.data = {'settings': sorted(reprs, key=itemgetter(0))}