Source code for invenio_formatter.views

# -*- coding: utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 2015, 2016 CERN.
#
# Invenio is free software; you can redistribute it
# and/or modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# Invenio is distributed in the hope that it will be
# useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Invenio; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307, USA.
#
# In applying this license, CERN does not
# waive the privileges and immunities granted to it by virtue of its status
# as an Intergovernmental Organization or submit itself to any jurisdiction.

"""View method for Invenio-Formatter."""

from __future__ import absolute_import, print_function

from flask import Blueprint, Response, current_app


def create_badge_blueprint(allowed_types):
    """Create the badge blueprint.

    :param allowed_types: A list of allowed types.
    :returns: A Flask blueprint.
    """
    from invenio_formatter.context_processors.badges import \
        generate_badge_png, generate_badge_svg

    blueprint = Blueprint(
        'invenio_formatter_badges',
        __name__,
        template_folder='templates',
    )

    @blueprint.route(
        '/badge/<any({0}):title>/<path:value>.<any(svg, png):ext>'.format(
            ', '.join(allowed_types)))
    def badge(title, value, ext='svg'):
        """Generate a badge response."""
        if ext == 'svg':
            generator = generate_badge_svg
            mimetype = 'image/svg+xml'
        elif ext == 'png':
            generator = generate_badge_png
            mimetype = 'image/png'
        return Response(
            generator(
                current_app.config['FORMATTER_BADGES_TITLE_MAPPING'].get(
                    title, title),
                value),
            mimetype=mimetype)

    return blueprint