#
# This file is part of pretix (Community Edition).
#
# Copyright (C) 2014-2020 Raphael Michel and contributors
# Copyright (C) 2020-2021 rami.io GmbH and contributors
#
# This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
# Public License as published by the Free Software Foundation in version 3 of the License.
#
# ADDITIONAL TERMS APPLY: Pursuant to Section 7 of the GNU Affero General Public License, additional terms are
# applicable granting you additional permissions and placing additional restrictions on your usage of this software.
# Please refer to the pretix LICENSE file to obtain the full terms applicable to this work. If you did not receive
# this file, see <https://pretix.eu/about/en/license>.
#
# This program 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 Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
# <https://www.gnu.org/licenses/>.
#
from arabic_reshaper import ArabicReshaper
from django.conf import settings
from django.utils.functional import SimpleLazyObject
from PIL import Image
from reportlab.lib.utils import ImageReader


class ThumbnailingImageReader(ImageReader):
    def resize(self, width, height, dpi):
        if width is None:
            width = height * self._image.size[0] / self._image.size[1]
        if height is None:
            height = width * self._image.size[1] / self._image.size[0]
        self._image.thumbnail(
            size=(int(width * dpi / 72), int(height * dpi / 72)),
            resample=Image.Resampling.BICUBIC
        )
        self._data = None
        return width, height

    def _jpeg_fh(self):
        # Bypass a reportlab-internal optimization that falls back to the original
        # file handle if the file is a JPEG, and therefore does not respect the
        # (smaller) size of the modified image.
        return None

    def _read_image(self, fp):
        return Image.open(fp, formats=settings.PILLOW_FORMATS_IMAGE)


reshaper = SimpleLazyObject(lambda: ArabicReshaper(configuration={
    'delete_harakat': True,
    'support_ligatures': False,
}))