EDIT

/**

* Copyright (C) 2020 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.api.service.media;

import java.awt.Point;

import java.util.ArrayList;

import java.util.List;

/**

 * Factory class to create default transformations

 *

 * @author a.kohlbecker

 * @since Jul 15, 2020

 */

public class DefaultMediaTransformations {

    /**

     * Create default transformations for the diglilib server:

     * <p>

     * Links:

     * <ul>

     * <li>https://robcast.github.io/digilib/scaler-api.html</li>

     * <li>https://robcast.github.io/digilib/iiif-api.html</li>

     * </ul>

     *

     * @return

     */

    static public List<MediaUriTransformation> digilib() {

        List<MediaUriTransformation> defaultTransformations = new ArrayList<>();

        /*

         * dataPortalPreviewImage:

         * image which fits the default preview image size which is

         * for example used in the taxon general page, max extend of the resulting images is 400px

         */

        String dataPortalPreviewImage = "digilib/Scaler/IIIF/$1!$2/full/!400,400/0/default.jpg";

        Point dataPortalPreviewImageSize = new Point(400,400);

        /*

         * universalViewerThumbnail:

         * crop to fit into a 200 x 147 preview box, the uvfix=1 parameter is used to

         * prevent the universal viewer from corrupting the last query parameter. UV appends a parameter t with

         * question mark character which causes problems for the URI query parser see https://dev.e-taxonomy.eu/redmine/issues/9132#note-8

         */

        String universalViewerThumbnail = "digilib/Scaler/?fn=$1/$2&mo=crop&dw=200&dh=147&uvfix=1";

        Point universalViewerThumbnailSize = new Point(200,147);

        MediaUriTransformation tr1 = new MediaUriTransformation();

        tr1.setPathQueryFragment(new SearchReplace("digilib/Scaler/IIIF/([^\\!]+)\\!([^\\/]+)(.*)", dataPortalPreviewImage));

        tr1.setHost(new SearchReplace("pictures.bgbm.org", "pictures.bgbm.org")); // host part only used for matching, no replace!

        tr1.setMimeType("image/jpeg");

        tr1.setWidth(dataPortalPreviewImageSize.x);

        tr1.setHeight(dataPortalPreviewImageSize.y);

        MediaUriTransformation tr2 = new MediaUriTransformation();

        tr2.setPathQueryFragment(new SearchReplace("digilib/Scaler/IIIF/([^\\!]+)\\!([^\\/]+)(.*)", universalViewerThumbnail));

        tr2.setHost(new SearchReplace("pictures.bgbm.org", "pictures.bgbm.org")); // host part only used for matching, no replace!

        tr2.setMimeType("image/jpeg");

        tr2.setWidth(universalViewerThumbnailSize.x);

        tr2.setHeight(universalViewerThumbnailSize.y);

        MediaUriTransformation tr3 = new MediaUriTransformation();

        tr3.setPathQueryFragment(new SearchReplace("digilib/Scaler/\\?fn=([^\\\\/]+)/(\\w+)(.*)", dataPortalPreviewImage));

        tr3.setHost(new SearchReplace("pictures.bgbm.org", "pictures.bgbm.org")); // host part only used for matching, no replace!

        tr3.setMimeType("image/jpeg");

        tr3.setWidth(dataPortalPreviewImageSize.x);

        tr3.setHeight(dataPortalPreviewImageSize.y);

        MediaUriTransformation tr4 = new MediaUriTransformation();

        tr4.setPathQueryFragment(new SearchReplace("digilib/Scaler/\\?fn=([^\\\\/]+)/(\\w+)(.*)", universalViewerThumbnail));

        tr4.setHost(new SearchReplace("pictures.bgbm.org", "pictures.bgbm.org")); // host part only used for matching, no replace!

        tr4.setMimeType("image/jpeg");

        tr4.setWidth(universalViewerThumbnailSize.x);

        tr4.setHeight(universalViewerThumbnailSize.y);

        defaultTransformations.add(tr2);

        defaultTransformations.add(tr1);

        defaultTransformations.add(tr3);

        defaultTransformations.add(tr4);

        return defaultTransformations;

    }

}