/*
 * This file is part of LSPosed.
 *
 * LSPosed 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 3 of the License, or
 * (at your option) any later version.
 *
 * LSPosed 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 LSPosed.  If not, see <https://www.gnu.org/licenses/>.
 *
 * Copyright (C) 2020 EdXposed Contributors
 * Copyright (C) 2021 LSPosed Contributors
 */

package io.github.lsposed.manager.util.svg;

import androidx.annotation.NonNull;

import com.bumptech.glide.load.Options;
import com.bumptech.glide.load.ResourceDecoder;
import com.bumptech.glide.load.engine.Resource;
import com.bumptech.glide.load.resource.SimpleResource;
import com.caverock.androidsvg.SVG;
import com.caverock.androidsvg.SVGParseException;

import java.io.IOException;
import java.io.InputStream;

import static com.bumptech.glide.request.target.Target.SIZE_ORIGINAL;

/**
 * Decodes an SVG internal representation from an {@link InputStream}.
 */
public class SvgDecoder implements ResourceDecoder<InputStream, SVG> {

    @Override
    public boolean handles(@NonNull InputStream source, @NonNull Options options) {
        // TODO: Can we tell?
        return true;
    }

    public Resource<SVG> decode(
            @NonNull InputStream source, int width, int height, @NonNull Options options)
            throws IOException {
        try {
            SVG svg = SVG.getFromInputStream(source);
            if (width != SIZE_ORIGINAL) {
                svg.setDocumentWidth(width);
            }
            if (height != SIZE_ORIGINAL) {
                svg.setDocumentHeight(height);
            }
            return new SimpleResource<>(svg);
        } catch (SVGParseException ex) {
            throw new IOException("Cannot load SVG from stream", ex);
        }
    }
}
