/*******************************************************************************
 * Copyright 2017 Bstek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package com.bstek.ureport.image;

import com.bstek.ureport.Utils;
import com.bstek.ureport.exception.ReportComputeException;
import com.bstek.ureport.provider.image.ImageProvider;
import org.springframework.context.ApplicationContext;

import java.io.IOException;
import java.io.InputStream;
import java.util.Collection;
import java.util.logging.Logger;

/**
 * @author Jacky.gao
 * @since 2017年3月20日
 */
public class StaticImageProcessor implements ImageProcessor<String> {
    private final Logger log = Logger.getGlobal();

    @Override
    public InputStream getImage(String path) {
        Collection<ImageProvider> imageProviders = Utils.getImageProviders();
        ImageProvider targetImageProvider = null;
        for (ImageProvider provider : imageProviders) {
            if (provider.support(path)) {
                targetImageProvider = provider;
                break;
            }
        }
        if (targetImageProvider == null) {
            throw new ReportComputeException("Unsupport image path :" + path);
        }
        try {
            return targetImageProvider.getImage(path);
        } catch (Exception ex) {
            ApplicationContext applicationContext = Utils.getApplicationContext();
            log.warning("Image [" + path + "] not exist,use default picture.");
            String imageNotExistPath = "classpath:com/bstek/ureport/image/image-not-exist.jpg";
            try {
                return applicationContext.getResource(imageNotExistPath).getInputStream();
            } catch (IOException e1) {
                throw new ReportComputeException(e1);
            }
        }
    }
}
