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/**
 * Copyright 2018 jianggujin (www.jianggujin.com).
 * 
 * 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.jianggujin.http.response;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.UUID;

import com.jianggujin.http.util.JDataUtils;

/**
 * 文件响应
 * 
 * @author jianggujin
 *
 */
public class JFileResponse extends JAbstractResponse {
    private File file;

    public JFileResponse() {
        this((File) null);
    }

    public JFileResponse(String path) {
        this(new File(path));
    }

    public JFileResponse(File file) {
        try {
            if (file == null) {
                file = File.createTempFile(UUID.randomUUID().toString(), ".tmp");
                file.deleteOnExit();
            }
            this.file = file;
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    protected void dealData(InputStream stream) throws IOException {
        File parent = file.getParentFile();
        if (parent != null && !parent.exists()) {
            parent.mkdirs();
        }
        FileOutputStream out = new FileOutputStream(file);
        JDataUtils.crossStreams(stream, out);
        out.close();
        this.data = file;
    }

    public String getFile() {
        return (String) this.data;
    }
}