/*
 * Copyright (c) 2018-2019. Developed by Hedgecode.
 *
 * 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 org.hedgecode.chess.qrcode.zip;

import java.io.File;

import com.google.zxing.common.DecoderResult;

import org.hedgecode.chess.qrcode.ChessQRCodeException;
import org.hedgecode.chess.qrcode.ChessQRCodeMode;
import org.hedgecode.chess.qrcode.ChessQRCodeReader;
import org.hedgecode.chess.qrcode.ChessQRResult;

/**
 *
 *
 * @author Dmitry Samoshin aka gotty
 */
public class ZipChessQRCodeReader extends ChessQRCodeReader {

    private static ZipChessQRCodeReader _instance = new ZipChessQRCodeReader();

    protected ZipChessQRCodeReader() {
        super();
    }

    @Override
    protected ChessQRResult createResult(DecoderResult decoderResult) throws ChessQRCodeException {
        String result = decoderResult.getText();
        ChessQRCodeMode mode = ChessQRResult.getMode(result);

        if (ChessQRCodeMode.ZIP.equals(mode)) {
            String contents = ZipContentInflater.inflate(
                    ChessQRResult.getContents(result)
            );

            mode = ChessQRResult.getMode(contents);
            if (mode == null) {
                throw new ChessQRCodeException(
                        ChessQRCodeException.Type.READ, "read.unknown.chess.mode"
                );
            }

            return new ChessQRResult(
                    mode,
                    ChessQRResult.getContents(contents)
            );
        } else {
            return super.createResult(decoderResult);
        }
    }

    public static ZipChessQRCodeReader getInstance() {
        return _instance;
    }


    public static void main(String[] args) {
        try {
            ChessQRResult qrCodeResult = ZipChessQRCodeReader.getInstance().read(
                    new File("qrcode.png")
            );
            System.out.println("Decoded format = " + qrCodeResult.getMode());
            System.out.println("Decoded text = " + qrCodeResult.getContents());
        } catch (ChessQRCodeException e) {
            System.out.println("Could not decode QR Code. Exception: " + e.getMessage());
        }
    }

}