package com.bitbill.util;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Base64;
import java.util.zip.Deflater;
import java.util.zip.Inflater;

public class BBSignEncoding {

	public static byte[] zlibCompress(byte[] data) {
	  byte[] output;
	
	  //LEVEL 5 to make it the same as iOS COMPRESSION_ZLIB
	  Deflater compresser = new Deflater(5,true);
	
	  compresser.reset();
	  compresser.setInput(data);
	  compresser.finish();
	  ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length);
	  try {
	      byte[] buf = new byte[1024];
	      while (!compresser.finished()) {
	          int i = compresser.deflate(buf);
	          bos.write(buf, 0, i);
	      }
	      output = bos.toByteArray();
	  } catch (Exception e) {
	      output = data;
	      e.printStackTrace();
	  } finally {
	      try {
	          bos.close();
	      } catch (IOException e) {
	          e.printStackTrace();
	      }
	  }
	  compresser.end();
	  return output;
	}
	
	public static byte[] zlibDecompress(byte[] data) {
	  byte[] output;
	
	  Inflater decompresser = new Inflater(true);
	  decompresser.reset();
	  decompresser.setInput(data);
	
	  ByteArrayOutputStream o = new ByteArrayOutputStream(data.length);
	  try {
	      byte[] buf = new byte[1024];
	      while (!decompresser.finished()) {
	          int i = decompresser.inflate(buf);
	          o.write(buf, 0, i);
	      }
	      output = o.toByteArray();
	  } catch (Exception e) {
	      output = data;
	      e.printStackTrace();
	  } finally {
	      try {
	          o.close();
	      } catch (IOException e) {
	          e.printStackTrace();
	      }
	  }
	
	  decompresser.end();
	  return output;
	  
	}
	

	public static void main(String[] args) throws Exception {
		//test qrcode
		String qrCodeStr = "bb_tx: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";
		String str = qrCodeStr.substring(6); //remove bb_tx: prefix
		
		//decompress
		byte[] decodedBytes = Base64.getDecoder().decode(str.getBytes("UTF-8"));
		String qrstrDecoded = new String(zlibDecompress(decodedBytes));
		
		System.out.println(qrstrDecoded);
		//print
		//{  "amount" : "1000000",  "sendContactId" : "tomtan",  "transactionType" : "TRX",  "hexTx" : "{\"txID\":\"bc7b6bd48de948fc0164da88913adb5639fda2af9a8f03cbfea3b810522f90e0\",\"raw_data\":{\"contract\":[{\"parameter\":{\"value\":{\"amount\":1000000,\"owner_address\":\"41c533c9e29b32cf7b3ef97aa3609c71c2ef5fb999\",\"to_address\":\"417e0ed463557e9ebbec146a1f91afdec5a6fbdcb1\"},\"type_url\":\"type.googleapis.com\/protocol.TransferContract\"},\"type\":\"TransferContract\"}],\"ref_block_bytes\":\"9187\",\"ref_block_hash\":\"d32339e6c46a5a8c\",\"expiration\":1709546766000,\"timestamp\":1709463906000},\"raw_data_hex\":\"0a0291872208d32339e6c46a5a8c40b0fdb5c7e0315a67080112630a2d747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e5472616e73666572436f6e747261637412320a1541c533c9e29b32cf7b3ef97aa3609c71c2ef5fb9991215417e0ed463557e9ebbec146a1f91afdec5a6fbdcb118c0843d70d0cdf49fe031\",\"visible\":false,\"signature\":[\"b77166b6c44bc02f91fe0993c8abf47d18055136aba1c64e82fdd851dc186ea6473b5a843ec34e416d83ef7d771923cb8baa7ff54d04832f4020d89ebe1c3dfd1C\"]}",  "symbol" : "TRX",  "remark" : "",  "coinType" : "25",  "receiveContactId" : "sherry",  "to" : "TMTjucQ73f32Yw4Xx8Gm1dH1mdFrFjn9Lb",  "address" : "TTwvABiXZMzVRZ2LJxHWoUuxuRXRQ8MzBo",  "fee" : "100000",  "decimals" : "6",  "nonce" : "0",  "txHash" : "",  "contractAddress" : "TRX"}
		
		//compress
		//byte[] encodedBytes = Base64.encode(StringUtils.zlibCompress(jsonstr.getBytes("utf-8")), Base64.NO_WRAP);
		//mQrcodeMvpPresenter.createQrcode(AppConstants.WatchWallet.PREFIX_SIGN + new String(encodedBytes));
	
	}

}