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package com.litongjava.satoken;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import com.litongjava.redis.serializer.ISerializer;
import com.litongjava.redis.serializer.JdkSerializer;

import lombok.extern.slf4j.Slf4j;
import redis.clients.jedis.util.SafeEncoder;

@Slf4j
public class SaJdkSerializer implements ISerializer {

  public static final ISerializer me = new JdkSerializer();

  public byte[] keyToBytes(String key) {
    return SafeEncoder.encode(key);
  }

  public String keyFromBytes(byte[] bytes) {
    return SafeEncoder.encode(bytes);
  }

  public byte[] fieldToBytes(Object field) {
    return valueToBytes(field);
  }

  public Object fieldFromBytes(byte[] bytes) {
    return valueFromBytes(bytes);
  }

  public byte[] valueToBytes(Object value) {
    ObjectOutputStream objectOut = null;
    try {
      ByteArrayOutputStream bytesOut = new ByteArrayOutputStream(1024);
      objectOut = new ObjectOutputStream(bytesOut);
      objectOut.writeObject(value);
      objectOut.flush();
      return bytesOut.toByteArray();
    } catch (Exception e) {
      throw new RuntimeException(e);
    } finally {
      if (objectOut != null)
        try {
          objectOut.close();
        } catch (Exception e) {
          log.error(e.getMessage(), e);
        }
    }
  }

  public Object valueFromBytes(byte[] bytes) {
    if (bytes == null || bytes.length == 0)
      return null;

    ObjectInputStream objectInput = null;
    try {
      ByteArrayInputStream bytesInput = new ByteArrayInputStream(bytes);
      objectInput = new ObjectInputStream(bytesInput);
      return objectInput.readObject();
    } catch (Exception e) {
      throw new RuntimeException(e);
    } finally {
      if (objectInput != null)
        try {
          objectInput.close();
        } catch (Exception e) {
          log.error(e.getMessage(), e);
        }
    }
  }
}