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package com.wkit.lost.mybatis.invoke;

import com.wkit.lost.mybatis.utils.SerializationUtil;
import com.wkit.lost.mybatis.exception.MyBatisException;
import com.wkit.lost.mybatis.lambda.Property;
import lombok.Getter;

import java.io.*;

/**
 * {@link java.lang.invoke.SerializedLambda}
 * @author wvkity
 */
@Getter
public class SerializedLambda implements Serializable {

    private static final long serialVersionUID = 8025925345765570181L;

    private Class capturingClass;
    private String functionalInterfaceClass;
    private String functionalInterfaceMethodName;
    private String functionalInterfaceMethodSignature;
    private String implClass;
    private String implMethodName;
    private String implMethodSignature;
    private int implMethodKind;
    private String instantiatedMethodType;
    private Object[] capturedArgs;

    /**
     * 通过反序列化转换Class
     * @param lambda {@link Property}对象
     * @param     类型
     * @param     返回值类型
     * @return {@link SerializedLambda}对象
     */
    public static  SerializedLambda convert( Property lambda ) {
        byte[] bytes = SerializationUtil.serialize( lambda );
        try ( ObjectInputStream inputStream = new ObjectInputStream( new ByteArrayInputStream( bytes ) ) {
            @Override
            protected Class resolveClass( ObjectStreamClass desc ) throws IOException, ClassNotFoundException {
                Class clazz = super.resolveClass( desc );
                return clazz == java.lang.invoke.SerializedLambda.class ? SerializedLambda.class : clazz;
            }
        } ) {
            return ( SerializedLambda ) inputStream.readObject();
        } catch ( ClassNotFoundException | IOException e ) {
            throw new MyBatisException( e.getMessage(), e );
        }
    }

    @Override
    public String toString() {
        return super.toString() +
                this.implClass.replace( "/", "." ) +
                "#" + this.implMethodName;
    }

}