package alice.codesegment;


import alice.Annotation.AliceAnnotation;
import alice.Annotation.Take;
import alice.datasegment.CommandType;
import alice.datasegment.Receiver;
import javassist.*;
import javassist.tools.reflect.Sample;
import sun.jvm.hotspot.oops.Instance;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.security.ProtectionDomain;

/**
 * Created by e125769 on 11/30/17.
 */
public class CreateCodeSegment {

    private Class cs;

    public CreateCodeSegment(Class cs){
        this.cs = cs;

        ClassPool cp = ClassPool.getDefault();
        cp.appendSystemPath();
        CtClass cc = null;
        try {
            cc = cp.get(cs.getName());
        } catch (NotFoundException e) {
            e.printStackTrace();
        }

        for (Field field : cs.getDeclaredFields()) {
            if (field.isAnnotationPresent(Take.class)){
                System.out.println(field.getName());
                System.out.println(field.getType());
                Take ano = field.getAnnotation(Take.class);
                System.out.println(ano.value());

                try {
                    //Receiverを生成
                    CtField cf = CtField.make("public alice.datasegment.Receiver " + ano.value() + " = ids.create(alice.datasegment.CommandType.TAKE);",cc);
                    cc.addField(cf);

                    //setKey
                    for (CtConstructor ctConstructors : cc.getConstructors()){
                        ctConstructors.setBody(ano.value() + ".setKey(\"" +ano.value() + "\");");
                    }

                    //cc.setModifiers(cc.getModifiers());
                } catch (CannotCompileException e) {
                    e.printStackTrace();
                }
            }
        }

        try {
            ClassLoader loader = ClassLoader.getSystemClassLoader();
            ProtectionDomain domain = Sample.class.getProtectionDomain();
            this.cs = cc.toClass(loader, domain);//ここで止まる。toClass()以前にクラスを１つでもloadしていたら動かない（怒）
        } catch (CannotCompileException e) {
            e.printStackTrace();
        }

    }

    public void run(){
        try {
            cs.newInstance();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }

    }
}