package me.mayuan.test;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.util.HashMap;

public class Everybody {

    @Person(NAME="tommy",AGE=26,SEX="boy")
    public String tommy = "I am a gay boy";
    @Person(NAME="army",AGE=14,SEX="girl")
    public String army = "I like girls naked body";


    public static HashMap<String, People> createMap(){
        long startTime=System.nanoTime();
        Everybody ea = new Everybody();
        HashMap<String,People> people = new HashMap<String,People>();
        Field[] fields = ea.getClass().getDeclaredFields();
        for(Field f : fields) {
            if(!f.isAccessible())f.setAccessible(true);
            if(f.isAnnotationPresent(Person.class)) {
                Annotation an = f.getDeclaredAnnotation(Person.class);
                Person p = (Person)an;
                String name = p.NAME();
                int age = p.AGE();
                String sex = p.SEX();
                String msg = "";
                try {
                    msg = (String)f.get(ea);

                } catch (IllegalArgumentException | IllegalAccessException e) {
                    e.printStackTrace();
                }
                People peo = new People(name,age,sex, msg);
                people.put(f.getName(), peo);
            }
        }
        long endTime=System.nanoTime();
        System.out.println("Process Running Time:"+(endTime-startTime)+"ns");
        return people;
    }

    public static HashMap<String, People> createMapByHand(){
        long startTime=System.nanoTime();
        HashMap<String,People> people = new HashMap<String,People>();
        people.put("tommy", new People("tommy", 26, "boy", "I am a gay boy"));
        people.put("army", new People("army", 14, "girl", "I like girls naked body"));
        long endTime=System.nanoTime();
        System.out.println("Process Running Time2:"+(endTime-startTime)+"ns");
        return people;
    }
}