EventsApi.java

package me.kofest.eventsapi;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;

import org.bukkit.event.Event;
import org.bukkit.plugin.java.JavaPlugin;

import me.kofest.eventsapi.api.ApiHandler;
import me.kofest.eventsapi.api.EventType;
import me.kofest.eventsapi.thread.EventsThread;

public class EventsApi extends JavaPlugin {
    private static EventsApi instance;

    public static EventsApi getInst() {
        return instance;
    }

    @Override
    public void onEnable() {
        instance = this;
        getServer().getPluginManager().registerEvents(new EventsHandler(), this);
    }

    private static final List<Object> handlers = new ArrayList<>();

    public static final void registerHandler(Object handlerClass) {
        handlers.add(handlerClass);
    }

    public static final void unregisterHandler(Object handlerClass) {
        handlers.remove(handlerClass);
    }

    public static final void callEvent(Event event) {
        synchronized (instance) {
            new EventsThread() {
                @Override
                public void run() {
                    for (Object handler : handlers) {
                        for (Method m : handler.getClass().getDeclaredMethods()) {
                            if (m.isAnnotationPresent(ApiHandler.class)) {
                                ApiHandler ah = m.getAnnotation(ApiHandler.class);
                                EventType et = ah.eventType();
                                if (event.getEventName().equalsIgnoreCase(et.toString())) {
                                    try {
                                        m.invoke(handler, event);
                                    } catch (IllegalAccessException | IllegalArgumentException
                                            | InvocationTargetException e) {
                                        e.printStackTrace();
                                    }
                                }
                            }
                        }
                    }
                }
            };
        }
    }
}