package com.hdl.sdk.link.common.event;




import com.hdl.sdk.link.common.utils.LogUtils;
import com.hdl.sdk.link.common.utils.ThreadToolUtils;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutorService;


/**
 * Created by Tong on 2021/9/22.
 * 事件分发
 */
public class EventDispatcher {

    private static final List<EventListener> ALL_TOPICS_EVENT = new ArrayList<>();//所有主题消息

    private static final Map<String, List<EventListener>> EVENT = new HashMap<>();

    private static final Map<EventListener, Integer> TYPE = new HashMap<>();

    private static final int MAIN_TYPE = 0;
    private static final int IO_TYPE = 1;

    private static final ExecutorService ioThread = ThreadToolUtils.getInstance().newFixedThreadPool(2);

    private EventDispatcher() {
    }

    private static class SingletonInstance {
        private static final EventDispatcher INSTANCE = new EventDispatcher();
    }

    public static EventDispatcher getInstance() {
        return SingletonInstance.INSTANCE;
    }

    public synchronized void register(String tag, EventListener listener) {
        if(TYPE.containsKey(listener)){
            return;
        }
        if (!EVENT.containsKey(tag)) {
            EVENT.put(tag, new ArrayList<>());
        }
        List<EventListener> events = EVENT.get(tag);
        if (events != null && !events.contains(listener)) {
            events.add(listener);
            LogUtils.i(String.format("增加订阅主题:%s,当前回调数量:%s",tag,events.size()));
        }
        TYPE.put(listener, MAIN_TYPE);
    }

    public synchronized void registerIo(String tag, EventListener listener) {
        if(TYPE.containsKey(listener)){
            return;
        }
        if (!EVENT.containsKey(tag)) {
            EVENT.put(tag, new ArrayList<>());
        }
        List<EventListener> events = EVENT.get(tag);
        if (events != null && !events.contains(listener)) {
            events.add(listener);
        }
        TYPE.put(listener, IO_TYPE);
    }

    public synchronized void remove(Object tag) {
        ioThread.execute(new Runnable() {
            @Override
            public void run() {
                try {
                    if (EVENT.containsKey(tag)) {
                        List<EventListener> list = EVENT.get(tag);
                        for (EventListener eventListener : list) {
                            TYPE.remove(eventListener);
                        }
                        EVENT.remove(tag);
                    }
                } catch (Exception ignored) {

                }

            }
        });
    }

    public synchronized void remove(Object tag, EventListener listener) {
        ioThread.execute(new Runnable() {
            @Override
            public void run() {
                try {
                    if (EVENT.containsKey(tag)) {
                        List<EventListener> ev = EVENT.get(tag);
                        if (ev != null && !ev.isEmpty()) {
                            TYPE.remove(listener);
                            ev.remove(listener);
                            LogUtils.i(String.format("移除订阅主题:%s,当前回调数量:%s",tag,ev.size()));
                        }
                    }
                } catch (Exception ignored) {

                }

            }
        });
    }

    /**
     * 两个主题是否匹配
     * @param desString 字典中的主题
     * @param sourceString 接收到的主题
     * @return
     */
    boolean isMatch(String desString,String sourceString){
        String []des=desString.split("/");
        String []source=sourceString.split("/");
        if(des.length!=source.length){
            return false;
        }
        for(int i=0;i<des.length;i++) {
            if (!(des[i].equals(source[i]) || des[i].equals("+"))) {
                return false;
            }
        }
        return true;
    }

    /**
     * 事件分发器，分发所有在接口列表中的事件
     * @param topicTag
     * @param o
     */
    public synchronized void post(String topicTag,  Object o) {
        for (String key : EVENT.keySet()) {
            if (!isMatch(key, topicTag)) {
                continue;
            }
            List<EventListener> list = EVENT.get(key);
            if (list != null && !list.isEmpty()) {
                for (EventListener listener : list) {
//                    ThreadToolUtils.getInstance().runOnUiThread(new Runnable() {
//                        @Override
//                        public void run() {
                            if (listener != null) {
                                listener.onMessage(o);
                            }
//                        }
//                    });
                }
            }
        }
        //所有主题的Listener通知
        if (ALL_TOPICS_EVENT == null || ALL_TOPICS_EVENT.isEmpty()) {
            return;
        }
        //开发分发事件
        for (EventListener listener : ALL_TOPICS_EVENT) {
//            ThreadToolUtils.getInstance().runOnUiThread(new Runnable() {
//                @Override
//                public void run() {
                    if (listener != null) {
                        listener.onMessage(o);
                    }
//                }
//            });
        }

    }

    /**
     * 文件发送通知 wxr 2022-03-08 15:38:59
     */
    public synchronized void filePost() {
        //TODO
    }
    /**
     * 注册所有主题消息的监听
     * @param listener
     */
    public synchronized void registerAllTopicsListener(EventListener listener) {
        if (ALL_TOPICS_EVENT != null && !ALL_TOPICS_EVENT.contains(listener)) {
            ALL_TOPICS_EVENT.add(listener);
        }
        TYPE.put(listener, MAIN_TYPE);
    }

    /**
     * 取消所有主题消息的监听
     * @param listener
     */
    public synchronized void removeAllTopicsListener(EventListener listener) {
        ioThread.execute(new Runnable() {
            @Override
            public void run() {
                try {
                    if (ALL_TOPICS_EVENT != null && !ALL_TOPICS_EVENT.isEmpty()) {
                        TYPE.remove(listener);
                        ALL_TOPICS_EVENT.remove(listener);
                    }
                } catch (Exception ignored) {

                }

            }
        });
    }

    public synchronized void clear() {
        ALL_TOPICS_EVENT.clear();
        EVENT.clear();
        TYPE.clear();
    }

    public synchronized void release() {
        clear();
        ioThread.shutdownNow();
    }


}