package electrosphere.net.synchronization.server;


import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;

import electrosphere.entity.Entity;
import electrosphere.entity.state.movement.jump.ServerJumpTree;
import electrosphere.net.parser.net.message.SynchronizationMessage;
import electrosphere.net.synchronization.enums.BehaviorTreeIdEnums;
import electrosphere.server.datacell.utils.EntityLookupUtils;

/**
 * Server service to handle synchronization packets from client (principally, requesting to start btrees)
 */
public class ServerSynchronizationManager {
    
    /**
     * Signal to start the specified tree
     */
    public static final int SERVER_SYNC_START = 0;

    /**
     * Signal to interrupt the specified tree
     */
    public static final int SERVER_SYNC_INTERRUPT = 1;


     //The list of messages to loop through
    List<SynchronizationMessage> messages = new CopyOnWriteArrayList<SynchronizationMessage>();

    /**
     * Pushes a message into the queue to be processed
     * @param message The message
     */
    public void pushMessage(SynchronizationMessage message){
        this.messages.add(message);
    }

    /**
     * Processes all messages in the queue and then clears the queue
     */
    public void processMessages(){
        List<SynchronizationMessage> messagesToClear = new LinkedList<SynchronizationMessage>();
        for(SynchronizationMessage message : messages){
            //attempt to handle the message
            messagesToClear.add(message);
            switch(message.getMessageSubtype()){
                case CLIENTREQUESTBTREEACTION: {
                    Entity entity = EntityLookupUtils.getEntityById(message.getentityId());
                    updateEntityState(entity,message.getbTreeId(),message);
                } break;
                case UPDATECLIENTSTATE:
                case UPDATECLIENTDOUBLESTATE:
                case UPDATECLIENTFLOATSTATE:
                case UPDATECLIENTINTSTATE:
                case UPDATECLIENTLONGSTATE:
                case UPDATECLIENTSTRINGSTATE:
                case ATTACHTREE:
                case DETATCHTREE:
                case LOADSCENE:
                case SERVERNOTIFYBTREETRANSITION:
                    //silently ignore
                    break;
            }
        }
        for(SynchronizationMessage message : messagesToClear){
            messages.remove(message);
        }
    }

    /**
     * <p> Automatically generated </p>
     * <p>
     * Performs actions requested by the client
     * </p>
     * @param entity The entity
     * @param bTreeId The id of the behavior tree
     * @param message The raw synchronization message holding the update data
     */
    private void updateEntityState(Entity entity, int bTreeId, SynchronizationMessage message){
        switch(bTreeId){
            case BehaviorTreeIdEnums.BTREE_CLIENTJUMPTREE_ID: {
                ServerJumpTree tree = ServerJumpTree.getServerJumpTree(entity);
                tree.start();
            } break;
    
        }
    }

}