package rep;

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;

import rep.channel.REPSocketChannel;
import rep.optimizers.*;
import rep.translater.TranslaterImp1;

public class Editor {
	private int eid;
	private REPSocketChannel<REPCommand> myChannel;
	private String host;
	private String file;
	private TranslaterImp1 translater;
	private List<REPCommand> sentList;
	private List<REPCommand> sentMergedList;
	private REPCommandOptimizer optimizer;
	
	public Editor(){
		this(true);
	}
	public Editor(boolean doOptimize){
		setHostAndPort(myChannel);
		translater = new TranslaterImp1(eid);
		sentList = new LinkedList<REPCommand>();

		if (doOptimize) optimizer = new DeleteInsertOptimizer(); //タカノがつくったおぷてぃまいざ
		else            optimizer = new NullOptimizer();         //なにもしないけどOptimizer.
		
	}

	public Editor(int editorNo, REPSocketChannel<REPCommand> channel){
		this.eid = editorNo;
		this.myChannel = channel;
		translater = new TranslaterImp1(eid);
		sentList = new LinkedList<REPCommand>();
		setHostAndPort(myChannel);
	}
	
	public Editor(REPSocketChannel<REPCommand> channel) {
		this.myChannel = channel;
		setHostAndPort(myChannel);
		translater = new TranslaterImp1(eid);
		sentList = new LinkedList<REPCommand>();
	}
	
	public List<REPCommand> translate(REPCommand command){
		List<REPCommand> list = new LinkedList<REPCommand>();
		if(command.eid == eid){
			if(checkReturnedCommand(command)){
				//エディタからのコマンドが元のエディタに戻ってきた
				//マージして送信
				ArrayList<REPCommand> cmds = translater.catchOwnCommand(command);
				//optimizer
				//マージ中のエディタからの割り込み検知に使う
				sentMergedList.addAll(cmds);
				sendMergedCommand(cmds);
				return null;
			}else{
				//エディタからの新たな編集コマンド
				sentList.add(command);
				translater.transSendCmd(command);
				list.add(command);
			}
		}else if(eid == REP.MERGE_EID){
			//マージコマンドが返ってきた
			if(translater.checkMergeConflict(command)){
				//マージ中にエディタからの割り込みがあった場合
				List<REPCommand> mergeAgainList = translater.getMergeAgain();

				mergeAgainList = optimizer.optimize(mergeAgainList);
				for(REPCommand againCommand: mergeAgainList){
					myChannel.write(againCommand);
				}
			}
		}else{
			//他のエディタからの編集コマンド
			REPCommand[] cmds = translater.transReceiveCmd(command);
			for(REPCommand cmd : cmds){
				list.add(cmd);
			}
		}
		return list;
	}
	
	private void sendMergedCommand(ArrayList<REPCommand> cmds) {
		for(REPCommand mergeCommand : cmds){
			mergeCommand.setEID(REP.MERGE_EID);
			myChannel.write(mergeCommand);
		}
	}

	private boolean checkReturnedCommand(REPCommand command) {
		if(sentList.size() > 0){
			if(sentList.get(0).seq == command.seq){
				sentList.remove(0);
				return true;
			}else{
				System.out.println("error:Editor.checkReturnedCommand()");
			}
		}
		return false;
	}

	private void setHostAndPort(REPSocketChannel<REPCommand> myChannel2) {
		//host = myChannel2.socket().getRemoteSocketAddress().toString();
		
	}

	public REPSocketChannel<REPCommand> getChannel() {
		return myChannel;
	}
	
	public void setHost(String host){
		this.host = host;
	}

	
	public String getHost(){
		return host;
	}


	public int getEID() {
		return eid;
	}

	public void setEID(int eid) {
		this.eid = eid;
	}
	public String toString(){
		return (host  + ":" + file);
	}

	public String getName() {
		return file;
	}

	public void setName(String string) {
		file = string;
	}

	public void send(REPCommand command) {
		myChannel.write(command);
	}

	public void setChannel(REPSocketChannel<REPCommand> channel) {
		myChannel = channel;
	}

	public boolean isMerging() {
		return translater.isMerging();
	}

}