package pathfinder.mergetest.test;

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

import pathfinder.mergetest.Text;


import remoteeditor.command.REPCommand;
import remoteeditor.network.REP;



public class RepCommandOptimizeTest {
	//テストコマンド (command,string,lineno,id)
	static String[] test1 = {
			Integer.toString(REP.REPCMD_INSERT),"TEST0","3","1",
			Integer.toString(REP.REPCMD_INSERT),"TEST1","3","2",
			Integer.toString(REP.REPCMD_DELETE),"TEST2","3","3",
			Integer.toString(REP.REPCMD_DELETE),"TEST0","3","4",
			Integer.toString(REP.REPCMD_INSERT),"TEST1","3","5",
			Integer.toString(REP.REPCMD_INSERT),"TEST2","2","6",
			Integer.toString(REP.REPCMD_INSERT),"TEST0","1","7",
			Integer.toString(REP.REPCMD_DELETE),"TEST1","3","8"
			
			
	};
	
	static LinkedList<REPCommand> cmdlist  = new LinkedList<REPCommand>();
	
	void makeCommand(String[] str){
		int seq = 0;
		try{
			for( int i = 0;i < str.length; i+=4){
				int cmd = Integer.parseInt(str[i]);
				int lineno = Integer.parseInt(str[i+2]);

				int sid = Integer.parseInt(str[i+3]);
				int eid = sid;
				cmdlist.add(new REPCommand(cmd, sid, eid, seq++, lineno, str[i+1].length(), str[i+1]));
			}
		}catch(Exception e){
			e.printStackTrace();
		}
	}

	LinkedList<REPCommand> optimize(LinkedList<REPCommand> inp){
		LinkedList<REPCommand> output = new LinkedList<REPCommand>();
		LinkedList<REPCommand> input = new LinkedList<REPCommand>();
		/*for(int i = 0; i < inp.size(); i++){
			output.add(inp.get(i));
		}*/
		output = reverse(inp);
		input = reverse(inp);
		for(int i = 0; i < input.size(); i++){
			REPCommand r = input.get(i);
			switch(r.cmd){
			case REP.REPCMD_INSERT:
				break;
			case REP.REPCMD_DELETE:
				optimizedAddDelete(output,r,i);
				break;
			}
		}
		//return input;
		return reverse(output);
		
	}
	private LinkedList<REPCommand> reverse(LinkedList<REPCommand> outp) {
		LinkedList<REPCommand> reverse = new LinkedList<REPCommand>();
		for(REPCommand r : outp){
			reverse.addFirst(r);
		}
		return reverse;
	}
	private void optimizedAddDelete(LinkedList<REPCommand> output, REPCommand r, int ln) {
		int lineno = r.lineno;
		for(int i = ln; i < output.size(); i++){
			REPCommand s = output.get(i);
			switch(s.cmd){
			case REP.REPCMD_INSERT:
				if(s.lineno < lineno){
					s.lineno ++;
				
					if(s.lineno == lineno){
						output.remove(s);
						i = output.size();
					}
				}
				break;
			case REP.REPCMD_DELETE:
				/*if(s.lineno == lineno){
					input.remove(s);
				}*/
				break;
			}
		}	
	}
	void printCmdList(LinkedList<REPCommand> before, LinkedList<REPCommand> after){
		System.out.println("---------- CmdList1 ----------");
		for(REPCommand r: before){
			System.out.println(r.toString());
		}
		System.out.println("---------- CmdList2 ----------");
		for(REPCommand s: after){
			System.out.println(s.toString());
		}
	}
	
	Text text1 = new Text();
	Text text2 = new Text();
	
	void edit(LinkedList<REPCommand> before, LinkedList<REPCommand> after){
		for(REPCommand r : before){
			text1.edit(r);
		}
		for(REPCommand s : after){
			text2.edit(s);
		}
	}
	
	void printText(){
		System.out.println("------------ Text1 -----------");
		text1.printAllText();
		System.out.println("------------ Text2 -----------");
		text2.printAllText();
	}
	
	void checkText(){
		System.out.println("----------- Check -----------");
		if(!text1.equals(text2)){
			System.out.println("It isn't equal.");
		}else{
			System.out.println("Equal.");
		}
		
	}
	
	public static void main(String[] s){
		
		RepCommandOptimizeTest rco = new RepCommandOptimizeTest();
		rco.makeCommand(test1);
		java.util.Collections.shuffle(cmdlist);
		rco.printCmdList(cmdlist, rco.optimize(cmdlist));
		rco.edit(cmdlist, rco.optimize(cmdlist));
		rco.printText();
		rco.checkText();
	}
}