package main.java.Platform.demo;

import java.time.Clock;
import java.time.Instant;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

import main.java.Platform.Chimera.implementation.Platform.ChimeraExecutable;
import main.java.Platform.Chimera.implementation.Platform.Transaction.Annotation.Transaction;
import main.java.Platform.Chimera.implementation.common.ChimeraSignature;

public class DemoApp extends ChimeraExecutable {
    private List<String> log = new ArrayList<>();

    public DemoApp(DemoUser user) {
        super(user);
    }

    @Override
    public void main() {
        Scanner in = new Scanner(System.in);

        //literally a bug in the AspectJ compiler that a while/for will not work here
        recurseInsteadOfWhile(in);
    }

    private void recurseInsteadOfWhile(Scanner in){
        while (true) {
            System.out.print("> ");
            String what = in.nextLine();
            ChimeraSignature sig = user.sign(what);
            if (what.equals("!exit")) {
                System.out.println("<chat end>");
                in.close();
                System.out.println(this.getState());
                return;
            }

            timeStamp(Clock.systemUTC().instant());
            say((DemoUser) this.user, what, sig);

        }
    }

    @Transaction
    public void timeStamp(Instant time){
        log.add(time.toString());
    }

    @Transaction
    public void say(DemoUser who, String what, ChimeraSignature sig) {
        if(who.verifySignature(what, sig))
           log.add(who.getName() + ": " + what);
        printState();
    }

    private void printState() {
        System.out.println("==== LOG ====");
        for (String s : log) {
            System.out.println(s);
        }
        System.out.println("=============");
    }
}