package ChatBot;
import java.util.Scanner;

public class ChatBot {

    public static void main(String[] args) {
        Scanner cin = new Scanner(System.in);
        int ok=1,ind=0;
        String me,bot;
        String MSG_BOT_HELLO = "I am Carl, who are you? ";
        bot="Hello!";
        System.out.println(bot);
        me=cin.nextLine();
        while(ok==1) {
            switch(ind) {
                case 0:
                    bot=MSG_BOT_HELLO;
                    break;

                case 1:
                {
                    String name="";
                    for(int i = 1; i < me.length() - 1; i++){
                        if(Character.isUpperCase(me.charAt(i))){
                              for(int j=i; j<me.length();j++) {
                                   if(me.charAt(j)==' ' || me.charAt(j)=='.' )
                                       break;
                                   name+=me.charAt(j);

                              }
                        }
                    }
                    bot = "Nice to meet you," + name + ". How old are you?";
                    break;
                }

                case 2:
                {
                    String age="";
                    for(int i=0;i<me.length();i++){
                         if(Character.isDigit(me.charAt(i)))
                             age += me.charAt(i);
                    }
                    int age1 = Integer.parseInt(age);
                    int BOT_AGE = 20;
                    bot="I am " + BOT_AGE + " years old.";
                    if(age1==BOT_AGE)
                        bot+=" Wow! We are the same age! ";
                    else if (age1<BOT_AGE)
                        bot+="You are smaller than me.";
                    else
                        bot+="You are older than me.";
                    bot+="\nSo, What are you doing? ";
                    break;
                }

                case 3 :
                {
                    if(me.indexOf("nothing")!=-1 ||me.indexOf("Nothing")!=-1 || me.indexOf("bored")!=-1)
                        bot="I understand, you can read a book.";
                    else
                        bot="Nice.";
                    if(me.indexOf("you")!=-1 || me.indexOf("?")!=-1)
                        bot+=" I am just talking to you.";
                    bot+="\nBy the way, Where are you from?";
                    break;
                }

                case 4:
                    bot="I like this place. I am from Lithuania. How is the weather there ?";
                    break;

                case 5:
                {
                    if(me.indexOf("hot")!=-1 || me.indexOf("sunny")!=-1)
                        bot="You should go for a walk. Don't miss a beautiful day.";
                    else
                        bot="So you're staying at home today, aren't you?";
                    bot+="\nHere it snows.";
                    break;
                }

                case 6:
                    bot="Ok! I wish you a nice day! Bye!";
                    ok=0;
                    break;
            }
            System.out.println(bot);
            me=cin.nextLine();
            ind++;
        }


    }
}