import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.security.MessageDigest;
import java.util.HashMap;
import java.util.Map;

class User {
  // fucntion to check if user is valid or not
    public int isUserValid(String username, String password) throws Exception
    {

        int validId = 0;

      // <userName,hash password>
      Map<String, String> credentials = new HashMap<>();
          credentials.put("griffin.keyes", "93f725a07423fe1c889f448b33d21f46");   // password == java
          credentials.put("rosario.dawson", "2bff04a9b5f68427573d086983df5eed");  // password  == pizza
          credentials.put("bernie.gorilla", "1801bc89e752077204c92b3dd9f9f62d");  // password  == dew
          credentials.put("donald.monkey", "23eeeb4347bdd26bfc6b7ee9a3b755dd");     // password  == python
          credentials.put("jerome.grizzlybear",    "fc35fdc70d5fc69d269883a822c7a53e");     // password  == html
          credentials.put("bruce.grizzlybear", "e77989ed21758e78331b20e477fc5582");         // password  == dev


          // here we are generating the md5 hash of our password
          MessageDigest md = MessageDigest.getInstance("MD5");
          md.update(password.getBytes());
          byte[] digest = md.digest();

          StringBuffer passward_hash = new StringBuffer();
          for (byte b : digest) {
              passward_hash.append(String.format("%02x", b & 0xff));
          }


          // we are iterating through the hash map and comparing the input passward and username with saved ones
          // by using for each loop
          for(Map.Entry it : credentials.entrySet())
        {
              // if password and username match with the password and username in hash map return the id of hashmap
              if(username.contentEquals(it.getKey().toString()) && passward_hash.toString().contentEquals(it.getValue().toString()))
              {
                  return validId;
              }

              validId ++;

        }
          // if not match return -1

      return -1;
    }


    // this function shows diffrent msg according to diffrent user
    public void prineWelcomeMsg(int id)
    {
        switch(id)
        {
        case 0:
        {
             System.out.println();


             System.out.println("Hello, Zookeeper!\n" +
                     "\n" + "As zookeeper, you have access to all of the"
                     + " animals'" + " information and their" + " daily"
                     + " monitoring logs. This " + "allows you to track their "
                     + "feeding habits, habitat conditions, and general welfare.");
             System.out.println();
             break;
        }



        case 1:
        {
            System.out.println();

            System.out.println("Hello, Zookeeper!\n" +
                    "\n" + "As zookeeper, you have access to all of the"
                    + " animals'" + " information and their" + " daily"
                    + " monitoring logs. This " + "allows you to track their "
                    + "feeding habits, habitat conditions, and general welfare.");
            System.out.println();
            break;

        }

        case 2:
        {

            System.out.println();

            System.out.println("Hello, Veterinarian!\n" + "\n" + "As "
                    + "veterinarian, you have access to all of the animals'"
                    + " health records. This allows you to view each animal's "
                    + "medical history and current treatments/illnesses "
                    + "(if any), and to maintain a vaccination log.");
            System.out.println();


            break ;
        }



        case 3:
        {


              System.out.println();

              System.out.println("Hello, Veterinarian!\n" + "\n" + "As "
                      + "veterinarian, you have access to all of the animals'"
                      + " health records. This allows you to view each animal's "
                      + "medical history and current treatments/illnesses "
                      + "(if any), and to maintain a vaccination log.");
              System.out.println();


            break;
        }



        case 4:

        {

         System.out.println();

              System.out.println("Hello, System Admin!\n" + "\n" + "As"
                      + " administrator, you have access to the zoo's main "
                      + "computer system.  This allows you to monitor users in "
                      + "the system and their roles.");

            break;
        }

        case 5:
        {
              System.out.println();

              System.out.println("Hello, System Admin!\n" + "\n" + "As"
                      + " administrator, you have access to the zoo's main "
                      + "computer system.  This allows you to monitor users in "
                      + "the system and their roles.");
              break;
        }



        default :
        {
            // empty or fill anything
        }



        }
    }
}





public class Authentication {

    public static void main(String[] args) throws Exception {

        BufferedReader scnr = new BufferedReader(new InputStreamReader(System.in));
        String userName = null;
        String usersType [] = {"zookeeper","zookeeper1","veterinarian","veterinarian1","Admin","Admin1"};

        User userObj = new User()
                ;
        int isValidId = -1;

    while(isValidId == -1)
    {
        System.out.println("Enter username:");
        userName = scnr.readLine();
        System.out.println("Enter password:");
        String password1 = scnr.readLine();



        isValidId     = userObj.isUserValid(userName, password1) ;


        if (isValidId != -1 )
        {
            System.out.println("Valid User");
            userObj.prineWelcomeMsg(isValidId);
        }

        else
            System.out.println("InValid User");


    }
    }
}