package com.example.comps.minesweeperv3;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Query;
import com.google.firebase.database.ValueEventListener;

import java.util.ArrayList;

public class Registeract extends AppCompatActivity {

    Button btnRegister,btnCancelR;

    EditText etUsername,etPassword,etEmail;

    boolean UnIsTaken;

    private ArrayList<User> user = new ArrayList<User>();

    DatabaseReference reference = FirebaseDatabase.getInstance().getReference();
    DatabaseReference users;
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_registeract);

        users = reference.child("Users");

        btnRegister = (Button)findViewById(R.id.btnRegister);
        btnCancelR = (Button)findViewById(R.id.btnCancelR);

        etUsername = (EditText)findViewById(R.id.etUsernameR);
        etPassword = (EditText)findViewById(R.id.etPasswordR);
        etEmail = (EditText)findViewById(R.id.etEmailR);

        final DatabaseReference.CompletionListener  myCompletionListener =  new DatabaseReference.CompletionListener() {
            @Override
            public void onComplete (DatabaseError databaseError, DatabaseReference
                    databaseReference){
                if (databaseError == null)
                {
                    Toast.makeText(getBaseContext(), "save OK!", Toast.LENGTH_LONG).show();
                }
                else
                {
                    Toast.makeText(getBaseContext(),"save Err" +  databaseError.getMessage(),
                            Toast.LENGTH_LONG).show();
                    databaseError.toException().printStackTrace();
                }
            }
        };

        btnRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                UnIsTaken=false;
                String stUsername  = etUsername.getText().toString();
                String stPassword = etPassword.getText().toString();
                for(int i=0;i<user.size();i++)
                {
                    if(stUsername.equals(user.get(i).getUsername()))
                    {
                        UnIsTaken=true;
                        Toast.makeText(getBaseContext(), "User name is taken!", Toast.LENGTH_LONG).show();
                    }
                }
                if(UnIsTaken==false)
                {
                    User user = new User(stUsername, stPassword);
                    users.child(user.getUsername()).setValue(user, myCompletionListener);
                }
            }
        });

        View.OnClickListener myListener = new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent i = new Intent(Registeract.this,FirstAct.class);
                startActivity(i);
            }
        };

        btnCancelR.setOnClickListener(myListener);

        getUsersFromDB();
    }
    public void getUsersFromDB() {
        Query query= users.orderByChild("userName");
        query.addValueEventListener(new ValueEventListener()
        {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot)
            {
                for (DataSnapshot dst : dataSnapshot.getChildren())
                {
                    User u = dst.getValue(User.class);
                    user.add(u);
                }
            }
            @Override
            public void onCancelled(DatabaseError databaseError) {}
        });
    }
}