package com.snapify.nsuk.post;

import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.TextInputLayout;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;


import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
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.ServerValue;
import com.google.firebase.database.ValueEventListener;

import java.util.HashMap;


/**
 * Created by User on 6/19/2017.
 */

public class CheckUsername extends AppCompatActivity {

    private static final String TAG = "LoginActivity";

    //firebase
    private FirebaseAuth mAuth;
    private FirebaseAuth.AuthStateListener mAuthListener;
    private DatabaseReference mDatabase;

    private TextInputLayout cUser;
    private TextView cCont;
    private FirebaseUser mUser;
    String status;
    private Button cBut;
    private Context mContext;
    private ProgressDialog pd;
    private FirebaseDatabase mFirebaseDatabase;
    private UserSettings mUserSettings;

    private String userID;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_check);
        mAuth = FirebaseAuth.getInstance();


        pd = new ProgressDialog(this);
        FirebaseUser curr_user = FirebaseAuth.getInstance().getCurrentUser();
        String uid = null;
        if (curr_user != null) {
            uid = curr_user.getUid();

            mDatabase = FirebaseDatabase.getInstance().getReference().child("Users").child(uid);


            cUser = (TextInputLayout) findViewById(R.id.cUserr);
            cBut = (Button) findViewById(R.id.cCon);

            TextView backArrow = (TextView) findViewById(R.id.home);
            backArrow.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent mainintent = new Intent(CheckUsername.this, MainActivity.class);
                    mainintent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
                    startActivity(mainintent);
                    finish();
                }
            });


            cBut.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Log.d(TAG, "onClick: attempting to save changes.");
                    checkIfUsernameExists("");


                }
            });
        }
    }


    private void saveProfileSettings() {


        final String username = cUser.getEditText().toString();


        //case1: if the user made a change to their username
        if (TextUtils.isEmpty(username)) {
            cUser.setError("Empty Field");
        } else {
//            checkIfUsernameExists(username);
        }
    }


    private void checkIfUsernameExists(final String username) {
        Log.d(TAG, "checkIfUsernameExists: Checking if  " + username + " already exists.");

        DatabaseReference reference = FirebaseDatabase.getInstance().getReference();
        Query query = reference
                .child(getString(R.string.dbname_users))
                .orderByChild(getString(R.string.field_username))
                .equalTo(username);
        query.addListenerForSingleValueEvent(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                if (dataSnapshot.exists()) {
                    //add the username
                    updateUsername(username);
                    Toast.makeText(CheckUsername.this, "saved username.", Toast.LENGTH_SHORT).show();

                }
                for (DataSnapshot singleSnapshot : dataSnapshot.getChildren()) {
                    if (!singleSnapshot.exists()) {
                        Log.d(TAG, "checkIfUsernameExists: FOUND A MATCH: " + singleSnapshot.getValue(Users.class).getName());
                        request_code();
                        Toast.makeText(CheckUsername.this, "That username already exists.", Toast.LENGTH_SHORT).show();
                    }
                }
            }



                @Override
            public void onCancelled(DatabaseError databaseError) {

            }
        });
    }

    public void updateUsername(String username) {
        pd.setMessage("Registering...");
        pd.setCanceledOnTouchOutside(false);
        pd.show();



        Log.d(TAG, "updateUsername: upadting username to: " + username);
        String status = cUser.getEditText().getText().toString();

        mDatabase.child("name").setValue(status).addOnCompleteListener(new OnCompleteListener<Void>() {
            @Override
            public void onComplete(@NonNull Task<Void> task) {
                if (task.isSuccessful()) {
                    pd.dismiss();


                }
            }
        });
    }


    public void request_code(){

        AlertDialog.Builder alert = new AlertDialog.Builder(this);
        alert.setTitle("Pls Enter a Different Username");

        alert.setPositiveButton("OK", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {

            }
        });

        alert.show();
    }

    }