package com.winkel.winkelapp.Activities;

import android.app.ProgressDialog;
import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.winkel.winkelapp.R;


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.FirebaseAuthActionCodeException;
import com.google.firebase.auth.FirebaseAuthException;
import com.google.firebase.auth.FirebaseUser;

import java.util.Calendar;

import com.amazonaws.auth.CognitoCachingCredentialsProvider;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.dynamodbv2.*;
import com.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.*;
import com.amazonaws.services.dynamodbv2.model.*;

public class SignupActivity extends AppCompatActivity implements View.OnClickListener {

    Button signupBtn, loginBtn;
    //definig the view objects
    private  Button signup_btn;
    private EditText email, password, conf_password, firstname, lastname, gradyear;
    private FirebaseAuth firebaseAuth;
    private int year = Calendar.getInstance().get(Calendar.YEAR);
    final String LOG_TAG="";
    private ProgressDialog progressDialog;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_signup);

        //defining firebase authentification
        firebaseAuth = FirebaseAuth.getInstance();
        //if getCurrentUser does not returns null , that means user is already  logged in , so th activity closes and opens the merchant profile
        if(firebaseAuth.getCurrentUser() != null){
            finish();
            //start profile here
            startActivity(new Intent(getApplicationContext(),MerchantProfileActivity.class));
        }

        progressDialog = new ProgressDialog(this);
        //this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
        this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
        //initializing the views
        signup_btn = (Button)findViewById(R.id. signup_btn);
        email    = (EditText) findViewById(R.id.email);
        password = (EditText) findViewById(R.id.password);
        conf_password = (EditText) findViewById(R.id.conf_password);
        firstname = (EditText) findViewById(R.id.first_name);
        lastname = (EditText) findViewById(R.id.last_name);
        gradyear = (EditText) findViewById(R.id.graduation_year);
        signupBtn = (Button) findViewById(R.id.signup_btn);
        loginBtn  = (Button) findViewById(R.id.signin_btn);


        signupBtn.setOnClickListener(this);
        loginBtn.setOnClickListener(this);
    }


    private void sendEmail() {

        final FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
        user.sendEmailVerification()
                .addOnCompleteListener(new OnCompleteListener<Void>() {
                    @Override
                    public void onComplete(@NonNull Task<Void> task) {
                        if (task.isSuccessful()){
                            Toast.makeText(SignupActivity.this, "You have been sent a confirmation email, Please verify your account", Toast.LENGTH_SHORT).show();
                        }
                    }
                });
    }
    String [] domainCheck;
    private void registerUser(){
        String email1 = email.getText().toString().trim();
        String email2 = email1;
        String password1 = password.getText().toString().trim();
        String conf_password1 = conf_password.getText().toString().trim();
        String firstname1 = firstname.getText().toString().trim();
        String lastname1 = lastname.getText().toString().trim();
        String gradyear1 = gradyear.getText().toString().trim();
        if (TextUtils.isEmpty(firstname1)){ //checking if user has filled the first name
            //if first name is empty
            Toast.makeText(this, "Please Enter Your First Name", Toast.LENGTH_SHORT).show();
            return; //stopping the function from executing further
        }
        if (TextUtils.isEmpty(lastname1)){ //checking if user has filled the last name
            //if last name is empty
            Toast.makeText(this, "Please Enter Your Last Name", Toast.LENGTH_SHORT).show();
            return; //stopping the function from executing further
        }
        if (TextUtils.isEmpty(email1)){ //if user has filled the email address
            //if email is empty
            Toast.makeText(this,"Please Enter The Correct Email Address", Toast.LENGTH_SHORT).show();
            return; // stops the functon from excecuting further
        }
        domainCheck = new String [2]; //spliting the email address to check the domain
        if(email2.indexOf("@")>=0){
            domainCheck = email2.split("@");
        }
        if(email2.indexOf("@")<0){ //if the email format is not correct
            Toast.makeText(this, "Please Enter A Valid Email Address", Toast.LENGTH_SHORT).show();
            return;
        }
        if (!(domainCheck[1].equals("brunel.ac.uk") || domainCheck[1].equals("my.brunel.ac.uk") || domainCheck[1].equals("winkelapp.com"))){ //checking if user has filled the supported domain
            Toast.makeText(this, "Your domain is currently not supported, please try again later", Toast.LENGTH_SHORT).show();
            return;
        }
        if (TextUtils.isEmpty(gradyear1)){ //if user has filled the graduation year
            //if graduation year is empty
            Toast.makeText(this, "Please Enter Your Graduation Year", Toast.LENGTH_SHORT).show();
            return; //stopping the function from executing further
        }
        if (Integer.parseInt(gradyear1)<year){ //if graduation year is correct
            Toast.makeText(this, "Please Make Sure The Graduation Year Is Correct", Toast.LENGTH_SHORT).show();
            return;
        }
        if (TextUtils.isEmpty(password1)){ //if user has filled the password
            //if password is empty
            Toast.makeText(this, "Please Enter The Password", Toast.LENGTH_SHORT).show();
            return; //stopping the function from executing further
        }
        if (TextUtils.isEmpty(conf_password1)){ //if user has filled confirm password
            //if confirm password is empty
            Toast.makeText(this, "Please Confirm Your Password", Toast.LENGTH_SHORT).show();
            return; //stopping the function from executing further
        }
        if (!(password1.equals(conf_password1))){ //if two password are same
            Toast.makeText(this, "Please make sure you're typing the same password", Toast.LENGTH_SHORT).show();
            return;
        }
        progressDialog.setMessage("Registering User");
        progressDialog.show();


        firebaseAuth.createUserWithEmailAndPassword(email1,password1)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {

                        if (task.isSuccessful()){
                            Toast.makeText(SignupActivity.this, "Registered Successfully", Toast.LENGTH_SHORT).show();
                            sendEmail();
                            /*try{
                                insertData();
                            }
                            catch (Exception e) {
                                Toast.makeText(SignupActivity.this, "User Registered but Failed to store data in the database", Toast.LENGTH_SHORT).show();
                                firebaseAuth.signOut();
                            }*/
                            finish();
                            //start profile here
                            startActivity(new Intent(getApplicationContext(),LoginActivity.class));

                        }

                        else{
                            Toast.makeText(SignupActivity.this, "Registration Failed, please make sure all fields are complete", Toast.LENGTH_SHORT).show();
                        }
                        progressDialog.dismiss();
                    }
                });
    }
    /*@Override
    public void onBackPressed(){
        finish();
    }*/
    public void onClick(View view) {
        if(view == signupBtn)
            registerUser();
        else if (view == loginBtn) {
            Intent launchNextActivity;
            launchNextActivity = new Intent(SignupActivity.this, LoginActivity.class);
            startActivity(launchNextActivity);
        }
    }
    FirebaseUser user1 = null;
    /*public void insertData() {
        // Fetch the default configured DynamoDB ObjectMapper
        final DynamoDBMapper dynamoDBMapper = AWSMobileClient.defaultMobileClient().getDynamoDBMapper();
        //final UserDO ud = new UserDO(); // Initialize the Notes Object
        //user1 = FirebaseAuth.getInstance().getCurrentUser();
        // The userId has to be set to user's Cognito Identity Id for private / protected tables.
        // User's Cognito Identity Id can be fetched by using:
        // AWSMobileClient.defaultMobileClient().getIdentityManager().getCachedUserID()
        *//*ud.setUserId(user1.getUid());
        ud.setEmail(email.toString().trim());
        ud.setFName(firstname.toString().trim());
        ud.setLName(lastname.toString().trim());
        ud.setGradYear(gradyear.toString().trim());
        if(domainCheck[2].equals("winkelapp.com")){
            ud.setUniversityId("0001");
        }
        if (domainCheck[2].equals("my.brunel.ac.uk") || domainCheck[2].equals("brunel.ac.uk")){
            ud.setUniversityId("0002");
        }
        AmazonClientException lastException = null;
        try {
            dynamoDBMapper.save(ud);
        } catch (final AmazonClientException ex) {
            Log.e(LOG_TAG, "Failed saving item : " + ex.getMessage(), ex);
            lastException = ex;
        }*//*
    }*/