package com.example.zprokhorenko.donationsapplication;


import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.telephony.PhoneNumberUtils;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;

import java.util.ArrayList;
import java.util.logging.Logger;

import butterknife.Bind;
import butterknife.ButterKnife;
import butterknife.OnClick;


/**
 * A simple {@link Fragment} subclass.
 * Use the {@link DAInputFragment#newInstance} factory method to
 * create an instance of this fragment.
 */
public class DAInputFragment extends Fragment {
    @Bind(R.id.etName)
    EditText etName;

    @Bind(R.id.etSum)
    EditText etSum;

    @Bind(R.id.etPhone)
    EditText etPhone;

    @Bind(R.id.etMail)
    EditText etMail;


    @Bind(R.id.etMessage)
    EditText etMessage;

    @Bind(R.id.btnSendDonation)
    Button btnSendDonation;

    @Bind(R.id.ivClose)
    ImageView ivClose;


    public static final int CORRECT_DATA = 2;
    public static final int EMPTY_DATA = 0;
    public static final int INCORRECT_DATA = 1;

    int minimSum = 10;
    int minSumFromDa = 15;

   String[] mailError  = {"Введите e-mail", "Некорректный e-mail"};

    String[] phoneError  = {"Введите номер", "Неправильный номер"};

    String[] sumError  = {"Введите сумму", "Сумма должна быть больше " + minSumFromDa + " р"};


    ValidationResult mailValidationResult;
    ValidationResult phoneValidationResult;
    ValidationResult sumValidationResult;




    public DAInputFragment() {
        // Required empty public constructor
    }


    public static DAInputFragment newInstance() {

        return new DAInputFragment();
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_dainput, container, false);
        ButterKnife.bind( this, v);
        setOnFocusChangedListener();





        return v;
    }


    @OnClick (R.id.ivClose)
    public void closeDonations(){
        getActivity().getSupportFragmentManager().beginTransaction().remove(this).commit();

    }



    private void setOnFocusChangedListener(){
        etSum.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View view, boolean isFocused) {
                if(!isFocused){
                   validateData();
                    setSumValidationResult();
                }

            }
        });

        etPhone.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View view, boolean isFocused) {
                if(!isFocused) {
                   validateData();
                    setPhoneValidationResult();

                }
            }
        });

        etMail.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View view, boolean isFocused) {
                if(!isFocused) {
                        validateData();
                        setMailValidationResult();



                }
            }
        });
    }







    private ValidationResult validateSum(int minSum){
        ValidationResult dataValidator;

        if (minSum < minimSum){
            minSum = minimSum;
        }



        if (etSum.getText().toString().equalsIgnoreCase("")){

            dataValidator = new ValidationResult(EMPTY_DATA, false);

        }else if(Integer.parseInt(etSum.getText().toString()) >= minSum){

            dataValidator = new ValidationResult(CORRECT_DATA, true);


        }else {

            dataValidator = new ValidationResult(INCORRECT_DATA, false);


        }

        return dataValidator;


    }


    @OnClick(R.id.btnSendDonation)
            public void onBtnClick(){

        validateData();
        setValidationResultsOnViews();


    }





    private void setErrorMessage(ValidationResult dataValidator, EditText editText, String [] errorMessages){
        if(!dataValidator.isValid){
            editText.setError(errorMessages[dataValidator.getErrorCode()]);

        }


    }

    private void clearErrorMessage(ValidationResult dataValidator, EditText editText){
        if(dataValidator.isValid){
            editText.setError(null);

        }


    }



    private void setValidationResults (){
        mailValidationResult = validateMail();
        phoneValidationResult = validatePhone();
        sumValidationResult = validateSum(minSumFromDa);

    }


    private boolean isDataValid(){
        setValidationResults();
        return (mailValidationResult.getIsValid() && phoneValidationResult.getIsValid() && sumValidationResult.getIsValid());

    }


    private void validateData(){
        if(isDataValid()){
            btnSendDonation.setBackgroundColor(Color.parseColor("#ff3b80"));
            btnSendDonation.setTextColor(Color.parseColor("#ffffff"));
        }else {
            btnSendDonation.setBackgroundColor(Color.parseColor("#f5f5f5"));
            btnSendDonation.setTextColor(Color.parseColor("#838383"));
        }
    }


    private void setValidationResultsOnViews(){
        setMailValidationResult();
        setPhoneValidationResult();
        setSumValidationResult();

    }






    private void setMailValidationResult(){
        setValidationResults();
        if(!mailValidationResult.getIsValid()){
            setErrorMessage(mailValidationResult, etMail, mailError);

        } else {
            clearErrorMessage(mailValidationResult, etMail);

        }

    }


    private void setPhoneValidationResult(){
        setValidationResults();
        if(!phoneValidationResult.getIsValid()){
            setErrorMessage(phoneValidationResult, etPhone, phoneError);

        }else {
            clearErrorMessage(phoneValidationResult, etPhone);
        }

    }

    private void setSumValidationResult(){
        setValidationResults();
        if(!sumValidationResult.getIsValid()){
            setErrorMessage(sumValidationResult, etSum, sumError);

        }else {
            clearErrorMessage(sumValidationResult, etSum);

        }

    }







    private ValidationResult validateMail(){

        ValidationResult dataValidator;

                if (etMail.getText().toString().equalsIgnoreCase("")){

                   dataValidator = new ValidationResult(EMPTY_DATA, false);

                }else if(isValidEmail(etMail.getText().toString())){

                   dataValidator = new ValidationResult(CORRECT_DATA, true);


                   }else {

                    dataValidator =new ValidationResult(INCORRECT_DATA, false);


                }

        return dataValidator;


    }



    private ValidationResult validatePhone(){
        ValidationResult dataValidator;

        if (etPhone.getText().toString().equalsIgnoreCase("")){

            dataValidator = new ValidationResult(EMPTY_DATA, false);

        }else if(isValidCellPhone(etPhone.getText().toString())){

            dataValidator = new ValidationResult(CORRECT_DATA, true);



        }else {

            dataValidator =new ValidationResult(INCORRECT_DATA, false);


        }

        return dataValidator;

    }


    public final static boolean isValidEmail(CharSequence target) {
        if (TextUtils.isEmpty(target)) {
            return false;
        } else {
            return android.util.Patterns.EMAIL_ADDRESS.matcher(target).matches();
        }
    }


    public boolean isValidCellPhone(String number)
    {
       return (number.length() == 10 );


    }

    public class ValidationResult{
        private int errorCode;
        private boolean isValid;

        public ValidationResult( int errorCode, boolean isValid){
            this.errorCode = errorCode;
            this.isValid =isValid;
        }


        public int getErrorCode(){
            return errorCode;
        }

        public boolean getIsValid(){
            return isValid;
        }
    }


}