package org.sufficientlysecure.keychain.ui.widget;

import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.text.Editable;
import android.text.InputType;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.util.Patterns;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.util.ContactHelper;

import java.util.regex.Matcher;

public class EmailEditText extends AutoCompleteTextView {
    EmailEditText emailEditText;

    public EmailEditText(Context context) {
        super(context);
        emailEditText = this;
        this.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS);
        this.addTextChangedListener(textWatcher);
    }

    public EmailEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
        emailEditText = this;
        this.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS);
        this.addTextChangedListener(textWatcher);
    }

    public EmailEditText(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        emailEditText = this;
        this.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS);
        this.addTextChangedListener(textWatcher);
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public EmailEditText(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        emailEditText = this;
        this.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS);
        this.addTextChangedListener(textWatcher);
    }

    TextWatcher textWatcher = new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

        @Override
        public void afterTextChanged(Editable editable) {
            String email = editable.toString();
            if (email.length() > 0) {
                Matcher emailMatcher = Patterns.EMAIL_ADDRESS.matcher(email);
                if (emailMatcher.matches()) {
                    emailEditText.setCompoundDrawablesWithIntrinsicBounds(0, 0,
                            R.drawable.uid_mail_ok, 0);
                } else {
                    emailEditText.setCompoundDrawablesWithIntrinsicBounds(0, 0,
                            R.drawable.uid_mail_bad, 0);
                }
            } else {
                // remove drawable if email is empty
                emailEditText.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
            }
        }
    };
}