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package com.arch.util;

import java.util.Arrays;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public final class EmailUtils {

    private EmailUtils() {

    }

    public static boolean isValid(String email) {
//        Pattern p = Pattern.compile("^[a-zA-Z]+(\\.[\\w-]+)*@([\\w-]+\\.)+[a-zA-Z]{2,7}$");
//        Pattern p = Pattern.compile("^[A-Za-z]+[A-Za-z0-9._-]*@[A-Za-z0-9._-]+.[A-Za-z]{2,4}+(.[A-Za-z]{2})*$");
//        Pattern p = Pattern.compile("^[_A-Za-z0-9-+]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$");
        Pattern p = Pattern.compile("^[A-Za-z0-9._-]*@[A-Za-z0-9._-]+.[A-Za-z]{2,4}+(.[A-Za-z]{2})*$");
        Matcher m = p.matcher(email);
        return m.find();
    }

    public static boolean isValidAndNotRequired(String email) {
        if (email == null
                || email.isEmpty()) {
            return true;
        }

        return !Arrays
                .stream(email.split(";"))
                .anyMatch(e -> !isValid(e));
    }
}