CR-MicroLabs-ExceptionsAndLogging/src/main/java/com/zipcodewilmington/phone/PhoneNumberFactory.java

package com.zipcodewilmington.phone;

import com.zipcodewilmington.exceptions.InvalidPhoneNumberFormatException;

import java.util.logging.Level;
import java.util.logging.Logger;

import static com.zipcodewilmington.tools.RandomNumberFactory.createInteger;

/**
 * Created by leon on 5/1/17.
 */
public final class PhoneNumberFactory {
    private static final Logger logger = Logger.getGlobal();


    private PhoneNumberFactory() {
        /** This constructor is private
         *  This class is uninstantiable */
    }

    /**
     * @param phoneNumberCount - number of PhoneNumber objects to instantiate
     * @return array of randomly generated PhoneNumber objects
     */ //TODO - Implement logic
    public static PhoneNumber[] createRandomPhoneNumberArray(int phoneNumberCount) {
        PhoneNumber[] phoneArray = new PhoneNumber[phoneNumberCount];
        for (PhoneNumber number : phoneArray) { number = createRandomPhoneNumber(); }
        return phoneArray;
    }

    /**
     * @return an instance of PhoneNumber with randomly generated phone number value
     */ //TODO - Implement logic
    public static PhoneNumber createRandomPhoneNumber() {


        return createPhoneNumberSafely(createInteger(100,999), createInteger(100,999), createInteger(1000,9999));
    }


    /**
     * @param areaCode          - 3 digit code
     * @param centralOfficeCode - 3 digit code
     * @param phoneLineCode     - 4 digit code
     * @return a new phone number object
     */ //TODO - if input is valid, return respective PhoneNumber object, else return null
    public static PhoneNumber createPhoneNumberSafely(int areaCode, int centralOfficeCode, int phoneLineCode) {
        String newNumber = "(" + areaCode + ")" + "-" + centralOfficeCode + "-" + phoneLineCode;
        try {
            return createPhoneNumber(newNumber);
        } catch (InvalidPhoneNumberFormatException e) {
            logger.log(Level.INFO, newNumber + " is not a valid phone number");
            return null;
        }
    }

    /**
     * @param phoneNumberString - some String corresponding to a phone number whose format is `(###)-###-####`
     * @return a new phone number object
     * @throws InvalidPhoneNumberFormatException - thrown if phoneNumberString does not match acceptable format
     */ // TODO - Add throws statement to method signature
    public static PhoneNumber createPhoneNumber(String phoneNumberString) throws InvalidPhoneNumberFormatException{
        logger.log(Level.INFO, "Attempting to create a new PhoneNumber object with value of " + phoneNumberString);
        return new PhoneNumber(phoneNumberString);
    }
}