package test3;

import java.util.Set;
import java.util.TreeSet;

/**
 * A class that represents a smart phone. Every smart is a telephone
 * that has a phone number and a set of contacts. The smart phone and 
 * its phone number forms an aggregation. The smart phone and its
 * set of contacts forms a composition.
 * 
 */
public class SmartPhone {

	/**
	 * The phone number for this smart phone.
	 */
	private PhoneNumber number;
	
    /**
     * The set of contacts for this smart phone. 
     */
    private Set<Contact> contacts;

    /**
     * Initializes this smart phone to have a valid phone number.
     * Do not duplicate the code in this constructor; it is here for
     * testing purposes in case your constructors are not implemented
     * correctly.
     */
    public SmartPhone() {
    	try {
    		Test3Utils.initialize(this);
    	}
    	catch (Exception x) {
    		System.out.println("something went wrong");
    		throw new NullPointerException();
    	}
    }
    
    /**
     * Initializes this smart phone given its telephone number.
     * The set of contacts is initialized as an empty set.
     * 
     * @param number
     *            the telephone number of this phone
     * @pre. number != null
     */
    public SmartPhone(PhoneNumber number) {
        this.number = number;
    	this.contacts = new TreeSet<Contact>();
    }

    /**
     * Initializes this smart phone given its telephone number and a set of
     * contacts.
     * 
     * @param number
     *            the telephone number of this phone
     * @param contacts
     *            a set of contacts for this phone
     * @pre. number != null and contacts != null
     */
    public SmartPhone(PhoneNumber number, Set<Contact> contacts) {
        this.number = number;
        this.contacts = new TreeSet<Contact>();
    	for (Contact c : contacts) {
    		this.contacts.add(new Contact(c));
    	}
    }
    
    /**
     * Return the phone number for this smart phone.
     * 
     * @return the phone number for this smart phone
     */
    public PhoneNumber getNumber() {
    	return this.number;
    }

    /**
     * Set then phone number for this smart phone.
     * 
     * @param number the phone number for this smart phone
     * @pre. number != null
     */
    public void setNumber(PhoneNumber number) {
    	this.number = number;
    }
    
    /**
     * Returns true if this smart phone has a contact with the
     * given phone number.
     * 
     * @param number a phone number
     * @return true if this smart phone has a contact with the
     * given phone number
     */
    public boolean hasContact(PhoneNumber number) {
    	for (Contact c : this.contacts) {
    		if (c.getNumber().equals(number)) {
    			return true;
    		}
    	}
    	return false;
    }
    
    /**
     * Returns a deep copy of the set of contacts for this phone.
     * 
     * @return the set of contacts for this phone
     */
    public Set<Contact> getContacts() {
    	Set<Contact> contacts = new TreeSet<Contact>();
    	for (Contact c : this.contacts) {
    		contacts.add(new Contact(c));
    	}
        return contacts;
    }

    /**
     * Add a new contact to the set of the contacts for this phone. 
     * If the argument contact is already in this phone's set of
     * contacts then the set of contacts is not modified.
     * 
     * @param contact
     *            a contact to add to this phone
     * @throws Exception
     *             if the phone already has the specified contact in its set of
     *             contacts
     */
    public void addContact(Contact contact) throws Exception {
        if (this.contacts.contains(contact)) {
            throw new Exception("already have this contact");
        }
        this.contacts.add(contact);
    }

    /**
     * Returns a string representation of this smart phone. The returned string
     * is the phone number (as returned by the Phone version of toString).
     * 
     * @return a string representation of this smart phone
     */
    @Override
    public String toString() {
        return this.number.toString();
    }
    

}