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package phonebook;

public class PhoneBook
{
    private Contact[] list;
    private int count;
    private static final int MAX_CONTACT = 40;

    public PhoneBook()
    {
        count = 0;
        list = new Contact[MAX_CONTACT];
    }

    public void addContact(String name, String phone)
    {
        list[count] = new Contact(name, phone);
        count++;
    }

    public void delContact(String name)
    {
        for(int i = 0; i < count; i++)
        {
            if(list[i].getN().equals(name))
            {

                for(int j = i; j < count - 1; j++)
                {
                    Contact temp = list[j];
                    list[j] = list[j + 1];
                    list[j + 1] = temp;
                }
                list[count - 1] = null;
                count--;
            }
        }
    }

    public String getPhone(String name)
    {
        for(int i = 0; i < count; i++)
        {
            if(list[i].equals(name))
            {
                return list[i].getP();
            }
        }
        return null;
    }

    public String[] getAllContactsNames()
    {
        String[] names = new String[count];
        for(int i = 0; i < count; i++)
        {
            names[i] = list[i].getN();
        }
        return names;
    }

    @Override
    public String toString()
    {
        Contact[] a = new Contact[count];
        for(int i = 0; i < a.length; i++){
            a[i] = list[i];
        }

        boolean isFinished=true;
        while(isFinished){
            isFinished = false;
            for(int i = 0; i < count-1; i++)
            {
                if(a[i].getN().compareTo(a[i+1].getN())>0)
                {
                    Contact tmp = a[i];
                    a[i] = a[i+1];
                    a[i+1] = tmp;
                    isFinished = true;
                }
            }
        }

        String x = "";
        for(int i = 0; i < count; i++)
        {
            x += a[i].getN()+"\n";
        }
        return x;


    }
}