/// <summary>
/// Merges two contacts into single contact.
/// </summary>
/// <param name="firstContact">The first contact.</param>
/// <param name="secondContact">The second contact.</param>
/// <returns>the merged contact.</returns>
public static Contact Merge(Contact firstContact, Contact secondContact)
{
Check.NotNull(firstContact, "firstContact");
Check.NotNull(secondContact, "secondContact");
if (firstContact.FullName != secondContact.FullName)
throw new InvalidOperationException("Cannot merge contacts from different users!");
Contact mergedContact = firstContact.Copy();
mergedContact.Accounts = firstContact.Accounts | secondContact.Accounts;
return mergedContact;
}
/// <summary>
/// Separates contacts.
/// </summary>
/// <param name="contact">The contact</param>
/// <returns>a list with contacts.</returns>
public static IEnumerable<Contact> Separate(Contact contact)
{
var accounts = EnumHelper.GetFlags(contact.Accounts);
if (accounts.Count() == 1)
throw new InvalidOperationException("The contact has only one account");
foreach (var account in accounts)
{
Contact newContact = contact.Copy();
newContact.Accounts = (Accounts)account;
yield return newContact;
}
}
