add utility functions adding and checking contacts

add the contact addition wrapping from ConfigurationManager.
add hasContact to check if a contact method is part account contacts.

Change-Id: I10cd59ebdba74dba5098d794810f29542b70daa4

src/account.cpp

@@ -1458,10 +1458,42 @@ bool Account::removeContact( Certificate* c  )
         return false;
 
     ConfigurationManager::instance().removeContact(id(), c->remoteId(), false);
+    return true;
+}
+
+bool Account::addContact( const URI& uri )
+{
+   if (uri.isEmpty())
+       return false;
+
+   ConfigurationManager::instance().addContact(id(), uri);
 
    return true;
 }
 
+bool Account::addContact(const ContactMethod* c)
+{
+    if (!c)
+        return false;
+
+    return addContact(c->uri());
+}
+
+bool Account::addContact( Certificate* c  )
+{
+    if ((!c) || (c->remoteId().isEmpty()))
+        return false;
+
+    ConfigurationManager::instance().addContact(id(), c->remoteId());
+    return true;
+}
+
+bool Account::hasContact(ContactMethod* c )
+{
+    auto contacts = getContacts();
+    return contacts.indexOf(c) != -1;
+}
+
 uint Account::internalId() const
 {
    return d_ptr->m_InternalId;

src/account.h

@@ -485,6 +485,10 @@ class LIB_EXPORT Account : public ItemBase {
       Q_INVOKABLE bool removeContact(Certificate* c);
       Q_INVOKABLE bool removeContact(const ContactMethod* c);
       Q_INVOKABLE bool removeContact(const URI& uri);
+      Q_INVOKABLE bool addContact(Certificate* c);
+      Q_INVOKABLE bool addContact(const ContactMethod* c);
+      Q_INVOKABLE bool addContact(const URI& uri);
+      Q_INVOKABLE bool hasContact(ContactMethod* c);
       Q_INVOKABLE QString accountDetail(const QString& param) const;
 
       //Setters