refresh friends from fastaddressbook when going from BG to FG

Classes/Contact.h

@@ -43,6 +43,8 @@
 
 - (instancetype)initWithCNContact:(CNContact *)contact;
 - (instancetype)initWithFriend:(LinphoneFriend *) friend;
+- (void)reloadFriend;
+- (void)clearFriend;
 
 - (BOOL)setSipAddress:(NSString *)sip atIndex:(NSInteger)index;
 - (BOOL)setEmail:(NSString *)email atIndex:(NSInteger)index;

Classes/Contact.m

@@ -455,4 +455,36 @@
 	_emails = [[NSMutableArray alloc] init];
 }
 
+- (void)reloadFriend {
+	const char *key = [NSString stringWithFormat:@"ab%@", _person.identifier].UTF8String;
+	// try to find friend associated with that person
+	_friend = linphone_friend_list_find_friend_by_ref_key(linphone_core_get_default_friend_list(LC), key);
+	if (!_friend) {
+		_friend = linphone_friend_ref(linphone_core_create_friend(LC));
+		linphone_friend_set_ref_key(_friend, key);
+		linphone_friend_set_name(_friend, [NSString stringWithFormat:@"%@%@", _firstName ? _firstName : @"", _lastName ? [_firstName ? @" " : @"" stringByAppendingString:_lastName] : @""] .UTF8String);
+		for (NSString *sipAddr in _sipAddresses) {
+			LinphoneAddress *addr = linphone_core_interpret_url(LC, sipAddr.UTF8String);
+			if (addr) {
+				linphone_address_set_display_name(addr, [self displayName].UTF8String);
+				linphone_friend_add_address(_friend, addr);
+				linphone_address_destroy(addr);
+			}
+		}
+		for (NSString *phone in _phones) {
+			linphone_friend_add_phone_number(_friend, phone.UTF8String);
+		}
+		if (_friend) {
+			linphone_friend_enable_subscribes(_friend, FALSE);
+			linphone_friend_set_inc_subscribe_policy(_friend, LinphoneSPDeny);
+				linphone_core_add_friend(LC, _friend);
+		}
+	}
+	linphone_friend_ref(_friend);
+}
+
+- (void)clearFriend {
+	_friend = NULL;
+}
+
 @end

Classes/LinphoneAppDelegate.m

@@ -58,12 +58,13 @@
 - (void)applicationDidEnterBackground:(UIApplication *)application {
 	LOGI(@"%@", NSStringFromSelector(_cmd));
 	[LinphoneManager.instance enterBackgroundMode];
-  
+	[LinphoneManager.instance.fastAddressBook clearFriends];
 	[CoreManager.instance stopLinphoneCore];
 }
 
 - (void)applicationWillEnterForeground:(UIApplication *)application {
     [LinphoneManager.instance startLinphoneCore];
+    [LinphoneManager.instance.fastAddressBook reloadFriends];
     [NSNotificationCenter.defaultCenter postNotificationName:kLinphoneMessageReceived object:nil];
 }
 
@@ -100,9 +101,9 @@
 		if (PhoneMainView.instance.currentView == ContactsListView.compositeViewDescription || PhoneMainView.instance.currentView == ContactDetailsView.compositeViewDescription) {
 			[PhoneMainView.instance changeCurrentView:DialerView.compositeViewDescription];
 		}
-                [instance.fastAddressBook fetchContactsInBackGroundThread];
-                instance.fastAddressBook.needToUpdate = FALSE;
-        }
+		[instance.fastAddressBook fetchContactsInBackGroundThread];
+		instance.fastAddressBook.needToUpdate = FALSE;
+	}
 
         LinphoneCall *call = linphone_core_get_current_call(LC);
 

Classes/Utils/FastAddressBook.h

@@ -28,12 +28,14 @@
 @property(readonly, nonatomic) NSMutableDictionary *addressBookMap;
 @property BOOL needToUpdate;
 
-- (void) fetchContactsInBackGroundThread;
+- (void)fetchContactsInBackGroundThread;
 - (BOOL)deleteContact:(Contact *)contact;
 - (BOOL)deleteCNContact:(CNContact *)CNContact;
 - (BOOL)deleteAllContacts;
 - (BOOL)saveContact:(Contact *)contact;
 - (BOOL)saveCNContact:(CNContact *)CNContact contact:(Contact *)Contact;
+- (void)reloadFriends;
+- (void)clearFriends;
 
 - (void)dumpContactsDisplayNamesToUserDefaults;
 - (void)removeContactFromUserDefaults:(Contact *)contact;

Classes/Utils/FastAddressBook.m

@@ -498,6 +498,20 @@
 	}
 }
 
+- (void)reloadFriends {
+	dispatch_async(dispatch_get_main_queue(), ^{
+		[_addressBookMap enumerateKeysAndObjectsUsingBlock:^(NSString *name, Contact *contact, BOOL *stop) {
+			[contact reloadFriend];
+		}];
+	});
+}
+
+- (void)clearFriends {
+	[_addressBookMap enumerateKeysAndObjectsUsingBlock:^(NSString *name, Contact *contact, BOOL *stop) {
+		[contact clearFriend];
+	}];
+}
+
 - (void)dumpContactsDisplayNamesToUserDefaults {
 	LOGD(@"dumpContactsDisplayNamesToUserDefaults");
 	NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:kLinphoneMsgNotificationAppGroupId];