Extract labels for phone numbers.

// FREEBIE

src/Contacts/Contact.h

@@ -60,6 +60,8 @@ typedef NS_ENUM(NSUInteger, OWSPhoneNumberType) {
 
 - (instancetype)initWithContact:(CNContact *)contact;
 
+- (OWSPhoneNumberType)phoneNumberTypeForPhoneNumber:(NSString *)recipientId;
+
 #endif // TARGET_OS_IOS
 
 + (NSComparator)comparatorSortingNamesByFirstThenLast:(BOOL)firstNameOrdering;

src/Contacts/Contact.m

@@ -229,6 +229,19 @@ NS_ASSUME_NONNULL_BEGIN
     };
 }
 
+- (OWSPhoneNumberType)phoneNumberTypeForPhoneNumber:(NSString *)recipientId
+{
+    OWSAssert(recipientId.length > 0);
+    OWSAssert([self.textSecureIdentifiers containsObject:recipientId]);
+
+    NSNumber *value = self.phoneNumberTypeMap[recipientId];
+    OWSAssert(value);
+    if (!value) {
+        return OWSPhoneNumberTypeUnknown;
+    }
+    return (OWSPhoneNumberType)value.intValue;
+}
+
 @end
 
 NS_ASSUME_NONNULL_END