Improve the call status messages in conversation view.

// FREEBIE

src/Messages/TSCall.h

@@ -13,6 +13,9 @@ typedef enum {
     RPRecentCallTypeIncoming = 1,
     RPRecentCallTypeOutgoing,
     RPRecentCallTypeMissed,
+    // These call types are used until the call connects.
+    RPRecentCallTypeOutgoingIncomplete,
+    RPRecentCallTypeIncomingIncomplete,
 } RPRecentCallType;
 
 @interface TSCall : TSInteraction <OWSReadTracking>
@@ -26,6 +29,8 @@ typedef enum {
 
 - (instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 
+- (void)updateCallType:(RPRecentCallType)callType;
+
 @end
 
 NS_ASSUME_NONNULL_END

src/Messages/TSCall.m

@@ -68,6 +68,10 @@ NSUInteger TSCallCurrentSchemaVersion = 1;
             return NSLocalizedString(@"OUTGOING_CALL", @"");
         case RPRecentCallTypeMissed:
             return NSLocalizedString(@"MISSED_CALL", @"");
+        case RPRecentCallTypeOutgoingIncomplete:
+            return NSLocalizedString(@"OUTGOING_INCOMPLETE_CALL", @"");
+        case RPRecentCallTypeIncomingIncomplete:
+            return NSLocalizedString(@"INCOMING_INCOMPLETE_CALL", @"");
     }
 }
 
@@ -91,6 +95,20 @@ NSUInteger TSCallCurrentSchemaVersion = 1;
     }];
 }
 
+#pragma mark - Methods
+
+- (void)updateCallType:(RPRecentCallType)callType
+{
+    _callType = callType;
+
+    [self.dbConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *_Nonnull transaction) {
+        [self saveWithTransaction:transaction];
+
+        // redraw any thread-related unread count UI.
+        [self touchThreadWithTransaction:transaction];
+    }];
+}
+
 #pragma mark - Logging
 
 + (NSString *)tag