Implement pending seek

CHANGELOG.md

@@ -5,6 +5,7 @@
 - Fix iOS bug which would break size of views when video is displayed with controls on a non full-screen React view. [#1931](https://github.com/react-native-community/react-native-video/pull/1931)
 - Fix video dimensions being undefined when playing HLS in ios. [#1992](https://github.com/react-native-community/react-native-video/pull/1992)
 - Add support for audio mix with other apps for iOS. [#1978](https://github.com/react-native-community/react-native-video/pull/1978)
+- Properly implement pending seek for iOS. [#1994](https://github.com/react-native-community/react-native-video/pull/1994)
 
 ### Version 5.1.0-alpha5
 

ios/Video/RCTVideo.m

@@ -646,6 +646,11 @@ static int const RCTVideoUnset = -1;
           orientation = _playerItem.presentationSize.width > _playerItem.presentationSize.height ? @"landscape" : @"portrait";
         }
 
+        if (_pendingSeek) {
+          [self setCurrentTime:_pendingSeekTime];
+          _pendingSeek = false;
+        }
+        
         if (self.onVideoLoad && _videoLoadStarted) {
           self.onVideoLoad(@{@"duration": [NSNumber numberWithFloat:duration],
                              @"currentTime": [NSNumber numberWithFloat:CMTimeGetSeconds(_playerItem.currentTime)],
@@ -962,7 +967,6 @@ static int const RCTVideoUnset = -1;
     }
     
   } else {
-    // TODO: See if this makes sense and if so, actually implement it
     _pendingSeek = true;
     _pendingSeekTime = [seekTime floatValue];
   }