closes #187

templates/macros.html

@@ -55,6 +55,29 @@
 $('#videoplayer').addClass("vjs-16-9");
 $('#videoplayer').css("width");
 $(function() {
+	//resume
+	var progress_key = "progress_{{ lecture.id }}";
+	var seconds_played;
+	if (localStorage) {
+		seconds_played = localStorage.getItem(progress_key);
+		if (!seconds_played) {
+			seconds_played = 0;
+		} else {
+			videojs('videoplayer').currentTime(seconds_played);
+		}
+	}
+	videojs("videoplayer").on("timeupdate", function() {
+		if (localStorage) {
+			var player_cur_Time = Math.round(videojs("videoplayer").currentTime());
+			if(Math.abs(player_cur_Time - seconds_played) >= 10) {
+				seconds_played = player_cur_Time;
+				localStorage.setItem( progress_key , seconds_played)
+			}
+		}
+
+	});
+
+	//autoplay
 	var playerplay = function() {
 		if ($('#videoplayer').data("wasnotplayed") == 1) {
 			videojs('videoplayer').play();