From 89f335479b977ce1312f1f891d4326fa691740ed Mon Sep 17 00:00:00 2001
From: Jesse McDonald <nybble41@gmail.com>
Date: Sun, 15 Mar 2020 20:18:30 -0500
Subject: [PATCH] add network time synchronization & fix initial timestamp

---
 index.html  |  1 +
 js/chess.js | 21 ++++++++++++---------
 2 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/index.html b/index.html
index 1f2b64b..9b43308 100644
--- a/index.html
+++ b/index.html
@@ -276,6 +276,7 @@
          //console.STAT = console.real_log;
       </script>
       <script src="gun/gun.js"></script>
+      <script src="gun/nts.js"></script>
       <script src="gun/sea.js"></script>
       <script src="gun/lib/webrtc.js"></script>
       <script>
diff --git a/js/chess.js b/js/chess.js
index 90d731a..764e336 100644
--- a/js/chess.js
+++ b/js/chess.js
@@ -29,9 +29,12 @@ let initialBoard = (function (){
          'rnbqkbnr',
       ],
       player: 'light',
-      timestamp: new Date().getTime(),
    });
-   return function (){ return JSON.parse(init); }
+   return function (){
+      const board = JSON.parse(init);
+      board.timestamp = new Date(Gun.state()).getTime();
+      return board;
+   };
 })();
 
 function cloneJSON(obj){
@@ -305,7 +308,7 @@ function movePiece(priorBoard, side, from, to){
    let board = cloneJSON(undoBoard);
    board.prior = undoBoard;
 
-   board.timestamp = new Date().getTime();
+   board.timestamp = new Date(Gun.state()).getTime();
 
    board.move = {
       side: normalizeSide(side),
@@ -737,7 +740,7 @@ function putMeta(){
       lightName: lightName,
       darkName: darkName,
       moves: countMoves(board),
-      timestamp: board.timestamp || new Date().getTime(),
+      timestamp: board.timestamp || new Date(Gun.state()).getTime(),
       status: stat,
    });
 }
@@ -941,7 +944,7 @@ $(function (){
 
    $('#cb_redo').on('click', function(){
       const board = stepForward($('#cb_board').data('board'));
-      board.timestamp = new Date().getTime();
+      board.timestamp = new Date(Gun.state()).getTime();
       putState(board);
    });
 
@@ -1000,7 +1003,7 @@ $(function (){
          newBoard.prior = board;
          newBoard.move = { side: board.player, pass: true };
          newBoard.player = otherSide(board.player);
-         newBoard.timestamp = new Date().getTime();
+         newBoard.timestamp = new Date(Gun.state()).getTime();
          putState(newBoard);
       }
    });
@@ -1012,7 +1015,7 @@ $(function (){
          newBoard.prior = board;
          newBoard.move = { side: board.player, resign: true };
          newBoard.player = otherSide(board.player);
-         newBoard.timestamp = new Date().getTime();
+         newBoard.timestamp = new Date(Gun.state()).getTime();
          putState(newBoard);
       }
    });
@@ -1053,7 +1056,7 @@ $(function (){
       opt = $(opt);
 
       const then = opt.data('then');
-      const now = new Date().getTime();
+      const now = new Date(Gun.state()).getTime();
       let age_str = '';
       if (then > now) {
          age_str = ' (future)';
@@ -1096,7 +1099,7 @@ $(function (){
 
             opt.data('gameId', d.gameId);
             opt.data('title', lightName + ' vs. ' + darkName + moves + stat);
-            opt.data('then', d.timestamp || new Date().getTime());
+            opt.data('then', d.timestamp || new Date(Gun.state()).getTime());
             opt.addClass('cb-game-option');
             opt.appendTo('#cb_select_game');
             updateTitle(opt);