add live game UI with board rendering, timers, and SAN move list

2026-02-27 12:27:02 +01:00
parent 0c3ef7da4a
commit 36727cdb24
5 changed files with 853 additions and 16 deletions
@@ -0,0 +1,32 @@
+export function formatClock(ms) {
+  if (!Number.isFinite(ms) || ms < 0) {
+    return "--:--";
+  }
+
+  const totalSeconds = Math.floor(ms / 1000);
+  const minutes = Math.floor(totalSeconds / 60);
+  const seconds = totalSeconds % 60;
+  return `${String(minutes).padStart(2, "0")}:${String(seconds).padStart(2, "0")}`;
+}
+
+export function parseFenBoard(fen) {
+  const boardPart = (fen || "").split(" ")[0] || "8/8/8/8/8/8/8/8";
+  const rows = boardPart.split("/");
+  const board = {};
+
+  for (let r = 0; r < 8; r += 1) {
+    let file = 0;
+    for (const fenChar of rows[r]) {
+      const num = Number(fenChar);
+      if (!Number.isNaN(num)) {
+        file += num;
+        continue;
+      }
+      const square = `${"abcdefgh"[file]}${8 - r}`;
+      board[square] = fenChar;
+      file += 1;
+    }
+  }
+
+  return board;
+}