X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;ds=sidebyside;f=www%2Fjs%2Fremoteglot.js;h=d36bf9e5117bed15911ea36263ed5084fc6f0c48;hb=HEAD;hp=2a15b3e3c22c3acb02440da019c7e1815356c753;hpb=f1ec5afd1d8e6d99ca439df48f3d6a8a966cbf6b;p=remoteglot

diff --git a/www/js/remoteglot.js b/www/js/remoteglot.js
index 2a15b3e..d36bf9e 100644
--- a/www/js/remoteglot.js
+++ b/www/js/remoteglot.js
@@ -174,7 +174,9 @@ let display_fen = null;
  *    start_display_move_num: number
  * }}
  *
- * "start_display_move_num" is the (half-)move number to start displaying the PV at.
+ * "start_display_move_num" is the (half-)move number to start displaying the PV at,
+ * i.e., the index into pv.
+ *
  * "score" is also evaluated at this point. scores can be empty and is frequently
  * sparse; it's generally only really useful for history (we obviously don't know
  * much about how the score will * move during e.g. a PV, except that a mate/TB
@@ -199,7 +201,11 @@ let current_display_line = null;
 /** @type {boolean} @private */
 let current_display_line_is_history = false;
 
-/** @type {?number} @private */
+/** @type {?number} @private
+ *
+ * The highlighted/used/shown move in current_display_line.pv, in terms of absolute index
+ * (not relative to e.g. the start FEN).
+ */
 let current_display_move = null;
 
 /**
@@ -427,6 +433,17 @@ function find_move_num(fen) {
 	return parseInt(fen.split(' ')[5]);
 }
 
+/** @param {!string} fen
+ * @return {!number}
+ *
+ * Return the half-move clock, starting from 0 (and never resetting).
+ */
+function find_halfmove_num(fen) {
+	let move_num = find_move_num(fen);
+	let toplay = find_toplay(fen);
+	return (move_num - 1) * 2 + (toplay === 'w' ? 0 : 1);
+}
+
 /** @param {!number} x
  * @return {!number}
  */
@@ -734,9 +751,8 @@ function add_pv(start_fen, pv, scores, start_display_move_num, opt_limit, opt_sh
 function print_pv(line_num, splicepos, opt_limit, opt_showlast) {
 	let display_line = display_lines[line_num];
 	let pv = display_line.pv;
-	let move_num = find_move_num(display_line.start_fen);
-	let toplay = find_toplay(display_line.start_fen);
-	let halfmove_num = move_num * 2 + (toplay === 'w' ? 0 : 1);  // From two, for simplicity.
+	let halfmove_num = find_halfmove_num(display_line.start_fen) + 2;  // From two, for simplicity.
+	let start_halfmove_num = halfmove_num;
 
 	let ret = document.createDocumentFragment();
 
@@ -797,9 +813,9 @@ function print_pv(line_num, splicepos, opt_limit, opt_showlast) {
 
 		let link = document.createElement('a');
 		link.className = 'move';
-		link.setAttribute('id', 'automove' + line_num + '-' + i);
+		link.setAttribute('id', 'automove' + line_num + '-' + (halfmove_num - start_halfmove_num));
 		link.textContent = pv[i];
-		link.href = 'javascript:show_line(' + line_num + ', ' + i + ');';
+		link.href = 'javascript:show_line(' + line_num + ', ' + (halfmove_num - start_halfmove_num) + ');';
 		ret.appendChild(link);
 	}
 	if (in_tb) {
@@ -1303,7 +1319,7 @@ function update_board() {
 		document.getElementById("searchstats").textContent = "";
 	}
 	if (admin_password !== null) {
-		document.getElementById("searchstats").innerHTML += " | <span style=\"color: red;\">ADMIN MODE (if password is right)</span>";
+		document.getElementById("searchstats").innerHTML += " | <span style=\"color: red;\">ADMIN MODE (if password is right) | <a href=\"javascript:undo_move()\">Undo move</a></span>";
 	}
 
 	// Update the board itself.
@@ -1749,7 +1765,7 @@ function show_line(line_num, move_num) {
 		return;
 	} else {
 		current_display_line = {...display_lines[line_num]};  // Shallow clone.
-		current_display_move = move_num + current_display_line.start_display_move_num;
+		current_display_move = move_num;
 	}
 	current_display_line_is_history = (line_num == 0);
 
@@ -1916,7 +1932,7 @@ function update_move_highlight() {
 			display_lines[1].pv = [];
 		}
 
-		highlighted_move = document.getElementById("automove" + display_line_num + "-" + (current_display_move - current_display_line.start_display_move_num));
+		highlighted_move = document.getElementById("automove" + display_line_num + "-" + current_display_move);
 		if (highlighted_move !== null) {
 			highlighted_move.classList.add('highlight');
 		}
@@ -2242,6 +2258,29 @@ function send_chosen_move(fen, move) {
 	}
 }
 
+function undo_move() {
+	if (admin_password !== null) {
+		let history = current_analysis_data['position']['history'];
+		history = history.slice(0, history.length - 1);
+
+		let position = current_analysis_data['position']['start_fen'];
+		let hiddenboard = chess_from(position, history, history.length);
+		let fen = hiddenboard.fen();
+
+		let url = '/manual-override.pl';
+		url += '?fen=' + encodeURIComponent(fen);
+		url += '&history=' + encodeURIComponent(JSON.stringify(history));
+		url += '&move=null';
+		url += '&player_w=' + encodeURIComponent(current_analysis_data['position']['player_w']);
+		url += '&player_b=' + encodeURIComponent(current_analysis_data['position']['player_b']);
+		url += '&password=' + encodeURIComponent(admin_password);
+
+		console.log(fen, history);
+		fetch(url);  // Ignore the result.
+	}
+}
+window['undo_move'] = undo_move;
+
 function onSnapEnd(source, target) {
 	if (source === target && recommended_move !== null) {
 		source = recommended_move.from;
@@ -2280,7 +2319,7 @@ function onSnapEnd(source, target) {
 		}
 		let line = display_lines[i];
 		if (line.pv[line.start_display_move_num] === move.san) {
-			show_line(i, 0);
+			show_line(i, line.start_display_move_num);
 			return;
 		}
 	}