Move files from lara-chess folder to root directory

pgn-parser.js

@@ -0,0 +1,103 @@
+/**
+ * PGN Parser - Parses PGN files and extracts game data
+ */
+
+function parsePGN(pgnText) {
+    const games = [];
+    // Split by game boundaries - each game starts with [Event
+    const gameBlocks = pgnText.split(/\[\s*Event\s*"/);
+    
+    for (let i = 1; i < gameBlocks.length; i++) {
+        const game = parseGameBlock(gameBlocks[i]);
+        if (game) games.push(game);
+    }
+    
+    return games;
+}
+
+function parseGameBlock(block) {
+    try {
+        const headers = {};
+        const headerRegex = /^\s*\[(\w+)\s+"([^"]*)"\]/g;
+        let match;
+        
+        // Extract all headers
+        let tempBlock = block;
+        while ((match = headerRegex.exec(tempBlock)) !== null) {
+            headers[match[1]] = match[2];
+        }
+        
+        // Extract moves - everything after the last header
+        const lastHeaderEnd = block.lastIndexOf(']"');
+        let movesText = lastHeaderEnd > -1 ? block.substring(lastHeaderEnd + 2).trim() : '';
+        
+        // Remove comments from moves for cleaner parsing
+        const moves = parseMoves(movesText);
+        
+        return {
+            event: headers.Event || '',
+            site: headers.Site || '',
+            date: headers.Date || '',
+            round: headers.Round || '',
+            white: headers.White || '',
+            black: headers.Black || '',
+            result: headers.Result || '',
+            termination: headers.Termination || '',
+            whiteElo: headers.WhiteElo || '',
+            blackElo: headers.BlackElo || '',
+            whiteClock: headers.WhiteClock || '',
+            blackClock: headers.BlackClock || '',
+            moves: moves,
+            isLive: headers.Termination === 'unterminated' || headers.Result === '*'
+        };
+    } catch (e) {
+        console.error('Error parsing game:', e);
+        return null;
+    }
+}
+
+function parseMoves(movesText) {
+    const moves = [];
+    
+    // Remove comments in curly braces
+    movesText = movesText.replace(/\{[^}]*\}/g, '');
+    
+    // Remove move numbers
+    movesText = movesText.replace(/\d+\.\s*/g, '');
+    
+    // Split into individual moves
+    const tokens = movesText.split(/\s+/).filter(t => t.trim());
+    
+    for (const token of tokens) {
+        if (['1-0', '0-1', '1/2-1/2', '*'].includes(token)) {
+            moves.push({ san: token, isResult: true });
+        } else if (token.length > 0) {
+            moves.push({ san: token, isResult: false });
+        }
+    }
+    
+    return moves;
+}
+
+function filterLaraGames(games) {
+    return games.filter(game => 
+        game.white.toLowerCase().includes('kiesewetter') || 
+        game.black.toLowerCase().includes('kiesewetter')
+    );
+}
+
+function getLiveGame(laraGames) {
+    // Return the game that is still in progress
+    return laraGames.find(game => game.isLive) || null;
+}
+
+function getLatestGame(laraGames) {
+    if (laraGames.length === 0) return null;
+    // Sort by round number, return the highest round
+    const sorted = [...laraGames].sort((a, b) => {
+        const roundA = parseInt(a.round) || 0;
+        const roundB = parseInt(b.round) || 0;
+        return roundB - roundA;
+    });
+    return sorted[0];
+}