claude (duplicate_chess)
29 lines
868 B
TypeScript
29 lines
868 B
TypeScript
import type { SyncMove, HistoryEntry } from './types';
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/** Coordinate notation, e.g. "e2e4" or "e7e8q". */
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export function toCoordinate(move: SyncMove): string {
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return `${move.from}${move.to}${move.promotion ?? ''}`;
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}
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export interface SavedGame {
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variant: 'duplicate-chess';
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version: 1;
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moves: HistoryEntry[];
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}
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export function serialize(history: HistoryEntry[]): string {
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const data: SavedGame = { variant: 'duplicate-chess', version: 1, moves: history };
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return JSON.stringify(data, null, 2);
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}
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export function deserialize(json: string): HistoryEntry[] {
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const data = JSON.parse(json) as Partial<SavedGame>;
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if (data.variant !== 'duplicate-chess' || !Array.isArray(data.moves)) {
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throw new Error('Not a duplicate-chess save file');
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}
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if (data.version !== 1) {
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throw new Error('Unsupported save version');
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}
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return data.moves;
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}
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