Lala, Shahd
40 lines
930 B
TypeScript
40 lines
930 B
TypeScript
import { Injectable } from '@angular/core';
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const STORAGE_KEY = 'nowchess.games';
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const MAX_ENTRIES = 50;
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interface GameEntry {
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id: string;
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addedAt: number;
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}
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@Injectable({ providedIn: 'root' })
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export class GameHistoryService {
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recordGame(gameId: string): void {
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const entries = this.load().filter((e) => e.id !== gameId);
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entries.unshift({ id: gameId, addedAt: Date.now() });
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this.save(entries.slice(0, MAX_ENTRIES));
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}
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getGameIds(): string[] {
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return this.load().map((e) => e.id);
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}
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removeGame(gameId: string): void {
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this.save(this.load().filter((e) => e.id !== gameId));
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}
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private load(): GameEntry[] {
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try {
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const raw = localStorage.getItem(STORAGE_KEY);
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return raw ? (JSON.parse(raw) as GameEntry[]) : [];
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} catch {
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return [];
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}
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}
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private save(entries: GameEntry[]): void {
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localStorage.setItem(STORAGE_KEY, JSON.stringify(entries));
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}
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}
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