88 lines
2.2 KiB
TypeScript
88 lines
2.2 KiB
TypeScript
import { CipherView } from "../view/cipher.view";
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const CacheTTL = 3000;
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export class SortedCiphersCache {
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private readonly sortedCiphersByUrl: Map<string, Ciphers> = new Map<string, Ciphers>();
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private readonly timeouts: Map<string, any> = new Map<string, any>();
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constructor(private readonly comparator: (a: CipherView, b: CipherView) => number) {}
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isCached(url: string) {
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return this.sortedCiphersByUrl.has(url);
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}
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addCiphers(url: string, ciphers: CipherView[]) {
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ciphers.sort(this.comparator);
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this.sortedCiphersByUrl.set(url, new Ciphers(ciphers));
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this.resetTimer(url);
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}
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getLastUsed(url: string) {
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this.resetTimer(url);
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return this.isCached(url) ? this.sortedCiphersByUrl.get(url).getLastUsed() : null;
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}
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getLastLaunched(url: string) {
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return this.isCached(url) ? this.sortedCiphersByUrl.get(url).getLastLaunched() : null;
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}
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getNext(url: string) {
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this.resetTimer(url);
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return this.isCached(url) ? this.sortedCiphersByUrl.get(url).getNext() : null;
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}
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updateLastUsedIndex(url: string) {
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if (this.isCached(url)) {
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this.sortedCiphersByUrl.get(url).updateLastUsedIndex();
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}
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}
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clear() {
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this.sortedCiphersByUrl.clear();
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this.timeouts.clear();
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}
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private resetTimer(url: string) {
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clearTimeout(this.timeouts.get(url));
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this.timeouts.set(
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url,
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setTimeout(() => {
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this.sortedCiphersByUrl.delete(url);
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this.timeouts.delete(url);
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}, CacheTTL)
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);
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}
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}
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class Ciphers {
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lastUsedIndex = -1;
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constructor(private readonly ciphers: CipherView[]) {}
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getLastUsed() {
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this.lastUsedIndex = Math.max(this.lastUsedIndex, 0);
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return this.ciphers[this.lastUsedIndex];
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}
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getLastLaunched() {
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const usedCiphers = this.ciphers.filter((cipher) => cipher.localData?.lastLaunched);
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const sortedCiphers = usedCiphers.sort(
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(x, y) => y.localData.lastLaunched.valueOf() - x.localData.lastLaunched.valueOf()
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);
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return sortedCiphers[0];
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}
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getNextIndex() {
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return (this.lastUsedIndex + 1) % this.ciphers.length;
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}
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getNext() {
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return this.ciphers[this.getNextIndex()];
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}
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updateLastUsedIndex() {
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this.lastUsedIndex = this.getNextIndex();
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}
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}
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