refactor progress

packages/virus_scan/src/cache/IVirusHashCache.tsx

@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+export interface IVirusHashCache {
+	isKnownVirusHash(fileHash: string): Promise<boolean>;
+	cacheVirusHash(fileHash: string): Promise<void>;
+}

packages/virus_scan/src/cache/IVirusScanCacheStore.tsx

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+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+export interface IVirusScanCacheStore {
+	get<T>(key: string): Promise<T | null>;
+	set<T>(key: string, value: T, ttlSeconds?: number): Promise<void>;
+}

packages/virus_scan/src/cache/VirusHashCache.tsx

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+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import type {IVirusHashCache} from '@fluxer/virus_scan/src/cache/IVirusHashCache';
+import type {IVirusScanCacheStore} from '@fluxer/virus_scan/src/cache/IVirusScanCacheStore';
+import {seconds} from 'itty-time';
+
+export interface VirusHashCacheConfig {
+	keyPrefix?: string;
+	ttlSeconds?: number;
+}
+
+export class VirusHashCache implements IVirusHashCache {
+	private readonly keyPrefix: string;
+	private readonly ttlSeconds: number;
+
+	constructor(
+		private cacheStore: IVirusScanCacheStore,
+		config: VirusHashCacheConfig = {},
+	) {
+		this.keyPrefix = config.keyPrefix ?? 'virus';
+		this.ttlSeconds = config.ttlSeconds ?? seconds('7 days');
+	}
+
+	async isKnownVirusHash(fileHash: string): Promise<boolean> {
+		const cachedValue = await this.cacheStore.get(this.buildCacheKey(fileHash));
+		return cachedValue != null;
+	}
+
+	async cacheVirusHash(fileHash: string): Promise<void> {
+		await this.cacheStore.set(this.buildCacheKey(fileHash), 'true', this.ttlSeconds);
+	}
+
+	private buildCacheKey(fileHash: string): string {
+		return `${this.keyPrefix}:${fileHash}`;
+	}
+}