73 lines
1.9 KiB
JavaScript
73 lines
1.9 KiB
JavaScript
import { readFileSync, writeFileSync, existsSync, mkdirSync } from 'fs';
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import { homedir } from 'os';
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import { join } from 'path';
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// 缓存文件存放在用户主目录下，和 yddict 的做法一致
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const CACHE_DIR = join(homedir(), '.config', 'javinfo');
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const CACHE_FILE = join(CACHE_DIR, 'cache.json');
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// 缓存有效期：7 天（单位毫秒）
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const TTL = 7 * 24 * 60 * 60 * 1000;
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function loadCache() {
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if (!existsSync(CACHE_FILE)) return {};
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try {
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return JSON.parse(readFileSync(CACHE_FILE, 'utf-8'));
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} catch {
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// 文件损坏就当缓存不存在
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return {};
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}
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}
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function saveCache(data) {
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if (!existsSync(CACHE_DIR)) {
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mkdirSync(CACHE_DIR, { recursive: true });
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}
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writeFileSync(CACHE_FILE, JSON.stringify(data, null, 2), 'utf-8');
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}
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export function getCache(id) {
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const cache = loadCache();
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const entry = cache[id];
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if (!entry) return null;
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// 检查是否过期
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const isExpired = Date.now() - entry.cachedAt > TTL;
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if (isExpired) return null;
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return entry.data;
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}
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export function setCache(id, data) {
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const cache = loadCache();
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cache[id] = {
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cachedAt: Date.now(),
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data,
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};
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saveCache(cache);
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}
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export function clearCache() {
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if (existsSync(CACHE_FILE)) {
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writeFileSync(CACHE_FILE, '{}', 'utf-8');
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console.log('缓存已清空');
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}
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}
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export function getConfig() {
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const configFile = join(CACHE_DIR, 'config.json');
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if (!existsSync(configFile)) return {};
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try {
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return JSON.parse(readFileSync(configFile, 'utf-8'));
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} catch {
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return {};
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}
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}
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export function setConfig(data) {
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if (!existsSync(CACHE_DIR)) {
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mkdirSync(CACHE_DIR, { recursive: true });
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}
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const configFile = join(CACHE_DIR, 'config.json');
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writeFileSync(configFile, JSON.stringify(data, null, 2), 'utf-8');
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} |