65 lines
1.8 KiB
JavaScript
65 lines
1.8 KiB
JavaScript
/** 中医术语表本地缓存（与 doctor-reception-wx traditional-chinese-medicine-all 配合） */
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/** v2：条目含 pinyin_full / pinyin_initials 展示串 */
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export const STORAGE_KEY = 'xk_traditional_tcm_v2';
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/** 默认 3 天（秒），与后端 TRADITIONAL_TCM_CACHE_TTL_SECONDS 默认一致 */
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export const DEFAULT_TTL_MS = 259200 * 1000;
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function isPayloadValid(obj) {
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return (
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obj &&
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Array.isArray(obj.diseases) &&
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Array.isArray(obj.method) &&
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Array.isArray(obj.syndrome)
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);
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}
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/**
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* 未过期则返回 { diseases, method, syndrome }，否则 null
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* @returns {{ diseases: any[], method: any[], syndrome: any[] } | null}
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*/
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export function loadValid() {
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try {
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const raw = uni.getStorageSync(STORAGE_KEY);
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if (raw == null || raw === '') return null;
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const obj = typeof raw === 'string' ? JSON.parse(raw) : raw;
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if (!obj || typeof obj !== 'object') return null;
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const { expiresAt, diseases, method, syndrome } = obj;
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if (typeof expiresAt !== 'number' || expiresAt <= Date.now()) return null;
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const p = { diseases, method, syndrome };
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return isPayloadValid(p) ? p : null;
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} catch (e) {
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return null;
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}
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}
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/**
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* @param {{ diseases: any[], method: any[], syndrome: any[] }} payload
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* @param {number} expiresAtMs
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* @returns {boolean} 是否成功写入 storage
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*/
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export function save(payload, expiresAtMs) {
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if (!isPayloadValid(payload) || typeof expiresAtMs !== 'number') {
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return false;
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}
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try {
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const toStore = {
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diseases: payload.diseases,
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method: payload.method,
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syndrome: payload.syndrome,
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expiresAt: expiresAtMs,
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};
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JSON.stringify(toStore);
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uni.setStorageSync(STORAGE_KEY, JSON.stringify(toStore));
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return true;
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} catch (e) {
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console.error('traditionalTcm local save failed', e);
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uni.showToast({
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title: '本地缓存写入失败，本次仍可使用',
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icon: 'none',
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});
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return false;
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}
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}
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