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- import {
- EXPIRE
- } from '../config/app';
- class Cache {
- constructor(handler) {
- this.cacheSetHandler = uni.setStorageSync;
- this.cacheGetHandler = uni.getStorageSync;
- this.cacheClearHandler = uni.removeStorageSync;
- this.cacheExpire = 'UNI-APP-CRMEB:TAG';
- this.clearOverdue();
- }
-
- time() {
- return Math.round(new Date() / 1000);
- }
-
-
- strTotime(expiresTime){
- let expires_time = expiresTime.substring(0, 19);
- expires_time = expires_time.replace(/-/g, '/');
- return Math.round(new Date(expires_time).getTime() / 1000);
- }
-
-
- setExpireCaheTag(key, expire) {
- expire = expire !== undefined ? expire : EXPIRE;
- if (typeof expire === 'number') {
- let tag = this.cacheGetHandler(this.cacheExpire), newTag = [],newKeys = [];
- if (typeof tag === 'object' && tag.length) {
- newTag = tag.map(item => {
- newKeys.push(item.key);
- if (item.key === key) {
- item.expire = expire === 0 ? 0 : this.time() + expire;
- }
- return item;
- });
- }
- if (!newKeys.length || newKeys.indexOf(key) === -1) {
- newTag.push({
- key: key,
- expire: expire === 0 ? 0 : this.time() + expire
- });
- }
- this.cacheSetHandler(this.cacheExpire, newTag);
- }
- }
-
- getExpireCahe(key, $bool) {
- try {
- let tag = this.cacheGetHandler(this.cacheExpire),time = 0,index = false;
- if (typeof tag === 'object' && tag.length) {
- tag.map((item,i) => {
- if(item.key === key){
- time = item.expire
- index = i
- }
- });
- if (time) {
- let newTime = parseInt(time);
- if (time && time < this.time() && !Number.isNaN(newTime)) {
- if ($bool === undefined || $bool === true) {
- this.cacheClearHandler(key);
- if(index !== false){
- tag.splice(index,1)
- this.cacheSetHandler(this.cacheExpire,tag);
- }
- }
- return false;
- } else
- return true;
- } else {
- return !!this.cacheGetHandler(key);
- }
- }
- return false;
- } catch (e) {
- return false;
- }
- }
-
- set(key, data, expire) {
- if (data === undefined) {
- return true;
- }
- if (typeof data === 'object')
- data = JSON.stringify(data);
- try {
- this.setExpireCaheTag(key, expire);
- return this.cacheSetHandler(key, data);
- } catch (e) {
- return false;
- }
- }
-
- has(checkwhethethecacheexists) {
- this.clearOverdue();
- return this.getExpireCahe(checkwhethethecacheexists);
- }
-
- get(key, $default, expire) {
- this.clearOverdue();
- try {
- let isBe = this.getExpireCahe(key);
- let data = this.cacheGetHandler(key);
- if (data && isBe) {
- if (typeof $default === 'boolean')
- return JSON.parse(data);
- else
- return data;
- } else {
- if (typeof $default === 'function') {
- let value = $default();
- this.set(key, value, expire);
- return value;
- } else {
- this.set(key, $default, expire);
- return $default;
- }
- }
- } catch (e) {
- return null;
- }
- }
-
- clear(key) {
- try {
- let cahceValue = this.cacheGetHandler(this.cacheExpire),
- index = false;
- if (cahceValue && typeof cahceValue === 'object' && cahceValue.length) {
- cahceValue.map((item, i) => {
- if (item.key === key) {
- index = i;
- }
- });
- if (index !== false) {
- cahceValue.splice(index, 1);
- }
- this.cacheSetHandler(this.cacheExpire, cahceValue);
- }
- return this.cacheClearHandler(key);
- } catch (e) {
- return false;
- }
- }
-
- clearOverdue() {
- let cahceValue = this.cacheGetHandler(this.cacheExpire),
- time = this.time(),
- newBeOverdueValue = [],
- newTagValue = [];
- if (cahceValue && typeof cahceValue === 'object' && cahceValue.length) {
- cahceValue.map(item => {
- if (item) {
- if ((item.expire !== undefined && item.expire > time) || item.expire === 0) {
- newTagValue.push(item);
- } else {
- newBeOverdueValue.push(item.key);
- }
- }
- });
- }
-
- if (newTagValue.length !== cahceValue.length) {
- this.cacheSetHandler(this.cacheExpire, newTagValue);
- }
-
- newBeOverdueValue.forEach(k => {
- this.cacheClearHandler(k);
- })
- }
- }
- export default new Cache;
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