/**
 * LocalStorage - 混合App模式，本地存储同步工具
 *  用于区分不同开发环境读取不同数据
 * @author Tevin
 */

import Taro from '@tarojs/taro';

export class LocalStorage {
    constructor() {
        this._data = {
            prefixType: '',
        };
    }

    // 初始化
    initial(prefixType) {
        this._data.prefixType = prefixType;
    }

    load(key) {
        const name = 'AiSim.' + this._data.prefixType + '@' + key;
        return JSON.parse(Taro.getStorageSync(name) || '{}');
    }

    save(key, value) {
        if (typeof value !== 'object') {
            throw new Error('LocalStorage save 方法，value 只接收 Object ！');
        }
        const name = 'AiSim.' + this._data.prefixType + '@' + key;
        Taro.setStorageSync(name, JSON.stringify(value || {}));
    }

    remove(key) {
        const name = 'AiSim.' + this._data.prefixType + '@' + key;
        Taro.removeStorageSync(name);
    }

    getKeys() {
        const info = Taro.getStorageInfoSync();
        const keys = [];
        const prefix = 'AiSim.' + this._data.prefixType + '@';
        info.keys.forEach(storageKey => {
            if (storageKey.indexOf(prefix) === 0) {
                const keyName = storageKey.split('@')[1];
                keys.push(keyName);
            }
        });
        return keys;
    }

    searchKey(key) {
        const matches = [];
        this.getKeys().forEach(keyName => {
            if (keyName.indexOf(key) >= 0) {
                matches.push(keyName);
            }
        });
        return matches;
    }

}

export const $localStorage = new LocalStorage();