import { sys } from "cc"
export class LocalStorageUtil {
    private static _inst:LocalStorageUtil;
    public static getInstance(): LocalStorageUtil{
        if(!this._inst)this._inst=new LocalStorageUtil();
        return this._inst;
    }
    //缓存
    temporary: Map<string, any>;
  
    constructor() {
        this.temporary = new Map<string, any>();
    }
    private _user_id:string|null;
    public setUserId(uk:string):void{
        this._user_id=uk;
    }
    /**
     * 缓存变量存储区别用户
     * @param {*} key 
     * @param {*} value 
     */
    set(key: string, value: any): any {
        if (typeof value === 'object') {
            try {
                value = JSON.stringify(value);
            }
            catch (e) {
                console.error(`解析失败，str = ${value}`);
                return;
            }
        }
        else if (typeof value === 'number') {
            value = value + "";
        }

        if (this._user_id)
            sys.localStorage.setItem(this._user_id + "_" + key, value);
        else
            sys.localStorage.setItem(key,value);
        return value;
    }
    /**
     * 获取缓存变量区别用户
     * @param {*} key 
     * @returns 
     */
    private get(key: string): string { 
        if (null == key) {
            console.error("存储的key不能为空");
            return null!;
        }
        let data;
        if (this._user_id)
            data = sys.localStorage.getItem(this._user_id + "_" + key);
        else
            data = sys.localStorage.getItem(key);
        if (!data) return undefined;
        return data;
       
    }
     /** 获取指定关键字的数值 */
     getNumber(key: string, defaultValue: number = 0): number {
        var r = this.get(key);
        if (r == "0") {
            return Number(r);
        }
        return Number(r) || defaultValue;
    }

    /** 获取指定关键字的布尔值 */
    getBoolean(key: string): boolean {
        var r = this.get(key);
        return Boolean(r) || false;
    }

    /** 获取指定关键字的JSON对象 */
    getJson(key: string, defaultValue?: any): any {
        var r = this.get(key);
        return (r && JSON.parse(r)) || defaultValue;
    }
    /** 获取指定关键字的JSON对象 */
    getObject(key: string): any {
        let data= this.get(key);
        try {
            const jsonObj = JSON.parse(data)
            return jsonObj;
        } catch (error) {
            return data;
        }
    }
    /**
     * 删除缓存变量
     * @param {*} key 
     */
    public removeNormalObject(key: string): any {
        sys.localStorage.removeItem(key);
    }
    /**
     * 缓存变量存储
     * @param {*} key 
     * @param {*} value 
     */
    setNormalObject(key: string, value: any): any {
        sys.localStorage.setItem(key, JSON.stringify(value));
        return value;
    }

    /**
     * 获取缓存变量
     * @param {*} key 
     * @returns 
     */
    getNormalObject(key: string): string {
        let data;
        data = sys.localStorage.getItem(key);
        if (!data) return undefined;
        try {
            const jsonObj = JSON.parse(data)
            return jsonObj;
        } catch (error) {
            return data;
        }
    }

    /**
     * 删除缓存变量
     * @param {*} key 
     */
    removeObject(key: string) {
        sys.localStorage.removeItem(key);
    }

    /**
     * 临时变量存储
     * @param {*} key 
     * @param {*} value 
     */
    setTempObject(key: string, value: any) {
        this.temporary.set(key, value);
    }
    /**
     * 获取临时变量
     * @param {*} key 
     * @returns 
     */
    getTempObject(key: string): any {
        return this.temporary.get(key);
    }
    /**
     * 删除临时变量
     * @param {*} key 
     */
    removeTempObject(key: string) {
        this.temporary.delete(key);
    }
}