class CyCache {

    #data = new Map<string, any>();
    keyName = 'cy'
    maxSize = 1000;

    constructor(name: string) {
        this.keyName = name;
    }

    async get(key: string, cb: Function) {
        if (this.#data.size > this.maxSize) {
            this.#data.clear()
        }

        const k = this.keyName + '_' + key
        const temp = this.#data.get(k)
        if (temp) {
            return temp
        }
        const t = (await cb)(key)
        if (t !== null) {
            this.#data.set(k, t)
        }
        return t
    }

    setMaxSize(size: number) {
        this.maxSize = size;
    }

    clear() {
        this.#data.clear()
    }

}

export default CyCache