const redis = global.yoho.redis;

async function* createAsyncKeyIterable(preKey) {
    let page = 1;
    let isExists = true;

    while (isExists) {
        let key = `${preKey}${page}`;
        let result = await redis.existsAsync(key);

        result = Number(result);

        if (result === 1) {
            yield { page, key };
            page++;
        } else {
            isExists = false;
        }
    }
}

module.exports = {
    createAsyncKeyIterable
};