const redis = global.yoho.redis;
const logger = global.yoho.logger;

const utils = require('./utils');

module.exports = class extends global.yoho.BaseModel {
    constructor(ctx) {
        super(ctx);
    }

    async getIndex() {
        const keys = [];

        for await (const item of utils.createAsyncKeyIterable('global:yoho:seo:hot:keywords:allIds:page:')) {
            keys.push(item.key)
        }

        return keys;
    }

    async getIds(page) {
        return redis.getAsync(`global:yoho:seo:hot:keywords:allIds:page:${page}`).then(data => {
            if (data) {
                return JSON.parse(data);
            }

            return [];
        }).catch(() => {
            logger.error(`redis get keys hot page ${page}`);
            return [];
        });
    }
};