epl-fixtures/src/cache.js

Fixtures for Premier League clubs

'use strict';

const fs = require('fs');
const path = require('path');
const htmlParser = require('./htmlParser');

/**
 * Load cached file
 * @param allOrClubId
 * @param callback
 */
exports.loadFromCache = function (allOrClubId, callback) {
  const html = fs.readFileSync(this.cachePath(allOrClubId)).toString();
  htmlParser(html, callback);
}

/**
 * Check whether or not a file exists in cache
 * @param allOrClubId
 * @returns {boolean}
 */
exports.isCached = function (allOrClubId) {
  try {
    const cachedFile = fs.statSync(this.cachePath(allOrClubId));

    const yesterday = new Date();
    yesterday.setDate(yesterday.getDate() - 1);

    return cachedFile.mtime > yesterday;
  } catch (e) {
    return false;
  }
}

/**
 * Save HTML to cache
 * @param html
 * @param allOrClubId
 */
exports.saveToCache = function (html, allOrClubId) {
  fs.writeFile(this.cachePath(allOrClubId), html);
}

/**
 * Path to cached file
 * @param allOrClubId
 * @returns {Promise.<*>}
 */
exports.cachePath = function (allOrClubId) {
  return path.resolve(__dirname, '../cache/' + allOrClubId + '.html');
}