Source: functions/loadAdvents.js

  1. /**
  2.  * @module loadAdvents
  3.  */
  4. const fs = require('fs');
  5. const validateSchema = require('../schema/validateSchema');
  7. /**
  8.  * @function
  9.  * @name loadAdvents
  10.  * @description Load and Validate Advents from Directory
  11.  * @param {string} dirPath Path to Advents Directory
  12.  * @returns {Object[]} Array of Valid Advents
  13.  * @throws An Error if Invalid Advents exist, printing the File Names
  14.  */
  15. function loadAdvents(dirPath) {
  16.     // Process JSON Files
  17.     const { valid, invalid, tags } = fs.readdirSync(dirPath)
  18.         // Filter *.advent.js(on)? Files
  19.         .filter(name => (
  20.             fs.lstatSync(`${dirPath}/${name}`).isFile() &&
  21.             (name.endsWith('.advent.js') || name.endsWith('.advent.json'))
  22.         ))
  23.         // Load Advents
  24.         .map(name => ({
  25.             name,
  26.             data: require(`${dirPath}/${name}`)
  27.         }))
  28.         // Group Valid and Invalid Advents
  29.         .reduce((advents, { name, data }) => {
  30.             const validatedData = validateSchema(data);
  31.             if (validatedData !== false) {
  32.                 advents.valid.push(validatedData);
  33.                 for (const tag of validatedData.tags) {
  34.                     if (!advents.tags.has(tag)) {
  35.                         advents.tags.set(tag, true);
  36.                     }
  37.                 }
  38.             } else {
  39.                 advents.invalid.push(name);
  40.             }
  41.             return advents;
  42.         }, { valid: [], invalid: [], tags: new Map() });
  43.     // Log Invalid Advents
  44.     if (invalid.length !== 0) {
  45.         throw new Error(
  46.             `Invalid Advents in "${dirPath}"\n` +
  47.             invalid.map(name => `[ERROR]: - ${dirPath}/${name}`).join('\n')
  48.         );
  49.     }
  50.     // Return Valid Advents
  51.     return { advents: valid, tags };
  52. }
  54. module.exports = loadAdvents;