warrior-code-api/models/Map.js

API for Warrior-Code.

'use strict';

const fs = require('fs');
const path = require('path');
const Promise = require('bluebird');
const mongoose = require('mongoose');

const MAPS_DIR = process.env.WARRIORJS_MAPS_DIR || path.join('..', 'maps')

const MapSchema = new mongoose.Schema({

  // Group the maps by a specific world.
  world: { type: String, required: true },

  // Name for the map. Example: "Level 1".
  name: { type: String, required: true },

  // Optional description.
  description: { type: String },

  // Weight to order the maps in a world. Works as levels.
  weight: { type: Number, default: 0 },

  // All the data to evaluate the map.
  // data: { type: mongoose.Schema.Mixed, required: true }

  // The route to the map data.
  dataFile: { type: String, required: true }

});

/**
 * Read and return the map data as a JavaScript object.
 * @return {Promise} promise.
 */
MapSchema.methods.getMapData = () => {
  // Build and return the promise.
  return new Promise((resolve, reject) => {
    // Open the file.
    fs.readFile(path.join(MAPS_DIR, this.dataFile), 'utf-8', (err, data) => {
      // Pass any errors.
      if (err) reject(err);

      try {
        // Parse the data.
        data = JSON.parse(data);

        // Resolve with the parse map.
        resolve(data);
      } catch(err) {
        // Pass any errors.
        reject(err);
      }
    });
  });
};

module.exports = mongoose.model('Map', MapSchema);