kool-save-data/src/lib/save-data/save-data.js

A simple save data module for my Node.js projects.

'use-strict';

const fs = require('fs'),
      path = require('path'),
      logger = require('kool-logger');

class SaveData {
  constructor(id, data = {}) {
    this.id = id;
    this.data = data;
    this.fileName = `${id}.json`;
  }

  modifyData(data) {
    Object.assign(this.data, data);
  }

  save(dataPath, data = this.data) {
    dataPath = path.resolve(dataPath);
    fs.writeFileSync(path.join(dataPath, this.fileName), JSON.stringify(data, null, 4));
  }

  getSaved(dataPath) {
    dataPath = path.resolve(dataPath);
    try {
      return JSON.parse(fs.readFileSync(path.join(dataPath, this.fileName)));
    } catch (err) {
      logger.error(`Error getting save data:\n${err.stack}`);
      return err;
    }
  }

  load(dataPath) {
    this.data = this.getSaved(dataPath);
  }
}

module.exports = SaveData;