h54s/src/files/index.js

const h54sError = require('../error.js');

/**
* h54s SAS Files object constructor
* @constructor
*
*@param {file} file - File added when object is created
*@param {string} macroName - macro name
*
*/
function Files(file, macroName) {
  this._files = {};

  Files.prototype.add.call(this, file, macroName);
}

/**
* Add file to files object
* @param {file} file - Instance of JavaScript File object
* @param {string} macroName - Sas macro name
*
*/
Files.prototype.add = function(file, macroName) {
  if(file && macroName) {
    if(!(file instanceof File || file instanceof Blob)) {
      throw new h54sError('argumentError', 'First argument must be instance of File object');
    }
    if(typeof macroName !== 'string') {
      throw new h54sError('argumentError', 'Second argument must be string');
    }
    if(!isNaN(macroName[macroName.length - 1])) {
      throw new h54sError('argumentError', 'Macro name cannot have number at the end');
    }
  } else {
    throw new h54sError('argumentError', 'Missing arguments');
  }

  this._files[macroName] = [
    'FILE',
    file
  ];
};

module.exports = Files;