docparse-scraper-add/loadSupplierModule.js

Setup to process a scraper data add api request

/**
 * Parse an upload with ocr text and extract the relevant data. The parsing will
 * be supplier-specific, so here we just perform the common setup steps and pass
 * the upload to the appropriate supplier specific code
 */
var inspect = require('eyespect').inspector({maxLength:20000});
module.exports = function(supplierCode, cb) {
  // get the supplier;
  if (!cb) {
    cb = supplierCode;
    return cb('you must a supplierCode');
  }
  var moduleName = 'docparse-supplier-'+supplierCode.toLowerCase();
  var lib = getLib(moduleName);
  if (!lib) {
    return cb('failed to get supplier module with name: ' + moduleName);
  }
  if (!lib.scraperProcessData) {
    return cb('module ' + moduleName + ' does not export the scraperProcessData function as demanded');
  }
  cb(null, lib);
};

function getLib(moduleName) {
  try {
    var lib = require(moduleName);
    if (!lib) {
      return null;
    }
    return lib;
  } catch(err) {
    inspect(err, 'error loading supplier module for scraper add');
    return null;
  }
}