app.js

// Packages
const fs = require('fs');
// const path = require('path');
const chalk = require('chalk');
const config = require('./config');

// Application code
const validator = require('./validator/schematron-validator');
const server = require('./server');
const example = fs.readFileSync('./test/example.xml', 'utf-8');

// Configuration
const basePath = config.basePath;
var schematronFile = '';

// check for schematron
if (!fs.existsSync(config.schematronPath)){
  console.log(chalk.red('ERROR:') + ' you need to have schematron as listed in config');
  return '';
}
else {
  schematronFile = fs.readFileSync(config.schematronPath, 'utf-8');
  console.log(schematronFile.length + ' schematron length check');
}

// check for voc.xml
if (!fs.existsSync(config.vocPath)){
  console.log(chalk.red('ERROR:') + ' you need to have voc.xml as listed in config');
  return '';
}


// check for repos folder
if (!fs.existsSync('./repos')){
  console.log(chalk.red('ERROR:') + ' you need to have creates repos directory in main project folder');
  return '';
}

// check for GitHub repo. If exists, pull then start server 
if (!fs.existsSync(basePath)){
  console.log(chalk.red('ERROR:') + ' you need to have cloned https://github.com/HL7/C-CDA-Examples to repos folder');
  return '';
}

// Gets all XML paths from files in repository

const checkStatus = () => {
  console.log('checking that validation passes on example file');
  var results = validator(example, schematronFile);
  if (!results || !results.schema || !results.schema.pass) {
    console.log(chalk.red('ERROR:') + ' the sample schema validation did not pass. Check environment.');
    return '';
  }
  else if (!results || !results.schematron || results.schematron.errorCount !== 0){
    console.log(chalk.red('ERROR:') + ' the sample schematron validation did not pass. Check environment.');
    return '';
  }
  else {
    console.log(chalk.green('Sample XML validation returned no errors!'));
    startServer();
  }
};

const startServer = () => {
  server(config, schematronFile);
};

checkStatus();