Add find by headcode for train services

Signed-off-by: Fred Boniface <fred@fjla.uk>

src/controllers/train.controllers.js

@@ -0,0 +1,16 @@
+const train = require('../services/train.services');
+
+async function getByHeadcode(req, res, next){
+  try {
+    var searchHeadcode = req.params.id;
+    res.json(await train.findByHeadcode(searchHeadcode));
+  } catch (err) {
+    console.error('Unknown Error', err.message);
+    err.status = 500;
+    next(err);
+  }
+}
+
+module.exports = {
+  getByHeadcode
+};

src/routes/train.routes.js

@@ -0,0 +1,19 @@
+const express = require('express');
+const router = express.Router();
+const trainController = require('../controllers/train.controllers');
+
+/* GET programming languages. */
+//router.get('/', programmingLanguagesController.get);
+  
+/* POST programming language */
+//router.post('/', programmingLanguagesController.create);
+
+/* PUT programming language */
+//router.put('/:id', programmingLanguagesController.update);
+
+/* DELETE programming language */
+//router.delete('/:id', programmingLanguagesController.remove);
+
+router.get('/headcode/:id', trainController.getByHeadcode);
+
+module.exports = router;

src/services/trainService.services.js

@@ -0,0 +1,22 @@
+const log     = require('../utils/log.utils');
+const db      = require('./dbAccess.services');
+const clean   = require('../utils/sanitizer.utils');
+
+async function findByHeadcode(headcode) {
+  const sanitizedHeadcode = clean.removeNonAlphanumeric(headcode);
+  log.out(`trainServiceServices.findByHeadcode: Searching for headcode ${sanitizedHeadcode}`, 'dbug');
+  const now = new Date();
+  const dayMap = ['su', 'm', 't', 'w', 'th', 'f', 's'];
+  const shortDay = dayMap[now.getDay()]; // Fetch short day from map
+  const query = {
+    headcode: sanitizedHeadcode,
+    scheduleStartDate: {$lte: now},
+    scheduleEndDate: {$gte: now},
+    daysRun: {$in: [shortDay]}
+  };
+  return db.query('timetable', query);
+}
+
+module.exports = {
+  findByHeadcode,
+};