Refactor code to include headers and set response headers for CSV download in the / route

src/routes/index.js

@@ -5,9 +5,10 @@ const FileService = require('../services/file');
 
 /* GET home page. */
 router.get('/', async function(req, res, next) {
-  const url = 'https://bodacc-datadila.opendatasoft.com/api/explore/v2.1/catalog/datasets/annonces-commerciales/exports/csv?lang=fr&refine=publicationavis%3A%22A%22&refine=publicationavis_facette%3A%22Bodacc%20A%22&refine=familleavis_lib%3A%22Ventes%20et%20cessions%22&timezone=Asia%2FBaghdad&use_labels=true&delimiter=%3B';
+  // const url = 'https://bodacc-datadila.opendatasoft.com/api/explore/v2.1/catalog/datasets/annonces-commerciales/exports/csv?lang=fr&refine=publicationavis%3A%22A%22&refine=publicationavis_facette%3A%22Bodacc%20A%22&refine=familleavis_lib%3A%22Ventes%20et%20cessions%22&timezone=Asia%2FBaghdad&use_labels=true&delimiter=%3B';
+  const url = 'https://bodacc-datadila.opendatasoft.com/api/explore/v2.1/catalog/datasets/annonces-commerciales/exports/csv?lang=fr&refine=publicationavis%3A%22A%22&refine=publicationavis_facette%3A%22Bodacc%20A%22&refine=familleavis_lib%3A%22Ventes%20et%20cessions%22&refine=numerodepartement%3A%2275%22&refine=typeavis_lib%3A%22Avis%20d%E2%80%99annulation%22&timezone=Asia%2FBaghdad&use_labels=true&delimiter=%3B';
 
-  const columns = ['id', 'region_code', 'listepersonnes.personne.typePersonne', 'listepersonnes.personne.denomination', 'listeetablissements.etablissement.adresse', 'listeprecedentproprietaire.personne.nom', 'listeprecedentproprietaire.personne.prenom'];
+  const columns = ['id', 'region_code', 'region_nom_officiel', 'listepersonnes.personne.typePersonne', 'listepersonnes.personne.denomination', 'listepersonnes.personne.numeroImmatriculation.numeroIdentification', 'parutionavisprecedent.nomPublication', 'parutionavisprecedent.dateParution', 'dateparution'];
 
   const fileService = new FileService();
 
@@ -15,13 +16,15 @@ router.get('/', async function(req, res, next) {
   try {
     stream = await fileService.parseFromUrl(url, columns);
   } catch (err) {
-    console.error(err.message);
+    console.error('routes [/] error', err.message);
   }
 
   if ( !stream ) {
     return res.status(500).send('Invalid stream');
   }
 
+  res.setHeader('Content-Disposition', 'attachment; filename="mon_fichier.csv"');
+  res.setHeader('Content-Type', 'text/csv; charset=utf-8');
   stream.pipe(res);
 
   // res.render('index', { title: 'Express' });