added endpoints

api/companies.js

@@ -0,0 +1,44 @@
+const express = require('express');
+const router = express.Router();
+const { getConnection, getCompanies, getCompany, getCompanyShares } = require("../libs/mysql.js")
+
+router.get('/', async (req, res) => {
+  const connection = await getConnection()
+  const companies = await getCompanies(connection)
+  connection.end()
+
+  if (!companies[0]) {
+    return res.status(500).send({message: "There are no companies in the databse."})
+  }
+
+  return res.status(200).send(companies)
+});
+
+router.get('/:id', async (req, res) => {
+  const id = req.params.id
+  const connection = await getConnection()
+  const company = await getCompany(connection, id)
+  connection.end()
+
+  if (!company[0]) {
+    return res.status(500).send({message: "There are no company for that id."})
+  }
+
+  return res.status(200).send(company[0])
+});
+
+router.get('/:id/shares', async (req, res) => {
+  const id = req.params.id
+  const connection = await getConnection()
+  const shares = await getCompanyShares(connection, id)
+  connection.end()
+
+  if (!shares[0]) {
+    return res.status(500).send({message: "There are no shares for that company."})
+  }
+
+  return res.status(200).send(shares)
+});
+
+module.exports = router;
+