Added optional filtering by provider

src/server.js

@@ -285,6 +285,11 @@ fastify.after(() => {
 
     //Get all visits api route
     fastify.get('/api/visits', { onRequest: fastify.auth([fastify.basicAuth, fastify.verifyJWT]) }, async (req, res) => {
+        if(req.query.provider){
+            return await knex.select('shortcode', 'provider', 'timestamp')
+            .from('visits')
+            .where("provider", "=", req.query.provider);
+        }
         return await knex.select('shortcode', 'provider', 'timestamp')
             .from('visits');
     });