Implemented repository mapper, and venta show

app/src/Controller/Ventas/Comentarios.php

@@ -0,0 +1,22 @@
+<?php
+namespace Incoviba\Controller\Ventas;
+
+use Incoviba\Common\Implement\Exception\EmptyResult;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Incoviba\Repository;
+
+class Comentarios
+{
+    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, Repository\Venta\Comentario $comentarioRepository): ResponseInterface
+    {
+        $output = ['total' => 0];
+        try {
+            $comentarios = $comentarioRepository->fetchAll();
+            $output['comentarios'] = $comentarios;
+            $output['total'] = count($comentarios);
+        } catch (EmptyResult) {}
+        $response->getBody()->write(json_encode($output));
+        return $response->withHeader('Content-Type', 'application/json');
+    }
+}