feat: word-counter fully implemented + lower case revision

backend/src/routes/regextest.route.ts

@@ -34,12 +34,12 @@ export async function regexTest(app: FastifyInstance) {
         }
 
         const result = regexPattern.test(data.test);
-        
+
         let output = "";
         if (result) {
-          output = `The input matches the regular expression!`;
+          output = "the input matches the regular expression!";
         } else {
-          output = `The input does not match the regular expression.`;
+          output = "the input does not match the regular expression.";
         }
 
         reply.header("Content-Type", "text/plain").status(200).send(output);

backend/src/routes/wordcounter.route.ts

@@ -0,0 +1,34 @@
+import { FastifyInstance, FastifyReply, FastifyRequest } from "fastify";
+
+interface RequestBody {
+  input: string;
+}
+
+export async function wordCounter(app: FastifyInstance) {
+  app.post(
+    "/api/word-counter",
+    async (
+      request: FastifyRequest<{ Body: RequestBody }>,
+      reply: FastifyReply,
+    ) => {
+      try {
+        const data = request.body;
+        if (!data) {
+          return reply.status(400).send({ error: "No text declared!" });
+        } else if (data.input == "") {
+          return reply.status(400).send({ error: "No text!" });
+        }
+
+        const output = data.input.trim().split(/\s+/).length;
+
+        reply
+          .header("Content-Type", "text/plain")
+          .status(200)
+          .send(output.toString());
+      } catch (error) {
+        console.error("Convert error:", error);
+        reply.status(500).send({ error: "Error while converting!" });
+      }
+    },
+  );
+}