chore(#10): Delegates the task of setting the url to the backend API

* API now returns a full URL instead of a stub
* Frontend now returns the value from the API as is
* Configuration adds a scheme

config/config.yaml

@@ -1,6 +1,7 @@
 Server:
   host: 127.0.0.1
   port: 8000
+  scheme: http
   cors: False
   static_folder: frontend/build
 

frontend/src/components/URLShortener/URLShortener.tsx

@@ -38,9 +38,8 @@ export default function URLShortener() {
         })
         .then((response) => {
           if (response) {
-            const code: string = response.data.url;
-            const fullShortenedUrl: string = `http://127.0.0.1:8000/r/${code}`;
-            setShortenedUrl(fullShortenedUrl);
+            const shortUrl: string = response.data.url;
+            setShortenedUrl(shortUrl);
             setShowInput(true);
           }
         });

shortenit/web.py

@@ -1,5 +1,6 @@
 import logging
 from pathlib import Path
+from urllib.parse import urlunparse
 
 import trafaret
 from flask import Flask, abort, redirect, request, send_from_directory
@@ -62,6 +63,16 @@ class SiteHandler:
     def _get_server_config(self):
         return self.configuration.get("Server", None)
 
+    def _get_host(self):
+        host = self._get_server_config()["host"]
+        port = self._get_server_config()["port"]
+        scheme = self._get_server_config()["scheme"]
+        return scheme, host, port
+
+    def _get_url(self, stub):
+        scheme, host, port = self._get_host()
+        return urlunparse((scheme, f"{host}:{port}", f"/r/{stub}", "", "", ""))
+
     def shortenit(self):
         data = request.get_json()
         try:
@@ -72,12 +83,13 @@ class SiteHandler:
             self.logger.error(e)
             abort(400)
         try:
-            short_url = self.shorten_url(
+            stub = self.shorten_url(
                 self.configuration.get("Shortener", None),
                 self.database,
                 data["url"],
                 data["timestamp"],
             )
+            short_url = self._get_url(stub)
         except KeyError as e:
             self.logger.error(e)
             abort(400)