Calculate distance between PLZs if given

composer.json

@@ -12,6 +12,7 @@
         "doctrine/doctrine-migrations-bundle": "^3.1",
         "doctrine/orm": "^2.8",
         "easycorp/easyadmin-bundle": "^3",
+        "mjaschen/phpgeo": "^3.2",
         "sensio/framework-extra-bundle": "^6.1",
         "symfony/asset": "5.2.*",
         "symfony/console": "5.2.*",

src/Controller/OfferController.php

@@ -8,6 +8,8 @@ use App\Form\OfferingFormType;
 use App\Repository\OfferingRepository;
 use App\Repository\WishRepository;
 
+use App\Service\PlzToCoordinate;
+use App\Service\DistanceCalculator;
 
 use Doctrine\ORM\EntityManagerInterface;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
@@ -73,12 +75,27 @@ class OfferController extends AbstractController
     }
 
     #[Route('/offer/{id}', name: 'show_offer')]
-    public function show_offer(Offering $offer, WishRepository $wishRepository): Response
+    public function show_offer(Offering $offer, WishRepository $wishRepository, PlzToCoordinate $plzconverter, DistanceCalculator $distanceCalculator): Response
     {
+        $distance = 0;
+        $user = $this->getUser();
+        $offerPlz = $offer->getZipCode();
+        
+        if (isset($user))
+        {
+            $userPlz = $user->getZipCode();
+        }
+
+        if (isset($userPlz)) 
+        {
+            $distance = $distanceCalculator->calculateDistance($plzconverter->getCoordinates($offerPlz), $plzconverter->getCoordinates($userPlz));
+        }
+
         return $this->render('app/offer.html.twig', [
-            'user' => $this->getUser(),
+            'user' => $user,
             'offer' => $offer,
             'wishes' => $wishRepository->findByUser($offer->getByUser()),
+            'distance' => $distance,
         ]);
     }
 

src/Service/DistanceCalculator.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Service;
+
+use Location\Coordinate;
+use Location\Distance\Vincenty;
+
+class DistanceCalculator
+{
+    public function calculateDistance(Coordinate $coordinate1, Coordinate $coordinate2)
+    {
+        $calculator = new Vincenty();
+
+        $distance = $calculator->getDistance($coordinate1, $coordinate2);
+
+        $distance = round($distance / 1000);
+
+        return $distance;
+    }
+}

src/Service/PlzToCoordinate.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Service;
+
+use Location\Coordinate;
+
+class PlzToCoordinate
+{
+    public function getCoordinates(int $plz)
+    {
+        $content = file_get_contents("https://swisspost.opendatasoft.com/api/records/1.0/search/?dataset=plz_verzeichnis_v2&q=postleitzahl%3D" . $plz);
+        $result  = json_decode($content);
+
+        if (isset($result->records[0]->fields->geo_point_2d[0]) && isset($result->records[0]->fields->geo_point_2d[1])) {
+            $coordinate = new Coordinate($result->records[0]->fields->geo_point_2d[0], $result->records[0]->fields->geo_point_2d[1]);
+        }
+
+        return $coordinate;
+    }
+}

symfony.lock

@@ -106,6 +106,9 @@
     "laminas/laminas-zendframework-bridge": {
         "version": "1.2.0"
     },
+    "mjaschen/phpgeo": {
+        "version": "3.2.1"
+    },
     "monolog/monolog": {
         "version": "2.2.0"
     },
@@ -342,6 +345,9 @@
     "symfony/polyfill-php80": {
         "version": "v1.22.1"
     },
+    "symfony/polyfill-php81": {
+        "version": "v1.23.0"
+    },
     "symfony/polyfill-uuid": {
         "version": "v1.22.1"
     },

templates/app/offer.html.twig

@@ -17,17 +17,30 @@
         <div class="alert alert-info" role="alert">This is your offer!</div>
     {% endif %}
 
-    <h1 class="mb-3">{{ offer.title }}</h1>
-
     <div class="show-offer-container d-flex flex-wrap">
         <div class="show-img-container">
             <img class="mb-3 img-fluid rounded" alt="Generic placeholder image" src="{{ asset('uploads/photos/' ~ offer.photofilename) }}">
         </div>
-        <div class="show-offer-info">
+        <div class="show-offer-info w-50">
+            <h1 class="mb-3">{{ offer.title }}</h1>
+            <div class="mb-3 d-flex">
+                <p class="pr-3">
+                    <i class="fas fa-user"></i> 
+                    {% if offer.byUser == user %}
+                        Me
+                    {% else %}
+                        {{ offer.byUser }}
+                    {% endif %}
+                </p>
+                <p class="pr-3">
+                    <i class="fas fa-map-marker-alt"></i> {{ offer.zipCode }} 
+                    {% if distance > 0 %}
+                        (ca. {{ distance }} km)
+                    {% endif %}
+                </p>
+            </div>
           <h3>Description</h3>
           <p>{{ offer.description }}</p>
-          <h3>From</h3>
-          <p>{% if offer.byUser == user %}Me{% else %}{{ offer.byUser }}{% endif %} in {{ offer.zipCode }}</p>
         </div>
     </div>