New endpoint to submit guesses.

backend-laravel/app/Http/Controllers/VilleController.php

@@ -6,6 +6,7 @@
 
 use App\Models\Cycle;
 use App\Models\Ville;
+use App\Utility\CityComparator;
 
 class VilleController extends Controller
 {
@@ -43,6 +44,13 @@ public function today()
         return $ville;
     }
 
+    public function guess($id)
+    {
+        // TODO: clean id
+        $a = new CityComparator();
+        return $a->compareToToday($id);
+    }
+
     public function all()
     {
         $villes = Ville::all();

backend-laravel/app/Utility/CityComparator.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace App\Utility;
+
+use App\Models\Cycle;
+use App\Models\Ville;
+
+class CityComparator
+{
+    public function compareToToday($guessedId)
+    {
+        $current = Cycle::getCurrentVille();
+
+        $guessedCity = Ville::with('canton')->
+            where('id', $guessedId)->firstOrFail();
+
+        if($current->id == $guessedId)
+        {
+            return ['city' => $guessedCity];
+        }
+
+        return [
+            'city' => $guessedCity,
+            'canton_diff' =>  $current->canton_id == $guessedCity->canton_id ,
+            'pop_diff' => $current->population <=> $guessedCity->population,
+            'lang_diff' => self::compareLang($current, $guessedCity),
+            'position_diff' => self::comparePosition()
+        ];
+    }
+
+    private static function compareLang($current, $guessedCity)
+    {
+        $currentLanguesIds = $current->langues->map(
+            function($l)
+            {
+                return $l->id;
+            }
+        )->toArray();
+
+        $guessedLanguesIds = $guessedCity->langues->map(
+            function($l)
+            {
+                return $l->id;
+            }
+        )->toArray();
+
+        return count(array_diff($currentLanguesIds, $guessedLanguesIds));
+    }
+
+    private static function comparePosition()
+    {
+        return [];
+    }
+}

backend-laravel/routes/api.php

@@ -22,3 +22,4 @@
 
 Route::get('/ville/today', [VilleController::class, 'today']);
 Route::get('/villes', [VilleController::class, 'all']);
+Route::get('/ville/guess/{id}', [VilleController::class, 'guess']);