feat: add GameGridGenerator service

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/Service/GameGridGenerator.php

@@ -0,0 +1,100 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Entity\Actor;
+use App\Entity\Game;
+use App\Entity\GameRow;
+use App\Entity\User;
+use App\Repository\ActorRepository;
+use Doctrine\ORM\EntityManagerInterface;
+
+class GameGridGenerator
+{
+    public function __construct(
+        private readonly ActorRepository $actorRepository,
+        private readonly EntityManagerInterface $em,
+    ) {}
+
+    public function generate(?User $user = null): Game
+    {
+        $mainActor = $this->actorRepository->findOneRandom(4);
+
+        $game = new Game();
+        $game->setMainActor($mainActor);
+        $game->setUser($user);
+
+        $usedActors = [$mainActor->getId()];
+        $rowOrder = 0;
+
+        foreach (str_split(strtolower($mainActor->getName())) as $char) {
+            if (!preg_match('/[a-z]/', $char)) {
+                continue;
+            }
+
+            $tryFindActor = 0;
+            do {
+                $actor = $this->actorRepository->findOneRandom(4, $char);
+                ++$tryFindActor;
+            } while (
+                in_array($actor->getId(), $usedActors)
+                || $tryFindActor < 5
+            );
+
+            $usedActors[] = $actor->getId();
+
+            $row = new GameRow();
+            $row->setActor($actor);
+            $row->setPosition(strpos(strtolower($actor->getName()), $char));
+            $row->setRowOrder($rowOrder);
+
+            $game->addRow($row);
+            ++$rowOrder;
+        }
+
+        $this->em->persist($game);
+        $this->em->flush();
+
+        return $game;
+    }
+
+    /**
+     * Compute display data (grid, width, middle) from a Game entity for the React component.
+     *
+     * @return array{grid: list<array{actorName: string, actorId: int, pos: int}>, width: int, middle: int}
+     */
+    public function computeGridData(Game $game): array
+    {
+        $leftSize = 0;
+        $rightSize = 0;
+        $grid = [];
+
+        foreach ($game->getRows() as $row) {
+            $actor = $row->getActor();
+            $pos = $row->getPosition();
+
+            if ($leftSize < $pos) {
+                $leftSize = $pos;
+            }
+
+            $rightSizeActor = strlen($actor->getName()) - $pos - 1;
+            if ($rightSize < $rightSizeActor) {
+                $rightSize = $rightSizeActor;
+            }
+
+            $grid[] = [
+                'actorName' => $actor->getName(),
+                'actorId' => $actor->getId(),
+                'pos' => $pos,
+            ];
+        }
+
+        return [
+            'grid' => $grid,
+            'width' => $rightSize + $leftSize + 1,
+            'middle' => $leftSize,
+        ];
+    }
+}