taktik - laravel

app/Services/Post/PostService.php

@@ -0,0 +1,106 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Services\Post;
+
+use App\Models\Post;
+use App\Models\Tag;
+use App\Services\PaginableResource;
+use App\Services\QueryRequestModifiers\Post\PostFilter;
+use App\Services\QueryRequestModifiers\Post\PostFilterDTO;
+use App\Services\QueryRequestModifiers\Post\PostOrder;
+use App\Services\QueryRequestModifiers\Post\PostOrderDTO;
+use Illuminate\Support\Facades\DB;
+
+class PostService implements PostServiceInterface
+{
+    public function __construct(
+        protected readonly PostFilter $postFilter,
+        protected readonly PostOrder $postOrder,
+        protected readonly int $paginate = 10,
+    ) {
+    }
+
+    public function fetchPosts(int $page, ?PostFilterDTO $filters, ?PostOrderDTO $orderDef): PaginableResource
+    {
+        $posts = $this->postOrder->apply(
+            $this->postFilter->apply(Post::with(['category', 'tags', 'comments']), $filters),
+            $orderDef
+        )->paginate($this->paginate, page: $page);
+        return PaginableResource::createFromLengthAwarePaginator($posts);
+    }
+
+    public function findPost(int $id): ?Post
+    {
+        return Post::with(['category', 'tags', 'comments'])->find($id);
+    }
+
+    public function storePost(array $data): Post
+    {
+        DB::beginTransaction();
+
+        $post = Post::create($data);
+
+        if (isset($data['tags'])) {
+            $tags = [];
+
+            foreach ($data['tags'] as $tag) {
+                $tag = Tag::firstOrCreate(['name' => $tag]);
+                $tags[] = $tag;
+            }
+
+            $post->tags()->sync($tags);
+        }
+
+        $post = $this->findPost($post->id);
+
+        if ($post === null) {
+            throw new \InvalidArgumentException('This should never happen - post is null');
+        }
+
+        DB::commit();
+
+        return $post;
+    }
+
+    public function updatePost(array $data, int $id): ?Post
+    {
+        DB::beginTransaction();
+
+        $post = Post::find($id);
+
+        if ($post === null) {
+            return null;
+        }
+
+        if (isset($data['tags'])) {
+            $tags = [];
+
+            foreach ($data['tags'] as $tag) {
+                $tag = Tag::firstOrCreate(['name' => $tag]);
+                $tags[] = $tag;
+            }
+
+            $post->tags()->sync($tags);
+        }
+
+        $post->update($data);
+
+        DB::commit();
+
+        return $this->findPost($post->id);
+    }
+
+    public function deletePost(int $id): bool
+    {
+        $post = Post::find($id);
+
+        if ($post === null) {
+            return false;
+        }
+
+        $post->delete();
+        return true;
+    }
+}