implement post and comment controllers
Wires PostController (recent, show, create, delete, listByUser) and CommentController (listForPost, create, delete) to the existing use cases. Posts and comments expose author display names alongside user IDs. CommentRepository binding added to RepositoryServiceProvider.
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124
backend/app/Controllers/CommentController.php
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124
backend/app/Controllers/CommentController.php
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@ -0,0 +1,124 @@
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<?php
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namespace App\Controllers;
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use App\Comment\Comment;
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use App\Comment\UseCases\CreateComment\CreateComment;
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use App\Comment\UseCases\CreateComment\CreateCommentRequest;
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use App\Comment\UseCases\DeleteComment\DeleteComment;
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use App\Comment\UseCases\DeleteComment\DeleteCommentRequest;
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use App\Comment\UseCases\ListCommentsForPost\ListCommentsForPost;
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use App\Comment\UseCases\ListCommentsForPost\ListCommentsForPostRequest;
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use App\Exceptions\BadRequestException;
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use App\Exceptions\ForbiddenException;
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use App\User\User;
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use App\User\UserRepository;
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use DomainException;
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use Illuminate\Http\JsonResponse;
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use Illuminate\Http\Request;
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class CommentController
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{
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public function __construct(
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private CreateComment $createComment,
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private DeleteComment $deleteComment,
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private ListCommentsForPost $listCommentsForPost,
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private UserRepository $userRepo,
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) {}
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public function listForPost(Request $request, int $postId): JsonResponse
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{
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try {
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$comments = $this->listCommentsForPost->execute(
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new ListCommentsForPostRequest(postId: $postId),
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);
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} catch (BadRequestException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 400,
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);
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}
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return new JsonResponse([
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'comments' => array_map(
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function (Comment $comment) {
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return $this->serialize($comment);
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},
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$comments,
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),
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], 200);
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}
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public function create(Request $request, int $postId): JsonResponse
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{
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/** @var User $user */
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$user = $request->attributes->get('user');
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try {
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$comment = $this->createComment->execute(new CreateCommentRequest(
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postId: $postId,
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userId: $user->getId(),
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body: $request->input('body'),
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));
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} catch (BadRequestException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 400,
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);
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} catch (DomainException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 404,
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);
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}
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return new JsonResponse([
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'comment' => $this->serialize($comment),
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], 201);
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}
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public function delete(Request $request, int $id): JsonResponse
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{
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/** @var User $user */
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$user = $request->attributes->get('user');
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try {
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$this->deleteComment->execute(new DeleteCommentRequest(
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commentId: $id,
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requesterId: $user->getId(),
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requesterIsAdmin: $user->isAdmin(),
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));
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} catch (BadRequestException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 400,
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);
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} catch (ForbiddenException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 403,
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);
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}
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return new JsonResponse(null, 204);
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}
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/**
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* @return array{
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* id: int,
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* postId: int,
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* userId: int,
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* authorDisplayName: string,
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* body: string,
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* createdAt: string
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* }
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*/
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private function serialize(Comment $comment): array
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{
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$author = $this->userRepo->find($comment->getUserId());
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return [
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'id' => $comment->getId(),
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'postId' => $comment->getPostId(),
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'userId' => $comment->getUserId(),
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'authorDisplayName' => $author === null
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? ''
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: $author->getDisplayName(),
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'body' => $comment->getBody(),
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'createdAt' => $comment->getCreatedAt()->format(DATE_ATOM),
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];
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}
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}
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181
backend/app/Controllers/PostController.php
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181
backend/app/Controllers/PostController.php
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<?php
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namespace App\Controllers;
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use App\Exceptions\BadRequestException;
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use App\Exceptions\ForbiddenException;
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use App\Post\Post;
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use App\Post\UseCases\CreatePost\CreatePost;
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use App\Post\UseCases\CreatePost\CreatePostRequest;
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use App\Post\UseCases\DeletePost\DeletePost;
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use App\Post\UseCases\DeletePost\DeletePostRequest;
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use App\Post\UseCases\GetPost\GetPost;
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use App\Post\UseCases\ListRecentPosts\ListRecentPosts;
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use App\Post\UseCases\ListRecentPosts\ListRecentPostsRequest;
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use App\Post\UseCases\ListUserPosts\ListUserPosts;
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use App\Post\UseCases\ListUserPosts\ListUserPostsRequest;
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use App\User\User;
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use App\User\UserRepository;
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use DomainException;
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use Illuminate\Http\JsonResponse;
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use Illuminate\Http\Request;
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class PostController
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{
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private const RECENT_LIMIT = 20;
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public function __construct(
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private CreatePost $createPost,
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private DeletePost $deletePost,
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private GetPost $getPost,
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private ListRecentPosts $listRecentPosts,
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private ListUserPosts $listUserPosts,
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private UserRepository $userRepo,
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) {}
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public function recent(Request $request): JsonResponse
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{
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try {
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$posts = $this->listRecentPosts->execute(
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new ListRecentPostsRequest(limit: self::RECENT_LIMIT),
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);
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} catch (BadRequestException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 400,
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);
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}
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return new JsonResponse([
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'posts' => array_map(
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function (Post $post) {
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return $this->serialize($post);
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},
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$posts,
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),
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], 200);
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}
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public function show(Request $request, int $id): JsonResponse
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{
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try {
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$post = $this->getPost->execute($id);
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} catch (BadRequestException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 400,
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);
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}
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if ($post === null) {
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return new JsonResponse(['error' => 'post not found'], 404);
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}
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return new JsonResponse([
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'post' => $this->serialize($post),
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], 200);
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}
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public function listByUser(
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Request $request,
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string $displayName,
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): JsonResponse {
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$user = $this->userRepo->findByDisplayName($displayName);
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if ($user === null) {
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return new JsonResponse(['error' => 'user not found'], 404);
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}
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try {
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$posts = $this->listUserPosts->execute(
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new ListUserPostsRequest(userId: $user->getId()),
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);
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} catch (BadRequestException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 400,
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);
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}
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return new JsonResponse([
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'user' => [
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'id' => $user->getId(),
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'displayName' => $user->getDisplayName(),
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],
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'posts' => array_map(
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function (Post $post) {
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return $this->serialize($post);
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},
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$posts,
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),
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], 200);
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}
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public function create(Request $request): JsonResponse
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{
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/** @var User $user */
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$user = $request->attributes->get('user');
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try {
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$post = $this->createPost->execute(new CreatePostRequest(
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userId: $user->getId(),
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title: $request->input('title'),
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body: $request->input('body'),
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));
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} catch (BadRequestException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 400,
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);
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}
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return new JsonResponse([
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'post' => $this->serialize($post),
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], 201);
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}
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public function delete(Request $request, int $id): JsonResponse
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{
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/** @var User $user */
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$user = $request->attributes->get('user');
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try {
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$this->deletePost->execute(new DeletePostRequest(
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postId: $id,
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requesterId: $user->getId(),
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requesterIsAdmin: $user->isAdmin(),
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));
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} catch (BadRequestException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 400,
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);
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} catch (ForbiddenException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 403,
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);
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} catch (DomainException $exception) {
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return new JsonResponse(
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['error' => $exception->getMessage()], 409,
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);
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}
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return new JsonResponse(null, 204);
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}
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/**
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* @return array{
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* id: int,
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* userId: int,
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* authorDisplayName: string,
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* title: string,
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* body: string,
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* createdAt: string
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* }
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*/
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private function serialize(Post $post): array
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{
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$author = $this->userRepo->find($post->getUserId());
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return [
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'id' => $post->getId(),
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'userId' => $post->getUserId(),
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'authorDisplayName' => $author === null
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? ''
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: $author->getDisplayName(),
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'title' => $post->getTitle(),
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'body' => $post->getBody(),
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'createdAt' => $post->getCreatedAt()->format(DATE_ATOM),
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];
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}
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}
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@ -4,6 +4,8 @@ namespace App\Providers;
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use App\Auth\EloquentSessionRepository;
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use App\Auth\SessionRepository;
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use App\Comment\CommentRepository;
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use App\Comment\EloquentCommentRepository;
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use App\Email\EmailConfirmationToken\EloquentEmailConfirmationTokenRepository;
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use App\Email\EmailConfirmationToken\EmailConfirmationTokenRepository;
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use App\Post\EloquentPostRepository;
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@ -32,5 +34,9 @@ class RepositoryServiceProvider extends ServiceProvider
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PostRepository::class,
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EloquentPostRepository::class,
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);
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$this->app->bind(
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CommentRepository::class,
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EloquentCommentRepository::class,
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);
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}
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}
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<?php
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use App\Controllers\AuthController;
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use App\Controllers\CommentController;
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use App\Controllers\PostController;
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use App\Http\Middleware\AuthMiddleware;
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use Illuminate\Support\Facades\Route;
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@ -15,3 +17,32 @@ Route::post('/logout', [AuthController::class, 'logout'])
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->middleware(AuthMiddleware::class);
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Route::get('/me', [AuthController::class, 'me'])
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->middleware(AuthMiddleware::class);
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Route::get('/posts', [PostController::class, 'recent']);
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Route::get('/posts/{id}', [PostController::class, 'show'])
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->whereNumber('id');
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Route::post('/posts', [PostController::class, 'create'])
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->middleware(AuthMiddleware::class);
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Route::delete('/posts/{id}', [PostController::class, 'delete'])
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->whereNumber('id')
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->middleware(AuthMiddleware::class);
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Route::get(
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'/users/{displayName}/posts',
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[PostController::class, 'listByUser'],
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);
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Route::get(
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'/posts/{postId}/comments',
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[CommentController::class, 'listForPost'],
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)->whereNumber('postId');
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Route::post(
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'/posts/{postId}/comments',
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[CommentController::class, 'create'],
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)->whereNumber('postId')
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->middleware(AuthMiddleware::class);
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Route::delete(
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'/comments/{id}',
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[CommentController::class, 'delete'],
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)->whereNumber('id')
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->middleware(AuthMiddleware::class);
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