PHP-Course/exam/api/Posts/Posts.php
2024-07-29 22:06:57 +02:00

136 lines
3.5 KiB
PHP

<?php
namespace Api\Posts;
use Exception;
use Khofmann\Api\Api;
use Khofmann\ApiError\ApiError;
use Khofmann\Input\Input;
use Khofmann\Models\Post\Post;
use Khofmann\Models\User\User;
use Khofmann\Request\Request;
use Khofmann\Response\Response;
/**
* Posts route handlers
*/
class Posts extends Api
{
/**
* Posts GET handler
*
* Lists posts. Optional parameters are `l` (limit of returned list) and `p` (page, i.e. offset).
*/
public function get()
{
// Fetch and constrain all parameters.
$page = max(0, intval(Input::get("p", 0)));
$limit = constrain(0, 30, intval(Input::get("l", 10)));
$authed = Request::token() !== null;
// Return list of posts.
Response::json(Post::list($page, $limit, $authed));
}
/**
* Posts POST handler
*
* Create a new posts. Required inputs are `content`. Optional parameter is `l` (limit of list for which the returned pages is calculated).
*
* Returns created post and resulting amount of pages for a given limit.
*
* @throws 400 Missing fields
*/
public function post(): void
{
// Fetch all required inputs.
// Throw 400 error if a required one is missing.
$content = Input::post("content");
// This one is optional
$limit = constrain(0, 30, intval(Input::get("l", 10)));
if (empty($content)) throw ApiError::missingField(["content"]);
// Get logged in user
$self = User::getByToken(Request::token());
// Try to create a new post for logged in user.
try {
Response::json(Post::create($self, $content, $limit));
} catch (Exception $err) {
switch ($err->getMessage()) {
default:
throw $err;
}
}
}
/**
* Posts PATCH handler
*
* Update a posts.
*
* Returns updated post.
*
* @param mixed $id ID of post to update
*
* @throws 401 Not authorized (trying to edit a different users post if not admin)
* @throws 404 Post not found
* @throws 500 Failed to update user
*/
public function patch($id): void
{
// Fetch all inputs.
$content = Input::patch("content");
// Fetch authed user.
$self = User::getByToken(Request::token());
try {
// Try fetch the post in question, 404 if not found.
$post = Post::getByID($id);
// Throw 400 if we aren't admin but trying to edit another users post.
if (!$self->getIsAdmin() && $post->getUser()->getID() !== $self->getID()) throw ApiError::notAllowed("Not allowed");
// Try update.
Response::json($post->update($content));
} catch (Exception $err) {
switch ($err->getMessage()) {
case "NotFound":
throw ApiError::notFound("post");
default:
// Due to how the failed field is handled, it's ApiError is inside the models update
throw $err;
}
}
}
/**
* Posts DELETE handler
*
* Delete a post. Optional parameter is `l` (limit of list for which the returned pages is calculated).
*
* Returns deleted post and resulting amount of pages for a given limit.
*
* @param mixed $id ID of posts to delete
*
* @throws 404 Post not found
*/
public function delete($id): void
{
// Fetch and constrain all parameters.
$limit = constrain(0, 30, intval(Input::get("l", 10)));
// Try delete, 404 if post was not found.
try {
Response::json(Post::getByID($id)->delete($limit));
} catch (Exception $err) {
switch ($err->getMessage()) {
case "NotFound":
throw ApiError::notFound("post");
default:
throw $err;
}
}
}
}