/
Discussion.php
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/
Discussion.php
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<?php
/*
* This file is part of Flarum.
*
* For detailed copyright and license information, please view the
* LICENSE file that was distributed with this source code.
*/
namespace Flarum\Forum\Content;
use Flarum\Api\Client;
use Flarum\Frontend\Document;
use Flarum\Http\Exception\RouteNotFoundException;
use Flarum\Http\UrlGenerator;
use Illuminate\Contracts\View\Factory;
use Illuminate\Support\Arr;
use Psr\Http\Message\ServerRequestInterface as Request;
class Discussion
{
/**
* @var Client
*/
protected $api;
/**
* @var UrlGenerator
*/
protected $url;
/**
* @var Factory
*/
protected $view;
/**
* @param Client $api
* @param UrlGenerator $url
* @param Factory $view
*/
public function __construct(Client $api, UrlGenerator $url, Factory $view)
{
$this->api = $api;
$this->url = $url;
$this->view = $view;
}
public function __invoke(Document $document, Request $request)
{
$queryParams = $request->getQueryParams();
$id = Arr::get($queryParams, 'id');
$near = intval(Arr::get($queryParams, 'near'));
$page = max(1, intval(Arr::get($queryParams, 'page')), 1 + intdiv($near, 20));
$params = [
'id' => $id,
'page' => [
'near' => $near,
'offset' => ($page - 1) * 20,
'limit' => 20
]
];
$apiDocument = $this->getApiDocument($request, $id, $params);
$getResource = function ($link) use ($apiDocument) {
return Arr::first($apiDocument->included, function ($value) use ($link) {
return $value->type === $link->type && $value->id === $link->id;
});
};
$url = function ($newQueryParams) use ($queryParams, $apiDocument) {
$newQueryParams = array_merge($queryParams, $newQueryParams);
unset($newQueryParams['id']);
unset($newQueryParams['near']);
if (Arr::get($newQueryParams, 'page') == 1) {
unset($newQueryParams['page']);
}
$queryString = http_build_query($newQueryParams);
return $this->url->to('forum')->route('discussion', ['id' => $apiDocument->data->attributes->slug]).
($queryString ? '?'.$queryString : '');
};
$posts = [];
foreach ($apiDocument->included as $resource) {
if ($resource->type === 'posts' && isset($resource->relationships->discussion) && isset($resource->attributes->contentHtml)) {
$posts[] = $resource;
}
}
$hasPrevPage = $page > 1;
$hasNextPage = $page < 1 + intval($apiDocument->data->attributes->commentCount / 20);
$document->title = $apiDocument->data->attributes->title;
$document->content = $this->view->make('flarum.forum::frontend.content.discussion', compact('apiDocument', 'page', 'hasPrevPage', 'hasNextPage', 'getResource', 'posts', 'url'));
$document->payload['apiDocument'] = $apiDocument;
$document->canonicalUrl = $url([]);
$document->page = $page;
$document->hasNextPage = $hasNextPage;
return $document;
}
/**
* Get the result of an API request to show a discussion.
*
* @throws RouteNotFoundException
*/
protected function getApiDocument(Request $request, string $id, array $params)
{
$params['bySlug'] = true;
$response = $this->api
->withParentRequest($request)
->withQueryParams($params)
->get("/discussions/$id");
$statusCode = $response->getStatusCode();
if ($statusCode === 404) {
throw new RouteNotFoundException;
}
return json_decode($response->getBody());
}
}