BookStack/app/Actions/ViewService.php

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PHP
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<?php namespace BookStack\Actions;
use BookStack\Auth\Permissions\PermissionService;
use BookStack\Entities\Models\Book;
use BookStack\Entities\Models\Entity;
use BookStack\Entities\EntityProvider;
use DB;
use Illuminate\Support\Collection;
class ViewService
{
protected $view;
protected $permissionService;
protected $entityProvider;
/**
* ViewService constructor.
* @param View $view
* @param PermissionService $permissionService
* @param EntityProvider $entityProvider
*/
public function __construct(View $view, PermissionService $permissionService, EntityProvider $entityProvider)
{
$this->view = $view;
$this->permissionService = $permissionService;
$this->entityProvider = $entityProvider;
}
/**
* Add a view to the given entity.
* @param \BookStack\Entities\Models\Entity $entity
* @return int
*/
public function add(Entity $entity)
{
$user = user();
if ($user === null || $user->isDefault()) {
return 0;
}
$view = $entity->views()->where('user_id', '=', $user->id)->first();
// Add view if model exists
if ($view) {
$view->increment('views');
return $view->views;
}
// Otherwise create new view count
$entity->views()->save($this->view->newInstance([
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'user_id' => $user->id,
'views' => 1
]));
return 1;
}
/**
* Get the entities with the most views.
* @param int $count
* @param int $page
* @param string|array $filterModels
* @param string $action - used for permission checking
* @return Collection
*/
public function getPopular(int $count = 10, int $page = 0, array $filterModels = null, string $action = 'view')
{
$skipCount = $count * $page;
$query = $this->permissionService
->filterRestrictedEntityRelations($this->view, 'views', 'viewable_id', 'viewable_type', $action)
->select('*', 'viewable_id', 'viewable_type', DB::raw('SUM(views) as view_count'))
->groupBy('viewable_id', 'viewable_type')
->orderBy('view_count', 'desc');
if ($filterModels) {
$query->whereIn('viewable_type', $this->entityProvider->getMorphClasses($filterModels));
}
return $query->with('viewable')
->skip($skipCount)
->take($count)
->get()
->pluck('viewable')
->filter();
}
/**
* Get all recently viewed entities for the current user.
*/
public function getUserRecentlyViewed(int $count = 10, int $page = 1)
{
$user = user();
if ($user === null || $user->isDefault()) {
return collect();
}
$all = collect();
/** @var Entity $instance */
foreach ($this->entityProvider->all() as $name => $instance) {
$items = $instance::visible()->withLastView()
->orderBy('last_viewed_at', 'desc')
->skip($count * ($page - 1))
->take($count)
->get();
$all = $all->concat($items);
}
return $all->sortByDesc('last_viewed_at')->slice(0, $count);
}
/**
* Reset all view counts by deleting all views.
*/
public function resetAll()
{
$this->view->truncate();
}
}