BookStack/app/Actions/CommentRepo.php

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<?php namespace BookStack\Actions;
use BookStack\Entities\Entity;
use League\CommonMark\CommonMarkConverter;
/**
* Class CommentRepo
*/
class CommentRepo
{
/**
* @var Comment $comment
*/
protected $comment;
public function __construct(Comment $comment)
{
$this->comment = $comment;
}
/**
* Get a comment by ID.
*/
public function getById(int $id): Comment
{
return $this->comment->newQuery()->findOrFail($id);
}
/**
* Create a new comment on an entity.
*/
public function create(Entity $entity, string $text, ?int $parent_id): Comment
{
$userId = user()->id;
$comment = $this->comment->newInstance();
$comment->text = $text;
$comment->html = $this->commentToHtml($text);
$comment->created_by = $userId;
$comment->updated_by = $userId;
$comment->local_id = $this->getNextLocalId($entity);
$comment->parent_id = $parent_id;
$entity->comments()->save($comment);
return $comment;
}
/**
* Update an existing comment.
*/
public function update(Comment $comment, string $text): Comment
{
$comment->updated_by = user()->id;
$comment->text = $text;
$comment->html = $this->commentToHtml($text);
$comment->save();
return $comment;
}
/**
* Delete a comment from the system.
*/
public function delete(Comment $comment)
{
$comment->delete();
}
/**
* Convert the given comment markdown text to HTML.
*/
public function commentToHtml(string $commentText): string
{
$converter = new CommonMarkConverter([
'html_input' => 'strip',
'max_nesting_level' => 10,
'allow_unsafe_links' => false,
]);
return $converter->convertToHtml($commentText);
}
/**
* Get the next local ID relative to the linked entity.
*/
protected function getNextLocalId(Entity $entity): int
{
$comments = $entity->comments(false)->orderBy('local_id', 'desc')->first();
return ($comments->local_id ?? 0) + 1;
}
}