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sakura/app/PermissionHandler.php

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2016-12-08 21:13:55 +00:00
<?php
/**
* Holds the permission handler.
* @package Sakura
*/
namespace Sakura;
use Illuminate\Database\Query\Builder;
/**
* Inheritable permission handler.
* @package Sakura
* @author Julian van de Groep <me@flash.moe>
*/
class PermissionHandler
{
public const TABLE = '';
public $user = 0;
public $ranks = [];
public $additionalRequirements = [];
private $permCache = [];
private $validCache = [];
public function __construct(User $user)
{
$this->user = $user->id;
$this->ranks = array_keys($user->ranks);
}
public function __get(string $name): bool
{
return $this->check($name);
}
public function __isset(string $name): bool
{
return $this->valid($name);
}
public function valid(string $name): bool
{
if (!array_key_exists($name, $this->validCache)) {
$column = 'perm_' . camel_to_snake($name);
$this->validCache[$name] = DB::getSchemaBuilder()->hasColumn(static::TABLE, $column);
}
return $this->validCache[$name];
}
public function check(string $name): bool
{
if (!array_key_exists($name, $this->permCache)) {
$column = 'perm_' . camel_to_snake($name);
$add_reqs = $this->additionalRequirements;
$result = DB::table(static::TABLE)
->where(function (Builder $query) {
$query->whereIn('rank_id', $this->ranks)
->orWhere('user_id', $this->user);
})
->where(function (Builder $query) use ($add_reqs) {
if (isset($add_reqs['where'])) {
foreach ($add_reqs['where'] as $col => $val) {
$query->where($col, $val);
}
}
if (isset($add_reqs['where_in'])) {
foreach ($add_reqs['where_in'] as $col => $val) {
$query->whereIn($col, $val);
}
}
})
->whereNotNull($column)
->groupBy($column)
->min($column);
$this->permCache[$name] = intval($result) === 1;
}
return $this->permCache[$name];
}
}