1: <?php
 2: 
 3: namespace ProgrammingAreHard\Arbiter\Domain;
 4: 
 5: use ProgrammingAreHard\Arbiter\Model\PermissionsInterface;
 6: 
 7: class Permissions implements PermissionsInterface
 8: {
 9:     /**
10:      * Permissions.
11:      *
12:      * @var string[]
13:      */
14:     protected $permissions = array();
15: 
16:     /**
17:      * Constructor.
18:      *
19:      * @param string[] $permissions
20:      */
21:     public function __construct(array $permissions = array())
22:     {
23:         foreach ($permissions as $permission) {
24:             $this->add($permission);
25:         }
26:     }
27: 
28:     /**
29:      * {@inheritdoc}
30:      */
31:     public function add($permission)
32:     {
33:         if (!$this->contains($permission)) {
34:             $this->permissions[] = $permission;
35:         }
36: 
37:         return $this;
38:     }
39: 
40:     /**
41:      * {@inheritdoc}
42:      */
43:     public function remove($permission)
44:     {
45:         if ($this->contains($permission)) {
46:             if ($key = array_search($permission, $this->permissions)) {
47:                 unset($this->permissions[$key]);
48:             }
49:         }
50: 
51:         return $this;
52:     }
53: 
54:     /**
55:      * {@inheritdoc}
56:      */
57:     public function contains($permission)
58:     {
59:         return in_array($permission, $this->permissions);
60:     }
61: 
62:     /**
63:      * {@inheritdoc}
64:      */
65:     public function toArray()
66:     {
67:         return $this->permissions;
68:     }
69: 
70:     /**
71:      * {@inheritdoc}
72:      */
73:     public function getIterator()
74:     {
75:         return new \ArrayIterator($this->permissions);
76:     }
77: 
78:     /**
79:      * @return int
80:      */
81:     public function count()
82:     {
83:         return count($this->permissions);
84:     }
85: 
86:     /**
87:      * @return string
88:      */
89:     public function __toString()
90:     {
91:         return implode(',', $this->permissions);
92:     }
93: }