1
|
|
|
<?php |
2
|
|
|
/** |
3
|
|
|
* Vperyod\AcceptHandler |
4
|
|
|
* |
5
|
|
|
* PHP version 5 |
6
|
|
|
* |
7
|
|
|
* Copyright (C) 2016 Jake Johns |
8
|
|
|
* |
9
|
|
|
* This software may be modified and distributed under the terms |
10
|
|
|
* of the MIT license. See the LICENSE file for details. |
11
|
|
|
* |
12
|
|
|
* @category Responder |
13
|
|
|
* @package Vperyod\AcceptHandler |
14
|
|
|
* @author Jake Johns <[email protected]> |
15
|
|
|
* @copyright 2016 Jake Johns |
16
|
|
|
* @license http://jnj.mit-license.org/2016 MIT License |
17
|
|
|
* @link https://github.com/vperyod/vperyod.accept-handler |
18
|
|
|
*/ |
19
|
|
|
|
20
|
|
|
namespace Vperyod\AcceptHandler\Responder; |
21
|
|
|
|
22
|
|
|
use Vperyod\AcceptHandler\Exception; |
23
|
|
|
|
24
|
|
|
use Psr\Http\Message\ResponseInterface as Response; |
25
|
|
|
use Psr\Http\Message\ServerRequestInterface as Request; |
26
|
|
|
|
27
|
|
|
/** |
28
|
|
|
* ResponderLocator |
29
|
|
|
* |
30
|
|
|
* @category Responder |
31
|
|
|
* @package Vperyod\AcceptHandler |
32
|
|
|
* @author Jake Johns <[email protected]> |
33
|
|
|
* @license http://jnj.mit-license.org/ MIT License |
34
|
|
|
* @link https://github.com/vperyod/vperyod.accept-handler |
35
|
|
|
* |
36
|
|
|
* @abstract |
37
|
|
|
*/ |
38
|
|
|
abstract class AbstractResponderLocator |
39
|
|
|
{ |
40
|
|
|
/** |
41
|
|
|
* Responder factories |
42
|
|
|
* |
43
|
|
|
* @var array |
44
|
|
|
* |
45
|
|
|
* @access protected |
46
|
|
|
*/ |
47
|
|
|
protected $factories = []; |
48
|
|
|
|
49
|
|
|
/** |
50
|
|
|
* Create a responder locator |
51
|
|
|
* |
52
|
|
|
* @param array $factories factories to create responders |
53
|
|
|
* |
54
|
|
|
* @access public |
55
|
|
|
*/ |
56
|
5 |
|
public function __construct(array $factories) |
57
|
|
|
{ |
58
|
5 |
|
$this->factories = $factories; |
59
|
5 |
|
} |
60
|
|
|
|
61
|
|
|
/** |
62
|
|
|
* Negotiate and respond |
63
|
|
|
* |
64
|
|
|
* @param Request $request PSR7 Request |
65
|
|
|
* @param Response $response PSR7 Response |
66
|
|
|
* @param PayloadInterface $payload Domain Payload |
67
|
|
|
* |
68
|
|
|
* @return Response |
69
|
|
|
* |
70
|
|
|
* @access public |
71
|
|
|
*/ |
72
|
4 |
|
public function __invoke( |
73
|
|
|
Request $request, |
74
|
|
|
Response $response, |
75
|
|
|
$payload = null |
76
|
|
|
) { |
77
|
4 |
|
$this->request = $request; |
|
|
|
|
78
|
4 |
|
$this->response = $response; |
|
|
|
|
79
|
4 |
|
$this->payload = $payload; |
|
|
|
|
80
|
|
|
|
81
|
4 |
|
$type = $this->negotiate($request); |
82
|
|
|
|
83
|
4 |
|
if (! $type || ! $this->has($type)) { |
84
|
1 |
|
return $this->notAcceptable(); |
85
|
|
|
} |
86
|
|
|
|
87
|
3 |
|
$responder = $this->get($type); |
88
|
|
|
|
89
|
3 |
|
return $responder($request, $response, $payload); |
90
|
|
|
} |
91
|
|
|
|
92
|
|
|
/** |
93
|
|
|
* Accepts |
94
|
|
|
* |
95
|
|
|
* @return array |
96
|
|
|
* |
97
|
|
|
* @access public |
98
|
|
|
*/ |
99
|
2 |
|
public function accepts() |
100
|
|
|
{ |
101
|
2 |
|
return array_keys($this->factories); |
102
|
|
|
} |
103
|
|
|
|
104
|
|
|
/** |
105
|
|
|
* Unavailable |
106
|
|
|
* |
107
|
|
|
* @return Response |
108
|
|
|
* |
109
|
|
|
* @access protected |
110
|
|
|
*/ |
111
|
1 |
|
protected function notAcceptable() |
112
|
|
|
{ |
113
|
1 |
|
$this->response = $this->response->withStatus(406) |
114
|
1 |
|
->withHeader('Content-Type', 'application/json'); |
115
|
1 |
|
$this->response->getBody()->write(json_encode($this->accepts())); |
116
|
1 |
|
return $this->response; |
117
|
|
|
} |
118
|
|
|
|
119
|
|
|
/** |
120
|
|
|
* Set |
121
|
|
|
* |
122
|
|
|
* @param string $name name/type of responder |
123
|
|
|
* @param calable $callable factory |
124
|
|
|
* |
125
|
|
|
* @return $this |
126
|
|
|
* |
127
|
|
|
* @access public |
128
|
|
|
*/ |
129
|
1 |
|
public function set($name, callable $callable) |
130
|
|
|
{ |
131
|
1 |
|
$this->factories[$name] = $callable; |
132
|
1 |
|
return $this; |
133
|
|
|
} |
134
|
|
|
/** |
135
|
|
|
* Does a named helper exist? |
136
|
|
|
* |
137
|
|
|
* @param string $name The responder name. |
138
|
|
|
* |
139
|
|
|
* @return bool |
140
|
|
|
*/ |
141
|
5 |
|
public function has($name) |
142
|
|
|
{ |
143
|
5 |
|
return isset($this->factories[$name]); |
144
|
|
|
} |
145
|
|
|
|
146
|
|
|
/** |
147
|
|
|
* Get a responder |
148
|
|
|
* |
149
|
|
|
* @param string $name The responder to retrieve. |
150
|
|
|
* |
151
|
|
|
* @return object |
152
|
|
|
*/ |
153
|
4 |
|
public function get($name) |
154
|
|
|
{ |
155
|
4 |
|
if (! $this->has($name)) { |
156
|
1 |
|
throw new Exception\ResponderNotFoundException( |
157
|
|
|
'Responder not found for: ' . $name |
158
|
1 |
|
); |
159
|
|
|
} |
160
|
|
|
|
161
|
3 |
|
$factory = $this->factories[$name]; |
162
|
3 |
|
return $factory(); |
163
|
|
|
} |
164
|
|
|
|
165
|
|
|
/** |
166
|
|
|
* Negotiate |
167
|
|
|
* |
168
|
|
|
* @param Request $request PSR7 Request |
169
|
|
|
* |
170
|
|
|
* @return string | false |
171
|
|
|
* |
172
|
|
|
* @access protected |
173
|
|
|
*/ |
174
|
|
|
abstract protected function negotiate(Request $request); |
175
|
|
|
} |
176
|
|
|
|
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: