| 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; | 
                            
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                | 78 | 4 |  |         $this->response = $response; | 
                            
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                | 79 | 4 |  |         $this->payload = $payload; | 
                            
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                | 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: