Complex classes like App often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use App, and based on these observations, apply Extract Interface, too.
1 | <?php |
||
19 | class App |
||
20 | { |
||
21 | /** |
||
22 | * Reference to instantiated controller object. |
||
23 | * |
||
24 | * @var object |
||
25 | */ |
||
26 | protected static $instance = false; |
||
27 | |||
28 | /** |
||
29 | * Available configuration files |
||
30 | * |
||
31 | * @var object |
||
32 | */ |
||
33 | private $files; |
||
34 | |||
35 | /** |
||
36 | * System configuration |
||
37 | * |
||
38 | * @var object |
||
39 | */ |
||
40 | public $configuration; |
||
41 | |||
42 | /** |
||
43 | * System service management |
||
44 | * |
||
45 | * @var object |
||
46 | */ |
||
47 | private $services; |
||
48 | |||
49 | /** |
||
50 | * Events |
||
51 | */ |
||
52 | private static $events; |
||
53 | |||
54 | /** |
||
55 | * Return value from application |
||
56 | * |
||
57 | * @var string |
||
58 | */ |
||
59 | private $output = false; |
||
60 | |||
61 | /** |
||
62 | * Namespaced controller path |
||
63 | * |
||
64 | * @var string |
||
65 | */ |
||
66 | private $class; |
||
67 | |||
68 | /** |
||
69 | * Instantiated class object |
||
70 | * |
||
71 | * @var string |
||
72 | */ |
||
73 | private $instantiatedClass; |
||
74 | |||
75 | /** |
||
76 | * Module being accessed |
||
77 | * |
||
78 | * @var string |
||
79 | */ |
||
80 | private $module; |
||
81 | |||
82 | /** |
||
83 | * Controller being accessed |
||
84 | * |
||
85 | * @var string |
||
86 | */ |
||
87 | private $controller; |
||
88 | |||
89 | /** |
||
90 | * Method being accessed |
||
91 | * |
||
92 | * @var string |
||
93 | */ |
||
94 | private $method; |
||
95 | |||
96 | /** |
||
97 | * Params being passed |
||
98 | * |
||
99 | * @var array |
||
100 | */ |
||
101 | private $params; |
||
102 | |||
103 | /** |
||
104 | * Instantiated router class |
||
105 | * |
||
106 | * @var object |
||
107 | */ |
||
108 | private $router; |
||
109 | |||
110 | /** |
||
111 | * Instantiated request class |
||
112 | * |
||
113 | * @var object |
||
114 | */ |
||
115 | private $request; |
||
116 | |||
117 | /** |
||
118 | * Application bootstrap process |
||
119 | * |
||
120 | * The application registers the configuration in the app/config/core.php |
||
121 | * and then processes, and makes available the configured resources |
||
122 | */ |
||
123 | 28 | public function __construct() |
|
124 | { |
||
125 | 28 | self::$instance = $this; |
|
126 | //@TODO: unset unnececessary vars/profile/unit testing..? how? |
||
127 | //@TODO: better try/catch usage |
||
128 | //@TODO: setup custom routing based on regex |
||
129 | // (can't we get away without using regex tho?)!!!!!!! routesssssss!!!!!!!! |
||
130 | 28 | $files = (object)glob(APP_PATH . DIRECTORY_SEPARATOR . 'Config' . DIRECTORY_SEPARATOR . '*.php'); |
|
131 | 28 | $oFiles = []; |
|
132 | |||
133 | 28 | foreach ($files as $index => $filename) { |
|
134 | 28 | $pieces = explode('/', $filename); |
|
135 | 28 | $file = $pieces[count($pieces) - 1]; |
|
136 | 28 | $fileProperties = explode('.', $file); |
|
137 | 28 | $currentFile = $fileProperties[0]; |
|
138 | 28 | $oFiles[$currentFile] = $filename; |
|
139 | } |
||
140 | |||
141 | 28 | $this->files = $oFiles; |
|
|
|||
142 | 28 | $this->configuration = new \stdClass(); |
|
143 | |||
144 | 28 | $this->prepare(); |
|
145 | 18 | } |
|
146 | |||
147 | /** |
||
148 | * Calls the proper shell for app execution |
||
149 | * |
||
150 | * @access private |
||
151 | */ |
||
152 | public function initialize() |
||
157 | |||
158 | /** |
||
159 | * App preparation cycle |
||
160 | */ |
||
161 | 28 | private function prepare() |
|
181 | |||
182 | 18 | private function prepareServices() |
|
183 | { |
||
184 | 18 | if (isset($this->files['services'])) { |
|
185 | $services = include $this->files['services']; |
||
186 | if ($services !== false) { |
||
187 | $this->services = (object)$services; |
||
188 | } |
||
189 | } |
||
190 | |||
191 | 18 | if(is_null($this->services)) { |
|
192 | 18 | $this->services = (object)[]; |
|
193 | } |
||
194 | 18 | } |
|
195 | |||
196 | 3 | public function getService($service, $new = false, $options = []) |
|
197 | { |
||
198 | 3 | if ($this->services === null) { |
|
199 | $this->prepareServices(); |
||
200 | } |
||
201 | |||
202 | 3 | if ($new === false) { |
|
203 | 3 | return $this->services->$service; |
|
204 | } elseif ($new === true || empty($this->services->$service)) { |
||
205 | $this->services->$service = call_user_func_array($this->services->$service, $options); |
||
206 | return $this->services->$service; |
||
207 | } |
||
208 | } |
||
209 | |||
210 | 18 | public function setService($service, $class) |
|
211 | { |
||
212 | 18 | if ($this->services === null) { |
|
213 | 18 | $this->prepareServices(); |
|
214 | } |
||
215 | |||
216 | 18 | $this->services->$service = $class; |
|
217 | 18 | } |
|
218 | |||
219 | /** |
||
220 | * @param mixed string with reference to config |
||
221 | * @return mixed bool or config values |
||
222 | */ |
||
223 | 28 | public function getConfiguration($config = null) |
|
224 | { |
||
225 | 28 | if ($config !== null) { |
|
226 | 28 | if (! empty($this->configuration->$config)) { |
|
227 | 15 | return $this->configuration->$config; |
|
228 | 28 | } elseif (! empty($this->files{$config})) { |
|
229 | 28 | $vars = include $this->files{$config}; |
|
230 | |||
231 | 28 | if ($vars === false) { |
|
232 | $this->configuration->{$config} = false; |
||
233 | } else { |
||
234 | //turn array into object the dirty way? |
||
235 | 28 | $this->configuration->{$config} = json_decode(json_encode($vars)); |
|
236 | } |
||
237 | |||
238 | 28 | return $this->configuration->$config; |
|
239 | } |
||
240 | |||
241 | 28 | return false; |
|
242 | } |
||
243 | |||
244 | 18 | return $this->configuration; |
|
245 | } |
||
246 | |||
247 | /** |
||
248 | * @param $config mixed null|string |
||
249 | * @param null|object|array optional array of configuration data |
||
250 | * |
||
251 | * @return bool |
||
252 | * @throws Exception\StateException |
||
253 | */ |
||
254 | 18 | public function setConfiguration($config = null, $configObject = null) |
|
263 | |||
264 | /** |
||
265 | * Registers the session object |
||
266 | * |
||
267 | * @access private |
||
268 | */ |
||
269 | 28 | private function registerSession() |
|
270 | { |
||
271 | 28 | $session = $this->getConfiguration('session'); |
|
272 | |||
273 | 28 | if ($session !== false) { |
|
274 | App::callEvent('preSession'); |
||
275 | new SessionHandler( |
||
276 | $session->interface, |
||
277 | $session->securityCode, |
||
278 | $session->expiration, |
||
279 | $session->domain, |
||
280 | $session->lockToUserAgent, |
||
281 | $session->lockToIP, |
||
282 | $session->gcProbability, |
||
283 | $session->gcDivisor, |
||
284 | $session->tableName |
||
285 | ); |
||
286 | App::callEvent('postSession'); |
||
287 | } |
||
288 | |||
289 | 28 | return; |
|
290 | } |
||
291 | |||
292 | /** |
||
293 | * Verifies the provided application request is a valid request |
||
294 | * |
||
295 | * @access private |
||
296 | */ |
||
297 | private function processRequest() |
||
311 | |||
312 | /** |
||
313 | * Processes the application request |
||
314 | * |
||
315 | * @access private |
||
316 | */ |
||
317 | private function start() |
||
318 | { |
||
319 | if (!$this->processRequest()) { |
||
320 | return false; |
||
321 | } |
||
322 | |||
323 | App::callEvent('preController'); |
||
324 | $this->instantiatedClass = new $this->class(); |
||
325 | App::callEvent('postController'); |
||
326 | |||
327 | $this->output = call_user_func_array( |
||
328 | array(&$this->instantiatedClass, $this->method), |
||
329 | $this->params |
||
330 | ); |
||
331 | } |
||
332 | /** |
||
333 | * Attach (or remove) multiple callbacks to an event and trigger those callbacks when that event is called. |
||
334 | * |
||
335 | * @param string $event name |
||
336 | * @param mixed $value the optional value to pass to each callback |
||
337 | * @param mixed $callback the method or function to call - FALSE to remove all callbacks for event |
||
338 | */ |
||
339 | |||
340 | public static function addEvent($event, $callback = false) |
||
341 | { |
||
342 | // Adding or removing a callback? |
||
343 | if ($callback !== false) { |
||
344 | self::$events[$event][] = $callback; |
||
345 | } else { |
||
346 | unset(self::$events[$event]); |
||
347 | } |
||
348 | } |
||
349 | |||
350 | 28 | public function callEvent($event, $method = false, $arguments = []) |
|
351 | { |
||
352 | 28 | if (isset(self::$events[$event])) { |
|
353 | foreach (self::$events[$event] as $e) { |
||
354 | if ($method !== false) { // class w/ method specified |
||
355 | $object = new $e(); |
||
356 | $value = call_user_func_array( |
||
357 | [&$object, $method], |
||
358 | $arguments |
||
359 | ); |
||
360 | } else { |
||
361 | if (class_exists($e)) { |
||
362 | $value = new $e($arguments); // class w/o method specified |
||
363 | } else { |
||
364 | $value = call_user_func($e, $arguments); // function yuk |
||
365 | } |
||
366 | } |
||
367 | } |
||
368 | |||
369 | return $value; |
||
370 | } |
||
371 | 28 | } |
|
372 | |||
373 | |||
374 | /** |
||
375 | * Prepare application return value into a string |
||
376 | * |
||
377 | * @access public |
||
378 | * @return string |
||
379 | */ |
||
380 | public function __toString() |
||
381 | { |
||
382 | if (!$this->output) { |
||
383 | $this->output = ''; |
||
384 | } |
||
385 | |||
386 | App::callEvent('postApplication'); |
||
387 | |||
388 | return $this->output; |
||
389 | } |
||
390 | |||
391 | |||
392 | /** |
||
393 | * Returns a reference of object once instantiated |
||
394 | * |
||
395 | * @access public |
||
396 | * @return object |
||
397 | */ |
||
398 | 28 | public static function getInstance() |
|
406 | } |
||
407 |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..