Completed
Push — master ( b3248f...ed993b )
by
unknown
21:41 queued 06:34
created

App::callEvent()   B

Complexity

Conditions 5
Paths 5

Size

Total Lines 22
Code Lines 14

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 0
CRAP Score 30

Importance

Changes 0
Metric Value
c 0
b 0
f 0
dl 0
loc 22
ccs 0
cts 12
cp 0
rs 8.6737
cc 5
eloc 14
nc 5
nop 3
crap 30
1
<?php
2
3
namespace Zewa;
4
5
//use Zewa\Interfaces\ContainerInterface;
6
7
/**
8
 * This class is the starting point for application
9
 *
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 * @author Zechariah Walden<zech @ zewadesign.com>
11
 */
12
class App
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{
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    /**
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     * Events
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     */
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    private static $events;
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    /**
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     * Return value from application
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     *
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     * @var string
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     */
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    private $output = false;
25
26
    /**
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     * Namespaced controller path
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     *
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     * @var string
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     */
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    private $class;
32
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    /**
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     * Instantiated class object
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     *
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     * @var Controller
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     */
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    private $instantiatedClass;
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    /**
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     * Module being accessed
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     *
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     * @var string
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     */
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    private $module;
46
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    /**
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     * Controller being accessed
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     *
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     * @var string
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     */
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    private $controller;
53
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    /**
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     * Method being accessed
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     *
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     * @var string
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     */
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    private $method;
60
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    /**
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     * Params being passed
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     *
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     * @var array
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     */
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    private $params;
67
68
    /**
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     * @var DIContainer $container
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     */
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    private $container;
72
73
    /**
74
     * Application bootstrap process
75
     *
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     * The application registers the configuration in the app/config/core.php
77
     * and then processes, and makes available the configured resources
78
     *
79
     * App constructor.
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     * @param DIContainer $container
81
     */
82 28
    public function __construct(DIContainer $container)
83
    {
84 28
        $this->configuration = $container->resolve('\Zewa\Config');
0 ignored issues
show
Bug introduced by
The property configuration does not exist. Did you maybe forget to declare it?

In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:

class MyClass { }

$x = new MyClass();
$x->foo = true;

Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion:

class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;
Loading history...
85 28
        $this->container = $container;
86
87 28
        $this->router = $container->resolve('\Zewa\Router', true);
0 ignored issues
show
Bug introduced by
The property router does not exist. Did you maybe forget to declare it?

In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:

class MyClass { }

$x = new MyClass();
$x->foo = true;

Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion:

class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;
Loading history...
88 18
        $this->request = $container->resolve('\Zewa\Request', true);
0 ignored issues
show
Bug introduced by
The property request does not exist. Did you maybe forget to declare it?

In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:

class MyClass { }

$x = new MyClass();
$x->foo = true;

Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion:

class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;
Loading history...
89 18
        $this->view = $container->resolve('\Zewa\View');
0 ignored issues
show
Bug introduced by
The property view does not exist. Did you maybe forget to declare it?

In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:

class MyClass { }

$x = new MyClass();
$x->foo = true;

Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion:

class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;
Loading history...
90
91 18
        $this->prepare();
92 18
    }
93
94
    /**
95
     * Calls the proper shell for app execution
96
     *
97
     * @access private
98
     */
99
    public function initialize()
100
    {
101
        $this->start();
102
        return $this;
103
    }
104
105
    /**
106
     * App preparation cycle
107
     */
108 18
    private function prepare()
109
    {
110 18
        $routerConfig = $this->configuration->get('Routing');
111
112 18
        $this->module = ucfirst($routerConfig->module);
113 18
        $this->controller = ucfirst($routerConfig->controller);
114 18
        $this->method = $routerConfig->method;
115 18
        $this->params = $routerConfig->params;
116 18
        $this->class = 'Zewa\\App\\Modules\\' . $this->module . '\\Controllers\\' . ucfirst($this->controller);
117 18
    }
118
119
//    public function setContainer(Container $container)
0 ignored issues
show
Unused Code Comprehensibility introduced by
41% of this comment could be valid code. Did you maybe forget this after debugging?

Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it.

The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production.

This check looks for comments that seem to be mostly valid code and reports them.

Loading history...
120
//    {
121
//        $this->container = $container;
122
//    }
123
124
    /**
125
     * Verifies the provided application request is a valid request
126
     *
127
     * @access private
128
     */
129
    private function validateRequest()
130
    {
131
        //catch exception and handle
132
        try {
133
            $class = new \ReflectionClass($this->class);
134
            $class->getMethod($this->method);
135
        } catch (\ReflectionException $e) {
136
            $view = $this->container->resolve('\Zewa\View');
137
            $this->output = $view->render404(['Invalid method requests']); //Router::show404(
138
            return false;
139
        }
140
141
        return true;
142
    }
143
144
    /**
145
     * Processes the application request
146
     *
147
     * @access private
148
     */
149
    private function start()
150
    {
151
        if ($this->validateRequest() === false) {
152
            return false;
153
        }
154
155
        App::callEvent('preController');
156
        $this->instantiatedClass = $this->container->resolve($this->class);
157
        App::callEvent('postController');
158
159
        $this->instantiatedClass->setConfig($this->configuration);
160
        $this->instantiatedClass->setRouter($this->router);
161
        $this->instantiatedClass->setRequest($this->request);
162
        $this->instantiatedClass->setContainer($this->container);
163
        $this->instantiatedClass->setView($this->view);
164
165
        $this->output = call_user_func_array(
166
            [&$this->instantiatedClass, $this->method],
167
            $this->params
168
        );
169
    }
170
171
    /**
172
     * Attach (or remove) multiple callbacks to an event and trigger those callbacks when that event is called.
173
     *
174
     * @param string $event    name
175
     * @param mixed  $value    the optional value to pass to each callback
176
     * @param mixed  $callback the method or function to call - FALSE to remove all callbacks for event
0 ignored issues
show
Bug introduced by
There is no parameter named $value. Was it maybe removed?

This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.

Consider the following example. The parameter $italy is not defined by the method finale(...).

/**
 * @param array $germany
 * @param array $island
 * @param array $italy
 */
function finale($germany, $island) {
    return "2:1";
}

The most likely cause is that the parameter was removed, but the annotation was not.

Loading history...
177
     */
178
179
    public static function addEvent($event, $callback = false)
180
    {
181
        // Adding or removing a callback?
182
        if ($callback !== false) {
183
            self::$events[$event][] = $callback;
184
        } else {
185
            unset(self::$events[$event]);
186
        }
187
    }
188
189
    public function callEvent($event, $method = false, $arguments = [])
190
    {
191
        if (isset(self::$events[$event])) {
192
            foreach (self::$events[$event] as $e) {
193
                if ($method !== false) { // class w/ method specified
194
                    $object = new $e();
195
                    $value = call_user_func_array(
196
                        [&$object, $method],
197
                        $arguments
198
                    );
199
                } else {
200
                    if (class_exists($e)) {
201
                        $value = new $e($arguments); // class w/o method specified
202
                    } else {
203
                        $value = call_user_func($e, $arguments); // function yuk
204
                    }
205
                }
206
            }
207
208
            return $value;
0 ignored issues
show
Bug introduced by
The variable $value does not seem to be defined for all execution paths leading up to this point.

If you define a variable conditionally, it can happen that it is not defined for all execution paths.

Let’s take a look at an example:

function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.

Available Fixes

  1. Check for existence of the variable explicitly:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        if (isset($x)) { // Make sure it's always set.
            echo $x;
        }
    }
    
  2. Define a default value for the variable:

    function myFunction($a) {
        $x = ''; // Set a default which gets overridden for certain paths.
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        echo $x;
    }
    
  3. Add a value for the missing path:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
    
            // We add support for the missing case.
            default:
                $x = '';
                break;
        }
    
        echo $x;
    }
    
Loading history...
209
        }
210
    }
211
212
213
    /**
214
     * Prepare application return value into a string
215
     *
216
     * @access public
217
     * @return string
218
     */
219
    public function __toString()
220
    {
221
        if (!$this->output) {
222
            $this->output = '';
223
        }
224
225
        App::callEvent('postApplication');
226
227
        return $this->output;
228
    }
229
}
230