Completed
Push — master ( 2425ba...a05a60 )
by Tim
9s
created

UrlRewriteUpdateObserver::prepareUrlRewrites()   B

Complexity

Conditions 2
Paths 2

Size

Total Lines 24
Code Lines 10

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 10
CRAP Score 2

Importance

Changes 0
Metric Value
c 0
b 0
f 0
dl 0
loc 24
ccs 10
cts 10
cp 1
rs 8.9713
cc 2
eloc 10
nc 2
nop 0
crap 2
1
<?php
2
3
/**
4
 * TechDivision\Import\Product\UrlRewrite\Observers\UrlRewriteUpdateObserver
5
 *
6
 * NOTICE OF LICENSE
7
 *
8
 * This source file is subject to the Open Software License (OSL 3.0)
9
 * that is available through the world-wide-web at this URL:
10
 * http://opensource.org/licenses/osl-3.0.php
11
 *
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 * PHP version 5
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 *
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 * @author    Tim Wagner <[email protected]>
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 * @copyright 2016 TechDivision GmbH <[email protected]>
16
 * @license   http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
17
 * @link      https://github.com/techdivision/import-product-url-rewrite
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 * @link      http://www.techdivision.com
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 */
20
21
namespace TechDivision\Import\Product\UrlRewrite\Observers;
22
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use TechDivision\Import\Product\Utils\CoreConfigDataKeys;
24
use TechDivision\Import\Product\UrlRewrite\Utils\MemberNames;
25
use TechDivision\Import\Product\UrlRewrite\Utils\ColumnKeys;
26
use TechDivision\Import\Product\UrlRewrite\Utils\ConfigurationKeys;
27
28
/**
29
 * Observer that creates/updates the product's URL rewrites.
30
 *
31
 * @author    Tim Wagner <[email protected]>
32
 * @copyright 2016 TechDivision GmbH <[email protected]>
33
 * @license   http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
34
 * @link      https://github.com/techdivision/import-product-url-rewrite
35
 * @link      http://www.techdivision.com
36
 */
37
class UrlRewriteUpdateObserver extends UrlRewriteObserver
38
{
39
40
    /**
41
     * Array with the existing URL rewrites of the actual product.
42
     *
43
     * @var array
44
     */
45
    protected $existingUrlRewrites = array();
46
47
    /**
48
     * Process the observer's business logic.
49
     *
50
     * @return void
51
     * @see \TechDivision\Import\Product\UrlRewrite\Observers\UrlRewriteObserver::process()
52
     */
53 1
    protected function process()
54
    {
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        // process the new URL rewrites first
57 1
        parent::process();
58
59
        // load the root category
60 1
        $rootCategory = $this->getRootCategory();
61
62
        // create redirect URL rewrites for the existing URL rewrites
63 1
        foreach ($this->existingUrlRewrites as $existingUrlRewrite) {
64
            // if the URL rewrite has been created manually
65 1
            if ((integer) $existingUrlRewrite[MemberNames::IS_AUTOGENERATED] === 0) {
66
                // do NOTHING, because someone really WANTED to create THIS redirect
67
                continue;
68
            }
69
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            // query whether or not 301 redirects have to be created, so don't create redirects
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            // if the product is NOT visible or the rewrite history has been deactivated
72 1
            if ($this->isVisible() && $this->getSubject()->getCoreConfigData(CoreConfigDataKeys::CATALOG_SEO_SAVE_REWRITES_HISTORY, true)) {
73
                // if the URL rewrite already IS a redirect
74 1
                if ((integer) $existingUrlRewrite[MemberNames::REDIRECT_TYPE] !== 0) {
75
                    // do NOT create another redirect or update the actual one
76
                    continue;
77
                }
78
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                // initialize the data with the URL rewrites new 301 configuration
80 1
                $attr = array(MemberNames::REDIRECT_TYPE => 301);
81
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                // initialize the category with the root category
83 1
                $category = $rootCategory;
84
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                // load the metadata from the existing URL rewrite
86 1
                $metadata = $this->getMetadata($existingUrlRewrite);
87
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                // query whether or not the URL key of the existing URL rewrite has changed
89 1
                if (isset($this->urlRewrites[$metadata[UrlRewriteObserver::CATEGORY_ID]])) {
90
                    try {
91
                        // if yes, try to load the original category and OVERRIDE the default category
92 1
                        $category = $this->getCategory($metadata[UrlRewriteObserver::CATEGORY_ID]);
93
                    } catch (\Exception $e) {
94
                        // if the old category can NOT be loaded, override the metadata
95
                        // of the category with the data of the default category
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                        $attr[MemberNames::METADATA] = serialize(array());
97
98
                        // finally log a warning that the old category is not available ony more
99
                        $this->getSubject()
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                             ->getSystemLogger()
101
                             ->warning(sprintf('Category with ID %d is not longer available', $metadata[UrlRewriteObserver::CATEGORY_ID]));
102
                    }
103
                }
104
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                // load target path/metadata for the actual category
106 1
                $attr[MemberNames::TARGET_PATH] = $this->prepareRequestPath($category);
107
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                // merge and return the prepared URL rewrite
109 1
                $existingUrlRewrite = $this->mergeEntity($existingUrlRewrite, $attr);
110
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                // create the URL rewrite
112 1
                $this->persistUrlRewrite($existingUrlRewrite);
113
114
            } else {
115
                // query whether or not the URL rewrite has to be removed
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                if ($this->getSubject()->getConfiguration()->hasParam(ConfigurationKeys::CLEAN_UP_URL_REWRITES) &&
117
                    $this->getSubject()->getConfiguration()->getParam(ConfigurationKeys::CLEAN_UP_URL_REWRITES)
118
                ) {
119
                    // delete the existing URL rewrite
120
                    $this->deleteUrlRewrite($existingUrlRewrite);
121
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                    // log a message, that old URL rewrites have been cleaned-up
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                    $this->getSubject()
124
                         ->getSystemLogger()
125
                         ->notice(
126
                             sprintf(
127
                                 'Cleaned-up %d URL rewrite "%s" for product with SKU "%s"',
128
                                 $existingUrlRewrite[MemberNames::REQUEST_PATH],
129 1
                                 $this->getValue(ColumnKeys::SKU)
130
                             )
131
                         );
132
                }
133
            }
134
        }
135 1
    }
136
137
    /**
138
     * Return's the URL rewrite for the passed request path.
139
     *
140
     * @param string $requestPath The request path to return the URL rewrite for
141
     *
142
     * @return array|null The URL rewrite
143
     */
144
    protected function getExistingUrlRewrite($requestPath)
145
    {
146
        if (isset($this->existingUrlRewrites[$requestPath])) {
147
            return $this->existingUrlRewrites[$requestPath];
148
        }
149
    }
150
151
    /**
152
     * Remove's the passed URL rewrite from the existing one's.
153
     *
154
     * @param array $urlRewrite The URL rewrite to remove
155
     *
156
     * @return void
157
     */
158
    protected function removeExistingUrlRewrite(array $urlRewrite)
159
    {
160
161
        // load request path
162
        $requestPath = $urlRewrite[MemberNames::REQUEST_PATH];
163
164
        // query whether or not the URL rewrite exists and remove it, if available
165
        if (isset($this->existingUrlRewrites[$requestPath])) {
166
            unset($this->existingUrlRewrites[$requestPath]);
167
        }
168
    }
169
170
    /**
171
     * Prepare's the URL rewrites that has to be created/updated.
172
     *
173
     * @return void
174
     * @see \TechDivision\Import\Product\UrlRewrite\Observers\UrlRewriteObserver::prepareUrlRewrites()
175
     */
176 1
    protected function prepareUrlRewrites()
177
    {
178
179
        // (re-)initialize the array for the existing URL rewrites
180 1
        $this->existingUrlRewrites = array();
181
182
        // prepare the new URL rewrites first
183 1
        parent::prepareUrlRewrites();
184
185
        // load the store ID to use
186 1
        $storeId = $this->getSubject()->getRowStoreId();
0 ignored issues
show
Bug introduced by
The method getRowStoreId() does not exist on TechDivision\Import\Subjects\SubjectInterface. Did you maybe mean getRow()?

This check marks calls to methods that do not seem to exist on an object.

This is most likely the result of a method being renamed without all references to it being renamed likewise.

Loading history...
187
188
        // load the existing URL rewrites of the actual entity
189 1
        $existingUrlRewrites = $this->getUrlRewritesByEntityTypeAndEntityIdAndStoreId(
190 1
            UrlRewriteObserver::ENTITY_TYPE,
191 1
            $this->entityId,
192
            $storeId
193
        );
194
195
        // prepare the existing URL rewrites to improve searching them by request path
196 1
        foreach ($existingUrlRewrites as $existingUrlRewrite) {
197 1
            $this->existingUrlRewrites[$existingUrlRewrite[MemberNames::REQUEST_PATH]] = $existingUrlRewrite;
198
        }
199 1
    }
200
201
    /**
202
     * Initialize the category product with the passed attributes and returns an instance.
203
     *
204
     * @param array $attr The category product attributes
205
     *
206
     * @return array The initialized category product
207
     */
208 1
    protected function initializeUrlRewrite(array $attr)
209
    {
210
211
        // load the category ID of the passed URL rewrite entity
212 1
        $categoryId = $this->getCategoryIdFromMetadata($attr);
213
214
        // iterate over the availabel URL rewrites to find the one that matches the category ID
215 1
        foreach ($this->existingUrlRewrites as $urlRewrite) {
216
            // compare the category IDs AND the request path
217 1
            if ($categoryId === $this->getCategoryIdFromMetadata($urlRewrite) &&
218 1
                $attr[MemberNames::REQUEST_PATH] === $urlRewrite[MemberNames::REQUEST_PATH]
219
            ) {
220
                // if a URL rewrite has been found, do NOT create a redirect
221
                $this->removeExistingUrlRewrite($urlRewrite);
222
223
                // if the found URL rewrite has been created manually
224
                if ((integer) $urlRewrite[MemberNames::IS_AUTOGENERATED] === 0) {
225
                    // do NOT update it nor create another redirect
226
                    return false;
0 ignored issues
show
Bug Best Practice introduced by
The return type of return false; (false) is incompatible with the return type of the parent method TechDivision\Import\Prod...r::initializeUrlRewrite of type array.

If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.

Let’s take a look at an example:

class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}

Our function my_function expects a Post object, and outputs the author of the post. The base class Post returns a simple string and outputting a simple string will work just fine. However, the child class BlogPost which is a sub-type of Post instead decided to return an object, and is therefore violating the SOLID principles. If a BlogPost were passed to my_function, PHP would not complain, but ultimately fail when executing the strtoupper call in its body.

Loading history...
227
                }
228
229
                // if the found URL rewrite has been autogenerated, then update it
230 1
                return $this->mergeEntity($urlRewrite, $attr);
231
            }
232
        }
233
234
        // simple return the attributes
235 1
        return $attr;
236
    }
237
238
    /**
239
     * Extracts the category ID of the passed URL rewrite entity, if available, and return's it.
240
     *
241
     * @param array $attr The URL rewrite entity to extract and return the category ID for
242
     *
243
     * @return integer|null The category ID if available, else NULL
244
     */
245 1
    protected function getCategoryIdFromMetadata(array $attr)
246
    {
247
248
        // load the metadata of the passed URL rewrite entity
249 1
        $metadata = $this->getMetadata($attr);
250
251
        // return the category ID from the metadata
252 1
        return $metadata[UrlRewriteObserver::CATEGORY_ID];
253
    }
254
255
    /**
256
     * Initialize the URL rewrite product => category relation with the passed attributes
257
     * and returns an instance.
258
     *
259
     * @param array $attr The URL rewrite product => category relation attributes
260
     *
261
     * @return array|null The initialized URL rewrite product => category relation
262
     */
263 1
    protected function initializeUrlRewriteProductCategory($attr)
264
    {
265
266
        // try to load the URL rewrite product category relation
267 1
        if ($urlRewriteProductCategory = $this->loadUrlRewriteProductCategory($attr[MemberNames::URL_REWRITE_ID])) {
268
            return $this->mergeEntity($urlRewriteProductCategory, $attr);
269
        }
270
271
        // simple return the URL rewrite product category
272 1
        return $attr;
273
    }
274
275
    /**
276
     * Return's the unserialized metadata of the passed URL rewrite. If the
277
     * metadata doesn't contain a category ID, the category ID of the root
278
     * category will be added.
279
     *
280
     * @param array $urlRewrite The URL rewrite to return the metadata for
281
     *
282
     * @return array The metadata of the passed URL rewrite
283
     */
284 1
    protected function getMetadata($urlRewrite)
285
    {
286
287
        // initialize the array with the metaddata
288 1
        $metadata = array();
289
290
        // try to unserialize the metadata from the passed URL rewrite
291 1
        if (isset($urlRewrite[MemberNames::METADATA])) {
292 1
            $metadata = unserialize($urlRewrite[MemberNames::METADATA]);
293
        }
294
295
        // query whether or not a category ID has been found
296 1
        if (isset($metadata[UrlRewriteObserver::CATEGORY_ID])) {
297
            // if yes, return the metadata
298 1
            return $metadata;
299
        }
300
301
        // if not, append the ID of the root category
302 1
        $rootCategory = $this->getRootCategory();
303 1
        $metadata[UrlRewriteObserver::CATEGORY_ID] = $rootCategory[MemberNames::ENTITY_ID];
304
305
        // and return the metadata
306 1
        return $metadata;
307
    }
308
309
    /**
310
     * Return's the category with the passed ID.
311
     *
312
     * @param integer $categoryId The ID of the category to return
313
     *
314
     * @return array The category data
315
     */
316 1
    protected function getCategory($categoryId)
317
    {
318 1
        return $this->getSubject()->getCategory($categoryId);
0 ignored issues
show
Bug introduced by
It seems like you code against a concrete implementation and not the interface TechDivision\Import\Subjects\SubjectInterface as the method getCategory() does only exist in the following implementations of said interface: TechDivision\Import\Prod...\AbstractProductSubject, TechDivision\Import\Product\Subjects\BunchSubject, TechDivision\Import\Prod...jects\UrlRewriteSubject.

Let’s take a look at an example:

interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}

In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.

Available Fixes

  1. Change the type-hint for the parameter:

    class AuthSystem
    {
        public function authenticate(MyUser $user) { /* ... */ }
    }
    
  2. Add an additional type-check:

    class AuthSystem
    {
        public function authenticate(User $user)
        {
            if ($user instanceof MyUser) {
                $this->logger->info(/** ... */);
            }
    
            // or alternatively
            if ( ! $user instanceof MyUser) {
                throw new \LogicException(
                    '$user must be an instance of MyUser, '
                   .'other instances are not supported.'
                );
            }
    
        }
    }
    
Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case.
  1. Add the method to the interface:

    interface User
    {
        /** @return string */
        public function getPassword();
    
        /** @return string */
        public function getDisplayName();
    }
    
Loading history...
319
    }
320
321
    /**
322
     * Return's the URL rewrites for the passed URL entity type and ID.
323
     *
324
     * @param string  $entityType The entity type to load the URL rewrites for
325
     * @param integer $entityId   The entity ID to load the URL rewrites for
326
     * @param integer $storeId    The store ID to load the URL rewrites for
327
     *
328
     * @return array The URL rewrites
329
     */
330 1
    public function getUrlRewritesByEntityTypeAndEntityIdAndStoreId($entityType, $entityId, $storeId)
331
    {
332 1
        return $this->getProductUrlRewriteProcessor()->getUrlRewritesByEntityTypeAndEntityIdAndStoreId($entityType, $entityId, $storeId);
333
    }
334
335
    /**
336
     * Return's the URL rewrite product category relation for the passed
337
     * URL rewrite ID.
338
     *
339
     * @param integer $urlRewriteId The URL rewrite ID to load the URL rewrite product category relation for
340
     *
341
     * @return array|false The URL rewrite product category relations
342
     */
343 1
    protected function loadUrlRewriteProductCategory($urlRewriteId)
344
    {
345 1
        return $this->getProductUrlRewriteProcessor()->loadUrlRewriteProductCategory($urlRewriteId);
346
    }
347
348
    /**
349
     * Delete's the URL rewrite with the passed attributes.
350
     *
351
     * @param array       $row  The attributes of the entity to delete
352
     * @param string|null $name The name of the prepared statement that has to be executed
353
     *
354
     * @return void
355
     */
356
    protected function deleteUrlRewrite($row, $name = null)
357
    {
358
        $this->getProductUrlRewriteProcessor()->removeUrlRewrite($row, $name);
0 ignored issues
show
Bug introduced by
The method removeUrlRewrite() does not seem to exist on object<TechDivision\Impo...riteProcessorInterface>.

This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.

This is most likely a typographical error or the method has been renamed.

Loading history...
359
    }
360
}
361