Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like ImagesManager 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 ImagesManager, and based on these observations, apply Extract Interface, too.
1 | <?php |
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19 | */ |
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20 | class ImagesManager |
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21 | { |
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22 | |||
23 | /** |
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24 | * Path name for origins images folder without uploads path |
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25 | */ |
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26 | const IMAGES_ORIGIN_DIR_PATH = '/uploads/images/bimages/'; |
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27 | |||
28 | /** |
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29 | * Path name for origins images folder without uploads path |
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30 | */ |
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31 | const IMAGES_TUNED_DIR_PATH = '/uploads/banners/tuned/'; |
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32 | |||
33 | /** |
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34 | * Image file input name |
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35 | */ |
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36 | const IMAGE_FILE_FIELD = 'file-image'; |
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37 | |||
38 | /** |
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39 | * Image upload file allowed types |
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40 | */ |
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41 | const IMAGES_UPLOAD_ALLOWED_TYPES = 'jpg|gif|png|jpeg'; |
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42 | |||
43 | /** |
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44 | * Image file max size |
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45 | */ |
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46 | const IMAGE_MAX_SIZE = '51200'; |
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47 | |||
48 | /** |
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49 | * @var ImagesManager instance |
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50 | */ |
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51 | private static $instance = NULL; |
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52 | |||
53 | private function __construct() { |
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56 | |||
57 | /** |
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58 | * Get ImagesManager instance |
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59 | * @return ImagesManager instance |
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60 | */ |
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61 | public static function getInstance() { |
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67 | |||
68 | /** |
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69 | * Delete images if they not used |
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70 | * @deprecated |
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71 | */ |
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72 | public function deleteNotExistingImages() { |
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88 | |||
89 | /** Get tuned image path |
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90 | * @param string $image_name - banner image name |
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91 | * @return string |
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92 | */ |
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93 | public function getImageOriginPath($image_name = NULL) { |
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96 | |||
97 | /** Get origin image path |
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98 | * @param string $image_name - banner image name |
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99 | * @return string |
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100 | */ |
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101 | public function getImageTunedPath($image_name = NULL) { |
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104 | |||
105 | /** |
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106 | * Delete image files: origin image and tuned image from uploads |
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107 | * @param int $imageId |
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108 | * @param null|string $locale |
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109 | * @return bool |
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110 | * @throws PropelException |
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111 | */ |
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112 | public function delete($imageId, $locale = NULL) { |
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137 | |||
138 | /** |
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139 | * Delete image file |
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140 | * @param string $image_path - path to image file |
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141 | * @return bool |
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142 | */ |
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143 | private function deleteImageFile($image_path) { |
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150 | |||
151 | /** |
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152 | * @param string $path |
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153 | */ |
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154 | protected function buildImagePath($path) { |
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163 | |||
164 | /** |
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165 | * Save image file |
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166 | * @param $imageId |
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167 | * @param $locale |
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168 | * @return string |
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169 | * @throws Exception |
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170 | */ |
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171 | public function saveImage($imageId = NULL, $locale = NULL) { |
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202 | |||
203 | /** |
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204 | * Upload image |
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205 | * @throws \Exception |
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206 | */ |
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207 | public function uploadImage() { |
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224 | |||
225 | /** |
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226 | * Check on errors exists while upload file |
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227 | * @return bool |
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228 | */ |
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229 | private function checkImageUploadErrors() { |
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254 | |||
255 | /** |
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256 | * Get images ordered by page types |
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257 | * @param Banners $banner - banner object |
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258 | * @param string $locale - locale name |
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259 | * @return array |
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260 | */ |
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261 | public function getImagesByPageType($banner, $locale) { |
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313 | |||
314 | /** |
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315 | * Prepare banner image data for save into DB |
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316 | * @param array $data - image data array |
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317 | * @param $bannerId - banner id |
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318 | * @param $locale - locale name |
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319 | * @return array |
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320 | */ |
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321 | public function prepareImageData(array $data, $bannerId, $locale) { |
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347 | |||
348 | /** |
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349 | * Make inactive banner images that has time out active_to date |
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350 | */ |
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351 | public function setInactiveOnTimeOut() { |
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357 | |||
358 | } |