Complex classes like Attachment 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 Attachment, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 7 | class Attachment |
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| 8 | { |
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| 9 | /** |
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| 10 | * The fallback text to use for clients that don't support attachments. |
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| 11 | * |
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| 12 | * @var string |
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| 13 | */ |
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| 14 | protected $fallback; |
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| 15 | |||
| 16 | /** |
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| 17 | * Optional text that should appear within the attachment. |
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| 18 | * |
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| 19 | * @var string |
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| 20 | */ |
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| 21 | protected $text; |
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| 22 | |||
| 23 | /** |
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| 24 | * Optional image that should appear within the attachment. |
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| 25 | * |
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| 26 | * @var string |
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| 27 | */ |
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| 28 | protected $image_url; |
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| 29 | |||
| 30 | /** |
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| 31 | * Optional thumbnail that should appear within the attachment. |
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| 32 | * |
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| 33 | * @var string |
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| 34 | */ |
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| 35 | protected $thumb_url; |
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| 36 | |||
| 37 | /** |
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| 38 | * Optional text that should appear above the formatted data. |
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| 39 | * |
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| 40 | * @var string |
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| 41 | */ |
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| 42 | protected $pretext; |
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| 43 | |||
| 44 | /** |
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| 45 | * Optional title for the attachment. |
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| 46 | * |
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| 47 | * @var string |
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| 48 | */ |
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| 49 | protected $title; |
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| 50 | |||
| 51 | /** |
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| 52 | * Optional title link for the attachment. |
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| 53 | * |
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| 54 | * @var string |
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| 55 | */ |
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| 56 | protected $title_link; |
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| 57 | |||
| 58 | /** |
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| 59 | * Optional author name for the attachment. |
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| 60 | * |
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| 61 | * @var string |
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| 62 | */ |
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| 63 | protected $author_name; |
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| 64 | |||
| 65 | /** |
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| 66 | * Optional author link for the attachment. |
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| 67 | * |
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| 68 | * @var string |
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| 69 | */ |
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| 70 | protected $author_link; |
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| 71 | |||
| 72 | /** |
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| 73 | * Optional author icon for the attachment. |
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| 74 | * |
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| 75 | * @var string |
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| 76 | */ |
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| 77 | protected $author_icon; |
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| 78 | |||
| 79 | /** |
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| 80 | * The color to use for the attachment. |
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| 81 | * |
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| 82 | * @var string |
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| 83 | */ |
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| 84 | protected $color = 'good'; |
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| 85 | |||
| 86 | /** |
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| 87 | * The text to use for the attachment footer. |
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| 88 | * |
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| 89 | * @var string |
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| 90 | */ |
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| 91 | protected $footer; |
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| 92 | |||
| 93 | /** |
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| 94 | * The icon to use for the attachment footer. |
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| 95 | * |
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| 96 | * @var string |
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| 97 | */ |
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| 98 | protected $footer_icon; |
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| 99 | |||
| 100 | /** |
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| 101 | * The timestamp to use for the attachment. |
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| 102 | * |
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| 103 | * @var \DateTime |
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| 104 | */ |
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| 105 | protected $timestamp; |
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| 106 | |||
| 107 | /** |
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| 108 | * The fields of the attachment. |
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| 109 | * |
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| 110 | * @var array |
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| 111 | */ |
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| 112 | protected $fields = []; |
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| 113 | |||
| 114 | /** |
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| 115 | * The fields of the attachment that Slack should interpret |
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| 116 | * with its Markdown-like language. |
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| 117 | * |
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| 118 | * @var array |
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| 119 | */ |
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| 120 | protected $markdown_fields = []; |
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| 121 | |||
| 122 | /** |
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| 123 | * A collection of actions (buttons) to include in the attachment. |
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| 124 | * A maximum of 5 actions may be provided. |
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| 125 | * |
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| 126 | * @var array |
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| 127 | */ |
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| 128 | protected $actions = []; |
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| 129 | |||
| 130 | /** |
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| 131 | * Instantiate a new Attachment. |
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| 132 | * |
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| 133 | * @param array $attributes |
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| 134 | * @return void |
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| 135 | */ |
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| 136 | public function __construct(array $attributes) |
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| 206 | |||
| 207 | /** |
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| 208 | * Get the fallback text. |
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| 209 | * |
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| 210 | * @return string |
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| 211 | */ |
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| 212 | public function getFallback() |
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| 216 | |||
| 217 | /** |
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| 218 | * Set the fallback text. |
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| 219 | * |
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| 220 | * @param string $fallback |
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| 221 | * @return $this |
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| 222 | */ |
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| 223 | public function setFallback($fallback) |
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| 229 | |||
| 230 | /** |
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| 231 | * Get the optional text to appear within the attachment. |
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| 232 | * |
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| 233 | * @return string |
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| 234 | */ |
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| 235 | public function getText() |
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| 239 | |||
| 240 | /** |
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| 241 | * Set the optional text to appear within the attachment. |
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| 242 | * |
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| 243 | * @param string $text |
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| 244 | * @return $this |
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| 245 | */ |
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| 246 | public function setText($text) |
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| 252 | |||
| 253 | /** |
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| 254 | * Get the optional image to appear within the attachment. |
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| 255 | * |
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| 256 | * @return string |
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| 257 | */ |
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| 258 | public function getImageUrl() |
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| 262 | |||
| 263 | /** |
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| 264 | * Set the optional image to appear within the attachment. |
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| 265 | * |
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| 266 | * @param string $image_url |
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| 267 | * @return $this |
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| 268 | */ |
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| 269 | public function setImageUrl($image_url) |
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| 275 | |||
| 276 | /** |
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| 277 | * Get the optional thumbnail to appear within the attachment. |
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| 278 | * |
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| 279 | * @return string |
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| 280 | */ |
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| 281 | public function getThumbUrl() |
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| 285 | |||
| 286 | /** |
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| 287 | * Set the optional thumbnail to appear within the attachment. |
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| 288 | * |
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| 289 | * @param string $thumb_url |
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| 290 | * @return $this |
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| 291 | */ |
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| 292 | public function setThumbUrl($thumb_url) |
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| 298 | |||
| 299 | /** |
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| 300 | * Get the text that should appear above the formatted data. |
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| 301 | * |
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| 302 | * @return string |
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| 303 | */ |
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| 304 | public function getPretext() |
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| 308 | |||
| 309 | /** |
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| 310 | * Set the text that should appear above the formatted data. |
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| 311 | * |
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| 312 | * @param string $pretext |
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| 313 | * @return $this |
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| 314 | */ |
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| 315 | public function setPretext($pretext) |
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| 321 | |||
| 322 | /** |
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| 323 | * Get the color to use for the attachment. |
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| 324 | * |
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| 325 | * @return string |
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| 326 | */ |
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| 327 | public function getColor() |
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| 331 | |||
| 332 | /** |
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| 333 | * Set the color to use for the attachment. |
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| 334 | * |
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| 335 | * @param string $color |
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| 336 | * @return $this |
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| 337 | */ |
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| 338 | public function setColor($color) |
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| 344 | |||
| 345 | /** |
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| 346 | * Get the footer to use for the attachment. |
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| 347 | * |
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| 348 | * @return string |
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| 349 | */ |
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| 350 | public function getFooter() |
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| 354 | |||
| 355 | /** |
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| 356 | * Set the footer text to use for the attachment. |
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| 357 | * |
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| 358 | * @param string $footer |
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| 359 | * @return $this |
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| 360 | */ |
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| 361 | public function setFooter($footer) |
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| 367 | |||
| 368 | /** |
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| 369 | * Get the footer icon to use for the attachment. |
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| 370 | * |
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| 371 | * @return string |
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| 372 | */ |
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| 373 | public function getFooterIcon() |
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| 377 | |||
| 378 | /** |
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| 379 | * Set the footer icon to use for the attachment. |
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| 380 | * |
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| 381 | * @param string $footerIcon |
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| 382 | * @return $this |
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| 383 | */ |
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| 384 | public function setFooterIcon($footerIcon) |
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| 390 | |||
| 391 | /** |
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| 392 | * Get the timestamp to use for the attachment. |
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| 393 | * |
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| 394 | * @return \DateTime |
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| 395 | */ |
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| 396 | public function getTimestamp() |
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| 400 | |||
| 401 | /** |
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| 402 | * Set the timestamp to use for the attachment. |
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| 403 | * |
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| 404 | * @param \DateTime $timestamp |
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| 405 | * @return $this |
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| 406 | */ |
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| 407 | public function setTimestamp($timestamp) |
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| 413 | |||
| 414 | /** |
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| 415 | * Get the title to use for the attachment. |
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| 416 | * |
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| 417 | * @return string |
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| 418 | */ |
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| 419 | public function getTitle() |
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| 423 | |||
| 424 | /** |
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| 425 | * Set the title to use for the attachment. |
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| 426 | * |
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| 427 | * @param string $title |
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| 428 | * @return $this |
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| 429 | */ |
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| 430 | public function setTitle($title) |
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| 436 | |||
| 437 | /** |
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| 438 | * Get the title link to use for the attachment. |
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| 439 | * |
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| 440 | * @return string |
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| 441 | */ |
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| 442 | public function getTitleLink() |
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| 446 | |||
| 447 | /** |
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| 448 | * Set the title link to use for the attachment. |
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| 449 | * |
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| 450 | * @param string $title_link |
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| 451 | * @return $this |
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| 452 | */ |
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| 453 | public function setTitleLink($title_link) |
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| 459 | |||
| 460 | /** |
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| 461 | * Get the author name to use for the attachment. |
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| 462 | * |
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| 463 | * @return string |
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| 464 | */ |
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| 465 | public function getAuthorName() |
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| 469 | |||
| 470 | /** |
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| 471 | * Set the author name to use for the attachment. |
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| 472 | * |
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| 473 | * @param string $author_name |
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| 474 | * @return $this |
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| 475 | */ |
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| 476 | public function setAuthorName($author_name) |
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| 482 | |||
| 483 | /** |
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| 484 | * Get the author link to use for the attachment. |
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| 485 | * |
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| 486 | * @return string |
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| 487 | */ |
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| 488 | public function getAuthorLink() |
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| 492 | |||
| 493 | /** |
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| 494 | * Set the auhtor link to use for the attachment. |
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| 495 | * |
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| 496 | * @param string $author_link |
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| 497 | * @return $this |
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| 498 | */ |
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| 499 | public function setAuthorLink($author_link) |
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| 505 | |||
| 506 | /** |
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| 507 | * Get the author icon to use for the attachment. |
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| 508 | * |
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| 509 | * @return string |
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| 510 | */ |
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| 511 | public function getAuthorIcon() |
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| 515 | |||
| 516 | /** |
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| 517 | * Set the author icon to use for the attachment. |
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| 518 | * |
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| 519 | * @param string $author_icon |
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| 520 | * @return $this |
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| 521 | */ |
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| 522 | public function setAuthorIcon($author_icon) |
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| 528 | |||
| 529 | /** |
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| 530 | * Get the fields for the attachment. |
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| 531 | * |
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| 532 | * @return array |
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| 533 | */ |
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| 534 | public function getFields() |
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| 538 | |||
| 539 | /** |
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| 540 | * Set the fields for the attachment. |
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| 541 | * |
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| 542 | * @param array $fields |
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| 543 | * @return $this |
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| 544 | */ |
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| 545 | public function setFields(array $fields) |
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| 555 | |||
| 556 | /** |
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| 557 | * Add a field to the attachment. |
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| 558 | * |
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| 559 | * @param mixed $field |
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| 560 | * @return $this |
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| 561 | */ |
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| 562 | public function addField($field) |
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| 576 | |||
| 577 | /** |
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| 578 | * Clear the fields for the attachment. |
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| 579 | * |
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| 580 | * @return $this |
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| 581 | */ |
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| 582 | public function clearFields() |
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| 588 | |||
| 589 | /** |
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| 590 | * Clear the actions for the attachment. |
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| 591 | * |
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| 592 | * @return $this |
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| 593 | */ |
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| 594 | public function clearActions() |
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| 600 | |||
| 601 | /** |
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| 602 | * Get the fields Slack should interpret in its |
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| 603 | * Markdown-like language. |
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| 604 | * |
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| 605 | * @return array |
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| 606 | */ |
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| 607 | public function getMarkdownFields() |
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| 611 | |||
| 612 | /** |
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| 613 | * Set the fields Slack should interpret in its |
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| 614 | * Markdown-like language. |
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| 615 | * |
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| 616 | * @param array $fields |
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| 617 | * @return $this |
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| 618 | */ |
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| 619 | public function setMarkdownFields(array $fields) |
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| 625 | |||
| 626 | /** |
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| 627 | * Get the collection of actions (buttons) to include in the attachment. |
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| 628 | * |
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| 629 | * @return AttachmentAction[] |
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| 630 | */ |
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| 631 | public function getActions() |
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| 635 | |||
| 636 | /** |
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| 637 | * Set the collection of actions (buttons) to include in the attachment. |
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| 638 | * |
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| 639 | * @param array $actions |
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| 640 | * @return Attachment |
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| 641 | */ |
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| 642 | public function setActions($actions) |
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| 652 | |||
| 653 | /** |
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| 654 | * Add an action to the attachment. |
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| 655 | * |
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| 656 | * @param mixed $action |
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| 657 | * @return $this |
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| 658 | */ |
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| 659 | public function addAction($action) |
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| 673 | |||
| 674 | /** |
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| 675 | * Convert this attachment to its array representation. |
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| 676 | * |
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| 677 | * @return array |
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| 678 | */ |
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| 679 | public function toArray() |
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| 704 | |||
| 705 | /** |
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| 706 | * Iterates over all fields in this attachment and returns |
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| 707 | * them in their array form. |
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| 708 | * |
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| 709 | * @return array |
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| 710 | */ |
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| 711 | protected function getFieldsAsArrays() |
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| 721 | |||
| 722 | /** |
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| 723 | * Iterates over all actions in this attachment and returns |
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| 724 | * them in their array form. |
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| 725 | * |
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| 726 | * @return array |
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| 727 | */ |
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| 728 | protected function getActionsAsArrays() |
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| 738 | } |
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| 739 |
Adding a
@returnannotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.