Complex classes like ShopifyAPIComponent 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 ShopifyAPIComponent, and based on these observations, apply Extract Interface, too.
1 | <?php |
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25 | class ShopifyAPIComponent extends Component |
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26 | { |
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27 | |||
28 | public $api_key; |
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29 | |||
30 | private $shop_domain; |
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31 | private $token; |
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32 | private $shared_secret; |
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33 | private $is_private_app; |
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34 | private $private_app_password; |
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35 | private $nonce; |
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36 | |||
37 | public $controller = null; |
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38 | |||
39 | public function initialize(array $config = []) |
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58 | |||
59 | /** |
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60 | * @param Event $event |
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61 | * @return void |
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62 | */ |
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63 | public function startup(Event $event) |
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67 | |||
68 | /** |
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69 | * @param $controller |
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70 | * @return void |
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71 | */ |
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72 | public function setController($controller) |
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79 | |||
80 | /** |
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81 | * @param string $shopDomain |
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82 | * @return string|null |
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83 | */ |
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84 | public function setShopDomain($shopDomain) |
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88 | |||
89 | /** |
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90 | * @return string|null |
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91 | */ |
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92 | public function getShopDomain() |
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96 | |||
97 | /** |
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98 | * @param string $token |
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99 | * @return string|null |
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100 | */ |
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101 | public function setAccessToken($token) |
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105 | |||
106 | /** |
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107 | * @return int|null |
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108 | */ |
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109 | public function callsMade() |
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113 | |||
114 | /** |
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115 | * @return int|null |
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116 | */ |
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117 | public function callLimit() |
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121 | |||
122 | /** |
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123 | * @param $responseHeaders |
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124 | * @return int|null |
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125 | */ |
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126 | public function callsLeft($responseHeaders) |
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130 | |||
131 | /** |
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132 | * @param string $method |
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133 | * @param string $path |
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134 | * @param array $params |
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135 | * @return array|null |
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136 | */ |
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137 | public function call($method, $path, $params = []) |
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163 | |||
164 | /** |
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165 | * @param int $index |
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166 | * @return int |
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167 | */ |
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168 | private function shopApiCallLimitParam($index) |
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174 | |||
175 | /** |
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176 | * @param string $shopDomain |
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177 | * @param string $redirectUrl |
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178 | * @return int |
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179 | */ |
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180 | public function getAuthorizeUrl($shopDomain, $redirectUrl) |
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188 | |||
189 | /** |
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190 | * @param string $shopDomain |
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191 | * @param string $code |
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192 | * @return string|bool |
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193 | */ |
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194 | public function getAccessToken($shopDomain, $code) |
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217 | |||
218 | /** |
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219 | * @param string $shopDomain |
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220 | * @return string|null |
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221 | */ |
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222 | public function setNonce($shopDomain) |
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226 | |||
227 | /** |
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228 | * @return string|null |
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229 | */ |
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230 | public function getNonce() |
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234 | |||
235 | /** |
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236 | * @param string $shopDomain |
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237 | * @return bool |
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238 | */ |
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239 | public function validDomain($shopDomain) |
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243 | |||
244 | /** |
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245 | * @return json |
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246 | */ |
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247 | public function getShopData() |
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251 | |||
252 | /** |
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253 | * @param array $query |
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254 | * @return bool |
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255 | */ |
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256 | public function validateHMAC($query) |
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277 | |||
278 | /** |
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279 | * @param string $url |
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280 | * @return string |
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281 | */ |
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282 | private function _urlEncode($url) |
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288 | |||
289 | /** |
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290 | * @return bool |
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291 | */ |
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292 | private function _isReady() |
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296 | } |
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297 |
This check marks property names that have not been written in camelCase.
In camelCase names are written without any punctuation, the start of each new word being marked by a capital letter. Thus the name database connection string becomes
databaseConnectionString
.