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 AzineNotifierService 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 AzineNotifierService, and based on these observations, apply Extract Interface, too.
1 | <?php |
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15 | class AzineNotifierService implements NotifierServiceInterface |
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16 | { |
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17 | /** |
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18 | * Override this function to fill in any non-recipient-specific parameters that are required to |
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19 | * render the notifications-template or one of the notification-item-templates that |
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20 | * are rendered into the notifications-template |
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21 | * |
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22 | * @return array |
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23 | */ |
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24 | 3 | protected function getVarsForNotificationsEmail() |
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30 | |||
31 | /** |
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32 | * Override this function to fill in any recipient-specific parameters that are required to |
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33 | * render the notifications-template or one of the notification-item-templates that |
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34 | * are rendered into the notifications-template |
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35 | * |
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36 | * @param RecipientInterface $recipient |
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37 | * @return array |
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38 | */ |
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39 | 2 | protected function getRecipientVarsForNotificationsEmail(RecipientInterface $recipient) |
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47 | |||
48 | /** |
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49 | * Get the subject for the notifications-email to send. Override this function to implement your custom subject-lines. |
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50 | * @param array of array $contentItems |
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51 | * @param RecipientInterface $recipient |
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52 | * @return string |
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53 | */ |
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54 | 2 | public function getRecipientSpecificNotificationsSubject($contentItems, RecipientInterface $recipient) |
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67 | |||
68 | /** |
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69 | * Override this function to fill in any non-recipient-specific parameters that are required |
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70 | * to render the newsletter-template and are not provided by the TemplateProvider. e.g. the total number of recipients of this newsletter |
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71 | * |
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72 | * @return array |
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73 | */ |
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74 | 1 | protected function getGeneralVarsForNewsletter() |
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81 | |||
82 | /** |
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83 | * Override this function to fill in any non-recipient-specific content items that are the same |
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84 | * for all recipients of the newsletter. |
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85 | * |
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86 | * E.g. a list of featured events or news-articles. |
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87 | * |
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88 | * @return array of templatesIds (without ending) as key and params to render the template as value. => array('AzineEmailBundle:contentItem:message' => array('notification => $someNotification, 'goToUrl' => 'http://example.com', ...)); |
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89 | */ |
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90 | protected function getNonRecipientSpecificNewsletterContentItems() |
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91 | { |
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92 | // @codeCoverageIgnoreStart |
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93 | $contentItems = array(); |
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94 | |||
95 | //$contentItems[] = array('AcmeBundle:foo:barSameForAllRecipientsTemplate' => $templateParams); |
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96 | return $contentItems; |
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97 | // @codeCoverageIgnoreEnd |
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98 | } |
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99 | |||
100 | /** |
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101 | * Override this function to add more parameters that are required to render the newsletter template. |
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102 | * @param RecipientInterface $recipient |
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103 | * @return array |
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104 | */ |
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105 | 2 | public function getRecipientSpecificNewsletterParams(RecipientInterface $recipient) |
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109 | |||
110 | /** |
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111 | * Override this function to fill in any recipient-specific content items that are different |
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112 | * depending on the recipient of the newsletter. |
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113 | * |
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114 | * E.g. a list of the recipients latest activites. |
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115 | * |
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116 | * @param RecipientInterface $recipient |
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117 | * @return array of arrays with templatesIds (without ending) as key and params to render the template as value. |
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118 | * => array( |
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119 | * array('AzineEmailBundle:contentItem:message' => array('notification => $someNotification1, 'goToUrl' => 'http://example.com/1', ...)) |
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120 | * array('AzineEmailBundle:contentItem:message' => array('notification => $someNotification2, 'goToUrl' => 'http://example.com/2', ...)) |
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121 | * ); |
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122 | */ |
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123 | protected function getRecipientSpecificNewsletterContentItems(RecipientInterface $recipient) |
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124 | { |
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125 | // @codeCoverageIgnoreStart |
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126 | $contentItems = array(); |
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127 | |||
128 | //$contentItems[] = array('AcmeBundle:foo:barDifferentForEachRecipientTemplate' => $recipientSpecificTemplateParams); |
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129 | //$contentItems[] = array(AzineTemplateProvider::CONTENT_ITEM_MESSAGE_TEMPLATE => array('notification' => array('title' => 'SampleMessage', 'created' => new \DateTime('1 hour ago'), 'content' => 'Sample Text. Lorem Ipsum.'))); |
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130 | return $contentItems; |
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131 | // @codeCoverageIgnoreEnd |
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132 | } |
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133 | |||
134 | /** |
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135 | * Override this function to use a custom subject line for each newsletter-recipient. |
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136 | * |
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137 | * @param $generalContentItems array of content items. => e.g. array of array('templateID' => array('notification => $someNotification, 'goToUrl' => 'http://example.com', ...)) |
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138 | * @param $recipientContentItems array of content items. => e.g. array of array('templateID' => array('notification => $someNotification, 'goToUrl' => 'http://example.com', ...)) |
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139 | * @param $params array the array with all general template-params, including the item with the key 'subject' containing the default-subject |
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140 | * @param $recipient RecipientInterface |
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141 | * @param $locale string The language-code for translation of the subject |
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142 | * @return the subject line |
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143 | */ |
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144 | 1 | public function getRecipientSpecificNewsletterSubject(array $generalContentItems, array $recipientContentItems, array $params, RecipientInterface $recipient, $locale) |
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148 | |||
149 | /** |
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150 | * By overriding this function you can rearrange the content items to you liking. By default no ordering is done, so the order is as follows: |
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151 | * |
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152 | * - all user-specific content items as returned by AzineNotifierService::getRecipientSpecificNewsletterContentItems |
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153 | * - all non-user-specific content items as returned by AzineNotifierService::getNonRecipientSpecificNewsletterContentItems |
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154 | * |
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155 | * @param array $contentItems |
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156 | * @return array |
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157 | */ |
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158 | 2 | public function orderContentItems(array $contentItems){ |
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161 | |||
162 | /** |
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163 | * Over ride this constructor if you need to inject more dependencies to get all the data together that you need for your newsletter/notifications. |
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164 | * |
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165 | * @param TemplateTwigSwiftMailerInterface $mailer |
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166 | * @param \Twig_Environment $twig |
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167 | * @param UrlGeneratorInterface $router |
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168 | * @param ManagerRegistry $managerRegistry |
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169 | * @param TemplateProviderInterface $templateProvider |
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170 | * @param RecipientProviderInterface $recipientProvider |
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171 | * @param Translator $translatorService |
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172 | * @param array $parameters |
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173 | */ |
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174 | 8 | public function __construct(TemplateTwigSwiftMailerInterface $mailer, \Twig_Environment $twig, UrlGeneratorInterface $router, |
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187 | |||
188 | ////////////////////////////////////////////////////////////////////////// |
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189 | /* You probably don't need to change or override any of the stuff below */ |
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190 | ////////////////////////////////////////////////////////////////////////// |
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191 | |||
192 | const CONTENT_ITEMS = 'contentItems'; |
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193 | /** |
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194 | * @var TemplateTwigSwiftMailerInterface |
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195 | */ |
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196 | protected $mailer; |
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197 | |||
198 | /** |
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199 | * @var \Twig_Environment |
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200 | */ |
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201 | protected $twig; |
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202 | |||
203 | /** |
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204 | * @var UrlGeneratorInterface |
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205 | */ |
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206 | protected $router; |
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207 | |||
208 | /** |
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209 | * @var TemplateProviderInterface |
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210 | */ |
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211 | protected $templateProvider; |
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212 | |||
213 | /** |
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214 | * @var RecipientProviderInterface |
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215 | */ |
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216 | protected $recipientProvider; |
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217 | |||
218 | /** |
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219 | * @var ManagerRegistry |
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220 | */ |
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221 | protected $managerRegistry; |
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222 | |||
223 | /** |
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224 | * Array of configuration-parameters from the config.yml |
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225 | * @var array |
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226 | */ |
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227 | protected $configParameter; |
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228 | |||
229 | /** |
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230 | * The translator |
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231 | * @var Translator |
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232 | */ |
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233 | protected $translatorService; |
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234 | |||
235 | /** |
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236 | * Get the number of seconds in a "one-hour-interval" |
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237 | * @return integer of seconds to consider as an hour. |
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238 | */ |
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239 | 4 | protected function getHourInterval() |
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247 | |||
248 | /** |
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249 | * Get the number of seconds in a "one-day-interval" |
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250 | * @return integer of seconds to consider as a day. |
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251 | */ |
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252 | 3 | protected function getDayInterval() |
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260 | |||
261 | /** |
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262 | * (non-PHPdoc) |
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263 | * @see Azine\EmailBundle\Services.NotifierServiceInterface::sendNotifications() |
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264 | */ |
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265 | 3 | public function sendNotifications(array &$failedAddresses) |
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266 | { |
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267 | // get all recipientIds with pending notifications in the database, that are due to be sent |
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268 | 3 | $recipientIds = $this->getNotificationRecipientIds(); |
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269 | |||
270 | // get vars that are the same for all recipients of this notification-mail-batch |
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271 | 3 | $params = $this->getVarsForNotificationsEmail(); |
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272 | |||
273 | 3 | $notificationsTemplate = $this->configParameter[AzineEmailExtension::TEMPLATES."_".AzineEmailExtension::NOTIFICATIONS_TEMPLATE]; |
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274 | |||
275 | 3 | $sentCount = 0; |
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276 | 3 | View Code Duplication | foreach ($recipientIds as $recipientId) { |
277 | |||
278 | // send the mail for this recipient |
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279 | 3 | $failedAddress = $this->sendNotificationsFor($recipientId, $notificationsTemplate, $params); |
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280 | 3 | if ($failedAddress !== null && strlen($failedAddress) > 0) { |
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281 | 2 | $failedAddresses[] = $failedAddress; |
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282 | 2 | } else { |
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283 | 3 | $sentCount++; |
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284 | } |
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285 | 3 | } |
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286 | |||
287 | 3 | return $sentCount; |
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288 | } |
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289 | |||
290 | /** |
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291 | * Send the notifications-email for one recipient |
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292 | * @param integer $recipientId |
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293 | * @param string $wrapperTemplateName |
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294 | * @param array $params array of parameters for this recipient |
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295 | * @return null|string or the failed email addressess |
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296 | */ |
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297 | 3 | public function sendNotificationsFor($recipientId, $wrapperTemplateName, $params) |
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346 | |||
347 | /** |
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348 | * (non-PHPdoc) |
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349 | * @see Azine\EmailBundle\Services.NotifierServiceInterface::sendNewsletter() |
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350 | */ |
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351 | 2 | public function sendNewsletter(array &$failedAddresses) |
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352 | { |
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353 | // params array for all recipients |
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354 | 2 | $params = array(); |
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355 | |||
356 | // set a default subject |
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357 | 2 | $params['subject'] = $this->translatorService->trans("_az.email.newsletter.subject"); |
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358 | |||
359 | // get the the non-recipient-specific contentItems of the newsletter |
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360 | 2 | $params[self::CONTENT_ITEMS] = $this->getNonRecipientSpecificNewsletterContentItems(); |
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361 | |||
362 | // get recipientIds for the newsletter |
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363 | 2 | $recipientIds = $this->recipientProvider->getNewsletterRecipientIDs(); |
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364 | |||
365 | 2 | $newsletterTemplate = $this->configParameter[AzineEmailExtension::TEMPLATES."_".AzineEmailExtension::NEWSLETTER_TEMPLATE]; |
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366 | |||
367 | 2 | View Code Duplication | foreach ($recipientIds as $recipientId) { |
368 | 2 | $failedAddress = $this->sendNewsletterFor($recipientId, $params, $newsletterTemplate); |
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369 | |||
370 | 2 | if ($failedAddress !== null && strlen($failedAddress) > 0) { |
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371 | 2 | $failedAddresses[] = $failedAddress; |
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372 | 2 | } |
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373 | 2 | } |
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374 | |||
375 | 2 | return sizeof($recipientIds) - sizeof($failedAddresses); |
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376 | } |
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377 | |||
378 | /** |
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379 | * Send the newsletter for one recipient |
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380 | * @param integer $recipientId |
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381 | * @param array $params params and contentItems that are the same for all recipients |
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382 | * @param string $wrapperTemplate |
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383 | * @return string|null or the failed email addressess |
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384 | */ |
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385 | 2 | public function sendNewsletterFor($recipientId, array $params, $wrapperTemplate) |
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417 | |||
418 | /** |
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419 | * Get the Notifications that have not yet been sent yet. |
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420 | * Ordered by "template" and "title". |
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421 | * @param RecipientInterface $recipient |
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422 | * @return array of Notification |
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423 | */ |
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424 | 3 | protected function getNotificationsFor(RecipientInterface $recipient) |
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461 | |||
462 | /** |
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463 | * Get all IDs for Recipients of pending notifications |
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464 | * @return array of IDs |
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465 | */ |
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466 | 3 | protected function getNotificationRecipientIds() |
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470 | |||
471 | /** |
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472 | * Update (set sent = now) and save the notifications |
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473 | * @param array $notifications |
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474 | */ |
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475 | 2 | protected function setNotificationsAsSent(array $notifications) |
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483 | |||
484 | /** |
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485 | * Mark all Notifications as sent long ago, as the recipient never want's to get any notifications. |
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486 | * @param RecipientInterface $recipient |
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487 | */ |
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488 | 1 | protected function markAllNotificationsAsSentFarInThePast(RecipientInterface $recipient) |
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492 | |||
493 | /** |
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494 | * Get the interval in days between newsletter mailings |
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495 | */ |
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496 | 1 | protected function getNewsletterInterval() |
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500 | |||
501 | /** |
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502 | * Get the time of the day when the newsletter should be sent. |
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503 | * @return string Time of the day in the format HH:mm |
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504 | */ |
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505 | 1 | protected function getNewsletterSendTime() |
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509 | |||
510 | /** |
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511 | * Get the DateTime at which the last newsletter mailing probably has taken place, if a newsletter is sent today. |
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512 | * (Calculated: send-time-today - interval in days) |
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513 | * @return \DateTime |
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514 | */ |
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515 | 1 | protected function getDateTimeOfLastNewsletter() |
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519 | |||
520 | /** |
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521 | * Get the DateTime at which the next newsletter mailing will take place, if a newsletter is sent today. |
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522 | * (Calculated: send-time-today + interval in days) |
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523 | */ |
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524 | 1 | protected function getDateTimeOfNextNewsletter() |
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528 | |||
529 | /** |
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530 | * Convenience-function to add and save a Notification-entity |
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531 | * |
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532 | * @param integer $recipientId the ID of the recipient of this notification => see RecipientProvider.getRecipient($id) |
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533 | * @param string $title the title of the notification. depending on the recipients settings, multiple notifications are sent in one email. |
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534 | * @param string $content the content of the notification |
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535 | * @param string $template the twig-template to render the notification with |
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536 | * @param array $templateVars the parameters used in the twig-template, 'notification' => Notification and 'recipient' => RecipientInterface will be added to this array when rendering the twig-template. |
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537 | * @param integer $importance important messages are at the top of the notification-emails, un-important at the bottom. |
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538 | * @param boolean $sendImmediately whether or not to ignore the recipients mailing-preference and send the notification a.s.a.p. |
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539 | * @return Notification |
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540 | */ |
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541 | 2 | public function addNotification($recipientId, $title, $content, $template, $templateVars, $importance, $sendImmediately) |
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556 | |||
557 | /** |
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558 | * Convenience-function to add and save a Notification-entity for a message => see AzineTemplateProvider::CONTENT_ITEM_MESSAGE_TYPE |
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559 | * |
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560 | * The following default are used: |
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561 | * $importance = NORMAL |
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562 | * $sendImmediately = fale |
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563 | * $template = template for type AzineTemplateProvider::CONTENT_ITEM_MESSAGE_TYPE |
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564 | * $templateVars = only those from the template-provider |
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565 | * |
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566 | * @param integer $recipientId |
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567 | * @param string $title |
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568 | * @param string $content nl2br will be applied in the html-version of the email |
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569 | * @param string $goToUrl if this is supplied, a link "Go to message" will be added. |
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570 | */ |
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571 | 1 | public function addNotificationMessage($recipientId, $title, $content, $goToUrl = null) |
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580 | |||
581 | |||
582 | /** |
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583 | * @return NotificationRepository |
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584 | */ |
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585 | 4 | protected function getNotificationRepository(){ |
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588 | |||
589 | } |
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590 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.