Automattic /
jetpack
Complex classes like WordAds_Params 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 WordAds_Params, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 3 | class WordAds_Params { |
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| 4 | |||
| 5 | /** |
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| 6 | * Setup parameters for serving the ads |
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| 7 | * |
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| 8 | * @since 4.5.0 |
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| 9 | */ |
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| 10 | public function __construct() { |
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| 11 | // WordAds setting => default |
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| 12 | $settings = array( |
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| 13 | 'wordads_approved' => false, |
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| 14 | 'wordads_active' => false, |
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| 15 | 'wordads_house' => true, |
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| 16 | 'wordads_unsafe' => false, |
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| 17 | 'enable_header_ad' => true, |
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| 18 | 'wordads_second_belowpost' => true, |
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| 19 | 'wordads_display_front_page' => true, |
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| 20 | 'wordads_display_post' => true, |
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| 21 | 'wordads_display_page' => true, |
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| 22 | 'wordads_display_archive' => true, |
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| 23 | 'wordads_custom_adstxt' => '', |
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| 24 | ); |
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| 25 | |||
| 26 | // grab settings, or set as default if it doesn't exist |
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| 27 | $this->options = array(); |
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| 28 | foreach ( $settings as $setting => $default ) { |
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| 29 | $option = get_option( $setting, null ); |
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| 30 | |||
| 31 | if ( is_null( $option ) ) { |
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| 32 | update_option( $setting, $default, true ); |
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| 33 | $option = $default; |
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| 34 | } |
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| 35 | |||
| 36 | $this->options[ $setting ] = 'wordads_custom_adstxt' !== $setting ? (bool) $option : $option; |
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| 37 | } |
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| 38 | |||
| 39 | $host = 'localhost'; |
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| 40 | if ( isset( $_SERVER['HTTP_HOST'] ) ) { |
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| 41 | $host = $_SERVER['HTTP_HOST']; |
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| 42 | } |
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| 43 | |||
| 44 | $this->url = ( is_ssl() ? 'https' : 'http' ) . '://' . $host . $_SERVER['REQUEST_URI']; |
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| 45 | if ( ! ( false === strpos( $this->url, '?' ) ) && ! isset( $_GET['p'] ) ) { |
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| 46 | $this->url = substr( $this->url, 0, strpos( $this->url, '?' ) ); |
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| 47 | } |
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| 48 | |||
| 49 | $this->cloudflare = self::is_cloudflare(); |
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| 50 | $this->blog_id = Jetpack::get_option( 'id', 0 ); |
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| 51 | $this->mobile_device = jetpack_is_mobile( 'any', true ); |
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| 52 | $this->targeting_tags = array( |
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| 53 | 'WordAds' => 1, |
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| 54 | 'BlogId' => Jetpack::is_development_mode() ? 0 : Jetpack_Options::get_option( 'id' ), |
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| 55 | 'Domain' => esc_js( parse_url( home_url(), PHP_URL_HOST ) ), |
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| 56 | 'PageURL' => esc_js( $this->url ), |
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| 57 | 'LangId' => false !== strpos( get_bloginfo( 'language' ), 'en' ) ? 1 : 0, // TODO something else? |
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| 58 | 'AdSafe' => 1, // TODO |
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| 59 | ); |
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| 60 | } |
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| 61 | |||
| 62 | /** |
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| 63 | * @return boolean true if the user is browsing on a mobile device (iPad not included) |
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| 64 | * |
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| 65 | * @since 4.5.0 |
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| 66 | */ |
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| 67 | public function is_mobile() { |
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| 68 | return ! empty( $this->mobile_device ); |
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| 69 | } |
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| 70 | |||
| 71 | /** |
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| 72 | * @return boolean true if site is being served via CloudFlare |
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| 73 | * |
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| 74 | * @since 4.5.0 |
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| 75 | */ |
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| 76 | public static function is_cloudflare() { |
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| 77 | if ( |
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| 78 | defined( 'WORDADS_CLOUDFLARE' ) |
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| 79 | || isset( $_SERVER['HTTP_CF_CONNECTING_IP'] ) |
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| 80 | || isset( $_SERVER['HTTP_CF_IPCOUNTRY'] ) |
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| 81 | || isset( $_SERVER['HTTP_CF_VISITOR'] ) |
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| 82 | ) { |
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| 83 | return true; |
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| 84 | } |
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| 85 | |||
| 86 | return false; |
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| 87 | } |
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| 88 | |||
| 89 | /** |
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| 90 | * @return boolean true if user is browsing in iOS device |
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| 91 | * |
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| 92 | * @since 4.5.0 |
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| 93 | */ |
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| 94 | public function is_ios() { |
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| 95 | return in_array( $this->get_device(), array( 'ipad', 'iphone', 'ipod' ) ); |
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| 96 | } |
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| 97 | |||
| 98 | /** |
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| 99 | * Returns the user's device (see user-agent.php) or 'desktop' |
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| 100 | * |
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| 101 | * @return string user device |
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| 102 | * |
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| 103 | * @since 4.5.0 |
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| 104 | */ |
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| 105 | public function get_device() { |
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| 118 | |||
| 119 | /** |
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| 120 | * @return string The type of page that is being loaded |
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| 121 | * |
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| 122 | * @since 4.5.0 |
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| 123 | */ |
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| 124 | public function get_page_type() { |
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| 149 | |||
| 150 | /** |
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| 151 | * @return int The page type code for ipw config |
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| 152 | * |
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| 153 | * @since 5.6.0 |
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| 154 | */ |
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| 155 | public function get_page_type_ipw() { |
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| 178 | |||
| 179 | /** |
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| 180 | * Returns true if page is static home |
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| 181 | * |
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| 182 | * @return boolean true if page is static home |
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| 183 | * |
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| 184 | * @since 4.5.0 |
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| 185 | */ |
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| 186 | public static function is_static_home() { |
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| 191 | |||
| 192 | /** |
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| 193 | * Logic for if we should show an ad |
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| 194 | * |
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| 195 | * @since 4.5.0 |
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| 196 | */ |
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| 197 | public function should_show() { |
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| 226 | } |
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| 227 |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: