silverstripe /
silverstripe-framework
| Total Complexity | 46 |
| Total Lines | 280 |
| Duplicated Lines | 0 % |
| Changes | 2 | ||
| Bugs | 0 | Features | 0 |
Complex classes like EmbedShortcodeProvider 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.
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 EmbedShortcodeProvider, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 29 | class EmbedShortcodeProvider implements ShortcodeHandler |
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| 30 | { |
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| 31 | |||
| 32 | /** |
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| 33 | * Gets the list of shortcodes provided by this handler |
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| 34 | * |
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| 35 | * @return mixed |
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| 36 | */ |
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| 37 | public static function get_shortcodes() |
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| 38 | { |
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| 39 | return ['embed']; |
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| 40 | } |
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| 41 | |||
| 42 | /** |
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| 43 | * Embed shortcode parser from Oembed. This is a temporary workaround. |
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| 44 | * Oembed class has been replaced with the Embed external service. |
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| 45 | * |
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| 46 | * @param array $arguments |
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| 47 | * @param string $content |
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| 48 | * @param ShortcodeParser $parser |
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| 49 | * @param string $shortcode |
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| 50 | * @param array $extra |
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| 51 | * |
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| 52 | * @return string |
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| 53 | */ |
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| 54 | public static function handle_shortcode($arguments, $content, $parser, $shortcode, $extra = []) |
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| 55 | { |
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| 56 | // Get service URL |
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| 57 | if (!empty($content)) { |
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| 58 | $serviceURL = $content; |
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| 59 | } elseif (!empty($arguments['url'])) { |
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| 60 | $serviceURL = $arguments['url']; |
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| 61 | } else { |
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| 62 | return ''; |
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| 63 | } |
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| 64 | |||
| 65 | // Try to use cached result |
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| 66 | $cache = static::getCache(); |
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| 67 | $key = static::deriveCacheKey($serviceURL); |
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| 68 | try { |
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| 69 | if ($cache->has($key)) { |
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| 70 | return $cache->get($key); |
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| 71 | } |
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| 72 | } catch (InvalidArgumentException $e) { |
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|
Coding Style
Comprehensibility
introduced
by
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| 73 | } |
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| 74 | |||
| 75 | // See https://github.com/oscarotero/Embed#example-with-all-options for service arguments |
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| 76 | $serviceArguments = []; |
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| 77 | if (!empty($arguments['width'])) { |
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| 78 | $serviceArguments['min_image_width'] = $arguments['width']; |
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| 79 | } |
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| 80 | if (!empty($arguments['height'])) { |
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| 81 | $serviceArguments['min_image_height'] = $arguments['height']; |
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| 82 | } |
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| 83 | |||
| 84 | /** @var EmbedResource $embed */ |
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| 85 | $embed = Injector::inst()->create(Embeddable::class, $serviceURL); |
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| 86 | if (!empty($serviceArguments)) { |
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| 87 | $embed->setOptions(array_merge($serviceArguments, (array) $embed->getOptions())); |
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| 88 | } |
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| 89 | |||
| 90 | // Allow resolver to be mocked |
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| 91 | $dispatcher = null; |
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| 92 | if (isset($extra['resolver'])) { |
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| 93 | $dispatcher = Injector::inst()->create( |
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| 94 | $extra['resolver']['class'], |
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| 95 | $serviceURL, |
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| 96 | $extra['resolver']['config'] |
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| 97 | ); |
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| 98 | } elseif (Injector::inst()->has(DispatcherInterface::class)) { |
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| 99 | $dispatcher = Injector::inst()->get(DispatcherInterface::class); |
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| 100 | } |
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| 101 | |||
| 102 | if ($dispatcher) { |
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| 103 | $embed->setDispatcher($dispatcher); |
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| 104 | } |
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| 105 | |||
| 106 | // Process embed |
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| 107 | try { |
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| 108 | $embed = $embed->getEmbed(); |
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| 109 | } catch (InvalidUrlException $e) { |
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| 110 | $message = (Director::isDev()) |
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| 111 | ? $e->getMessage() |
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| 112 | : _t(__CLASS__ . '.INVALID_URL', 'There was a problem loading the media.'); |
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| 113 | |||
| 114 | $attr = [ |
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| 115 | 'class' => 'ss-media-exception embed' |
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| 116 | ]; |
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| 117 | |||
| 118 | $result = HTML::createTag( |
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| 119 | 'div', |
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| 120 | $attr, |
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| 121 | HTML::createTag('p', [], $message) |
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| 122 | ); |
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| 123 | return $result; |
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| 124 | } |
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| 125 | |||
| 126 | // Convert embed object into HTML |
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| 127 | if ($embed && $embed instanceof Adapter) { |
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| 128 | $result = static::embedForTemplate($embed, $arguments); |
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| 129 | } |
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| 130 | // Fallback to link to service |
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| 131 | if (!$result) { |
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| 132 | $result = static::linkEmbed($arguments, $serviceURL, $serviceURL); |
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| 133 | } |
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| 134 | // Cache result |
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| 135 | if ($result) { |
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| 136 | try { |
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| 137 | $cache->set($key, $result); |
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| 138 | } catch (InvalidArgumentException $e) { |
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| 139 | } |
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| 140 | } |
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| 141 | return $result; |
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| 142 | } |
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| 143 | |||
| 144 | /** |
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| 145 | * @param Adapter $embed |
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| 146 | * @param array $arguments Additional shortcode params |
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| 147 | * @return string |
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| 148 | */ |
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| 149 | public static function embedForTemplate($embed, $arguments) |
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| 150 | { |
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| 151 | switch ($embed->getType()) { |
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| 152 | case 'video': |
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| 153 | case 'rich': |
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| 154 | // Attempt to inherit width (but leave height auto) |
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| 155 | if (empty($arguments['width']) && $embed->getWidth()) { |
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| 156 | $arguments['width'] = $embed->getWidth(); |
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| 157 | } |
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| 158 | return static::videoEmbed($arguments, $embed->getCode()); |
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| 159 | case 'link': |
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| 160 | return static::linkEmbed($arguments, $embed->getUrl(), $embed->getTitle()); |
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| 161 | case 'photo': |
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| 162 | return static::photoEmbed($arguments, $embed->getUrl()); |
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| 163 | default: |
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| 164 | return null; |
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| 165 | } |
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| 166 | } |
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| 167 | |||
| 168 | /** |
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| 169 | * Build video embed tag |
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| 170 | * |
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| 171 | * @param array $arguments |
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| 172 | * @param string $content Raw HTML content |
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| 173 | * @return string |
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| 174 | */ |
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| 175 | protected static function videoEmbed($arguments, $content) |
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| 176 | { |
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| 177 | // Ensure outer div has given width (but leave height auto) |
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| 178 | if (!empty($arguments['width'])) { |
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| 179 | $arguments['style'] = 'width: ' . intval($arguments['width']) . 'px;'; |
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| 180 | } |
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| 181 | |||
| 182 | // override iframe dimension attributes provided by webservice with ones specified in shortcode arguments |
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| 183 | foreach (['width', 'height'] as $attr) { |
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| 184 | if (!($value = $arguments[$attr] ?? false)) { |
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| 185 | continue; |
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| 186 | } |
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| 187 | foreach (['"', "'"] as $quote) { |
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| 188 | $rx = "/(<iframe .*?)$attr=$quote([0-9]+)$quote([^>]+>)/"; |
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| 189 | $content = preg_replace($rx, "$1{$attr}={$quote}{$value}{$quote}$3", $content); |
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| 190 | } |
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| 191 | } |
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| 192 | |||
| 193 | $data = [ |
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| 194 | 'Arguments' => $arguments, |
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| 195 | 'Attributes' => static::buildAttributeListFromArguments($arguments, ['width', 'height', 'url', 'caption']), |
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| 196 | 'Content' => DBField::create_field('HTMLFragment', $content) |
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| 197 | ]; |
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| 198 | |||
| 199 | return ArrayData::create($data)->renderWith(self::class . '_video')->forTemplate(); |
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| 200 | } |
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| 201 | |||
| 202 | /** |
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| 203 | * Build <a> embed tag |
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| 204 | * |
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| 205 | * @param array $arguments |
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| 206 | * @param string $href |
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| 207 | * @param string $title Default title |
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| 208 | * @return string |
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| 209 | */ |
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| 210 | protected static function linkEmbed($arguments, $href, $title) |
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| 211 | { |
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| 212 | $data = [ |
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| 213 | 'Arguments' => $arguments, |
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| 214 | 'Attributes' => static::buildAttributeListFromArguments($arguments, ['width', 'height', 'url', 'caption']), |
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| 215 | 'Href' => $href, |
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| 216 | 'Title' => !empty($arguments['caption']) ? ($arguments['caption']) : $title |
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| 217 | ]; |
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| 218 | |||
| 219 | return ArrayData::create($data)->renderWith(self::class . '_link')->forTemplate(); |
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| 220 | } |
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| 221 | |||
| 222 | /** |
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| 223 | * Build img embed tag |
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| 224 | * |
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| 225 | * @param array $arguments |
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| 226 | * @param string $src |
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| 227 | * @return string |
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| 228 | */ |
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| 229 | protected static function photoEmbed($arguments, $src) |
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| 230 | { |
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| 231 | $data = [ |
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| 232 | 'Arguments' => $arguments, |
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| 233 | 'Attributes' => static::buildAttributeListFromArguments($arguments, ['url']), |
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| 234 | 'Src' => $src |
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| 235 | ]; |
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| 236 | |||
| 237 | return ArrayData::create($data)->renderWith(self::class . '_photo')->forTemplate(); |
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| 238 | } |
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| 239 | |||
| 240 | /** |
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| 241 | * Build a list of HTML attributes from embed arguments - used to preserve backward compatibility |
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| 242 | * |
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| 243 | * @deprecated 4.5.0 Use {$Arguments.name} directly in shortcode templates to access argument values |
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| 244 | * @param array $arguments List of embed arguments |
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| 245 | * @param array $exclude List of attribute names to exclude from the resulting list |
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| 246 | * @return ArrayList |
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| 247 | */ |
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| 248 | private static function buildAttributeListFromArguments(array $arguments, array $exclude = []): ArrayList |
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| 263 | } |
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| 264 | |||
| 265 | /** |
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| 266 | * @param ShortcodeParser $parser |
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| 267 | * @param string $content |
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| 268 | */ |
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| 269 | public static function flushCachedShortcodes(ShortcodeParser $parser, string $content): void |
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| 289 | } |
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| 290 | } |
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| 291 | } |
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| 292 | |||
| 293 | /** |
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| 294 | * @return CacheInterface |
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| 295 | */ |
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| 296 | private static function getCache(): CacheInterface |
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| 299 | } |
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| 300 | |||
| 301 | /** |
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| 302 | * @param string $url |
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| 303 | * @return string |
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| 304 | */ |
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| 305 | private static function deriveCacheKey(string $url): string |
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| 311 |
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