silverstripe /
silverstripe-framework
| Total Complexity | 51 |
| Total Lines | 316 |
| Duplicated Lines | 0 % |
| Changes | 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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| 27 | class EmbedShortcodeProvider implements ShortcodeHandler |
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| 28 | { |
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| 29 | |||
| 30 | /** |
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| 31 | * Gets the list of shortcodes provided by this handler |
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| 32 | * |
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| 33 | * @return mixed |
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| 34 | */ |
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| 35 | public static function get_shortcodes() |
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| 36 | { |
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| 37 | return ['embed']; |
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| 38 | } |
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| 39 | |||
| 40 | /** |
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| 41 | * Embed shortcode parser from Oembed. This is a temporary workaround. |
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| 42 | * Oembed class has been replaced with the Embed external service. |
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| 43 | * |
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| 44 | * @param array $arguments |
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| 45 | * @param string $content |
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| 46 | * @param ShortcodeParser $parser |
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| 47 | * @param string $shortcode |
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| 48 | * @param array $extra |
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| 49 | * |
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| 50 | * @return string |
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| 51 | */ |
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| 52 | public static function handle_shortcode($arguments, $content, $parser, $shortcode, $extra = []) |
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| 53 | { |
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| 54 | // Get service URL |
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| 55 | if (!empty($content)) { |
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| 56 | $serviceURL = $content; |
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| 57 | } elseif (!empty($arguments['url'])) { |
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| 58 | $serviceURL = $arguments['url']; |
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| 59 | } else { |
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| 60 | return ''; |
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| 61 | } |
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| 62 | |||
| 63 | $class = $arguments['class'] ?? ''; |
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| 64 | $width = $arguments['width'] ?? ''; |
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| 65 | $height = $arguments['height'] ?? ''; |
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| 66 | |||
| 67 | // Try to use cached result |
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| 68 | $cache = static::getCache(); |
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| 69 | $key = static::deriveCacheKey($serviceURL, $class, $width, $height); |
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| 70 | try { |
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| 71 | if ($cache->has($key)) { |
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| 72 | return $cache->get($key); |
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| 73 | } |
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| 74 | } catch (InvalidArgumentException $e) { |
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|
Coding Style
Comprehensibility
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| 75 | } |
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| 76 | |||
| 77 | // See https://github.com/oscarotero/Embed#example-with-all-options for service arguments |
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| 78 | $serviceArguments = []; |
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| 79 | if (!empty($arguments['width'])) { |
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| 80 | $serviceArguments['min_image_width'] = $arguments['width']; |
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| 81 | } |
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| 82 | if (!empty($arguments['height'])) { |
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| 83 | $serviceArguments['min_image_height'] = $arguments['height']; |
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| 84 | } |
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| 85 | |||
| 86 | /** @var EmbedContainer $embeddable */ |
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| 87 | $embeddable = Injector::inst()->create(Embeddable::class, $serviceURL); |
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| 88 | |||
| 89 | // Only EmbedContainer is currently supported |
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| 90 | if (!($embeddable instanceof EmbedContainer)) { |
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| 91 | throw new \RuntimeException('Emeddable must extend EmbedContainer'); |
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| 92 | } |
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| 93 | |||
| 94 | if (!empty($serviceArguments)) { |
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| 95 | $embeddable->setOptions(array_merge($serviceArguments, (array) $embeddable->getOptions())); |
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| 96 | } |
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| 97 | |||
| 98 | // Process embed |
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| 99 | try { |
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| 100 | // this will trigger a request/response which will then be cached within $embeddable |
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| 101 | $embeddable->getExtractor(); |
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| 102 | } catch (NetworkException | RequestException $e) { |
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| 103 | $message = (Director::isDev()) |
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| 104 | ? $e->getMessage() |
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| 105 | : _t(__CLASS__ . '.INVALID_URL', 'There was a problem loading the media.'); |
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| 106 | |||
| 107 | $attr = [ |
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| 108 | 'class' => 'ss-media-exception embed' |
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| 109 | ]; |
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| 110 | |||
| 111 | $result = HTML::createTag( |
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| 112 | 'div', |
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| 113 | $attr, |
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| 114 | HTML::createTag('p', [], $message) |
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| 115 | ); |
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| 116 | return $result; |
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| 117 | } |
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| 118 | |||
| 119 | // Convert embed object into HTML |
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| 120 | $html = static::embeddableToHtml($embeddable, $arguments); |
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| 121 | // Fallback to link to service |
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| 122 | if (!$html) { |
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| 123 | $result = static::linkEmbed($arguments, $serviceURL, $serviceURL); |
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| 124 | } |
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| 125 | // Cache result |
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| 126 | if ($html) { |
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| 127 | try { |
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| 128 | $cache->set($key, $html); |
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| 129 | } catch (InvalidArgumentException $e) { |
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| 130 | } |
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| 131 | } |
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| 132 | return $html; |
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| 133 | } |
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| 134 | |||
| 135 | public static function embeddableToHtml(Embeddable $embeddable, array $arguments): string |
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| 136 | { |
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| 137 | // Only EmbedContainer is supported |
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| 138 | if (!($embeddable instanceof EmbedContainer)) { |
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| 139 | return ''; |
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| 140 | } |
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| 141 | $extractor = $embeddable->getExtractor(); |
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| 142 | $type = $embeddable->getType(); |
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| 143 | if ($type === 'video' || $type === 'rich') { |
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| 144 | // Attempt to inherit width (but leave height auto) |
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| 145 | if (empty($arguments['width']) && $embeddable->getWidth()) { |
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| 146 | $arguments['width'] = $embeddable->getWidth(); |
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| 147 | } |
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| 148 | return static::videoEmbed($arguments, $extractor->code->html); |
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| 149 | } |
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| 150 | if ($type === 'photo') { |
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| 151 | return static::photoEmbed($arguments, (string) $extractor->url); |
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| 152 | } |
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| 153 | if ($type === 'link') { |
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| 154 | return static::linkEmbed($arguments, (string) $extractor->url, $extractor->title); |
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| 155 | } |
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| 156 | return ''; |
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| 157 | } |
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| 158 | |||
| 159 | /** |
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| 160 | * @param Adapter $embed |
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| 161 | * @param array $arguments Additional shortcode params |
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| 162 | * @return string |
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| 163 | * @deprecated 4.11..5.0 Use embeddableToHtml instead |
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| 164 | */ |
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| 165 | public static function embedForTemplate($embed, $arguments) |
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| 166 | { |
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| 167 | Deprecation::notice('4.11', 'Use embeddableToHtml() instead'); |
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| 168 | switch ($embed->getType()) { |
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| 169 | case 'video': |
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| 170 | case 'rich': |
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| 171 | // Attempt to inherit width (but leave height auto) |
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| 172 | if (empty($arguments['width']) && $embed->getWidth()) { |
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| 173 | $arguments['width'] = $embed->getWidth(); |
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| 174 | } |
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| 175 | return static::videoEmbed($arguments, $embed->getCode()); |
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| 176 | case 'link': |
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| 177 | return static::linkEmbed($arguments, $embed->getUrl(), $embed->getTitle()); |
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| 178 | case 'photo': |
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| 179 | return static::photoEmbed($arguments, $embed->getUrl()); |
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| 180 | default: |
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| 181 | return null; |
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| 182 | } |
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| 183 | } |
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| 184 | |||
| 185 | /** |
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| 186 | * Build video embed tag |
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| 187 | * |
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| 188 | * @param array $arguments |
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| 189 | * @param string $content Raw HTML content |
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| 190 | * @return string |
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| 191 | */ |
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| 192 | protected static function videoEmbed($arguments, $content) |
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| 193 | { |
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| 194 | // Ensure outer div has given width (but leave height auto) |
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| 195 | if (!empty($arguments['width'])) { |
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| 196 | $arguments['style'] = 'width: ' . intval($arguments['width']) . 'px;'; |
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| 197 | } |
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| 198 | |||
| 199 | // override iframe dimension attributes provided by webservice with ones specified in shortcode arguments |
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| 200 | foreach (['width', 'height'] as $attr) { |
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| 201 | if (!($value = $arguments[$attr] ?? false)) { |
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| 202 | continue; |
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| 203 | } |
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| 204 | foreach (['"', "'"] as $quote) { |
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| 205 | $rx = "/(<iframe .*?)$attr=$quote([0-9]+)$quote([^>]+>)/"; |
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| 206 | $content = preg_replace($rx, "$1{$attr}={$quote}{$value}{$quote}$3", $content); |
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| 207 | } |
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| 208 | } |
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| 209 | |||
| 210 | $data = [ |
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| 211 | 'Arguments' => $arguments, |
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| 212 | 'Attributes' => static::buildAttributeListFromArguments($arguments, ['width', 'height', 'url', 'caption']), |
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| 213 | 'Content' => DBField::create_field('HTMLFragment', $content) |
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| 214 | ]; |
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| 215 | |||
| 216 | return ArrayData::create($data)->renderWith(self::class . '_video')->forTemplate(); |
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| 217 | } |
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| 218 | |||
| 219 | /** |
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| 220 | * Build <a> embed tag |
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| 221 | * |
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| 222 | * @param array $arguments |
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| 223 | * @param string $href |
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| 224 | * @param string $title Default title |
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| 225 | * @return string |
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| 226 | */ |
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| 227 | protected static function linkEmbed($arguments, $href, $title) |
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| 228 | { |
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| 229 | $data = [ |
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| 230 | 'Arguments' => $arguments, |
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| 231 | 'Attributes' => static::buildAttributeListFromArguments($arguments, ['width', 'height', 'url', 'caption']), |
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| 232 | 'Href' => $href, |
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| 233 | 'Title' => !empty($arguments['caption']) ? ($arguments['caption']) : $title |
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| 234 | ]; |
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| 235 | |||
| 236 | return ArrayData::create($data)->renderWith(self::class . '_link')->forTemplate(); |
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| 237 | } |
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| 238 | |||
| 239 | /** |
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| 240 | * Build img embed tag |
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| 241 | * |
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| 242 | * @param array $arguments |
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| 243 | * @param string $src |
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| 244 | * @return string |
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| 245 | */ |
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| 246 | protected static function photoEmbed($arguments, $src) |
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| 247 | { |
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| 248 | $data = [ |
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| 249 | 'Arguments' => $arguments, |
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| 250 | 'Attributes' => static::buildAttributeListFromArguments($arguments, ['url']), |
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| 251 | 'Src' => $src |
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| 252 | ]; |
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| 253 | |||
| 254 | return ArrayData::create($data)->renderWith(self::class . '_photo')->forTemplate(); |
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| 255 | } |
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| 256 | |||
| 257 | /** |
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| 258 | * Build a list of HTML attributes from embed arguments - used to preserve backward compatibility |
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| 259 | * |
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| 260 | * @deprecated 4.5.0 Use {$Arguments.name} directly in shortcode templates to access argument values |
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| 261 | * @param array $arguments List of embed arguments |
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| 262 | * @param array $exclude List of attribute names to exclude from the resulting list |
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| 263 | * @return ArrayList |
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| 264 | */ |
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| 265 | private static function buildAttributeListFromArguments(array $arguments, array $exclude = []): ArrayList |
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| 266 | { |
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| 267 | $attributes = ArrayList::create(); |
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| 268 | foreach ($arguments as $key => $value) { |
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| 269 | if (in_array($key, $exclude)) { |
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| 270 | continue; |
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| 271 | } |
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| 272 | |||
| 273 | $attributes->push(ArrayData::create([ |
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| 274 | 'Name' => $key, |
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| 275 | 'Value' => Convert::raw2att($value) |
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| 276 | ])); |
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| 277 | } |
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| 278 | |||
| 279 | return $attributes; |
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| 280 | } |
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| 281 | |||
| 282 | /** |
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| 283 | * @param ShortcodeParser $parser |
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| 284 | * @param string $content |
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| 285 | */ |
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| 286 | public static function flushCachedShortcodes(ShortcodeParser $parser, string $content): void |
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| 309 | } |
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| 310 | } |
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| 311 | } |
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| 312 | |||
| 313 | /** |
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| 314 | * @return CacheInterface |
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| 315 | */ |
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| 316 | private static function getCache(): CacheInterface |
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| 317 | { |
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| 318 | return Injector::inst()->get(CacheInterface::class . '.EmbedShortcodeProvider'); |
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| 319 | } |
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| 320 | |||
| 321 | /** |
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| 322 | * @param string $url |
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| 323 | * @return string |
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| 324 | */ |
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| 325 | private static function deriveCacheKey(string $url, string $class, string $width, string $height): string |
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| 333 | ])); |
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| 334 | } |
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| 335 | |||
| 336 | /** |
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| 337 | * @param string $str |
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| 338 | * @return string |
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| 339 | */ |
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| 340 | private static function cleanKeySegment(string $str): string |
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| 343 | } |
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| 344 | } |
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| 345 |
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