Total Complexity | 40 |
Total Lines | 317 |
Duplicated Lines | 0 % |
Changes | 2 | ||
Bugs | 0 | Features | 1 |
Complex classes like Embed 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 Embed, and based on these observations, apply Extract Interface, too.
1 | <?php |
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7 | class Embed |
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8 | { |
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9 | const TYPE_OEMBED = 0; |
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10 | |||
11 | const TYPE_REGEX = 1; |
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12 | |||
13 | /** |
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14 | * Type of an Embed object source data - OEmbed or Regex-based. |
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15 | */ |
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16 | protected int $type; |
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17 | |||
18 | /** |
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19 | * Array of global options applied to embed objects. |
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20 | */ |
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21 | protected array $options; |
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22 | |||
23 | /** |
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24 | * Original media URL. |
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25 | */ |
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26 | protected string $url; |
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27 | |||
28 | /** |
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29 | * Embed data extracted via OEmbed or Regex extractors. |
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30 | */ |
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31 | protected array $data; |
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32 | |||
33 | /** |
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34 | * Class containing Embed HTML code. |
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35 | */ |
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36 | protected HtmlBuilder $html; |
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37 | |||
38 | /** |
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39 | * Thumbnail data if available. |
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40 | */ |
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41 | protected ?array $thumbnail; |
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42 | |||
43 | /** |
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44 | * Creates Embed instance. |
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45 | */ |
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46 | public function __construct( |
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47 | string $type, |
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48 | string $url, |
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49 | array $data, |
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50 | array $options = [], |
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51 | bool $amp = false |
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52 | ) { |
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53 | $this->type = $type; |
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54 | $this->url = $url; |
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55 | $this->data = $data; |
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56 | $this->options = $options; |
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57 | $this->amp = $amp; |
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58 | |||
59 | $this->initData($data); |
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60 | } |
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61 | |||
62 | /** |
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63 | * Initializer for the Embed object filling thumbnail, html and type based |
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64 | * on a given media provider data. |
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65 | */ |
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66 | public function initData(array $data): self |
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67 | { |
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68 | if (isset($data['thumbnail_url'])) { |
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69 | $this->thumbnail = [ |
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70 | 'url' => $data['thumbnail_url'], |
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71 | 'width' => $data['thumbnail_width'] ?? null, |
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72 | 'height' => $data['thumbnail_height'] ?? null, |
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73 | ]; |
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74 | } |
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75 | |||
76 | if ($this->type == self::TYPE_OEMBED) { |
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77 | $this->html = $this->extractOEmbedHtml($data['html']); |
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78 | } else { |
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79 | $this->html = $this->extractRegexHtml($data['html']); |
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80 | } |
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81 | |||
82 | return $this; |
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83 | } |
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84 | |||
85 | /** |
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86 | * Returns mbed options. |
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87 | */ |
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88 | public function getOptions(): array |
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89 | { |
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90 | return $this->options; |
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91 | } |
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92 | |||
93 | /** |
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94 | * Sets new embed options. See config file 'options' key. |
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95 | */ |
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96 | public function setOptions(array $options): self |
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100 | } |
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101 | |||
102 | /** |
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103 | * Sets AMP mode. |
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104 | */ |
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105 | public function setAmp(bool $amp): self |
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106 | { |
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107 | $this->amp = $amp; |
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108 | return $this; |
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109 | } |
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110 | |||
111 | /** |
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112 | * Returns current HtmlBuilder instance. |
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113 | */ |
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114 | public function htmlBuilder(): HtmlBuilder |
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115 | { |
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116 | return $this->html; |
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117 | } |
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118 | |||
119 | /** |
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120 | * Returns string with HTML to embed in application. Will return AMP-friendly |
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121 | * HTML if global amp mode is enabled and not overwitten. |
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122 | */ |
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123 | public function html(array $options = null, ?bool $amp = null): string |
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124 | { |
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125 | if (is_null($options)) { |
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126 | $options = $this->options; |
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127 | } else { |
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128 | $options = array_merge($this->options, $options); |
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129 | } |
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130 | |||
131 | if (is_null($amp)) { |
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132 | $amp = $this->amp; |
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133 | } |
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134 | |||
135 | return $this->html->html($options, $amp); |
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136 | } |
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137 | |||
138 | /** |
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139 | * Returns string with AMP-friendly HTML to embed in an application. |
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140 | */ |
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141 | public function ampHtml(array $options = null): string |
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144 | } |
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145 | |||
146 | /** |
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147 | * Return script source if available in embed html. |
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148 | */ |
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149 | public function script(): ?string |
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150 | { |
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151 | return $this->html->script(); |
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152 | } |
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153 | |||
154 | /** |
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155 | * Returns embed provider type. |
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156 | */ |
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157 | public function type(): int |
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158 | { |
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159 | return $this->type; |
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160 | } |
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161 | |||
162 | /** |
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163 | * Returns embed html type. |
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164 | */ |
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165 | public function htmlType(): string |
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166 | { |
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167 | return $this->html->type(); |
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168 | } |
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169 | |||
170 | /** |
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171 | * Returns media provider data. |
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172 | */ |
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173 | public function url(): string |
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176 | } |
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177 | |||
178 | /** |
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179 | * Returns media provider data. |
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180 | */ |
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181 | public function data(): array |
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184 | } |
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185 | |||
186 | /** |
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187 | * Returns width of the embed. 0 if not set. |
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188 | */ |
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189 | public function width(): int |
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190 | { |
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191 | return $this->data['width'] ?? 0; |
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192 | } |
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193 | |||
194 | /** |
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195 | * Returns height of the embed. 0 if not set. |
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196 | */ |
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197 | public function height(): int |
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200 | } |
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201 | |||
202 | /** |
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203 | * Returns width/height ratio of the embed. 0 if dimensions are not set. |
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204 | */ |
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205 | public function ratio(): float |
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206 | { |
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207 | if (isset($this->data['width']) && isset($this->data['height'])) { |
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208 | return $this->data['width'] / $this->data['height']; |
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209 | } |
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210 | |||
211 | return 0; |
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212 | } |
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213 | |||
214 | /** |
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215 | * Returns string describing media type. According to OEmbed spec it could be: |
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216 | * one of these: photo, video, link, rich |
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217 | */ |
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218 | public function mediaType(): string |
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219 | { |
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220 | return $this->data['type']; |
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221 | } |
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222 | |||
223 | /** |
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224 | * Returns boolean flag telling if given embed data has a thumbnail. |
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225 | */ |
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226 | public function hasThumbnail(): bool |
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227 | { |
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228 | return is_array($this->thumbnail); |
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229 | } |
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230 | |||
231 | /** |
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232 | * Returns thumbnail data in an array form containing url and its dimensions. |
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233 | * |
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234 | */ |
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235 | public function thumbnail(): ?array |
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236 | { |
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237 | return $this->thumbnail; |
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238 | } |
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239 | |||
240 | /** |
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241 | * Reutrns string for thumbnail or null if it's not set. |
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242 | */ |
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243 | public function thumbnailUrl(): ?string |
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244 | { |
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245 | return $this->hasThumbnail() ? $this->thumbnail['url'] : null; |
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246 | } |
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247 | |||
248 | /** |
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249 | * Return thumbnail width or 0 if not set. |
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250 | */ |
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251 | public function thumbnailWidth(): int |
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252 | { |
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253 | return $this->hasThumbnail() ? $this->thumbnail['width'] : 0; |
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254 | } |
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255 | |||
256 | /** |
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257 | * Return thumbnail height or 0 if not set. |
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258 | */ |
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259 | public function thumbnailHeight(): int |
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260 | { |
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261 | return $this->hasThumbnail() ? $this->thumbnail['height'] : 0; |
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262 | } |
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263 | |||
264 | /** |
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265 | * Converts Embed instance into an array for caching. |
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266 | */ |
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267 | public function toArray(): array |
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268 | { |
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269 | return [ |
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270 | 'type' => $this->type, |
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271 | 'url' => $this->url, |
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272 | 'data' => $this->data, |
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273 | ]; |
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274 | } |
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275 | |||
276 | /** |
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277 | * Converts Embed instance into json string. |
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278 | */ |
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279 | public function toJson(): string |
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280 | { |
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281 | return json_encode($this->toArray()); |
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282 | } |
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283 | |||
284 | /** |
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285 | * Returns HtmlBuilder instance of OEmbed media provider HTML string. |
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286 | */ |
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287 | protected function extractOEmbedHtml(string $html): HtmlBuilder |
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288 | { |
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289 | $script = null; |
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290 | $doc = new DOMDocument(); |
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291 | $doc->loadHTML("<html><body>$html</body></html>", LIBXML_NOERROR); |
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292 | $body = $doc->documentElement->lastChild; |
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293 | |||
294 | $scripts = $body->getElementsByTagName('script'); |
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295 | foreach ($scripts as $node) { |
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296 | $script = $node->getAttribute('src'); |
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297 | break; |
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298 | } |
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299 | |||
300 | if (!$body->firstChild) { |
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301 | throw new HtmlParsingException(); |
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302 | } |
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303 | |||
304 | if ($body->firstChild && $body->firstChild->nodeName === 'iframe') { |
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305 | $attrs = []; |
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306 | |||
307 | foreach ($body->firstChild->attributes as $attribute) { |
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308 | $attrs[$attribute->name] = $attribute->value; |
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309 | } |
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310 | |||
311 | return new HtmlBuilder(HtmlBuilder::TYPE_IFRAME, $attrs, $script); |
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312 | } |
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313 | |||
314 | return new HtmlBuilder(HtmlBuilder::TYPE_RAW, $html, $script); |
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315 | } |
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316 | |||
317 | /** |
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318 | * Returns HtmlBuilder instance of Regex media provider HTML string. |
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319 | */ |
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320 | protected function extractRegexHtml(array $html): HtmlBuilder |
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324 | } |
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325 | } |
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326 |