samwilson /
simple-wikidata
| Total Complexity | 64 |
| Total Lines | 421 |
| Duplicated Lines | 12.83 % |
| Coverage | 25.37% |
| Changes | 0 | ||
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 Item 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 Item, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 14 | class Item { |
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| 15 | |||
| 16 | const PROP_INSTANCE_OF = 'P31'; |
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| 17 | const PROP_TITLE = 'P1476'; |
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| 18 | const PROP_IMAGE = 'P18'; |
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| 19 | const PROP_AUTHOR = 'P50'; |
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| 20 | |||
| 21 | /** @var string */ |
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| 22 | protected $id; |
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| 23 | |||
| 24 | /** @var MediawikiApi */ |
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| 25 | protected $wdApi; |
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| 26 | |||
| 27 | /** @var string */ |
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| 28 | protected $lang; |
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| 29 | |||
| 30 | /** @var CacheItemPoolInterface */ |
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| 31 | protected $cache; |
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| 32 | |||
| 33 | /** @var string The base URL of Wikidata, with trailing slash. */ |
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| 34 | protected $wikidataUrlBase = 'https://www.wikidata.org/wiki/'; |
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| 35 | |||
| 36 | 1 | private function __construct( $id, $lang, CacheItemPoolInterface $cache ) { |
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| 37 | 1 | if ( !is_string( $id ) || preg_match( '/[QP][0-9]*/i', $id ) !== 1 ) { |
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| 38 | throw new Exception( "Not a valid ID: " . var_export( $id, true ) ); |
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| 39 | } |
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| 40 | 1 | $this->id = $id; |
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| 41 | 1 | $this->wdApi = new MediawikiApi( 'https://www.wikidata.org/w/api.php' ); |
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| 42 | 1 | $this->entities = []; |
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| 43 | 1 | $this->lang = $lang; |
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| 44 | 1 | $this->cache = $cache; |
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| 45 | 1 | } |
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| 46 | |||
| 47 | /** |
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| 48 | * Create a new Item object with class based on the item's 'instance of' statement. |
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| 49 | * |
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| 50 | * @param string $id |
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| 51 | * @param string $lang |
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| 52 | * |
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| 53 | * @return Item |
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| 54 | */ |
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| 55 | 1 | public static function factory( $id, $lang, CacheItemPoolInterface $cache ) { |
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| 56 | 1 | $item = new Item( $id, $lang, $cache ); |
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| 57 | 1 | foreach ( $item->getPropertyOfTypeItem( self::PROP_INSTANCE_OF ) as $instanceOf ) { |
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| 58 | // Try to find a class mating the 'instance of' name. |
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| 59 | 1 | $possibleClassName = __NAMESPACE__ . '\\Items\\' . Str::toCamelCase( $instanceOf->getItem()->getLabel() ); |
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| 60 | 1 | if ( class_exists( $possibleClassName ) ) { |
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| 61 | // This won't re-request the metadata, because that's cached. |
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| 62 | $specificItem = new $possibleClassName( $id, $lang, $cache ); |
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| 63 | 1 | return $specificItem; |
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| 64 | } |
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| 65 | } |
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| 66 | |||
| 67 | // If we're here, just leave it as a basic Item. |
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| 68 | 1 | $item->setCache( $cache ); |
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| 69 | 1 | return $item; |
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| 70 | } |
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| 71 | |||
| 72 | 1 | public function setCache( CacheItemPoolInterface $cache_item_pool ) { |
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| 73 | 1 | $this->cache = $cache_item_pool; |
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| 74 | 1 | } |
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| 75 | |||
| 76 | /** |
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| 77 | * Get the ID (Q-number) of this item. |
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| 78 | * @return string|bool The ID or false if it couldn't be determined. |
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| 79 | */ |
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| 80 | 1 | public function getId() { |
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| 81 | 1 | $entity = $this->getEntity( $this->id ); |
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| 82 | 1 | return isset( $entity['id'] ) ? $entity['id'] : false; |
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| 83 | } |
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| 84 | |||
| 85 | /** |
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| 86 | * Get this item's label. |
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| 87 | * @return string |
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| 88 | */ |
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| 89 | 1 | public function getLabel() { |
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| 90 | 1 | $entity = $this->getEntity( $this->id ); |
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| 91 | 1 | if ( ! empty( $entity['labels'][ $this->lang ]['value'] ) ) { |
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| 92 | // Use the label if there is one. |
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| 93 | 1 | return $entity['labels'][ $this->lang ]['value']; |
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| 94 | } |
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| 95 | // Or just use the ID. |
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| 96 | 1 | return $entity['id']; |
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| 97 | } |
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| 98 | |||
| 99 | 1 | public function getWikidataUrl() { |
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| 100 | 1 | return $this->wikidataUrlBase.$this->id; |
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| 101 | } |
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| 102 | |||
| 103 | public function getStandardProperties( $type = 'work' ) { |
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| 104 | if ( $type !== 'work' ) { |
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| 105 | $type = 'edition'; |
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| 106 | } |
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| 107 | $cacheKey = $type . '_item_property_IDs'; |
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| 108 | if ( $this->cache->hasItem( $cacheKey ) ) { |
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| 109 | $propIds = $this->cache->getItem( $cacheKey )->get(); |
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| 110 | } else { |
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| 111 | $domCrawler = new Crawler(); |
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| 112 | $domCrawler->addHtmlContent( file_get_contents( 'https://www.wikidata.org/wiki/Wikidata:WikiProject_Books' ) ); |
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| 113 | $propCells = $domCrawler->filterXPath( "//h3/span[@id='" . ucfirst( $type ) . "_item_properties']/../following-sibling::table[1]//td[2]/a" ); |
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| 114 | $propIds = []; |
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| 115 | $propCells->each( function ( Crawler $node, $i ) use ( &$propIds ) { |
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| 116 | $propId = $node->text(); |
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| 117 | $propIds[] = $propId; |
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| 118 | } ); |
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| 119 | $cacheItem = $this->cache->getItem( $cacheKey ) |
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| 120 | ->expiresAfter( new DateInterval( 'PT1H' ) ) |
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| 121 | ->set( $propIds ); |
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| 122 | $this->cache->save( $cacheItem ); |
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| 123 | } |
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| 124 | $workProperties = []; |
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| 125 | foreach ( $propIds as $propId ) { |
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| 126 | $workProperties[] = self::factory( $propId, $this->lang, $this->cache ); |
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| 127 | } |
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| 128 | |||
| 129 | return $workProperties; |
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| 130 | } |
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| 131 | |||
| 132 | /** |
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| 133 | * @param string $propertyId |
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| 134 | * @return bool|Time[] |
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| 135 | */ |
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| 136 | View Code Duplication | protected function getPropertyOfTypeTime( $propertyId ) { |
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| 137 | $times = []; |
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| 138 | $entity = $this->getEntity(); |
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| 139 | if ( !isset( $entity['claims'][$propertyId] ) ) { |
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| 140 | // No statements for this property. |
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| 141 | return $times; |
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| 142 | } |
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| 143 | // print_r($entity['claims'][$propertyId]);exit(); |
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| 144 | foreach ( $entity['claims'][$propertyId] as $claim ) { |
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| 145 | // print_r($claim); |
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| 146 | $times[] = new Time( $claim, $this->lang, $this->cache ); |
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| 147 | // |
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| 148 | // $timeValue = $claim['datavalue']['value']['time']; |
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| 149 | // // Ugly workaround for imprecise dates. :-( |
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| 150 | // if (preg_match('/([0-9]{1,4})-00-00/', $timeValue, $matches) === 1) { |
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| 151 | // $timeValue = $matches[1]; |
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| 152 | // return $timeValue; |
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| 153 | // } |
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| 154 | // $time = strtotime($timeValue); |
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| 155 | // return date($dateFormat, $time); |
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| 156 | // } |
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| 157 | } |
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| 158 | return $times; |
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| 159 | } |
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| 160 | |||
| 161 | /** |
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| 162 | * Get the Item that is referred to by the specified item's property. |
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| 163 | * |
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| 164 | * @param string $itemId |
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| 165 | * @param string $propertyId |
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| 166 | * |
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| 167 | * @return \Samwilson\SimpleWikidata\Properties\Item[] |
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| 168 | */ |
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| 169 | 1 | View Code Duplication | protected function getPropertyOfTypeItem( $propertyId ) { |
| 170 | 1 | $entity = $this->getEntity( $this->id ); |
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| 171 | 1 | if ( !isset( $entity['claims'][$propertyId] ) ) { |
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| 172 | 1 | return []; |
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| 173 | } |
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| 174 | 1 | $items = []; |
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| 175 | 1 | foreach ( $entity['claims'][$propertyId] as $claim ) { |
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| 176 | 1 | $items[] = new Properties\Item( $claim, $this->lang, $this->cache ); |
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| 177 | } |
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| 178 | |||
| 179 | 1 | return $items; |
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| 180 | } |
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| 181 | |||
| 182 | public function setPropertyOfTypeItem( $property, $itemId ) { |
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| 183 | $itemIdNumeric = substr( $itemId, 1 ); |
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| 184 | |||
| 185 | // First see if this property already exists, and that it is different from what's being set. |
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| 186 | $entity = $this->getEntity( $this->id ); |
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| 187 | if ( !empty( $entity['claims'][$property] ) ) { |
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| 188 | // Get the first claim, and update it if necessary. |
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| 189 | $claim = array_shift( $entity['claims'][$property] ); |
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| 190 | if ( $claim['mainsnak']['datavalue']['value']['id'] == $itemId ) { |
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| 191 | // Already is the required value, no need to change. |
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| 192 | return; |
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| 193 | } |
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| 194 | $claim['mainsnak']['datavalue']['value']['id'] = $itemId; |
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| 195 | $claim['mainsnak']['datavalue']['value']['numeric-id'] = $itemIdNumeric; |
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| 196 | $apiParams = [ |
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| 197 | 'action' => 'wbsetclaim', |
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| 198 | 'claim' => wp_json_encode( $claim ), |
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| 199 | ]; |
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| 200 | } |
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| 201 | |||
| 202 | // If no claim was found (and modified) above, create a new claim. |
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| 203 | View Code Duplication | if ( !isset( $apiParams ) ) { |
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| 204 | $apiParams = [ |
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| 205 | 'action' => 'wbcreateclaim', |
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| 206 | 'entity' => $this->getId(), |
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| 207 | 'property' => $property, |
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| 208 | 'snaktype' => 'value', |
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| 209 | 'value' => wp_json_encode( [ 'entity-type' => 'item', 'numeric-id' => $itemIdNumeric ] ), |
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| 210 | ]; |
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| 211 | } |
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| 212 | |||
| 213 | // Save the property. |
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| 214 | $wdWpOauth = new WdWpOauth(); |
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| 215 | $wdWpOauth->makeCall( $apiParams, true ); |
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| 216 | |||
| 217 | // Clear the cache. |
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| 218 | $this->cache->deleteItem( $this->getEntityCacheKey( $this->id ) ); |
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| 219 | } |
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| 220 | |||
| 221 | public function getPropertyOfTypeUrl( $entityId, $propertyId ) { |
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| 232 | } |
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| 233 | |||
| 234 | public function getPropertyOfTypeExternalIdentifier( $entityId, $propertyId ) { |
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| 262 | } |
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| 263 | |||
| 264 | /** |
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| 265 | * Get a single-valued text property. |
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| 266 | * @param string $property One of the PROP_* constants. |
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| 267 | * @return string|bool The value, or false if it can't be found. |
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| 268 | */ |
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| 269 | public function getPropertyOfTypeText( $property ) { |
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| 270 | $entity = $this->getEntity( $this->id ); |
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| 271 | if ( isset( $entity['claims'][$property] ) ) { |
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| 272 | // Use the first title. |
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| 273 | foreach ( $entity['claims'][$property] as $t ) { |
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| 274 | if ( !isset( $t['mainsnak']['datavalue']['value']['language'] ) ) { |
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| 275 | var_dump( $t['mainsnak']['datavalue']['value'] ); |
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| 276 | exit(); |
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| 277 | } |
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| 278 | if ( $t['mainsnak']['datavalue']['value']['language'] == $this->lang |
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| 279 | && !empty( $t['mainsnak']['datavalue']['value']['text'] ) |
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| 280 | ) { |
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| 281 | return $t['mainsnak']['datavalue']['value']['text']; |
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| 282 | } |
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| 283 | } |
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| 284 | } |
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| 285 | return false; |
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| 286 | } |
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| 287 | |||
| 288 | /** |
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| 289 | * Literal data field for a quantity that relates to some kind of well-defined unit. The actual unit goes in the data values that is entered. |
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| 290 | * - amount – implicit part of the string (mapping of unit prefix is unclear) |
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| 291 | * - unit – implicit part of the string that defaults to "1" (mapping to standardizing body is unclear) |
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| 292 | * - upperbound - quantity's upper bound |
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| 293 | * - lowerbound - quantity's lower bound |
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| 294 | * @param $property |
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| 295 | * @return mixed[]|bool If it's not false it's an array with 'amount', 'unit', etc. |
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| 296 | */ |
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| 297 | public function getPropertyOfTypeQuantity( $property ) { |
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| 298 | $quantities = []; |
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| 299 | $entity = $this->getEntity( $this->id ); |
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| 300 | if ( !isset( $entity['claims'][$property] ) ) { |
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| 301 | return false; |
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| 302 | } |
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| 303 | foreach ( $entity['claims'][$property] as $t ) { |
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| 304 | $quantity = $t['mainsnak']['datavalue']['value']; |
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| 305 | $unitId = substr( $quantity['unit'], strlen( $this->wikidataUrlBase ) + 1 ); |
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| 306 | $quantity['unit'] = self::factory( $unitId, $this->lang, $this->cache ); |
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| 307 | $quantities[] = $quantity; |
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| 308 | } |
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| 309 | return $quantities; |
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| 310 | } |
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| 311 | |||
| 312 | /** |
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| 313 | * Set a single-valued text property. |
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| 314 | * @param string $property One of the PROP_* constants. |
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| 315 | * @param string $value The value. |
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| 316 | */ |
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| 317 | public function setPropertyOfTypeText( $property, $value ) { |
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| 318 | // First see if this property already exists, and that it is different from what's being set. |
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| 319 | $entity = $this->getEntity( $this->id ); |
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| 320 | if ( !empty( $entity['claims'][$property] ) ) { |
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| 321 | // Find this language's claim (if there is one). |
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| 322 | foreach ( $entity['claims'][$property] as $claim ) { |
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| 323 | if ( $claim['mainsnak']['datavalue']['value']['language'] == $this->lang ) { |
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| 324 | // Modify this claim's text value. |
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| 325 | $titleClaim = $claim; |
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| 326 | $titleClaim['mainsnak']['datavalue']['value']['text'] = $value; |
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| 327 | $setTitleParams = [ |
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| 328 | 'action' => 'wbsetclaim', |
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| 329 | 'claim' => \GuzzleHttp\json_encode( $titleClaim ), |
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| 330 | ]; |
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| 331 | continue; |
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| 332 | } |
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| 333 | } |
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| 334 | } |
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| 335 | |||
| 336 | // If no claim was found (and modified) above, create a new claim. |
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| 337 | View Code Duplication | if ( !isset( $setTitleParams ) ) { |
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| 338 | $setTitleParams = [ |
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| 339 | 'action' => 'wbcreateclaim', |
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| 340 | 'entity' => $this->getId(), |
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| 341 | 'property' => $property, |
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| 342 | 'snaktype' => 'value', |
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| 343 | 'value' => \GuzzleHttp\json_encode( [ 'text' => $value, 'language' => $this->lang ] ), |
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| 344 | ]; |
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| 345 | } |
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| 346 | |||
| 347 | // Save the property. |
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| 348 | $wdWpOauth = new WdWpOauth(); |
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| 349 | $wdWpOauth->makeCall( $setTitleParams, true ); |
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| 350 | |||
| 351 | // Clear the cache. |
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| 352 | $this->cache->deleteItem( $this->getEntityCacheKey( $this->id ) ); |
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| 353 | } |
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| 354 | |||
| 355 | public function getInstanceOf() { |
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| 356 | $instancesOf = $this->getPropertyOfTypeItem( $this->getId(), self::PROP_INSTANCE_OF ); |
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| 357 | return array_shift( $instancesOf ); |
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| 358 | } |
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| 359 | |||
| 360 | /** |
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| 361 | * Does this item exist? |
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| 362 | * @return bool |
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| 363 | */ |
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| 364 | public function exists() { |
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| 365 | return $this->getId() !== false; |
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| 366 | } |
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| 367 | |||
| 368 | public function getWikipediaIntro() { |
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| 401 | } |
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| 402 | |||
| 403 | /** |
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| 404 | * Get the raw entity data from the 'wbgetentities' API call. |
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| 405 | * @param string $id |
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| 406 | * @param bool $ignoreCache |
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| 407 | * @return bool |
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| 408 | */ |
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| 409 | 1 | public function getEntity( $id = null, $ignoreCache = false ) { |
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| 410 | 1 | $idActual = $id ?: $this->id; |
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| 411 | 1 | $cacheKey = $this->getEntityCacheKey( $idActual ); |
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| 412 | 1 | if ( !$ignoreCache && $this->cache->hasItem( $cacheKey ) ) { |
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| 413 | return $this->cache->getItem( $cacheKey )->get(); |
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| 414 | } |
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| 415 | 1 | $metadataRequest = new SimpleRequest( 'wbgetentities', [ 'ids' => $idActual ] ); |
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| 416 | 1 | $itemResult = $this->wdApi->getRequest( $metadataRequest ); |
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| 417 | 1 | if ( !isset( $itemResult['success'] ) || !isset( $itemResult['entities'][$id] ) ) { |
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| 418 | return false; |
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| 419 | } |
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| 420 | 1 | $metadata = $itemResult['entities'][$idActual]; |
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| 421 | 1 | $cacheItem = $this->cache->getItem( $cacheKey ) |
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| 422 | 1 | ->expiresAfter( new DateInterval( 'PT10M' ) ) |
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| 423 | 1 | ->set( $metadata ); |
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| 424 | 1 | $this->cache->save( $cacheItem ); |
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| 425 | 1 | return $metadata; |
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| 426 | } |
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| 427 | |||
| 428 | /** |
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| 429 | * @param $id |
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| 430 | * |
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| 431 | * @return string |
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| 432 | */ |
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| 433 | 1 | protected function getEntityCacheKey( $id ) { |
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| 435 | } |
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| 436 | } |
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| 437 |
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