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<?php |
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use MetzWeb\Instagram\Instagram as Instagram; |
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class InstagramPageExtension extends DataExtension |
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{ |
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/** |
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* @var array |
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*/ |
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private static $casting = [ |
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'instagramShortcodeHandler' => 'HTMLText', |
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]; |
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/** |
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* Gets a list of media from the cache. |
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* |
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* @param InstagramAccount $instagramAccount |
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* @param string $maxID |
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* @return array|null |
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*/ |
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public static function getMediaFromCache($instagramAccount, $maxID) |
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{ |
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$cache = SS_Cache::factory('InstagramPage'); |
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if (!($result = $cache->load("{$instagramAccount->getField('Title')}_{$maxID}"))) { |
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return null; |
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} |
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return unserialize($result); |
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} |
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/** |
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* Gets a list of media from Instagram. |
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* |
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* @param InstagramAccount $instagramAccount |
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* @param string $maxID |
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* @return array|null |
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*/ |
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public static function getMediaFromInstagram($instagramAccount, $maxID) |
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{ |
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$response = $instagramAccount->getMedia($maxID); |
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if (!$response) { |
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return null; |
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} |
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$raw = $response->getRaw(); |
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if (!$raw || !array_key_exists('meta', $raw) || $raw['meta']['code'] !== 200) { |
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user_error('Unable to fetch media from Instagram', E_USER_WARNING); |
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return null; |
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} |
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return $raw['data']; |
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} |
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/** |
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* Updates the cache with media fetched from Instagram. |
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* |
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* @param InstagramAccount $instagramAccount |
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* @param string $maxID |
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* @param array $media |
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* @return null |
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*/ |
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public static function updateCachedMedia($instagramAccount, $maxID, $media) |
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{ |
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$cache = SS_Cache::factory('InstagramPage'); |
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$cache->save(serialize($media), "{$instagramAccount->getField('Title')}_{$maxID}"); |
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} |
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/** |
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* Gets a list of media from the cache if available. Falls back to making an API request. |
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* |
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* @param InstagramAccount $instagramAccount |
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* @param string $maxID |
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* @return array|null |
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*/ |
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public static function getMedia($instagramAccount, $maxID) { |
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// Return media from the cache if it's available. |
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if ($media = self::getMediaFromCache($instagramAccount, $maxID)) { |
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return $media; |
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} |
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// Fetch media from Instagram and cache it. |
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if ($media = self::getMediaFromInstagram($instagramAccount, $maxID)) { |
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self::updateCachedMedia($instagramAccount, $maxID, $media); |
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} |
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return $media; |
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} |
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/** |
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* Handler for the `instagram` Shortcode. |
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* |
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* @return string|null |
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*/ |
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public static function instagramShortcodeHandler($args, $content = null, $parser = null, $tag) |
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{ |
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if (!array_key_exists('username', $args)) { |
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return null; |
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} |
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$instagramAccount = InstagramAccount::get()->filter('Title', $args['username'])->First(); |
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// Make sure the InstagramAccount is valid and has been authorised. |
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if (!$instagramAccount || !$instagramAccount->getField('AccessToken')) { |
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return null; |
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} |
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$controller = Controller::curr(); |
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$link = $controller->Link(); |
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// Valid IDs only have digits and an underscore. |
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$maxID = preg_replace('/[^\d_]/', '', $controller->getRequest()->getVar('start')); |
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$media = self::getMedia($instagramAccount, $maxID); |
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if (!$media) { |
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return null; |
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} |
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// If there are less items returned than the maximum allowed per page, |
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// we're on the last page, so don't include a 'next' button. |
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// |
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// TODO: |
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// Handle edge case where it's the last page and exactly "items_per_page" are returned. |
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$loadMoreLink = count($media) < Config::inst()->get('InstagramAccount', 'items_per_page') |
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? null |
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: $link . '?start=' . array_pop((array_slice($media, -1)))['id']; |
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// Make tags iterable in the template. |
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foreach ($media as &$item) { |
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$item['tags'] = ArrayList::create( |
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array_map(function ($tag) { |
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return ArrayData::create(['name' => $tag]); |
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}, $item['tags']) |
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); |
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} |
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$data = ArrayData::create([ |
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'loadMoreLink' => $loadMoreLink, |
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'instagramLink' => "https://www.instagram.com/{$args['username']}" |
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]); |
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$data->setField('media', ArrayList::create($media)); |
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return $data->renderWith('InstagramPage'); |
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} |
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} |
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SomarDesignStudios /
silverstripe-instagram
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You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.