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<?php |
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namespace Scriptotek\GoogleBooks; |
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use GuzzleHttp\Client; |
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use Scriptotek\GoogleBooks\GoogleBooks; |
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class LibraryBuilder |
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{ |
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protected $data; |
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protected $client; |
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protected $chunk; |
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protected $query; |
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protected $limit; |
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/** |
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* Accepts a GoogleBooks dependency and sets it as a client property |
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* |
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* @param GoogleBooks $GoogleBooks |
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*/ |
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public function __construct(GoogleBooks $GoogleBooks) |
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{ |
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$this->client = $GoogleBooks; |
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} |
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/** |
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* Limits the results. May be an integer between 1 and 40 |
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* |
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* @param int $limit |
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* @return self |
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*/ |
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public function limit($limit) |
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{ |
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$this->limit = $limit; |
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return $this; |
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} |
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/** |
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* Sets the query property |
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* |
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* @param string $query |
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* @return self |
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*/ |
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public function search($query) |
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{ |
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$this->query = $query; |
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return $this; |
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} |
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/** |
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* Fetches results from the Google API |
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* |
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* @param string $id |
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* @return array |
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*/ |
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private function fetch($id = false) |
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{ |
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if ($this->limit <= 40) { |
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if ($id !== false) { |
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return $this->client->getItem("volumes/$id"); |
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} |
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return $this->client->raw('volumes', $this->getParams()); |
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} |
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return $this->fetchAll(); |
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} |
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/** |
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* Performs multiple searches in order to overcome Googles max of 40 results per request |
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* |
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* @return array |
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*/ |
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private function fetchAll() |
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{ |
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return $this->data = $this->client->listItems('volumes', ['q' => $this->query]); |
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} |
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/** |
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* Finds and returns one result. Should accept a book ID (found on API responses) |
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* |
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* @param string $id |
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* @return Scriptotek\GoogleBooks\Volume |
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*/ |
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public function find($id) |
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{ |
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return $this->fetch($id); |
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} |
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/** |
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* Retrieves the first result |
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* |
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* @return Scriptotek\GoogleBooks\Volume |
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*/ |
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public function first() |
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{ |
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if ($this->fetch()->totalItems) { |
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return $this->fetch()->items[0]; |
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} |
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return null; |
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} |
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/** |
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* Gets all the results from the query. Possibly chunks the results |
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* |
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* @return array |
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* @see chunk() |
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*/ |
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public function all() |
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{ |
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if ($this->chunk) { |
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return $this->data = array_chunk($this->fetch()->items, $this->chunk); |
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} |
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return $this->data = $this->fetch(); |
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} |
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/** |
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* Sets the chunk property. Used as an alias for array chunking. Primarily for views |
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* |
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* @param int $chunk |
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* @return self |
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*/ |
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public function chunk($chunk) |
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{ |
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$this->chunk = $chunk; |
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return $this; |
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} |
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/** |
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* Gets the paramters to be passed to the API request. |
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* |
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* @return array |
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*/ |
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private function getParams() |
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{ |
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$params = []; |
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$params['q'] = $this->query; |
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$params['maxResults'] = $this->limit ?: 40; |
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return $params; |
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} |
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} |
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scriptotek /
php-google-books
