class LLMS_Notification_Controller_Purchase_Receipt extends LLMS_Abstract_Notification_Controller {

	/**
	 * Trigger Identifier
	 *
	 * @var string
	 */
	public $id = 'purchase_receipt';

	/**
	 * Number of accepted arguments passed to the callback function
	 *
	 * @var integer
	 */
	protected $action_accepted_args = 1;

	/**
	 * Action hooks used to trigger sending of the notification
	 *
	 * @var array
	 */
	protected $action_hooks = array(
		'lifterlms_resend_transaction_receipt',
		'lifterlms_transaction_status_succeeded',
	);

	/**
	 * Determines if test notifications can be sent
	 *
	 * @var bool
	 */
	protected $testable = array(
		'basic' => false,
		'email' => true,
	);

	/**
	 * Callback function called when a lesson is completed by a student
	 *
	 * @since 3.8.0
	 *
	 * @param int $transaction Instance of a LLMS_Transaction.
	 * @return void
	 */
	public function action_callback( $transaction = null ) {

		$order         = $transaction->get_order();
		$this->user_id = $order->get( 'user_id' );
		$this->post_id = $transaction->get( 'id' );

		$this->send();

	}

	/**
	 * Takes a subscriber type (student, author, etc) and retrieves a User ID
	 *
	 * @since 3.8.0
	 * @since 3.10.2 Unknown.
	 *
	 * @param string $subscriber Subscriber type string.
	 * @return int|false
	 */
	protected function get_subscriber( $subscriber ) {

		switch ( $subscriber ) {

			case 'author':
				$txn   = llms_get_post( $this->post_id );
				$order = $txn->get_order();
				if ( ! $order ) {
					return false;
				}
				$product = $order->get_product();
				if ( ! $product ) {
					return false;
				}
				$uid = $product->get( 'author' );
				break;

			case 'student':
				$uid = $this->user_id;
				break;

			default:
				$uid = false;

		}

		return $uid;

	}

	/**
	 * Determine what types are supported
	 *
	 * Extending classes can override this function in order to add or remove support.
	 * 3rd parties should add support via filter on $this->get_supported_types().
	 *
	 * @since 3.8.0
	 *
	 * @return array Associative array, keys are the ID/db type, values should be translated display types.
	 */
	protected function set_supported_types() {
		return array(
			'email' => __( 'Email', 'lifterlms' ),
		);
	}

	/**
	 * Get an array of LifterLMS Admin Page settings to send test notifications
	 *
	 * @since 3.24.0
	 *
	 * @param string $type Notification type [basic|email].
	 * @return array
	 */
	public function get_test_settings( $type ) {

		$query = new WP_Query(
			array(
				'post_type'      => 'llms_transaction',
				'posts_per_page' => 25,
			)
		);

		$options = array(
			'' => '',
		);
		foreach ( $query->posts as $post ) {
			$transaction = llms_get_post( $post );
			$order       = $transaction->get_order();
			$student     = llms_get_student( $order->get( 'user_id' ) );
			if ( $transaction && $student ) {
				$options[ $transaction->get( 'id' ) ] = esc_attr(
					sprintf(
						// Translators: %1$d = The Order ID; %2$s The customer's full name; %3$s The product title.
						__( 'Order #%1$d from %2$s for "%3$s"', 'lifterlms' ),
						$order->get( 'id' ),
						$student->get_name(),
						$order->get( 'product_title' )
					)
				);
			}
		}

		return array(
			array(
				'class'             => 'llms-select2',
				'custom_attributes' => array(
					'data-allow-clear' => true,
					'data-placeholder' => __( 'Select a transaction', 'lifterlms' ),
				),
				'default'           => '',
				'id'                => 'transaction_id',
				'desc'              => '<br/>' . __( 'Send yourself a test notification using information from the selected transaction.', 'lifterlms' ),
				'options'           => $options,
				'title'             => __( 'Send a Test', 'lifterlms' ),
				'type'              => 'select',
				// 'selected' => false,
			),
		);

	}

	/**
	 * Get the translatable title for the notification
	 *
	 * Used on settings screens.
	 *
	 * @since 3.8.0
	 *
	 * @return string
	 */
	public function get_title() {
		return __( 'Purchase Receipt', 'lifterlms' );
	}

	/**
	 * Send a test notification to the currently logged in users
	 *
	 * Extending classes should redefine this in order to properly setup the controller with post_id and user_id data.
	 *
	 * @since 3.24.0
	 *
	 * @param string $type Notification type [basic|email].
	 * @param array  $data Array of test notification data as specified by $this->get_test_data().
	 * @return int|false
	 */
	public function send_test( $type, $data = array() ) {

		if ( empty( $data['transaction_id'] ) ) {
			return;
		}

		$transaction   = llms_get_post( $data['transaction_id'] );
		$order         = $transaction->get_order();
		$this->user_id = $order->get( 'user_id' );
		$this->post_id = $transaction->get( 'id' );

		return parent::send_test( $type );

	}

	/**
	 * Setup the subscriber options for the notification
	 *
	 * @since 3.8.0
	 *
	 * @param string $type Notification type id.
	 * @return array
	 */
	protected function set_subscriber_options( $type ) {

		$options = array();

		switch ( $type ) {

			case 'email':
				$options[] = $this->get_subscriber_option_array( 'author', 'yes' );
				$options[] = $this->get_subscriber_option_array( 'student', 'yes' );
				$options[] = $this->get_subscriber_option_array( 'custom', 'no' );
				break;

		}

		return $options;

	}

}