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<?php

/**
 * Helper class for the SendinBlue API.
 *
 * @since 1.5.6
 */
final class FLBuilderServiceSendinBlue extends FLBuilderService {

/**
	 * The ID for this service.
	 *
	 * @since 1.5.6
	 * @var string $id
	 */  
	public $id = 'sendinblue';

/**
	 * @since 1.5.6
	 * @var object $api_instance
	 * @access private
	 */  
	private $api_instance = null;

/**
	 * Get an instance of the API.
	 *
	 * @since 1.5.6
	 * @param string $access_key A valid access key.
	 * @return object The API instance.
	 */  
	public function get_api( $access_key ) 
	{
		if ( $this->api_instance ) {
			return $this->api_instance;
		}
		if ( ! class_exists( 'Mailin' ) ) {
			require_once FL_BUILDER_DIR . 'includes/vendor/sendinblue/Mailin.php';
		}
		
		$this->api_instance = new Mailin( 'https://api.sendinblue.com/v2.0', $access_key );
		
		return $this->api_instance;
	}
	
	/**
	 * Test the API connection.
	 *
	 * @since 1.5.6
	 * @param array $fields {
	 *      @type string $access_key A valid access key.
	 * }
	 * @return array{
	 *      @type bool|string $error The error message or false if no error.
	 *      @type array $data An array of data used to make the connection.
	 * }
	 */  
	public function connect( $fields = array() ) 
	{
		$response = array( 
			'error'  => false,
			'data'   => array()
		);
		
		// Make sure we have an access key.
		if ( ! isset( $fields['access_key'] ) || empty( $fields['access_key'] ) ) {
			$response['error'] = __( 'Error: You must provide an Access Key.', 'fl-builder' );
		}
		// Try to connect and store the connection data.
		else {
			
			$api    = $this->get_api( $fields['access_key'] );
			$result = $api->get_account();
			
			if ( ! is_array( $result ) ) {
				$response['error'] = __( 'There was an error connecting to SendinBlue. Please try again.', 'fl-builder' );
			}
			else if ( isset( $result['code'] ) && 'failure' == $result['code'] ) {
				$response['error'] = sprintf( __( 'Error: Could not connect to SendinBlue. %s', 'fl-builder' ), $result['message'] );
			}
			else {
				$response['data'] = array( 'access_key' => $fields['access_key'] );
			}
		}
		
		return $response;
	}

/**
	 * Renders the markup for the connection settings.
	 *
	 * @since 1.5.6
	 * @return string The connection settings markup.
	 */  
	public function render_connect_settings() 
	{
		ob_start();
		
		FLBuilder::render_settings_field( 'access_key', array(
			'row_class'     => 'fl-builder-service-connect-row',
			'class'         => 'fl-builder-service-connect-input',
			'type'          => 'text',
			'label'         => __( 'Access Key', 'fl-builder' ),
			'help'          => __( 'Your Access Key can be found in your SendinBlue account under API & Integration > Manager Your Keys > Version 2.0 > Access Key.', 'fl-builder' ),
			'preview'       => array(
				'type'          => 'none'
			)
		)); 
		
		return ob_get_clean();
	}

/**
	 * Render the markup for service specific fields. 
	 *
	 * @since 1.5.6
	 * @param string $account The name of the saved account.
	 * @param object $settings Saved module settings.
	 * @return array {
	 *      @type bool|string $error The error message or false if no error.
	 *      @type string $html The field markup.
	 * }
	 */  
	public function render_fields( $account, $settings ) 
	{
		$account_data   = $this->get_account_data( $account );
		$api            = $this->get_api( $account_data['access_key'] );
		$response       = array( 
			'error'         => false, 
			'html'          => '' 
		);
		
		$result = $api->get_lists( 1, 50 );
		
		if ( ! is_array( $result ) ) {
			$response['error'] = __( 'There was an error connecting to SendinBlue. Please try again.', 'fl-builder' );
		}
		else if ( isset( $result['code'] ) && 'failure' == $result['code'] ) {
			$response['error'] = sprintf( __( 'Error: Could not connect to SendinBlue. %s', 'fl-builder' ), $result['message'] );
		}
		else {
			$response['html'] = $this->render_list_field( $result['data']['lists'], $settings );
		}

return $response;
	}

/**
	 * Render markup for the list field. 
	 *
	 * @since 1.5.6
	 * @param array $lists List data from the API.
	 * @param object $settings Saved module settings.
	 * @return string The markup for the list field.
	 * @access private
	 */  
	private function render_list_field( $lists, $settings ) 
	{
		ob_start();
		
		$options = array( '' => __( 'Choose...', 'fl-builder' ) );
		
		foreach ( $lists as $list ) {
			$options[ $list['id'] ] = $list['name'];
		}
		
		FLBuilder::render_settings_field( 'list_id', array(
			'row_class'     => 'fl-builder-service-field-row',
			'class'         => 'fl-builder-service-list-select',
			'type'          => 'select',
			'label'         => _x( 'List', 'An email list from a third party provider.', 'fl-builder' ),
			'options'       => $options,
			'preview'       => array(
				'type'          => 'none'
			)
		), $settings); 
		
		return ob_get_clean();
	}

/** 
	 * Subscribe an email address to SendinBlue.
	 *
	 * @since 1.5.6
	 * @param object $settings A module settings object.
	 * @param string $email The email to subscribe.
	 * @param string $name Optional. The full name of the person subscribing.
	 * @return array {
	 *      @type bool|string $error The error message or false if no error.
	 * }
	 */  
	public function subscribe( $settings, $email, $name = false )
	{
		$account_data = $this->get_account_data( $settings->service_account );
		$response     = array( 'error' => false );
		
		if ( ! $account_data ) {
			$response['error'] = __( 'There was an error subscribing to SendinBlue. The account is no longer connected.', 'fl-builder' );
		}
		else {
			
			$api  = $this->get_api( $account_data['access_key'] );
			$data = array();
			
			if ( $name ) {
				
				$names = explode( ' ', $name );
				
				if ( isset( $names[0] ) ) {
					$data['NAME'] = $names[0];
				}
				if ( isset( $names[1] ) ) {
					$data['SURNAME'] = $names[1];
				}
			}
			
			$result = $api->create_update_user( $email, $data, 0, array( $settings->list_id ), array(), 0 );
			
			if ( ! is_array( $result ) ) {
				$response['error'] = __( 'There was an error subscribing to SendinBlue. Please try again.', 'fl-builder' );
			}
			else if ( isset( $result['code'] ) && 'failure' == $result['code'] ) {
				$response['error'] = sprintf( __( 'Error: Could not subscribe to SendinBlue. %s', 'fl-builder' ), $result['message'] );
			}
		}
		
		return $response;
	}
}