<?php

/**
 * Helper class for MailPoet.
 *
 * @since 1.5.4
 */
final class FLBuilderServiceMailPoet extends FLBuilderService {

	/**
	 * The ID for this service.
	 *
	 * @since 1.5.4
	 * @var string $id
	 */  
	public $id = 'mailpoet';
	
	/**
	 * Test the API connection.
	 *
	 * @since 1.5.4
	 * @param array $fields
	 * @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()
		);
		
		return $response;
	}

	/**
	 * Renders the markup for the connection settings.
	 *
	 * @since 1.5.4
	 * @return string The connection settings markup.
	 */  
	public function render_connect_settings() 
	{
		return '';
	}

	/**
	 * Render the markup for service specific fields. 
	 *
	 * @since 1.5.4
	 * @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 ) 
	{
		$response = array( 
			'error'  => false, 
			'html'   => '' 
		);
		$lists = array();
		
		try {
			// Mailpoet 2+
			if ( class_exists( 'WYSIJA' ) ) {
				$list_model         = WYSIJA::get( 'list', 'model' );
				$lists              = $list_model->get( array( 'name', 'list_id' ), array( 'is_enabled' => 1 ) );
			
			// Mailpoet 3.0
			} elseif ( defined( 'MAILPOET_INITIALIZED' ) && true === MAILPOET_INITIALIZED ) {

				$listing = new MailPoet\Listing\Handler( '\MailPoet\Models\Segment' );
				$listing_data = $listing->get();

				if ( isset( $listing_data[ 'items' ] ) ) {
					foreach( $listing_data[ 'items' ] as $segment ) {
						$lists[] = array(
							'list_id' 	=> $segment->id,
							'name' 		=> $segment->name
						);
					}
				}				
			}

			$response['html']   = self::render_list_field( $lists, $settings );						
		} 
		catch ( Exception $e ) {
			$response['error'] = __( 'There was an error retrieveing your lists.', 'fl-builder' );
		}
		
		return $response;
	}

	/**
	 * Render markup for the list field. 
	 *
	 * @since 1.5.4
	 * @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['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 MailPoet.
	 *
	 * @since 1.5.4
	 * @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 )
	{
		$response = array( 'error'   => false );
		$user     = array( 'email'   => $email );
		
		if ( ! class_exists( 'WYSIJA' ) 
			&& ( ! defined( 'MAILPOET_INITIALIZED' ) || ( defined( 'MAILPOET_INITIALIZED' ) && false === MAILPOET_INITIALIZED ) )
		 	) {
			$response['error'] = __( 'There was an error subscribing. MailPoet is not installed.', 'fl-builder' );
		}
		else {

			if ( $name ) {			
				$names = explode( ' ', $name );
			}
			
			// Mailpoet 2+
			if ( class_exists( 'WYSIJA' ) ) {
				
				if ( $names && isset( $names[0] ) ) {
					$user['firstname'] = $names[0];
				}
				if ( $names && isset( $names[1] ) ) {
					$user['lastname'] = $names[1];
				}

				$helper = WYSIJA::get( 'user', 'helper' );

				$helper->addSubscriber( array(
					'user'      => $user,
					'user_list' => array( 'list_ids' => array( $settings->list_id ) ),
				));

			// Mailpoet 3.0	
			} elseif ( defined( 'MAILPOET_INITIALIZED' ) && true === MAILPOET_INITIALIZED ) {
				$subscriber = new MailPoet\Models\Subscriber();

				if ( $names && isset( $names[0] ) ) {
					$user['first_name'] = $names[0];
				}
				if ( $names && isset( $names[1] ) ) {
					$user['last_name'] = $names[1];
				}

				$subscribed = $subscriber::subscribe( $user, array( $settings->list_id ) );
			    $errors = $subscribed->getErrors();

			    if( $errors !== false ) {
			    	$response['error'] = sprintf( __( 'There was an error subscribing to Mailpoet. %s', 'fl-builder' ), $errors[0] );
			    }
			}			
		}
		
		return $response;
	}
}