class-salesforce.php

class-salesforce.php

<?php
/**
 * Salesforce Web-To-Lead cURL PHP Wrapper.
 *
 * This class is a helper for Salesforce web-to-lead
 * feature.
 *
 * @package   Salesforce_WTL
 * @version   0.1.1
 * @author    Julien Liabeuf <web@n2clic.com>
 * @license   GPL-2.0+
 * @link      http://n2clic.com
 * @copyright 2014 N2Clic
 * @link      http://themeavenue.net/salesforce-web-lead-form-curl/
 */
class Salesforce_WTL {

	/**
	 * Salesforce Auth Key.
	 * 
	 * @var    string
	 * @since  0.1.0
	 */
	protected $oid = null;

	public function __construct() {

		// Make sure cURL is enabled
		if( !function_exists( 'curl_init' ) ) {
			return new WP_Error( 'no_curl', __( 'cURL is not loaded on this server.', 'dba' ) );
		}

		$this->endpoint  = esc_url( 'https://www.salesforce.com/servlet/servlet.WebToLead?encoding=UTF-8' );
		$this->mapped    = array(); // Contains all mapped fields
		$this->returl    = home_url();
		$this->debug     = null;
		$this->followloc = TRUE;

		// Map the default fields
		$this->map_defaults();

	}

	/**
	 * Set the Salesforce OID.
	 *
	 * The OID key is required for authentifaction
	 * when submitting the data to the service.
	 * 
	 * @param  string $oid Auth key
	 * @since  0.1.0
	 */
	public function setOID( $oid ) {
		$this->oid = $oid;
	}

	/**
	 * Set return URL.
	 * 
	 * @param  string $url Return URL
	 * @since  0.1.0
	 */
	public function set_return_url( $url ) {
		$this->returl = esc_url( $url );
	}

	/**
	 * Set debug e-mail.
	 * 
	 * @param  string $email Debug e-mail
	 * @since  0.1.0
	 */
	public function set_debug_email( $email ) {
		$this->debug = $email;
	}

	/**
	 * Map custom field.
	 *
	 * Salesforce custom fields are using
	 * a random chain. If custom fields are used
	 * they need to be mapped to the form's field.
	 * 
	 * @param  string $origin Form field name
	 * @param  string $target Salesforce custom field name
	 * @since  0.1.0
	 */
	public function map_field( $field = array() ) {

		$defaults = array(
			'origin'   => null,
			'target'   => null,
			'callback' => 'sanitize_text_field',
			'required' => false
		);

		$field = array_merge( $defaults, $field );

		if( is_null( $field['origin'] ) || is_null( $field['target'] ) )
			return false;

		// Sanitize the input
		$field['origin'] = sanitize_text_field( $field['origin'] );
		$field['target'] = sanitize_text_field( $field['target'] );

		// Map the field
		$this->mapped[$field['origin']] = $field;

	}

	/**
	 * Map default Salesforce fields.
	 *
	 * @since  0.1.0
	 */
	protected function map_defaults() {

		$defaults = array(
			'first_name' => array(
				'target'   => 'first_name',
				'callback' => 'sanitize_text_field'
			),
			'last_name' => array(
				'target'   => 'last_name',
				'callback' => 'sanitize_text_field'
			),
			'email' => array(
				'target'   => 'email',
				'callback' => 'sanitize_email'
			),
			'phone' => array(
				'target'   => 'phone',
				'callback' => 'sanitize_text_field'
			),
			'company' => array(
				'target'   => 'company',
				'callback' => 'sanitize_text_field'
			),
			'city' => array(
				'target'   => 'city',
				'callback' => 'sanitize_text_field'
			),
			'state' => array(
				'target'   => 'state',
				'callback' => 'sanitize_text_field'
			),
			'street' => array(
				'target'   => 'street',
				'callback' => 'sanitize_text_field'
			),
			'zip' => array(
				'target'   => 'zip',
				'callback' => 'sanitize_key'
			),
			'country' => array(
				'target'   => 'country',
				'callback' => 'sanitize_text_field'
			),
			'lead_source' => array(
				'target'   => 'lead_source',
				'callback' => 'sanitize_text_field'
			),
			'description' => array(
				'target'   => 'description',
				'callback' => 'sanitize_text_field'
			),
		);

		$this->mapped = array_merge( $this->mapped, apply_filters( 'swtl_default_fields', $defaults ) );

	}

	/**
	 * Return all mapped fields.
	 * 
	 * @return array Mapped fields
	 * @since  0.1.0
	 */
	public function get_mapped_fields() {
		return $this->mapped;
	}

	/**
	 * Clean the POST data.
	 *
	 * We make sure that all the data in the POST
	 * is mapped to a Salesforce field. If not, we ditch it.
	 * 
	 * @return array Cleaned data
	 * @since  0.1.0
	 */
	public function clean_data() {

		if( !isset( $_POST ) || empty( $_POST ) )
			return new WP_Error( 'no_post', __( 'No POST data to send to Salesforce.', 'dba' ) );

		$mapped  = $this->get_mapped_fields();
		$data    = $_POST;
		$clean   = array();
		$missing = array();

		// Check for required fields
		foreach( $mapped as $field => $settings ) {

			if( isset( $settings['required'] ) && true === $settings['required'] ) {

				if( !isset( $_POST[$field] ) || '' == $_POST[$field] ) {
					array_push( $missing, $field );
				}

			}

		}

		// If some fields are missing, save and abort
		if( !empty( $missing ) ) {

			$_SESSION['swtl_temp_values']  = $_POST;
			$_SESSION['swtl_temp_missing'] = serialize( $missing );
			wp_redirect( add_query_arg( array( 'error' => 1 ), $this->returl ) ); // Should NOT be the returl
			exit;

		}

		// Iterate through all the POST data
		foreach( $_POST as $key => $value ) {

			// Check if the current field is mapped
			if( !array_key_exists( $key, $mapped ) )
				continue;

			// Set the target field in Salesforce
			$target = $mapped[$key]['target'];

			// Sanitization callback
			$callback = isset( $mapped[$key]['callback'] ) ? $mapped[$key]['callback'] : 'sanitize_text_field';

			// Sanitize the value and add it
			if( function_exists( $callback ) ) {
				$clean[$target] = $callback( $value );
			} else {
				$clean[$target] = sanitize_text_field( $value );
			}

		}

		// Return the cleaned data
		return apply_filters( 'swtl_clean_data', $clean );

	}

	/**
	 * Send the data to Salesforce.
	 *
	 * Send the data contained in the POST to Salesforce
	 * using the mapped fields and the default
	 * Salesforce fields.
	 * 
	 * @return bool Result
	 * @since  0.1.0
	 */
	public function post() {

		// Get cleaned data
		$data = $this->clean_data();

		// If an error occured during cleaning we return it
		if( is_wp_error( $data ) )
			return $data;

		// If no data to pass we return a WP_Error
		if( empty( $data ) )
			return new WP_Error( 'no_data', __( 'There is no data to be sent to Salesforce.', 'dba' ) );

		// Time to add the OID for auth
		$data['oid'] = $this->oid;

		// Add the return URL
		$data['retURL'] = $this->returl;

		// Add the debug e-mail if any
		if( !is_null( $this->debug ) )
			$data['debugEmail'] = $this->debug;

		// Transform the array into a query as we don't use a multipart header
		$data = http_build_query( $data );

		// Open cURL connection
		$ch = curl_init();
		 
		// Set the url, number of POST vars, POST data
		curl_setopt( $ch, CURLOPT_URL, $this->endpoint );
		curl_setopt( $ch, CURLOPT_POST, TRUE );
		curl_setopt( $ch, CURLOPT_POSTFIELDS, $data );
		 
		// Set some settings that make it all work :)
		curl_setopt( $ch, CURLOPT_HEADER, FALSE );
		curl_setopt( $ch, CURLOPT_RETURNTRANSFER, FALSE );
		curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, $this->followloc );
		 
		// Execute SalesForce web to lead PHP cURL
		$result = curl_exec( $ch );
		 
		// Close cURL connection
		curl_close( $ch );

		return $result;

	}

}

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