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<?php

/**
 * Class that monitors cta link click and form submission conversions related to CTAs
 *
 * @package CTA
 * @subpackage Tracking
 */


class CTA_Conversion_Tracking {

    /**
    *  Initializes Class
    */
    public function __construct() {
        self::load_hooks();
    }

    public static function load_hooks() {

        /* track masked cta links */
        add_action( 'inbound_track_link', array(__CLASS__, 'track_cta_link'));

        /* Track form submissions related to call to actions a conversions */
        add_filter('inboundnow_store_lead_pre_filter_data', array(__CLASS__, 'set_form_submission_conversion'), 20, 1 );

        /* Records impression for cta */
        add_action( 'wp_cta_record_impression', array(__CLASS__, 'record_impression_event'), 10, 1);

        /* Records impression for cta */
        add_action( 'wp_cta_record_impression', array(__CLASS__, 'update_impression_object'), 10, 1);

        /* Records conversion for cta */
        add_action( 'wp_cta_record_conversion', array(__CLASS__, 'record_conversion'), 10, 2);

    }

    /**
    *  Listens for tracked masked link processing
    */
    public static function track_cta_link( $args ) {

        $do_not_track = apply_filters('inbound_analytics_stop_track', false );

        /* do not track if tracking disabled, if not cta, if cta is 0, or link is directly accessed without referrer */
        if ( $do_not_track || !isset($args['cta_id']) || !$args['cta_id'] || !wp_get_referer() ) {
            return;
        }


        $event = array(
            'event_name' => 'inbound_cta_click',
            'cta_id' => (isset($args['cta_id'])) ? $args['cta_id'] : 0,
            'page_id' => (isset($args['page_id'])) ? $args['page_id'] : 0,
            'variation_id' => (isset($args['vid'])) ? $args['vid'] : 0
        );

        /* for events table tracking and other hooks */
        Inbound_events::store_event($event);

        /* increase split testing conversion */
        self::record_conversion( $args['cta_id'] , $args['vid'] );

    }

    /**
    *  Listens for tracked form submissions embedded in calls to actions & incrememnt conversions
    */
    public static function set_form_submission_conversion( $data ) {

        parse_str($data['raw_params'], $raw_post_values );

        if (!isset($raw_post_values['wp_cta_id']) || !$raw_post_values['wp_cta_id'] ) {
            return $data;
        }

        $do_not_track = apply_filters('inbound_analytics_stop_track', false );

        if ( $do_not_track ) {
            return $data;
        }

        $cta_id = $raw_post_values['wp_cta_id'];
        $vid = $raw_post_values['wp_cta_vid'];

        $lp_conversions = get_post_meta( $cta_id, 'wp-cta-ab-variation-conversions-'.$vid, true );
        $lp_conversions++;
        update_post_meta($cta_id, 'wp-cta-ab-variation-conversions-'.$vid, $lp_conversions );

        return $data;
    }


    /**
     * Stores lead as conversion
     * @param $args['cta_id']
     * @param  $args['id']
     * @param $args['vid']
     */
    public static function store_as_conversion( $args ) {

        if (!isset($args['id']) || !$args['id'] ) {
            return;
        }

        $time = current_time( 'timestamp', 0 );
        $wordpress_date_time = date("Y-m-d G:i:s T", $time);


        $conversion_data = get_post_meta( $args['id'] , 'wpleads_conversion_data', TRUE );


        if (!$conversion_data) {
            $conversion_data = array();
        } else {
            $conversion_data = json_decode($conversion_data,true);
        }

        $conversion_data[]['id'] = $args['cta_id'];
        $conversion_data[]['variation'] = $args['vid'];
        $conversion_data[]['datetime'] = $wordpress_date_time;
        $conversion_data = json_encode($conversion_data);


        update_post_meta( $args['id'], 'wpleads_conversion_data', $conversion_data );
        update_post_meta( $args['id'], 'wpl-lead-conversion-count', count($conversion_data));

    }


    /**
     * Adds page view event to represent the CTA impression
     *
     * @param INT $cta_id id of call to action
     * @param INT $vid id of variation belonging to call to action
     *
     */
    public static function record_impression_event( $event ) {

        Inbound_Events::store_page_view(array(
            'page_id' => (isset($event['page_id'])) ? $event['page_id'] : 0 ,
            'cta_id' => (isset($event['cta_id'])) ? $event['cta_id'] : 0 ,
            'variation_id' => (isset($event['variation_id'])) ? $event['variation_id'] : 0 ,
        ));
    }
    /**
     * Increments impression count for given cta and variation id
     *
     * @param INT $cta_id id of call to action
     * @param INT $vid id of variation belonging to call to action
     *
     */
    public static function update_impression_object( $event ) {

        $impressions = get_post_meta( $event['cta_id'] ,'wp-cta-ab-variation-impressions-'.$event['variation_id'], true);

        if (!is_numeric($impressions)) {
            $impressions = 1;
        } else {
            $impressions++;
        }

        update_post_meta( $event['cta_id'], 'wp-cta-ab-variation-impressions-'.$event['variation_id'], $impressions);
    }


    /**
     * Increments conversion count for given cta id and variation id
     *
     * @param INT $cta_id id of call to action
     * @param INT $vid id of variation belonging to call to action
     *
     */
    public static function record_conversion(   $cta_id, $vid ) {

        $conversions = get_post_meta( $cta_id, 'wp-cta-ab-variation-conversions-' . $vid, true);

        if (!is_numeric($conversions)) {
            $conversions = 1;
        } else {
            $conversions++;
        }

        update_post_meta( $cta_id, 'wp-cta-ab-variation-conversions-'.$vid, $conversions);
    }
}

new CTA_Conversion_Tracking();