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<?php

/**
 * Class for handling miscellaneous AJAX routines
 * @package CTA
 * @subpackage AJAXListeners
 */

class CTA_Ajax_Listeners {

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

    /**
    *   Loads hooks and filters
    */
    public static function load_hooks() {

        /* Add listener to clear "all" CTA statistics */
        add_action( 'wp_ajax_wp_cta_clear_all_cta_stats', array(__CLASS__, 'clear_all_stats'));

        /* Adds listener to clear CTA stats */
        add_action( 'wp_ajax_wp_cta_clear_stats_action', array(__CLASS__, 'clear_stats'));

        /* Adds listener to clear CTA Variation stats   */
        add_action( 'wp_ajax_wp_cta_clear_variation_stats', array(__CLASS__, 'clear_variation_stats'));

        /* Adds listener to record CTA Variation impression */
        add_action('wp_ajax_wp_cta_record_impressions', array(__CLASS__, 'record_impression'));
        add_action('wp_ajax_nopriv_wp_cta_record_impressions', array(__CLASS__, 'record_impression'));

        /* Adds listener to record CTA variation conversions */
        add_action('wp_ajax_wp_cta_record_conversion', array(__CLASS__, 'record_conversion'));
        add_action('wp_ajax_nopriv_wp_cta_record_conversion', array(__CLASS__, 'record_conversion'));

        /* Adds listener to save CTA post meta */
        add_action( 'wp_ajax_wp_wp_call_to_action_meta_save', array(__CLASS__, 'save_meta'));

        /* Adds listener to serve next cta variation in line & update markers */
        add_action( 'wp_ajax_nopriv_cta_get_variation', array(__CLASS__, 'serve_varition'));
        add_action( 'wp_ajax_cta_get_variation', array(__CLASS__, 'serve_varition'));
    }

    /**
    * Clears all CTA Stats
    */
    public static function clear_all_stats() {
        $ctas = get_posts( array(
            'post_type' => 'wp-call-to-action',
            'posts_per_page' => -1
        ));


        foreach ($ctas as $cta) {
            /* delete conversions */
            //Inbound_Events::delete_related_events( $cta->ID );

            /* delete impressions */
            $variations = CTA_Variations::get_variations( $cta->ID  );
            foreach ($variations as $vid=> $variation){
                CTA_Variations::set_impression_count($cta->ID , $vid);
            }
        }

        header('HTTP/1.1 200 OK');
        exit;
    }

    /**
    *   Clears stats for CTA given ID
    */
    public static function clear_stats() {
        $cta_id = intval($_POST['page_id']);
        //Inbound_Events::delete_related_events( $cta_id );

        /* delete impressions */
        $variations = CTA_Variations::get_variations( $cta_id  );
        foreach ($variations as $vid=> $variation){
            CTA_Variations::set_impression_count($cta_id , $vid , 0);
            CTA_Variations::set_conversion_count($cta_id , $vid , 0);
        }
        header('HTTP/1.1 200 OK');
        exit;
    }

    /**
    *   Clears stats for CTA variations given CTA ID and variation ID
    */
    public static function clear_variation_stats() {
        $cta_id = intval($_POST['page_id']);
        $vid = intval($_POST['variation']);
        //Inbound_Events::delete_related_events( $cta_id, $vid );
        CTA_Variations::set_impression_count($cta_id , $vid , 0);
        CTA_Variations::set_conversion_count($cta_id , $vid , 0);
        header('HTTP/1.1 200 OK');
        exit;
    }

    /**
    *   Record impressions for CTA variation(s) given CTA ID(s) and variation ID(s)
    */
    public static function record_impression() {
        global $wpdb; // this is how you get access to the database
        global $user_ID;

        if (!isset($_POST['cta_impressions'])) {
            return;
        }

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

        if ( $do_not_track ) {
            return;
        }

        /* run recoord impression routines */
        foreach ( $_POST['cta_impressions'] as $cta_id => $vid ) {
            do_action('wp_cta_record_impression', array(
                'page_id' =>(int) $_POST['page_id'],
                'cta_id' =>(int) $cta_id,
                'variation_id' => (int) $vid
            ));
        }

        //print_r($ctas);
        header('HTTP/1.1 200 OK');
        exit;
    }


    /**
    *   Record conversion for CTA variation given CTA ID and variation ID
    */
    public static function record_conversion() {
        global $wpdb; // this is how you get access to the database
        global $user_ID;

        $cta_id = trim(intval($_POST['cta_id']));
        $variation_id = trim(intval($_POST['variation_id']));

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

        if ( $do_not_track ) {
            return;
        }

        do_action('wp_cta_record_conversion', $cta_id, $variation_id);

        print $cta_id;
        header('HTTP/1.1 200 OK');
        exit;
    }

    /**
    *   Saves meta pair values give cta ID, meta key, and meta value
    */
    public static function save_meta() {
        global $wpdb;

        if ( !wp_verify_nonce( $_POST['nonce'], "wp-call-to-action-meta-nonce")) {
            exit("Wrong nonce");
        }

        $new_meta_val = $_POST['new_meta_val'];
        $meta_id = sanitize_text_field($_POST['meta_id']);
        $post_id = intval($_POST['page_id']);

        if ($meta_id === "main_title") {
            $my_post = array();
            $my_post['ID'] = $post_id;
            $my_post['post_title'] = $new_meta_val;

            // Update the post into the database
            wp_update_post( $my_post );
        }

        if ($meta_id === "the_content") {
            $title_save = get_post_meta($post_id, "wp-cta-main-headline", true); // fix content from removing title
            $my_post = array();
            $my_post['ID'] = $post_id;
            $my_post['post_content'] = $new_meta_val;

            // Update the post into the database
            wp_update_post( $my_post );
            add_post_meta( $post_id, "wp-cta-main-headline", $title_save, true ) or update_post_meta( $post_id, "wp-cta-main-headline", $title_save ); // fix main headline removal
        } else {
            add_post_meta( $post_id, $meta_id, $new_meta_val, true ) or update_post_meta( $post_id, $meta_id, $new_meta_val );
        }

        header('HTTP/1.1 200 OK');
        exit;
    }

    /**
    *  Get current variation for CTA
    */
    public static function serve_varition() {

        /* Make Sure the right GET param is attached to continue */
        if ( !isset($_REQUEST['cta_id']) || !is_numeric($_REQUEST['cta_id']) ) {
            echo 'x';
            exit;
        } else  {
            $cta_id = intval($_REQUEST['cta_id']);
        }

        $variations = CTA_Variations::get_variations($cta_id );
        $variation_marker = get_post_meta( $cta_id , '_cta_ab_variation_marker', true );

        if (!is_numeric($variation_marker)) {
            $variation_marker = 0;
        }

        /* get array of live variations */
        if ($variations)    {
            foreach ($variations as $vid => $variation )    {
                if (!isset($variation['status']) || $variation['status'] == 'active'  ){
                    $live_variations[] = $vid;
                }
            }
        }

        /* if no live variation return 0 */
        if (!$live_variations) {
            echo 'x';
            exit;
        }

        /* if only one live variation return the vid */
        if (count($live_variations)==1) {
            echo $live_variations[0];
            exit;
        }

        /* flip keys with values*/
        $keys_as_values = array_flip($live_variations);
        reset($keys_as_values);

        /* get vid current position */
        if (!isset($keys_as_values[$variation_marker])) {
            $variation_marker = reset($keys_as_values);
        }

        $i = 0;
        if ( key($keys_as_values) != $variation_marker) {
            while ((next($keys_as_values) != $variation_marker )){
                if ($i>100) {
                    break;
                }
                $i++;
            }
        }


        $key = next($keys_as_values);
        $variation_marker = $live_variations[$key];


        if (!$variation_marker) {
            $variation_marker = reset($keys_as_values);
        }


        update_post_meta( $cta_id ,  '_cta_ab_variation_marker', $variation_marker);
        echo $variation_marker;
        exit;


    }

}

/* Loads CTA_Ajax_Listeners pre init */
new CTA_Ajax_Listeners();