Hook Skeleton FV Player

/**
 * Custom Hook: Register custom hook
 * Register the hook so myCRED can load it.
 * @since 1.0
 * @version 1.0
 */
add_action( 'mycred_setup_hooks', 'mycredpro_register_custom_fv_video_hook' );
function mycredpro_register_custom_fv_video_hook( $installed ) {

    $installed['watching_fv'] = array(
        'title'       => 'Points for watching Flowplayer videos',
        'description' => 'Award %_plural% to users for watching videos.',
        'callback'    => array( 'myCRED_Hook_Fv_Views' )
    );

    return $installed;

}

/**
 * Custom Hook: Load custom hook
 * Since 1.6, this would be the proper way to add in the hook class from a theme file
 * or from a plugin file.
 * @since 1.0
 * @version 1.0
 */
add_action( 'mycred_load_hooks', 'mycredpro_load_custom_fv_video_hook', 10 );
function mycredpro_load_custom_fv_video_hook() {

    class myCRED_Hook_Fv_Views extends myCRED_Hook {

        /**
         * Construct
         */
        function __construct( $hook_prefs, $type = 'mycred_default' ) {

            parent::__construct( array(
                'id'       => 'watching_fv',
                'defaults' => array(
                    'creds'    => 'post',
                    'limit'    => '0/x',
                    'log'      => '%plural% for watching a video'
                )
            ), $hook_prefs, $type );

        }

        /**
         * Run
         * @since 1.0
         * @version 1.0
         */
        public function run() {

            add_action( 'wp_ajax_your-ajax-action', array( $this, 'ajax_handler' ), 10, 3 );

        }

        /**
         * AJAX Handler
         * @since 1.0
         * @version 1.0
         */
        public function ajax_handler() {

            // First you probably want some security by verifing a token maybe

            // Next we need the users ID
            $user_id = get_current_user_id();

            // Should check if the user is excluded from using myCRED
            if ( $this->core->exclude_user( $user_id ) ) die;

            // We need: A unique identifier for the video. If this is an int, we can save it as ref_id
            // if it's a string, we can save it under data. Either or, not both

            // Give points if we are not over a limit (if used)
            if ( ! $this->over_hook_limit( '', 'watching_fv_video', $user_id ) )
                $this->core->add_creds(
                    'watching_fv_video',    // a unqiue reference for this hook
                    $user_id,               // the user to get the points
                    $this->prefs['creds'],  // the amount of points to give / take
                    $this->prefs['log'],    // the log entry tempalte
                    $unique_id_as_ref_id,   // numeric identifier is stored here
                    $unique_id_as_data,     // string identifier is stored here
                    $this->mycred_type      // should not be changed unless you understand the consequence of doing so
                );

            die;

        }

        /**
         * Preference for Publish Content Hook
         * @since 1.0
         * @version 1.0
         */
        public function preferences() {

            $prefs = $this->prefs;

?>
<label for="<?php echo $this->field_id( 'creds' ); ?>" class="subheader"><?php _e( 'Referring Visitors', 'mycred' ); ?></label>
<ol>
    <li>
        <div class="h2"><input type="text" name="<?php echo $this->field_name( 'creds' ); ?>" id="<?php echo $this->field_id( 'creds' ); ?>" value="<?php echo $this->core->number( $prefs['creds'] ); ?>" size="8" /></div>
    </li>
    <li>
        <label for="<?php echo $this->field_id( 'limit' ); ?>"><?php _e( 'Limit', 'mycred' ); ?></label>
        <?php echo $this->hook_limit_setting( $this->field_name( 'limit' ), $this->field_id( 'limit' ), $prefs['limit'] ); ?>
    </li>
    <li class="empty">&nbsp;</li>
    <li>
        <label for="<?php echo $this->field_id( 'log' ); ?>"><?php _e( 'Log template', 'mycred' ); ?></label>
        <div class="h2"><input type="text" name="<?php echo $this->field_name( 'log' ); ?>" id="<?php echo $this->field_id( 'log' ); ?>" value="<?php echo esc_attr( $prefs['log'] ); ?>" class="long" /></div>
        <span class="description"><?php echo $this->available_template_tags( array( 'general' ) ); ?></span>
    </li>
</ol>
<?php

        }

        /**
         * Sanitise Preferences
         * @since 1.0
         * @version 1.0
         */
        function sanitise_preferences( $data ) {

            if ( isset( $data['limit'] ) && isset( $data['limit_by'] ) ) {
                $limit = sanitize_text_field( $data['limit'] );
                if ( $limit == '' ) $limit = 0;
                $data['limit'] = $limit . '/' . $data['limit_by'];
                unset( $data['limit_by'] );
            }

            return $data;

        }

    }

}