<?php

// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
    die( 'Damn it.! Dude you are looking for what?' );
}

/**
 * Register all actions and filters for the plugin.
 *
 * Maintain a list of all hooks that are registered throughout
 * the plugin, and register them with the WordPress API. Call the
 * run function to execute the list of actions and filters.
 *
 * @category   Core
 * @package    I4T3
 * @subpackage Loader
 * @author     Joel James <me@joelsays.com>
 * @license    http://www.gnu.org/licenses/ GNU General Public License
 * @link       https://thefoxe.com/products/404-to-301
 */
class _404_To_301_Loader {

    /**
     * The array of actions registered with WordPress.
     *
     * @since  2.0.0
     * @access protected
     * @var    array     $actions The actions registered with WordPress to fire when the plugin loads.
     */
    protected $actions;

    /**
     * The array of filters registered with WordPress.
     *
     * @since  2.0.0
     * @access protected
     * @var    array     $filters The filters registered with WordPress to fire when the plugin loads.
     */
    protected $filters;

    /**
     * Initialize the collections used to maintain the actions and filters.
     *
     * @since  2.0.0
     * @access public
     * 
     * @return void
     */
    public function __construct() {
        
        // actions array
        $this->actions = array();
        // filters array
        $this->filters = array();
    }

    /**
     * Add a new action to the collection to be registered with WordPress.
     * 
     * @param string $hook          The name of the WordPress action that is being registered.
     * @param object $component     A reference to the instance of the object on which the action is defined.
     * @param string $callback      The name of the function definition on the $component.
     * @param int    $priority      The priority at which the function should be fired.
     * @param int    $accepted_args The number of arguments that should be passed to the $callback.
     * 
     * @since  2.0.0
     * @access public
     * 
     * @return void
     */
    public function add_action( $hook, $component, $callback, $priority = 10, $accepted_args = 1 ) {
        
        $this->actions = $this->add( $this->actions, $hook, $component, $callback, $priority, $accepted_args );
    }

    /**
     * Add a new filter to the collection to be registered with WordPress.
     *
     * @param string $hook           The name of the WordPress filter that is being registered.
     * @param object $component      A reference to the instance of the object on which the filter is defined.
     * @param string $callback       The name of the function definition on the $component.
     * @param int    $priority       The priority at which the function should be fired.
     * @param int    $accepted_args  The number of arguments that should be passed to the $callback.
     * 
     * @since  2.0.0
     * @access public
     * 
     * @return void
     */
    public function add_filter( $hook, $component, $callback, $priority = 10, $accepted_args = 1 ) {
        
        $this->filters = $this->add( $this->filters, $hook, $component, $callback, $priority, $accepted_args );
    }

    /**
     * A utility function that is used to register the actions and hooks into a single
     * collection.
     *
     * @param array  $hooks         The collection of hooks that is being registered (that is, actions or filters).
     * @param string $hook          The name of the WordPress filter that is being registered.
     * @param object $component     A reference to the instance of the object on which the filter is defined.
     * @param string $callback      The name of the function definition on the $component.
     * @param int    $priority      The priority at which the function should be fired.
     * @param int    $accepted_args The number of arguments that should be passed to the $callback.
     * 
     * @since  2.0.0
     * @access private
     * 
     * @return array The collection of actions and filters registered with WordPress.
     */
    private function add( $hooks, $hook, $component, $callback, $priority, $accepted_args ) {

        $hooks[] = array(
            'hook' => $hook,
            'component' => $component,
            'callback' => $callback,
            'priority' => $priority,
            'accepted_args' => $accepted_args
        );

        return $hooks;
    }

    /**
     * Register the filters and actions with WordPress.
     *
     * @since  2.0.0
     * @access public
     * 
     * @return void
     */
    public function run() {

        foreach( $this->filters as $hook ) {
            add_filter( $hook['hook'], array($hook['component'], $hook['callback']), $hook['priority'], $hook['accepted_args'] );
        }

        foreach( $this->actions as $hook ) {
            add_action( $hook['hook'], array($hook['component'], $hook['callback']), $hook['priority'], $hook['accepted_args'] );
        }
    }
}