<?php

/**
 * Register all actions and filters for the plugin
 *
 * @since      1.0.0
 *
 * @package    UTCore
 */

/**
 * 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.
 *
 * @package    UTCore
 *
 */

namespace UTCore\utils;

class Loader
{
    /**
     * The array of actions registered with WordPress.
     *
     * @since    1.0.0
     *
     * @var array the actions registered with WordPress to fire when the plugin loads
     */
    protected $actions;

    /**
     * The array of filters registered with WordPress.
     *
     * @since    1.0.0
     *
     * @var array the filters registered with WordPress to fire when the plugin loads
     */
    protected $filters;

    /**
     * Initialize the collections used to maintain the actions and filters.
     *
     * @since    1.0.0
     */
    public function __construct()
    {
        $this->actions = array();
        $this->filters = array();
    }

    /**
     * Add a new action to the collection to be registered with WordPress.
     *
     * @since    1.0.0
     *
     * @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      Optional. he priority at which the function should be fired. Default is 10.
     * @param int    $accepted_args Optional. The number of arguments that should be passed to the $callback. Default is 1.
     */
    public function addAction($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.
     *
     * @since    1.0.0
     *
     * @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      Optional. he priority at which the function should be fired. Default is 10.
     * @param int    $accepted_args Optional. The number of arguments that should be passed to the $callback. Default is 1
     */
    public function addFilter($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.
     *
     * @since    1.0.0
     *
     * @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 $callback
     *
     * @return array the collection of actions and filters registered with WordPress
     */
    private function add($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    1.0.0
     */
    public function run()
    {
        foreach ( $this->filters as $hook ) {
            add_filter( $hook['hook'], [ $hook['component'], $hook['callback'] ], $hook['priority'], $hook['accepted_args'] );
        }

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