<?php
require_once ACF_Woo_Launcher::get_instance()->plugin_dir_path('includes/core/class-acf-woo-singleton.php');

class ACF_Woo_Base_Location extends ACF_Woo_Singleton {
    protected $acf_slug;
    protected $name;
    protected $group_slug;
    protected $priority = 10;
    protected $slug;

    // protect the constructor so that we can actually have a singleton
    protected function __construct() {
        add_action('acf-woo-register-locations/' . $this->group_slug, array(&$this, 'register_with_group'), $this->priority);
        add_action('template_redirect', array(&$this, 'load_acf_form_head'), 10);
    }

    // register this location with a specific location group
    public function register_with_group($group) {
        $group->register_location(array(
            'slug' => $this->acf_slug,
            'name' => $this->name,
            'object' => &$this,
        ));
    }

    // draw the acf form
    public function acf_form($args) {
        $func = apply_filters('acf-woo-render-acf_form', 'acf_form', $args);
        call_user_func_array($func, func_get_args());
    }

    // determine if an acf form was submitted
    protected function _form_submitted() {
        $pro = function_exists('acf_validate_save_post');
        // if this is acf pro, then validate the form, and pass
        if ($pro && isset($_POST['acf']) && acf_validate_save_post())
            return true;
        // if not pro, and the fields we submitted, pass
        if (!$pro && isset($_POST['fields'], $_POST['acf_settings']))
            return true;

        return false;
    }

    // determine when this group needs to load the acf_form_head function. should be overriden by child class for it's logic to run
    protected function _needs_form_head() {
        return false;
    }

    // stub for enqueuing the assets needed by this locaiton
    protected function _enqueue_assets() {
    }

    // stub for handling a form submission
    protected function _process_submitted_form() {
    }

    // when viewing a page, load the acf_form_head logic before page render
    public function load_acf_form_head() {
        // if this is not the appropriate woocommerce page, then bail now
        if (!$this->_needs_form_head())
            return;

        // process the form handler if we still need to
        if ($this->_form_submitted())
            $this->_process_submitted_form();

        // load any script and style for this location specifically
        $this->_enqueue_assets();

        // otherwise load the acf logic
        acf_form_head();
    }
}