<?php

class Wiaas_Shop {

	public static function init() {

		// registers special prices taxonomy that will enable package search based on
		// set and visible price types (default and customer specific ones)
		add_action('woocommerce_after_register_taxonomy', array(__CLASS__, 'register_prices_taxonomy'));

		// update prices search terms for package after prices extras have been updated
		add_action('wiaas_package_prices_extras_set', array(__CLASS__, 'update_package_prices_search_terms'), 10, 4);

		// create new shop if organization was assigned commercial lead role
		// or remove shop if commercial lead role was removed for organization
		add_action('wiaas_organization_roles_updated', array(__CLASS__, 'maybe_manage_shop_for_commercial_lead'), 10, 2);
	}

	/**
	 * Link customers to shop (this will enable them to search and order packages from this shop)
	 *
	 * @param int $owner_id
	 * @param array $customer_ids
	 */
	public static function set_shop_customers($owner_id, $customer_ids) {

		$current_customer_ids = wp_list_pluck(
			Wiaas_Shop_Data_Store::get_shop_customers($owner_id),
			'customer_id');

		// delete removed customers
		$removed_customer_ids = array_diff($current_customer_ids, $customer_ids);
		Wiaas_Shop_Data_Store::remove_shop_customers($owner_id, $removed_customer_ids);

		// save added customers
		$added_customer_ids = array_diff($customer_ids, $current_customer_ids);
		Wiaas_Shop_Data_Store::add_shop_customers($owner_id, $added_customer_ids);
	}

	/**
	 * Retrieve default order type for shop
	 *
	 * @param int $owner_id
	 *
	 * @return string
	 */
	public static function get_default_order_type($owner_id) {
		$order_type = get_term_meta(
			$owner_id,
			'_wiaas_shop_default_order_type',
			true);

		return empty($order_type) ? 'commercial_lead' : $order_type;
	}

	/**
	 * Update default order type for shop
	 *
	 * @param int $owner_id
	 * @param string $order_type
	 */
	public static function update_default_order_type($owner_id, $order_type) {

		if (in_array($order_type, array('commercial_lead', 'reseller'))) {
			update_term_meta($owner_id,  '_wiaas_shop_default_order_type', $order_type);
		}
	}

	/**
	 * Creates shop for new shop owner (organization with commercial lead role) or
	 * deletes existing shop if that role has been removed
	 *
	 * @param int $owner_id
	 * @param array $roles
	 */
	public static function maybe_manage_shop_for_commercial_lead($owner_id, $roles) {
		$is_commercial_lead = in_array('commercial_lead', $roles);

		$is_commercial_lead ?
			self::_maybe_create_shop($owner_id) :
			self::_maybe_remove_shop($owner_id);
	}

	/**
	 * Register special prices taxonomy to enable search of packages by prices inside every shop
	 */
	public static function register_prices_taxonomy() {
		$args = array(
			'hierarchical'      => false,
			'query_var'         => true,
			'rewrite'           => false,
			'public'            => true,
//			'capabilities'          => array(
//				'manage_terms' => 'manage_wiaas_package_price_terms',
//				'edit_terms'   => 'edit_wiaas_package_price_terms',
//				'delete_terms' => 'delete_wiaas_package_price_terms',
//				'assign_terms' => 'assign_wiaas_package_price_terms',
//			),
		);

		register_taxonomy( '_wiaas_shop_prices', array( 'product' ), $args );
	}

	/**
	 * Relate pricing search terms to package so customer can retrieve packages with default or
	 * their own specific prices.
	 * (ex: Package which will be hidden fro Customer 1 because default price
	 * is hidden can be visible for Customer 2 because specific prices are set for that customer)
	 *
	 * @param int $owner_id
	 * @param int $package_id
	 * @param array $cl_extras {
	 *			        $extra_price_payment_type =>  {
	 *                      @type bool visible      Indicates if payment type is visible to customer
	 *                  }
     *               }
	 * @param array $old_cl_extras {
	 *			        $extra_price_payment_type =>  {
	 *                      @type bool visible      Indicates if payment type is visible to customer
	 *                  }
	 *               }
	 */
	public static function update_package_prices_search_terms($owner_id, $package_id, $cl_extras, $old_cl_extras) {
		// remove pricing terms for previous prices
		if (! empty($old_cl_extras)) {

			$old_visible_price_types = array_keys(wp_list_filter($old_cl_extras, array( 'visible' => true )));

			$old_terms_names = preg_filter('/^/', '_' . $owner_id . '_', $old_visible_price_types);

			wp_remove_object_terms($package_id, $old_terms_names, '_wiaas_shop_prices');
		}

		// get visible price types set by shop owner (commercial lead)
		$visible_price_types = array_keys(wp_list_filter($cl_extras, array('visible' => true)));

		$new_terms_names = preg_filter('/^/', '_' . $owner_id . '_', $visible_price_types);

		// create term for every visible pricing type and link them to package so package can be queried
		wp_add_object_terms($package_id, $new_terms_names, '_wiaas_shop_prices');
	}

	// PRIVATE

	private static function _maybe_create_shop($owner_id) {
		$shop_name = 'wiaas_shop_' . $owner_id;

		$attribute_id = wc_attribute_taxonomy_id_by_name($shop_name);

		if ($attribute_id === 0) {
			// create shop attribute
			wc_create_attribute(array( 'slug' => $shop_name, 'name' => 'Catalogue' ));

			$taxonomy_name = wc_attribute_taxonomy_name($shop_name);

			register_taxonomy($taxonomy_name, array('product'));

			// add default catalogue option to shop attribute
			wp_insert_term( 'Default', $taxonomy_name);
		}
	}

	private static function _maybe_remove_shop($owner_id) {
		// get corresponding attribute for shop
		$attribute_id = wc_attribute_taxonomy_id_by_name('wiaas_shop_' . $owner_id);

		// if shop attribute exists then remove it
		if ($attribute_id > 0) {
			wc_delete_attribute($attribute_id);
		}
	}
}

Wiaas_Shop::init();