<?php
/**
 * Amazing Fullfilment Integration for WooCommerce - rules class
 *
 * @author dejo-commerce
 * @copyright Copyright (c) 2017 dejo-commerce (https://www.dejo-commerce.com)
 * @license http://www.gnu.org/licenses/gpl-2.0.html
 */
class AmzFulfillment_Rules {
	const CONFIG_OPTION = 'amzFulfillmentRules';
	private $rules = array();

	public function load() {
		$this->rules = $this->rules = get_option(self::CONFIG_OPTION, NULL);
		if($this->rules === NULL) {
			$this->defaults();
		}
	}

	public function save() {
		update_option(self::CONFIG_OPTION, $this->rules);
	}

	public function getAll() {
		return $this->rules;
	}

	public function getActions($event) {
		$actions = array();
		foreach($this->rules as $rule) {
			if($rule['event'] == $event) {
				$actions[] = $rule['action'];
			}
		}
		return $actions;
	}

	public function set($rules) {
		if(!is_array($rules)) {
			throw new InvalidArgumentException('rules needs to be array');
		}
		foreach($rules as $rule) {
			if(!isset($rule['event']) || !isset($rule['action'])) {
				throw new InvalidArgumentException('rules needs an event and action');
			}
			$event = $rule['event'];
			$action = $rule['action'];
			if(!array_key_exists($event, AmzFulfillment_Event::$events)) {
				throw new InvalidArgumentException('Unknown event id: ' . $event);
			}
			if(!array_key_exists($action, AmzFulfillment_Action::$actions)) {
				throw new InvalidArgumentException('Unknown action id: ' . $action);
			}
		}
		$this->rules = $rules;
	}

	public function setByArrays($eventArray, $actionArray) {
		$rules = array();
		for($i = 0; $i < count($eventArray); $i++) {
			if(!isset($eventArray[$i]) || !isset($actionArray[$i])) {
				break;
			}
			$event = $eventArray[$i];
			$action = $actionArray[$i];
			if(empty($event) || empty($action)) {
				continue;
			}
			$rules[] = array(
					'event' => $event,
					'action' => $action
			);
		}
		$this->set($rules);
	}

	public function defaults() {
		$this->rules = array(
				array(
						'event' => AmzFulfillment_Event::WOOCOMMERCE_ORDER_PROCESSING,
						'action' => AmzFulfillment_Action::AMAZON_FULFILLMENT_CREATE
				),
				array(
						'event' => AmzFulfillment_Event::AMAZON_FULFILLMENT_CANCELLED,
						'action' => AmzFulfillment_Action::WOOCOMMERCE_ORDER_CANCELLED
				),
				array(
						'event' => AmzFulfillment_Event::AMAZON_FULFILLMENT_INVALID,
						'action' => AmzFulfillment_Action::WOOCOMMERCE_ORDER_FAILED
				),
				array(
						'event' => AmzFulfillment_Event::AMAZON_FULFILLMENT_COMPLETE,
						'action' => AmzFulfillment_Action::WOOCOMMERCE_ORDER_COMPLETED
				),
				array(
						'event' => AmzFulfillment_Event::AMAZON_FULFILLMENT_UNFULFILLABLE,
						'action' => AmzFulfillment_Action::WOOCOMMERCE_ORDER_FAILED
				)
		);
	}
}