<?php

namespace Twilio\TaskRouter;

use JsonSerializable;

/**
 * Twilio TaskRouter Workflow Builder
 *
 * @author Justin Witz <jwitz@twilio.com>
 * @license  http://creativecommons.org/licenses/MIT/ MIT
 */
class WorkflowConfiguration implements JsonSerializable {
	public $filters;
	public $default_filter;

	public function __construct($filters, $default_filter = null)
	{
		$this->filters = $filters;
		$this->default_filter = $default_filter;
	}

	public static function fromJson($json) {
		$configJSON = self::parse($json);
		$default_filter = $configJSON->task_routing->default_filter;
		$filters = array();
		foreach($configJSON->task_routing->filters as $filter) {
			// friendly_name and filter_friendly_name should map to same variable
			$friendly_name = isset($filter->filter_friendly_name) ? $filter->filter_friendly_name : $filter->friendly_name;
			$filter = new WorkflowRule($filter->expression, $filter->targets, $friendly_name);
			$filters[] = $filter;
		}
		return new WorkflowConfiguration($filters, $default_filter);
	}

	public static function parse($json) {
		return json_decode($json);
	}

	public function toJSON() {
		return json_encode($this);
	}

	public function jsonSerialize() {
		$json = array();
		$task_routing = array();
		$task_routing["filters"] = $this->filters;
		$task_routing["default_filter"] = $this->default_filter;
		$json["task_routing"] = $task_routing;
		return $json;
	}
}