<?php

require_once ('Config.php');
require_once ('Language.php');

/**
  * Service.php - manage service creation, update and deletes.
  */

class Service {
	var $config;

	var $id;
	var $name;
	var $code;
	var $result;
	var $quality;
	var $language;

	/**
	  * Service Constructor
	  * $service = new Service($config, $id);
	  *
	  * param $config Configuration class
	  * param $id When provided, grab all info for that service
	  */
	function Service ($config, $id="") {
		$this->config = $config;
		if ($id > 0) {
			$this->id = $id;
			$rows = $this->config->select("select id, name, code, result, quality, language from services where id = ?", $id);
			if (isset($rows[0]) && $rows[0]->id > 0) {
				$this->name = $rows[0]->name;
				$this->code = $rows[0]->code;
				$this->result = $rows[0]->result;
				$this->quality = $rows[0]->quality;
				$this->language = new Language($this->config, $rows[0]->language);
			} else {
				error_log("Service not found");
				return false;
			}
		}
		return true;
	}

	/**
	  * Create a new service if there's no service with that name yet.
	  * Construct object first.
	  * $service->create();
	  *
	  * param $name The service name
	  * param $language The language ID it's service uses
	  * param $code The code to run
	  * param $result The result regular expression, if match status is UP, else is DOWN
	  * param $quality The quality regular expression, the first match will be the quality
	  * return $id Newly created service's ID
	  */
	function create ($name, $language, $code, $result="", $quality="") {
		if ($this->config->select("select id from services where name = ?", $name))
			return false;
		else {
			$values = array($name, $code, $result, $quality, $language);
			$this->config->query("insert into services values (NULL, ?, ?, ?, ?, ?)", $values);
			$rows = $this->config->select("select last_insert_id() as id");
			$this->id = $rows[0]->id;
			$this->name = $name;
			$this->language = new Language($this->config, $language);
			$this->code = $code;
			$this->result = $result;
			$this->quality = $quality;
			return $this->id;
		}
	}

	/**
	  * Update the current service on the database using the current parameters.
	  * $service->name = "new service's name";
	  * $service->update()
	  */
	function update () {
		$values = array( $this->name, $this->code, $this->result, $this->quality, $this->language, $this->id );
		return $this->config->query("update services set name = ?, code = ?, result = ?, quality = ?, language = ? where id = ?", $values);
	}

	/**
	  * Delete the current service IF and only IF there's no probe using it.
	  * $service->delete();
	  */
	function delete () {
		$values = array( $this->id );
		if ($this->config->select("select id from probes where service_id = ?", $values))
			return null;
		return $this->config->query("delete from services where id = ?", $values);
	}

	/**
	  * Dumper.
	  * $service->dump();
	  */
	function dump () {
		print "\t\t* Service: $this->name\n";
		print "\t\t  Code: $this->code\n";
		print "\t\t  Result: $this->result\n";
		print "\t\t  Quality: $this->quality\n";
		print "\t\t  Delay: $this->delay\n";
		$this->language->dump();
	}
}
?>