<?php
/**
* @author Jorge Patricio Castro Castillo <jcastro arroba eftec dot cl>
* @link https://github.com/EFTEC/StateMachineOne
*/
use eftec\statemachineone\Job;
use eftec\statemachineone\StateMachineOne;
use eftec\statemachineone\Transition;
// we use autoload's composer, so we call it here.
include "../vendor/autoload.php";
$smachine=new StateMachineOne(null);
$smachine->setDebug(true);
// it is specific for this project
define('INITIAL_STATE',1);
define('DRIVING_TO_BUY_MILK',2);
define('CANCEL_DRIVING',3);
define('PICKING_THE_MILK',4);
define('PAYING_FOR_THE_MILK',5);
define('UNABLE_TO_PURCHASE',6);
define('DRIVE_BACK_HOME',7);
$smachine->setDefaultInitState(INITIAL_STATE);
$smachine->setStates([
INITIAL_STATE=>'Initial State',
DRIVING_TO_BUY_MILK=>'Driving to buy milk',
CANCEL_DRIVING=>'Cancel driving.',
PICKING_THE_MILK=>'Picking the milk',
PAYING_FOR_THE_MILK=>'Paying for the milk',
UNABLE_TO_PURCHASE=>'Unable to purchase',
DRIVE_BACK_HOME=>'Drive back home.'
]);
$smachine->fieldDefault=[
'milk'=>0
,'money'=>9999
,'price'=>null
,'stock_milk'=>null
,'store_open'=>null
,'gas'=>10];
// database configuration
$smachine->tableJobs="buymilk_jobs";
$smachine->tableJobLogs="buymilk_logs"; // it is optional
$smachine->setdb('mysql','localhost',"root","abc.123","statemachinedb");
$smachine->createDbTable(false); // you don't need to create this table every time.
$smachine->loadDBAllJob(); // we load all jobs, including finished ones.
//$smachine->loadDBActiveJobs(); // use this in production, we don't need stopped job every time.
// business rules
$smachine->addTransition(INITIAL_STATE,DRIVING_TO_BUY_MILK
,'when milk = 0 and gas > 0');
$smachine->addTransition(INITIAL_STATE,CANCEL_DRIVING
,'when gas = 0','stop'); // null means, no timeout and stop means, the job will stop
$smachine->addTransition(DRIVING_TO_BUY_MILK,PICKING_THE_MILK
,'when store_open = 1 and stock_milk > 0');
$smachine->addTransition(DRIVING_TO_BUY_MILK,UNABLE_TO_PURCHASE
,'when store_open = 0 or stock_milk = 0');
$smachine->addTransition(PICKING_THE_MILK,PAYING_FOR_THE_MILK
,'when money >= price set milk = 1');
$smachine->addTransition(PICKING_THE_MILK,UNABLE_TO_PURCHASE
,'when money < price');
$smachine->addTransition(UNABLE_TO_PURCHASE,DRIVE_BACK_HOME
,'when always','stop');
$smachine->addTransition(PAYING_FOR_THE_MILK,DRIVE_BACK_HOME
,'when always','stop');
$msg=$smachine->fetchUI(); // we show a visual id (it is optional and it's only for debug purpose)
$smachine->checkAllJobs(); // we check every (active,pause,continue) job available.
$smachine->viewUI(null,$msg); // null means it takes the current job
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