PHP code example of mead-steve / tale

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

mead-steve / tale example snippets

class DebitCustomerBalanceStep implements Step
{
    //.. Some constructor logic for initialising the api etc...
    
    public function execute(CustomerPurchase $state)
    {
        $paymentId = $this->customerApi->debit($state->Amount);
        return $state->markAsPaid($paymentId);
    }

    public function compensate($state): void
    {
        $this->customerApi->refundAccountForPayment($state->paymentId)
    }

class BookFlightStep implements Step
{
    //.. Some constructor logic for initialising the api etc...
    
    public function execute(FlightPurchase $state)
    {
        $flightsBookingRef = $this->flightApi->buildBooking(
            $state->Destination, 
            $state->Origin,
            self::RETURN,
            $this->airline
        );
        if ($flightsBookingRef=== null) {
            raise \Exception("Unable to book flights");
        }
        return $state->flightsBooked($flightsBookingRef);
    }

    public function compensate($state): void
    {
        $this->customerApi->cancelFlights($state->flightsBookingRef)
    }

       $transaction = (new Transaction())
            ->add(new DebitCustomerBalance($user))
            ->add(new BookFlightStep($airlineOfChoice))
            ->add(new BookHotelStep())
            ->add(new EmailCustomerDetailsOfBookingStep())

        $result = $transaction
            ->run($startingData)
            ->throwFailures()
            ->finalState();

        class FakeState implements CloneableState
        {
                public function cloneState()
                {
                    return clone $this;
                }
        }
        
        $stepOne = new LambdaStep(
            function (MyStateExample $state) {
                $state->mutateTheState = "step one"
                return $state;
            }
        );
        $stepTwo = new LambdaStep(
            function (MyStateExample $state) {
                $state->mutateTheState = "step two"
                return $state;
            }
        );
        $transaction = (new Transaction())
            ->add($stepOne)
            ->add($stepTwo);

        $startingState = new MyStateExample();
        $finalState = $transaction->run($startingState)->finalState();