<?php

declare(strict_types=1);

/*
 * Chill is a software for social workers
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Services\Workflow;

use Chill\MainBundle\Entity\User;
use Chill\MainBundle\Entity\Workflow\EntityWorkflow;
use Chill\MainBundle\Repository\Workflow\EntityWorkflowRepository;
use Chill\MainBundle\Service\Workflow\CancelStaleWorkflowHandler;
use Chill\MainBundle\Service\Workflow\CancelStaleWorkflowMessage;
use Chill\MainBundle\Workflow\EntityWorkflowMarkingStore;
use Chill\MainBundle\Workflow\WorkflowTransitionContextDTO;
use Doctrine\ORM\EntityManagerInterface;
use PHPUnit\Framework\TestCase;
use Prophecy\PhpUnit\ProphecyTrait;
use Psr\Log\NullLogger;
use Symfony\Component\Clock\ClockInterface;
use Symfony\Component\Clock\MockClock;
use Symfony\Component\Messenger\Exception\UnrecoverableMessageHandlingException;
use Symfony\Component\Workflow\DefinitionBuilder;
use Symfony\Component\Workflow\Metadata\InMemoryMetadataStore;
use Symfony\Component\Workflow\Registry;
use Symfony\Component\Workflow\SupportStrategy\WorkflowSupportStrategyInterface;
use Symfony\Component\Workflow\Transition;
use Symfony\Component\Workflow\Workflow;
use Symfony\Component\Workflow\WorkflowInterface;

/**
 * @internal
 *
 * @coversNothing
 */
class CancelStaleWorkflowHandlerTest extends TestCase
{
    use ProphecyTrait;

    public function testWorkflowWithOneStepOlderThan90DaysIsCanceled(): void
    {
        $clock = new MockClock('2024-01-01');
        $daysAgos = new \DateTimeImmutable('2023-09-01');

        $workflow = new EntityWorkflow();
        $workflow->setWorkflowName('dummy_workflow');
        $workflow->setCreatedAt(new \DateTimeImmutable('2023-09-01'));
        $workflow->setStep('step1', new WorkflowTransitionContextDTO($workflow), 'to_step1', $daysAgos, new User());

        $em = $this->prophesize(EntityManagerInterface::class);
        $em->flush()->shouldBeCalled();
        $em->remove($workflow)->shouldNotBeCalled();

        $handler = $this->buildHandler($workflow, $em->reveal(), $clock);

        $handler(new CancelStaleWorkflowMessage(1));

        self::assertEquals('canceled', $workflow->getStep());
        self::assertCount(3, $workflow->getSteps());
    }

    public function testWorkflowNotInStaledHandlerIsUnrecoverable(): void
    {
        $this->expectException(UnrecoverableMessageHandlingException::class);

        $clock = new MockClock('2024-01-01');
        $daysAgos = new \DateTimeImmutable('2023-12-31');

        $workflow = new EntityWorkflow();
        $workflow->setWorkflowName('dummy_workflow');
        $workflow->setCreatedAt(new \DateTimeImmutable('2023-12-31'));
        $workflow->setStep('step1', new WorkflowTransitionContextDTO($workflow), 'to_step1', $daysAgos, new User());

        $em = $this->prophesize(EntityManagerInterface::class);
        $em->flush()->shouldNotBeCalled();
        $em->remove($workflow)->shouldNotBeCalled();

        $handler = $this->buildHandler($workflow, $em->reveal(), $clock);

        $handler(new CancelStaleWorkflowMessage(1));

        self::assertEquals('canceled', $workflow->getStep());
        self::assertCount(3, $workflow->getSteps());
    }

    public function testWorkflowStaledInInitialStateIsCompletelyRemoved(): void
    {
        $clock = new MockClock('2024-01-01');

        $workflow = new EntityWorkflow();
        $workflow->setWorkflowName('dummy_workflow');
        $workflow->setCreatedAt(new \DateTimeImmutable('2023-09-01'));

        $em = $this->prophesize(EntityManagerInterface::class);
        $em->flush()->shouldBeCalled();
        $em->remove($workflow)->shouldNotBeCalled();

        $handler = $this->buildHandler($workflow, $em->reveal(), $clock);

        $handler(new CancelStaleWorkflowMessage(1));

        self::assertEquals('canceled', $workflow->getStep());
        self::assertCount(2, $workflow->getSteps());
    }

    private function buildHandler(
        EntityWorkflow $entityWorkflow,
        EntityManagerInterface $entityManager,
        ClockInterface $clock,
    ): CancelStaleWorkflowHandler {
        // set an id for the workflow
        $reflection = new \ReflectionClass($entityWorkflow);
        $reflection->getProperty('id')->setValue($entityWorkflow, 1);

        $repository = $this->prophesize(EntityWorkflowRepository::class);
        $repository->find(1)->willReturn($entityWorkflow);

        return new CancelStaleWorkflowHandler($repository->reveal(), $this->buildRegistry(), $entityManager, new NullLogger(), $clock);
    }

    private function buildRegistry(): Registry
    {
        $definitionBuilder = new DefinitionBuilder();

        $definitionBuilder
            ->setInitialPlaces('initial')
            ->addPlaces(['initial', 'step1', 'canceled', 'final'])
            ->addTransition(new Transition('to_step1', 'initial', 'step1'))
            ->addTransition(new Transition('cancel', 'initial', 'canceled'))
            ->addTransition(new Transition('finalize', 'initial', 'final'))
            ->addTransition(new Transition('cancel', 'step1', 'canceled'))
            ->addTransition(new Transition('finalize', 'step1', 'final'));

        $definitionBuilder->setMetadataStore(new InMemoryMetadataStore(placesMetadata: [
            'canceled' => [
                'isFinal' => true,
                'isFinalPositive' => false,
            ],
            'final' => [
                'isFinal' => true,
                'isFinalPositive', true,
            ],
        ]));

        $workflow = new Workflow($definitionBuilder->build(), new EntityWorkflowMarkingStore(), null, 'dummy_workflow');
        $supports =
            new class () implements WorkflowSupportStrategyInterface {
                public function supports(WorkflowInterface $workflow, object $subject): bool
                {
                    return true;
                }
            };


        $registry = new Registry();
        $registry->addWorkflow($workflow, $supports);

        return $registry;
    }
}
