<?php

declare(strict_types=1);

namespace App\Tests\Service\Teamer;

use App\Model\TeamerMailingDto;
use App\Service\Teamer\TeamerMailingDraftHandler;
use PHPUnit\Framework\TestCase;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpFoundation\Session\Session;
use Symfony\Component\HttpFoundation\Session\Storage\MockArraySessionStorage;

class TeamerMailingDraftHandlerTest extends TestCase
{
    private TeamerMailingDraftHandler $handler;

    protected function setUp(): void
    {
        $request = new Request();
        $request->setSession(new Session(new MockArraySessionStorage()));

        $requestStack = new RequestStack([$request]);

        $this->handler = new TeamerMailingDraftHandler($requestStack);
    }

    public function testANewMailingOpensWithTheGreeting(): void
    {
        $draft = $this->handler->getDraft();

        $this->assertNull($draft->getSubject());
        $this->assertSame(TeamerMailingDraftHandler::NEW_MESSAGE, $draft->getMessage());
    }

    public function testSavedDraftSurvivesUntilItIsReset(): void
    {
        $this->handler->saveDraft(
            (new TeamerMailingDto())
                ->setSubject('Wintersaison {{vorname}}')
                ->setMessage("Hallo {{vorname}},\n\nzweite Zeile.")
        );

        $draft = $this->handler->getDraft();

        $this->assertSame('Wintersaison {{vorname}}', $draft->getSubject());
        $this->assertSame("Hallo {{vorname}},\n\nzweite Zeile.", $draft->getMessage());

        $this->handler->resetDraft();

        // discarding brings back the starting point of a new mailing, not a blank page
        $this->assertNull($this->handler->getDraft()->getSubject());
        $this->assertSame(TeamerMailingDraftHandler::NEW_MESSAGE, $this->handler->getDraft()->getMessage());
        $this->assertFalse($this->handler->hasDraft());
    }

    public function testAHalfWrittenDraftIsKeptAsItIs(): void
    {
        $this->handler->saveDraft((new TeamerMailingDto())->setSubject('nur ein Betreff'));

        $draft = $this->handler->getDraft();

        // an emptied message stays empty, the greeting is only the starting point
        $this->assertSame('nur ein Betreff', $draft->getSubject());
        $this->assertNull($draft->getMessage());
        $this->assertTrue($this->handler->hasDraft());
    }
}