<?php

declare(strict_types=1);

namespace App\Tests\Controller;

use App\Entity\Booking;
use App\Entity\Resource;
use App\Entity\ResourceGroup;
use App\Entity\User;
use App\Enum\ResourceType;
use App\Model\TimeRange;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Bundle\FrameworkBundle\KernelBrowser;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;

/**
 * What a shape on the floor plan says.
 *
 * Who holds what is listed inside the box rather than in an SVG <title>: a tooltip only shows on
 * hover, which is useless on touch and invisible when scanning the plan.
 */
class FloorPlanTest extends WebTestCase
{
    private KernelBrowser $client;
    private EntityManagerInterface $em;

    protected function setUp(): void
    {
        $this->client = self::createClient();
        $this->client->disableReboot();
        $this->em = self::getContainer()->get(EntityManagerInterface::class);
        $this->em->getConnection()->beginTransaction();
    }

    protected function tearDown(): void
    {
        $this->em->getConnection()->rollBack();
        parent::tearDown();
    }

    public function testNoShapeCarriesATooltip(): void
    {
        $desk = $this->desk('desk-01');
        $this->book($desk, $this->user('bea@ep-reisen.de', 'Bea Kranz'), 540, 780);

        $crawler = $this->board();

        self::assertCount(0, $crawler->filter('svg title'));
        self::assertCount(0, $crawler->filter('svg g title'));
    }

    public function testABookingIsListedInsideTheShape(): void
    {
        $desk = $this->desk('desk-01');
        $this->book($desk, $this->user('bea@ep-reisen.de', 'Bea Kranz'), 540, 780);

        self::assertSame(
            ['Schreibtisch 01', 'Bea K. 09:00–13:00', 'frei 13:00–24:00'],
            $this->linesOf($this->board()),
        );
    }

    /**
     * Full names do not fit a 140px box at this size, so they are shortened.
     */
    public function testALongNameIsShortenedToAFirstNameAndInitial(): void
    {
        $desk = $this->desk('desk-01');
        $this->book($desk, $this->user('x@ep-reisen.de', 'Maximilian Wolkenstein'), 0, 1440);

        self::assertContains('Maximilian W.', $this->linesOf($this->board()));
    }

    public function testASingleWordNameIsLeftAlone(): void
    {
        $desk = $this->desk('desk-01');
        $this->book($desk, $this->user('x@ep-reisen.de', 'Cher'), 0, 1440);

        self::assertContains('Cher', $this->linesOf($this->board()));
    }

    public function testYourOwnBookingReadsAsDu(): void
    {
        $desk = $this->desk('desk-01');
        $me = $this->user('anna@ep-reisen.de', 'Anna Berger');
        $this->book($desk, $me, 540, 780);

        self::assertContains('du 09:00–13:00', $this->linesOf($this->board($me)));
    }

    public function testAnAllDayBookingOmitsTheTimes(): void
    {
        $desk = $this->desk('desk-01');
        $this->book($desk, $this->user('bea@ep-reisen.de', 'Bea Kranz'), 0, 1440);

        self::assertSame(['Schreibtisch 01', 'Bea K.'], $this->linesOf($this->board()));
    }

    /**
     * A box fits three lines. More than that is summarised rather than allowed to spill out --
     * and the counter has to account for the line the counter itself occupies.
     */
    public function testTooManyBookingsAreSummarised(): void
    {
        $desk = $this->desk('desk-01');
        $this->book($desk, $this->user('a@ep-reisen.de', 'Ann Alpha'), 0, 360);
        $this->book($desk, $this->user('b@ep-reisen.de', 'Bea Beta'), 360, 720);
        $this->book($desk, $this->user('c@ep-reisen.de', 'Cem Gamma'), 720, 1080);
        $this->book($desk, $this->user('d@ep-reisen.de', 'Dia Delta'), 1080, 1440);

        $lines = $this->linesOf($this->board());

        self::assertSame(
            ['Schreibtisch 01', 'Ann A. 00:00–06:00', 'Bea B. 06:00–12:00', '+2 weitere'],
            $lines,
        );
        // Label plus MAX_LINES, never more.
        self::assertLessThanOrEqual(4, \count($lines));
    }

    public function testAFreeShapeShowsOnlyItsLabel(): void
    {
        $this->desk('desk-01');

        self::assertSame(['Schreibtisch 01'], $this->linesOf($this->board()));
    }

    /**
     * Screen readers get the same information the box shows, because role="img" on the <svg>
     * would otherwise hide every one of those <text> elements.
     */
    public function testTheShapeCarriesAnAccessibleLabel(): void
    {
        $desk = $this->desk('desk-01');
        $this->book($desk, $this->user('bea@ep-reisen.de', 'Bea Kranz'), 540, 780);

        $label = $this->board()->filter('svg g[aria-label]')->attr('aria-label');

        self::assertSame('Schreibtisch 01 — Bea K. 09:00–13:00, frei 13:00–24:00', $label);
    }

    public function testARoomIsDrawnWithItsNameAndHowManyAreFree(): void
    {
        $room = $this->room('Raum Nord', 'room-01');
        $this->deskIn($room, 'desk-01', 'Schreibtisch 01');
        $this->deskIn($room, 'desk-02', 'Schreibtisch 02');
        $this->deskIn($room, 'desk-03', 'Schreibtisch 03');

        self::assertSame(['Raum Nord · 3 frei'], $this->roomsOf($this->board()));
    }

    /**
     * The badge counts what can still be had for the whole span, so a desk that is free only in
     * the afternoon does not count -- it is already amber on the plan, and counting it would
     * make the number disagree with the colour beside it.
     */
    public function testAPartlyBookedDeskIsNotCountedAsFree(): void
    {
        $room = $this->room('Raum Nord', 'room-01');
        $partly = $this->deskIn($room, 'desk-01', 'Schreibtisch 01');
        $this->deskIn($room, 'desk-02', 'Schreibtisch 02');
        $this->book($partly, $this->user('bea@ep-reisen.de', 'Bea Kranz'), 540, 780);

        self::assertSame(['Raum Nord · 1 frei'], $this->roomsOf($this->board()));
    }

    /**
     * The count means the same thing as the colours beside it, so it is relative to the board's
     * span: the desk that is unavailable for the whole day is free for an afternoon board.
     */
    public function testTheFreeCountFollowsTheSelectedSpan(): void
    {
        $room = $this->room('Raum Nord', 'room-01');
        $desk = $this->deskIn($room, 'desk-01', 'Schreibtisch 01');
        $this->book($desk, $this->user('bea@ep-reisen.de', 'Bea Kranz'), 540, 780);

        self::assertSame(['Raum Nord · belegt'], $this->roomsOf($this->board()));
        self::assertSame(['Raum Nord · 1 frei'], $this->roomsOf($this->board(query: '&from=14:00&to=18:00')));
    }

    public function testARoomWithNothingLeftSaysSoInsteadOfShowingAZero(): void
    {
        $room = $this->room('Raum Nord', 'room-01');
        $desk = $this->deskIn($room, 'desk-01', 'Schreibtisch 01');
        $this->book($desk, $this->user('bea@ep-reisen.de', 'Bea Kranz'), 0, 1440);

        self::assertSame(['Raum Nord · belegt'], $this->roomsOf($this->board()));
    }

    public function testRoomsAreDrawnInTheirConfiguredOrder(): void
    {
        $this->deskIn($this->room('Zweiter Raum', 'room-02', 1), 'desk-04', 'Schreibtisch 04');
        $this->deskIn($this->room('Erster Raum', 'room-01', 0), 'desk-01', 'Schreibtisch 01');

        self::assertSame(['Erster Raum · 1 frei', 'Zweiter Raum · 1 frei'], $this->roomsOf($this->board()));
    }

    /**
     * A resource with no group is still bookable and still drawn -- the plan simply does not
     * frame it. That is the path the car park runs on.
     */
    public function testAnUngroupedDeskIsDrawnWithoutARoom(): void
    {
        $this->desk('desk-01');

        $crawler = $this->board();

        self::assertSame([], $this->roomsOf($crawler));
        self::assertSame(['Schreibtisch 01'], $this->linesOf($crawler));
    }

    /**
     * The room captions, which sit directly under the <svg> rather than inside a shape's <g>.
     *
     * @return list<string>
     */
    private function roomsOf(\Symfony\Component\DomCrawler\Crawler $crawler): array
    {
        return $crawler->filter('svg > text')->each(
            static fn (\Symfony\Component\DomCrawler\Crawler $node): string => trim(preg_replace('/\s+/', ' ', $node->text()) ?? ''),
        );
    }

    private function room(string $label, string $svgElementId, int $position = 0): ResourceGroup
    {
        $group = new ResourceGroup(ResourceType::DESK, $label, $position, $svgElementId);
        $this->em->persist($group);
        $this->em->flush();

        return $group;
    }

    private function deskIn(ResourceGroup $group, string $svgElementId, string $label): Resource
    {
        $resource = new Resource(ResourceType::DESK, $label, $svgElementId);
        $resource->setGroup($group);
        $this->em->persist($resource);
        $this->em->flush();

        return $resource;
    }

    /**
     * @return list<string>
     */
    private function linesOf(\Symfony\Component\DomCrawler\Crawler $crawler): array
    {
        return $crawler->filter('svg g text')->each(
            static fn (\Symfony\Component\DomCrawler\Crawler $node): string => trim($node->text()),
        );
    }

    private function board(?User $as = null, string $query = ''): \Symfony\Component\DomCrawler\Crawler
    {
        $this->client->loginUser($as ?? $this->user('anna@ep-reisen.de', 'Anna Berger'));

        return $this->client->request('GET', '/book/desk?date=2026-10-01'.$query);
    }

    private function desk(string $svgElementId): Resource
    {
        $resource = new Resource(ResourceType::DESK, 'Schreibtisch 01', $svgElementId);
        $this->em->persist($resource);
        $this->em->flush();

        return $resource;
    }

    private function book(Resource $resource, User $user, int $start, int $end): void
    {
        $this->em->persist(new Booking($user, $resource, new \DateTimeImmutable('2026-10-01'), TimeRange::fromMinutes($start, $end)));
        $this->em->flush();
    }

    private function user(string $email, string $name): User
    {
        $existing = $this->em->getRepository(User::class)->findOneBy(['email' => $email]);
        if (null !== $existing) {
            return $existing;
        }

        $user = new User($email, $name);
        $user->setRoles(['ROLE_EMPLOYEE']);
        $this->em->persist($user);
        $this->em->flush();

        return $user;
    }
}