<?php

declare(strict_types=1);

namespace App\Tests\Unit\Scolarite\Application\Service;

use App\Administration\Domain\Model\SchoolClass\ClassId;
use App\Administration\Domain\Model\Subject\SubjectId;
use App\Administration\Domain\Model\User\UserId;
use App\Scolarite\Application\Port\EnseignantAffectationChecker;
use App\Scolarite\Application\Service\AutorisationSaisieNotesChecker;
use App\Scolarite\Domain\Model\Evaluation\Coefficient;
use App\Scolarite\Domain\Model\Evaluation\Evaluation;
use App\Scolarite\Domain\Model\Evaluation\GradeScale;
use App\Scolarite\Domain\Model\TeacherReplacement\ClassSubjectPair;
use App\Scolarite\Domain\Model\TeacherReplacement\TeacherReplacement;
use App\Scolarite\Infrastructure\Persistence\InMemory\InMemoryTeacherReplacementRepository;
use App\Shared\Domain\Tenant\TenantId;
use DateTimeImmutable;
use PHPUnit\Framework\Attributes\Test;
use PHPUnit\Framework\TestCase;

final class AutorisationSaisieNotesCheckerTest extends TestCase
{
    private TenantId $tenantId;
    private ClassId $classId;
    private SubjectId $subjectId;
    private InMemoryTeacherReplacementRepository $replacementRepository;
    private DateTimeImmutable $now;

    /** @var array<string, bool> */
    private array $affectationResults = [];

    protected function setUp(): void
    {
        $this->tenantId = TenantId::generate();
        $this->classId = ClassId::generate();
        $this->subjectId = SubjectId::generate();
        $this->replacementRepository = new InMemoryTeacherReplacementRepository();
        $this->now = new DateTimeImmutable('2026-04-14 10:00:00');
    }

    #[Test]
    public function itReturnsTrueWhenTeacherIsAffected(): void
    {
        $teacherId = UserId::generate();
        $this->setTeacherAffecte($teacherId);

        $checker = $this->createChecker();
        $evaluation = $this->createEvaluation();

        self::assertTrue($checker->peutSaisirNotes($teacherId, $evaluation, $this->tenantId, $this->now));
    }

    #[Test]
    public function itReturnsFalseWhenTeacherIsNotAffectedAndNoReplacement(): void
    {
        $teacherId = UserId::generate();

        $checker = $this->createChecker();
        $evaluation = $this->createEvaluation();

        self::assertFalse($checker->peutSaisirNotes($teacherId, $evaluation, $this->tenantId, $this->now));
    }

    #[Test]
    public function itReturnsTrueWhenTeacherHasActiveReplacement(): void
    {
        $replacementTeacherId = UserId::generate();
        $this->createActiveReplacement($replacementTeacherId);

        $checker = $this->createChecker();
        $evaluation = $this->createEvaluation();

        self::assertTrue($checker->peutSaisirNotes($replacementTeacherId, $evaluation, $this->tenantId, $this->now));
    }

    #[Test]
    public function itReturnsFalseWhenReplacementIsExpired(): void
    {
        $replacementTeacherId = UserId::generate();
        $this->createExpiredReplacement($replacementTeacherId);

        $checker = $this->createChecker();
        $evaluation = $this->createEvaluation();

        self::assertFalse($checker->peutSaisirNotes($replacementTeacherId, $evaluation, $this->tenantId, $this->now));
    }

    #[Test]
    public function itReturnsTrueWhenBothAffectedAndActiveReplacement(): void
    {
        $teacherId = UserId::generate();
        $this->setTeacherAffecte($teacherId);
        $this->createActiveReplacement($teacherId);

        $checker = $this->createChecker();
        $evaluation = $this->createEvaluation();

        self::assertTrue($checker->peutSaisirNotes($teacherId, $evaluation, $this->tenantId, $this->now));
    }

    #[Test]
    public function itReturnsFalseWhenReplacementIsOnDifferentClassSubject(): void
    {
        $replacementTeacherId = UserId::generate();

        $otherClassId = ClassId::generate();
        $otherSubjectId = SubjectId::generate();
        $replacement = TeacherReplacement::designer(
            tenantId: $this->tenantId,
            replacedTeacherId: UserId::generate(),
            replacementTeacherId: $replacementTeacherId,
            startDate: $this->now->modify('-1 day'),
            endDate: $this->now->modify('+7 days'),
            classes: [new ClassSubjectPair($otherClassId, $otherSubjectId)],
            reason: 'Maladie',
            createdBy: UserId::generate(),
            now: $this->now->modify('-1 day'),
        );
        $this->replacementRepository->save($replacement);

        $checker = $this->createChecker();
        $evaluation = $this->createEvaluation();

        self::assertFalse($checker->peutSaisirNotes($replacementTeacherId, $evaluation, $this->tenantId, $this->now));
    }

    #[Test]
    public function itReturnsFalseWhenReplacementStartsInTheFuture(): void
    {
        $replacementTeacherId = UserId::generate();
        $futureStart = $this->now->modify('+1 day');

        $replacement = TeacherReplacement::designer(
            tenantId: $this->tenantId,
            replacedTeacherId: UserId::generate(),
            replacementTeacherId: $replacementTeacherId,
            startDate: $futureStart,
            endDate: $this->now->modify('+14 days'),
            classes: [new ClassSubjectPair($this->classId, $this->subjectId)],
            reason: 'Congé prévu',
            createdBy: UserId::generate(),
            now: $this->now,
        );
        $this->replacementRepository->save($replacement);

        $checker = $this->createChecker();
        $evaluation = $this->createEvaluation();

        self::assertFalse($checker->peutSaisirNotes($replacementTeacherId, $evaluation, $this->tenantId, $this->now));
    }

    #[Test]
    public function itShortCircuitsOnAffectationWithoutCheckingReplacement(): void
    {
        $teacherId = UserId::generate();
        $this->setTeacherAffecte($teacherId);

        // No replacement seeded — if it tries to check replacement for an
        // assigned teacher, the result should still be true (short-circuit)
        $checker = $this->createChecker();
        $evaluation = $this->createEvaluation();

        self::assertTrue($checker->peutSaisirNotes($teacherId, $evaluation, $this->tenantId, $this->now));
    }

    private function setTeacherAffecte(UserId $teacherId): void
    {
        $this->affectationResults[(string) $teacherId] = true;
    }

    private function createChecker(): AutorisationSaisieNotesChecker
    {
        $test = $this;
        $affectationChecker = new class($test) implements EnseignantAffectationChecker {
            public function __construct(private readonly AutorisationSaisieNotesCheckerTest $test)
            {
            }

            public function estAffecte(
                UserId $teacherId,
                ClassId $classId,
                SubjectId $subjectId,
                TenantId $tenantId,
            ): bool {
                return $this->test->isTeacherAffecte((string) $teacherId);
            }
        };

        return new AutorisationSaisieNotesChecker(
            $affectationChecker,
            $this->replacementRepository,
        );
    }

    public function isTeacherAffecte(string $teacherId): bool
    {
        return $this->affectationResults[$teacherId] ?? false;
    }

    private function createEvaluation(): Evaluation
    {
        return Evaluation::creer(
            tenantId: $this->tenantId,
            classId: $this->classId,
            subjectId: $this->subjectId,
            teacherId: UserId::generate(),
            title: 'Contrôle de maths',
            description: null,
            evaluationDate: $this->now,
            gradeScale: new GradeScale(20),
            coefficient: new Coefficient(1.0),
            now: $this->now,
        );
    }

    private function createActiveReplacement(UserId $replacementTeacherId): void
    {
        $replacement = TeacherReplacement::designer(
            tenantId: $this->tenantId,
            replacedTeacherId: UserId::generate(),
            replacementTeacherId: $replacementTeacherId,
            startDate: $this->now->modify('-1 day'),
            endDate: $this->now->modify('+7 days'),
            classes: [new ClassSubjectPair($this->classId, $this->subjectId)],
            reason: 'Maladie',
            createdBy: UserId::generate(),
            now: $this->now->modify('-1 day'),
        );
        $this->replacementRepository->save($replacement);
    }

    private function createExpiredReplacement(UserId $replacementTeacherId): void
    {
        $replacement = TeacherReplacement::designer(
            tenantId: $this->tenantId,
            replacedTeacherId: UserId::generate(),
            replacementTeacherId: $replacementTeacherId,
            startDate: $this->now->modify('-14 days'),
            endDate: $this->now->modify('-1 day'),
            classes: [new ClassSubjectPair($this->classId, $this->subjectId)],
            reason: 'Maladie',
            createdBy: UserId::generate(),
            now: $this->now->modify('-14 days'),
        );
        $this->replacementRepository->save($replacement);
    }
}