<?php

declare(strict_types=1);

namespace App\Tests\Unit\Scolarite\Domain\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\Domain\Model\Homework\Homework;
use App\Scolarite\Domain\Service\HomeworkDuplicator;
use App\Shared\Domain\Tenant\TenantId;
use DateTimeImmutable;
use PHPUnit\Framework\Attributes\Test;
use PHPUnit\Framework\TestCase;

final class HomeworkDuplicatorTest extends TestCase
{
    private const string TENANT_ID = '550e8400-e29b-41d4-a716-446655440001';
    private const string CLASS_ID = '550e8400-e29b-41d4-a716-446655440020';
    private const string SUBJECT_ID = '550e8400-e29b-41d4-a716-446655440030';
    private const string TEACHER_ID = '550e8400-e29b-41d4-a716-446655440010';
    private const string TARGET_CLASS_1 = '550e8400-e29b-41d4-a716-446655440021';
    private const string TARGET_CLASS_2 = '550e8400-e29b-41d4-a716-446655440022';

    private HomeworkDuplicator $duplicator;

    protected function setUp(): void
    {
        $this->duplicator = new HomeworkDuplicator();
    }

    #[Test]
    public function itDuplicatesHomeworkForOneTargetClass(): void
    {
        $source = $this->createSourceHomework();
        $now = new DateTimeImmutable('2026-03-14 10:00:00');
        $targetClassId = ClassId::fromString(self::TARGET_CLASS_1);
        $dueDate = new DateTimeImmutable('2026-04-20');

        $duplicates = $this->duplicator->dupliquer($source, [$targetClassId], [$dueDate], $now);

        self::assertCount(1, $duplicates);
        $duplicate = $duplicates[0];
        self::assertSame($source->title, $duplicate->title);
        self::assertSame($source->description, $duplicate->description);
        self::assertTrue($duplicate->classId->equals($targetClassId));
        self::assertTrue($duplicate->subjectId->equals($source->subjectId));
        self::assertTrue($duplicate->teacherId->equals($source->teacherId));
        self::assertTrue($duplicate->tenantId->equals($source->tenantId));
        self::assertSame('2026-04-20', $duplicate->dueDate->format('Y-m-d'));
    }

    #[Test]
    public function itDuplicatesHomeworkForMultipleTargetClasses(): void
    {
        $source = $this->createSourceHomework();
        $now = new DateTimeImmutable('2026-03-14 10:00:00');
        $targetClasses = [
            ClassId::fromString(self::TARGET_CLASS_1),
            ClassId::fromString(self::TARGET_CLASS_2),
        ];
        $dueDates = [
            new DateTimeImmutable('2026-04-20'),
            new DateTimeImmutable('2026-04-21'),
        ];

        $duplicates = $this->duplicator->dupliquer($source, $targetClasses, $dueDates, $now);

        self::assertCount(2, $duplicates);
        self::assertTrue($duplicates[0]->classId->equals($targetClasses[0]));
        self::assertTrue($duplicates[1]->classId->equals($targetClasses[1]));
        self::assertSame('2026-04-20', $duplicates[0]->dueDate->format('Y-m-d'));
        self::assertSame('2026-04-21', $duplicates[1]->dueDate->format('Y-m-d'));
    }

    #[Test]
    public function itCreatesIndependentCopiesWithUniqueIds(): void
    {
        $source = $this->createSourceHomework();
        $now = new DateTimeImmutable('2026-03-14 10:00:00');
        $targetClasses = [
            ClassId::fromString(self::TARGET_CLASS_1),
            ClassId::fromString(self::TARGET_CLASS_2),
        ];
        $dueDates = [
            new DateTimeImmutable('2026-04-20'),
            new DateTimeImmutable('2026-04-20'),
        ];

        $duplicates = $this->duplicator->dupliquer($source, $targetClasses, $dueDates, $now);

        self::assertFalse($duplicates[0]->id->equals($source->id));
        self::assertFalse($duplicates[1]->id->equals($source->id));
        self::assertFalse($duplicates[0]->id->equals($duplicates[1]->id));
    }

    #[Test]
    public function itRecordsDevoirCreeEventForEachDuplicate(): void
    {
        $source = $this->createSourceHomework();
        $now = new DateTimeImmutable('2026-03-14 10:00:00');
        $targetClasses = [
            ClassId::fromString(self::TARGET_CLASS_1),
            ClassId::fromString(self::TARGET_CLASS_2),
        ];
        $dueDates = [
            new DateTimeImmutable('2026-04-20'),
            new DateTimeImmutable('2026-04-20'),
        ];

        $duplicates = $this->duplicator->dupliquer($source, $targetClasses, $dueDates, $now);

        foreach ($duplicates as $duplicate) {
            $events = $duplicate->pullDomainEvents();
            self::assertCount(1, $events);
        }
    }

    #[Test]
    public function itUsesSourceDueDateWhenNoneProvided(): void
    {
        $source = $this->createSourceHomework();
        $now = new DateTimeImmutable('2026-03-14 10:00:00');
        $targetClassId = ClassId::fromString(self::TARGET_CLASS_1);

        $duplicates = $this->duplicator->dupliquer($source, [$targetClassId], [], $now);

        self::assertSame($source->dueDate->format('Y-m-d'), $duplicates[0]->dueDate->format('Y-m-d'));
    }

    #[Test]
    public function itPreservesNullDescription(): void
    {
        $source = $this->createSourceHomework(description: null);
        $now = new DateTimeImmutable('2026-03-14 10:00:00');
        $targetClassId = ClassId::fromString(self::TARGET_CLASS_1);

        $duplicates = $this->duplicator->dupliquer($source, [$targetClassId], [], $now);

        self::assertNull($duplicates[0]->description);
    }

    private function createSourceHomework(?string $description = 'Faire les exercices 1 à 10'): Homework
    {
        return Homework::creer(
            tenantId: TenantId::fromString(self::TENANT_ID),
            classId: ClassId::fromString(self::CLASS_ID),
            subjectId: SubjectId::fromString(self::SUBJECT_ID),
            teacherId: UserId::fromString(self::TEACHER_ID),
            title: 'Exercices chapitre 5',
            description: $description,
            dueDate: new DateTimeImmutable('2026-04-15'),
            now: new DateTimeImmutable('2026-03-12 10:00:00'),
        );
    }
}