<?php

declare(strict_types=1);

namespace App\Tests\Functional\Scolarite\Api;

use ApiPlatform\Symfony\Bundle\Test\ApiTestCase;
use App\Administration\Domain\Model\SchoolClass\ClassId;
use App\Administration\Domain\Model\Subject\SubjectId;
use App\Administration\Domain\Model\User\UserId;
use App\Administration\Infrastructure\Security\SecurityUser;
use App\Scolarite\Domain\Model\Evaluation\Coefficient;
use App\Scolarite\Domain\Model\Evaluation\Evaluation;
use App\Scolarite\Domain\Model\Evaluation\EvaluationId;
use App\Scolarite\Domain\Model\Evaluation\GradeScale;
use App\Scolarite\Domain\Model\Grade\Grade;
use App\Scolarite\Domain\Model\Grade\GradeStatus;
use App\Scolarite\Domain\Model\Grade\GradeValue;
use App\Scolarite\Domain\Repository\EvaluationRepository;
use App\Scolarite\Domain\Repository\EvaluationStatisticsRepository;
use App\Scolarite\Domain\Repository\GradeRepository;
use App\Scolarite\Domain\Repository\StudentAverageRepository;
use App\Scolarite\Domain\Service\AverageCalculator;
use App\Shared\Domain\Tenant\TenantId;
use DateTimeImmutable;
use Doctrine\DBAL\Connection;
use PHPUnit\Framework\Attributes\Test;

final class MoyennesEndpointsTest extends ApiTestCase
{
    protected static ?bool $alwaysBootKernel = true;

    private const string TENANT_ID = 'a1b2c3d4-e5f6-7890-abcd-ef1234567890';
    private const string TEACHER_ID = '44444444-4444-4444-4444-444444444444';
    private const string OTHER_TEACHER_ID = '44444444-4444-4444-4444-444444444445';
    private const string STUDENT_ID = '22222222-2222-2222-2222-222222222222';
    private const string CLASS_ID = '55555555-5555-5555-5555-555555555555';
    private const string SUBJECT_ID = '66666666-6666-6666-6666-666666666666';
    private const string PERIOD_ID = '11111111-1111-1111-1111-111111111111';
    private const string BASE_URL = 'http://ecole-alpha.classeo.local/api';

    private ?EvaluationId $evaluationId = null;

    protected function setUp(): void
    {
        parent::setUp();
        $this->seedFixtures();
    }

    protected function tearDown(): void
    {
        /** @var Connection $connection */
        $connection = static::getContainer()->get(Connection::class);
        $connection->executeStatement('DELETE FROM evaluation_statistics WHERE evaluation_id IN (SELECT id FROM evaluations WHERE tenant_id = :tid)', ['tid' => self::TENANT_ID]);
        $connection->executeStatement('DELETE FROM student_general_averages WHERE tenant_id = :tid', ['tid' => self::TENANT_ID]);
        $connection->executeStatement('DELETE FROM student_averages WHERE tenant_id = :tid', ['tid' => self::TENANT_ID]);
        $connection->executeStatement('DELETE FROM grades WHERE tenant_id = :tid', ['tid' => self::TENANT_ID]);
        $connection->executeStatement('DELETE FROM evaluations WHERE tenant_id = :tid', ['tid' => self::TENANT_ID]);

        parent::tearDown();
    }

    // =========================================================================
    // GET /evaluations/{id}/statistics — Auth
    // =========================================================================

    #[Test]
    public function getEvaluationStatisticsReturns401WithoutAuthentication(): void
    {
        $client = static::createClient();
        $client->request('GET', self::BASE_URL . '/evaluations/' . $this->evaluationId . '/statistics', [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseStatusCodeSame(401);
    }

    #[Test]
    public function getEvaluationStatisticsReturns403ForNonOwner(): void
    {
        $client = $this->createAuthenticatedClient(self::OTHER_TEACHER_ID, ['ROLE_PROF']);
        $client->request('GET', self::BASE_URL . '/evaluations/' . $this->evaluationId . '/statistics', [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseStatusCodeSame(403);
    }

    // =========================================================================
    // GET /evaluations/{id}/statistics — Happy path
    // =========================================================================

    #[Test]
    public function getEvaluationStatisticsReturnsStatsForOwner(): void
    {
        $client = $this->createAuthenticatedClient(self::TEACHER_ID, ['ROLE_PROF']);
        $client->request('GET', self::BASE_URL . '/evaluations/' . $this->evaluationId . '/statistics', [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseIsSuccessful();
        self::assertJsonContains([
            'evaluationId' => (string) $this->evaluationId,
            'gradedCount' => 2,
        ]);
    }

    #[Test]
    public function getEvaluationStatisticsReturns404ForUnknownEvaluation(): void
    {
        $client = $this->createAuthenticatedClient(self::TEACHER_ID, ['ROLE_PROF']);
        $unknownId = (string) EvaluationId::generate();
        $client->request('GET', self::BASE_URL . '/evaluations/' . $unknownId . '/statistics', [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseStatusCodeSame(404);
    }

    // =========================================================================
    // GET /students/{id}/averages — Auth
    // =========================================================================

    #[Test]
    public function getStudentAveragesReturns401WithoutAuthentication(): void
    {
        $client = static::createClient();
        $client->request('GET', self::BASE_URL . '/students/' . self::STUDENT_ID . '/averages?periodId=' . self::PERIOD_ID, [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseStatusCodeSame(401);
    }

    #[Test]
    public function getStudentAveragesReturns403ForUnrelatedParent(): void
    {
        $parentId = '88888888-8888-8888-8888-888888888888';
        $client = $this->createAuthenticatedClient($parentId, ['ROLE_PARENT']);
        $client->request('GET', self::BASE_URL . '/students/' . self::STUDENT_ID . '/averages?periodId=' . self::PERIOD_ID, [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseStatusCodeSame(403);
    }

    // =========================================================================
    // GET /students/{id}/averages — Happy path
    // =========================================================================

    #[Test]
    public function getStudentAveragesReturnsDataForStaff(): void
    {
        $client = $this->createAuthenticatedClient(self::TEACHER_ID, ['ROLE_PROF']);
        $client->request('GET', self::BASE_URL . '/students/' . self::STUDENT_ID . '/averages?periodId=' . self::PERIOD_ID, [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseIsSuccessful();
        self::assertJsonContains([
            'studentId' => self::STUDENT_ID,
            'periodId' => self::PERIOD_ID,
        ]);
    }

    #[Test]
    public function getStudentAveragesReturnsOwnDataForStudent(): void
    {
        $client = $this->createAuthenticatedClient(self::STUDENT_ID, ['ROLE_ELEVE']);
        $client->request('GET', self::BASE_URL . '/students/' . self::STUDENT_ID . '/averages?periodId=' . self::PERIOD_ID, [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseIsSuccessful();
        self::assertJsonContains([
            'studentId' => self::STUDENT_ID,
        ]);
    }

    // =========================================================================
    // GET /classes/{id}/statistics — Auth
    // =========================================================================

    #[Test]
    public function getClassStatisticsReturns401WithoutAuthentication(): void
    {
        $client = static::createClient();
        $client->request('GET', self::BASE_URL . '/classes/' . self::CLASS_ID . '/statistics', [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseStatusCodeSame(401);
    }

    #[Test]
    public function getClassStatisticsReturns403ForStudent(): void
    {
        $client = $this->createAuthenticatedClient(self::STUDENT_ID, ['ROLE_ELEVE']);
        $client->request('GET', self::BASE_URL . '/classes/' . self::CLASS_ID . '/statistics', [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseStatusCodeSame(403);
    }

    #[Test]
    public function getClassStatisticsReturns403ForParent(): void
    {
        $parentId = '88888888-8888-8888-8888-888888888888';
        $client = $this->createAuthenticatedClient($parentId, ['ROLE_PARENT']);
        $client->request('GET', self::BASE_URL . '/classes/' . self::CLASS_ID . '/statistics', [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseStatusCodeSame(403);
    }

    // =========================================================================
    // GET /classes/{id}/statistics — Happy path
    // =========================================================================

    #[Test]
    public function getClassStatisticsReturnsDataForTeacher(): void
    {
        $client = $this->createAuthenticatedClient(self::TEACHER_ID, ['ROLE_PROF']);
        $client->request('GET', self::BASE_URL . '/classes/' . self::CLASS_ID . '/statistics', [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseIsSuccessful();
        self::assertJsonContains([
            'classId' => self::CLASS_ID,
        ]);
    }

    #[Test]
    public function getClassStatisticsReturnsDataForAdmin(): void
    {
        $adminId = '99999999-9999-9999-9999-999999999999';
        $client = $this->createAuthenticatedClient($adminId, ['ROLE_ADMIN']);
        $client->request('GET', self::BASE_URL . '/classes/' . self::CLASS_ID . '/statistics', [
            'headers' => ['Accept' => 'application/json'],
        ]);

        self::assertResponseIsSuccessful();
    }

    // =========================================================================
    // Helpers
    // =========================================================================

    /**
     * @param list<string> $roles
     */
    private function createAuthenticatedClient(string $userId, array $roles): \ApiPlatform\Symfony\Bundle\Test\Client
    {
        $client = static::createClient();

        $user = new SecurityUser(
            userId: UserId::fromString($userId),
            email: 'test@classeo.local',
            hashedPassword: '',
            tenantId: TenantId::fromString(self::TENANT_ID),
            roles: $roles,
        );

        $client->loginUser($user, 'api');

        return $client;
    }

    private function seedFixtures(): void
    {
        $container = static::getContainer();
        /** @var Connection $connection */
        $connection = $container->get(Connection::class);
        $tenantId = TenantId::fromString(self::TENANT_ID);
        $now = new DateTimeImmutable();

        $schoolId = '550e8400-e29b-41d4-a716-ff6655440001';
        $academicYearId = '550e8400-e29b-41d4-a716-ff6655440002';

        // Seed parent tables
        $connection->executeStatement(
            "INSERT INTO users (id, tenant_id, email, hashed_password, first_name, last_name, roles, statut, created_at, updated_at)
             VALUES (:id, :tid, 'teacher-moy@test.local', '', 'Test', 'Teacher', '[\"ROLE_PROF\"]', 'active', NOW(), NOW())
             ON CONFLICT (id) DO NOTHING",
            ['id' => self::TEACHER_ID, 'tid' => self::TENANT_ID],
        );
        $connection->executeStatement(
            "INSERT INTO users (id, tenant_id, email, hashed_password, first_name, last_name, roles, statut, created_at, updated_at)
             VALUES (:id, :tid, 'student-moy@test.local', '', 'Test', 'Student', '[\"ROLE_ELEVE\"]', 'active', NOW(), NOW())
             ON CONFLICT (id) DO NOTHING",
            ['id' => self::STUDENT_ID, 'tid' => self::TENANT_ID],
        );
        $connection->executeStatement(
            "INSERT INTO users (id, tenant_id, email, hashed_password, first_name, last_name, roles, statut, created_at, updated_at)
             VALUES (:id, :tid, 'student2-moy@test.local', '', 'Test', 'Student2', '[\"ROLE_ELEVE\"]', 'active', NOW(), NOW())
             ON CONFLICT (id) DO NOTHING",
            ['id' => '33333333-3333-3333-3333-333333333333', 'tid' => self::TENANT_ID],
        );
        $connection->executeStatement(
            "INSERT INTO school_classes (id, tenant_id, school_id, academic_year_id, name, status, created_at, updated_at)
             VALUES (:id, :tid, :sid, :ayid, 'Test-Moy-Class', 'active', NOW(), NOW())
             ON CONFLICT (id) DO NOTHING",
            ['id' => self::CLASS_ID, 'tid' => self::TENANT_ID, 'sid' => $schoolId, 'ayid' => $academicYearId],
        );
        $connection->executeStatement(
            "INSERT INTO subjects (id, tenant_id, school_id, name, code, status, created_at, updated_at)
             VALUES (:id, :tid, :sid, 'Test-Moy-Subject', 'TMOY', 'active', NOW(), NOW())
             ON CONFLICT (id) DO NOTHING",
            ['id' => self::SUBJECT_ID, 'tid' => self::TENANT_ID, 'sid' => $schoolId],
        );
        $connection->executeStatement(
            "INSERT INTO academic_periods (id, tenant_id, academic_year_id, period_type, sequence, label, start_date, end_date)
             VALUES (:id, :tid, :ayid, 'trimester', 2, 'Trimestre 2', '2026-01-01', '2026-03-31')
             ON CONFLICT (id) DO NOTHING",
            ['id' => self::PERIOD_ID, 'tid' => self::TENANT_ID, 'ayid' => $academicYearId],
        );

        // Créer une évaluation publiée avec 2 notes
        $evaluation = Evaluation::creer(
            tenantId: $tenantId,
            classId: ClassId::fromString(self::CLASS_ID),
            subjectId: SubjectId::fromString(self::SUBJECT_ID),
            teacherId: UserId::fromString(self::TEACHER_ID),
            title: 'DS Mathématiques',
            description: null,
            evaluationDate: new DateTimeImmutable('2026-02-15'),
            gradeScale: new GradeScale(20),
            coefficient: new Coefficient(1.0),
            now: $now,
        );
        $evaluation->publierNotes($now);
        $evaluation->pullDomainEvents();

        /** @var EvaluationRepository $evalRepo */
        $evalRepo = $container->get(EvaluationRepository::class);
        $evalRepo->save($evaluation);

        $this->evaluationId = $evaluation->id;

        /** @var GradeRepository $gradeRepo */
        $gradeRepo = $container->get(GradeRepository::class);

        $student2Id = '33333333-3333-3333-3333-333333333333';

        foreach ([
            [self::STUDENT_ID, 16.0],
            [$student2Id, 12.0],
        ] as [$studentId, $value]) {
            $grade = Grade::saisir(
                tenantId: $tenantId,
                evaluationId: $evaluation->id,
                studentId: UserId::fromString($studentId),
                value: new GradeValue($value),
                status: GradeStatus::GRADED,
                gradeScale: new GradeScale(20),
                createdBy: UserId::fromString(self::TEACHER_ID),
                now: $now,
            );
            $grade->pullDomainEvents();
            $gradeRepo->save($grade);
        }

        // Calculer et sauvegarder les statistiques
        /** @var AverageCalculator $calculator */
        $calculator = $container->get(AverageCalculator::class);

        $stats = $calculator->calculateClassStatistics([16.0, 12.0]);

        /** @var EvaluationStatisticsRepository $statsRepo */
        $statsRepo = $container->get(EvaluationStatisticsRepository::class);
        $statsRepo->save($evaluation->id, $stats);

        // Sauvegarder une moyenne élève
        /** @var StudentAverageRepository $avgRepo */
        $avgRepo = $container->get(StudentAverageRepository::class);
        $avgRepo->saveSubjectAverage(
            $tenantId,
            UserId::fromString(self::STUDENT_ID),
            SubjectId::fromString(self::SUBJECT_ID),
            self::PERIOD_ID,
            16.0,
            1,
        );
        $avgRepo->saveGeneralAverage(
            $tenantId,
            UserId::fromString(self::STUDENT_ID),
            self::PERIOD_ID,
            16.0,
        );
    }
}