<?php

namespace App\Tests\Service;

use App\Entity\Organizations;
use App\Entity\Roles;
use App\Entity\User;
use App\Entity\UserOrganizatonApp;
use App\Entity\UsersOrganizations;
use App\Event\UserCreatedEvent;
use App\Service\ActionService;
use App\Service\EmailService;
use App\Service\LoggerService;
use App\Service\OrganizationsService;
use App\Service\UserService;
use Doctrine\ORM\EntityManagerInterface;
use Doctrine\ORM\EntityNotFoundException;
use Doctrine\ORM\EntityRepository;
use League\Bundle\OAuth2ServerBundle\Model\AccessToken;
use PHPUnit\Framework\MockObject\MockObject;
use PHPUnit\Framework\TestCase;
use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
use Symfony\Bundle\SecurityBundle\Security;
use Symfony\Component\HttpFoundation\File\UploadedFile;

class UserServiceTest extends TestCase
{
    private UserService $userService;

    // Mocks
    private MockObject|EntityManagerInterface $entityManager;
    private MockObject|Security $security;
    private MockObject|LoggerService $loggerService;
    private MockObject|ActionService $actionService;
    private MockObject|EmailService $emailService;
    private MockObject|OrganizationsService $organizationsService;
    private MockObject|EventDispatcherInterface $eventDispatcher;

    protected function setUp(): void
    {
        $this->entityManager = $this->createMock(EntityManagerInterface::class);
        $this->security = $this->createMock(Security::class);
        $this->actionService = $this->createMock(ActionService::class);
        $this->emailService = $this->createMock(EmailService::class);
        $this->organizationsService = $this->createMock(OrganizationsService::class);
        $this->loggerService = $this->createMock(LoggerService::class);
        $this->eventDispatcher = $this->createMock(EventDispatcherInterface::class);

        $this->userService = new UserService(
            $this->entityManager,
            $this->security,
            $this->loggerService,
            $this->actionService,
            $this->emailService,
            $this->organizationsService,
            $this->eventDispatcher
        );
    }

    public function testGenerateRandomPassword(): void
    {
        $password = $this->userService->generateRandomPassword();
        $this->assertEquals(64, strlen($password));
        $this->assertMatchesRegularExpression('/[a-zA-Z0-9!@#$%^&*()_+]+/', $password);
    }

    public function testIsUserConnectedReturnsTrueIfTokenValid(): void
    {
        $userIdentifier = 'test@example.com';

        // Mock the Repository for AccessToken
        $repo = $this->createMock(EntityRepository::class);

        // Mock a token that expires in the future
        $token = $this->createMock(AccessToken::class);
        $token->method('getExpiry')->willReturn(new \DateTimeImmutable('+1 hour'));

        $repo->expects($this->once())
            ->method('findBy')
            ->with(['userIdentifier' => $userIdentifier, 'revoked' => false])
            ->willReturn([$token]);

        $this->entityManager->expects($this->once())
            ->method('getRepository')
            ->with(AccessToken::class)
            ->willReturn($repo);

        $result = $this->userService->isUserConnected($userIdentifier);
        $this->assertTrue($result);
    }

    public function testIsUserConnectedReturnsFalseIfTokenExpired(): void
    {
        $userIdentifier = 'test@example.com';
        $repo = $this->createMock(EntityRepository::class);

        $token = $this->createMock(AccessToken::class);
        $token->method('getExpiry')->willReturn(new \DateTimeImmutable('-1 hour'));

        $repo->method('findBy')->willReturn([$token]);
        $this->entityManager->method('getRepository')->willReturn($repo);

        $result = $this->userService->isUserConnected($userIdentifier);
        $this->assertFalse($result);
    }

    public function testGetUserByIdentifierFound(): void
    {
        $identifier = 'user@test.com';
        $user = new User();
        $user->setEmail($identifier);

        $repo = $this->createMock(EntityRepository::class);
        $repo->expects($this->once())
            ->method('findOneBy')
            ->with(['email' => $identifier])
            ->willReturn($user);

        $this->entityManager->method('getRepository')->with(User::class)->willReturn($repo);

        $result = $this->userService->getUserByIdentifier($identifier);
        $this->assertSame($user, $result);
    }

    public function testGetUserByIdentifierNotFound(): void
    {
        $identifier = 'unknown@test.com';

        $repo = $this->createMock(EntityRepository::class);
        $repo->method('findOneBy')->willReturn(null);
        $this->entityManager->method('getRepository')->with(User::class)->willReturn($repo);

        // Expect Logger to be called
        $this->loggerService->expects($this->once())
            ->method('logEntityNotFound')
            ->with('User', ['user_identifier' => $identifier], null);

        $this->expectException(EntityNotFoundException::class);
        $this->expectExceptionMessage(UserService::NOT_FOUND);

        $this->userService->getUserByIdentifier($identifier);
    }

    public function testHasAccessToReturnsTrueForSuperAdmin(): void
    {
        $this->security->method('isGranted')->with('ROLE_SUPER_ADMIN')->willReturn(true);
        $user = new User(); // Dummy user
        $this->assertTrue($this->userService->hasAccessTo($user));
    }

    public function testHasAccessToReturnsTrueForSelf(): void
    {
        $this->security->method('isGranted')->willReturn(false);

        $currentUser = new User();
        $currentUser->setEmail('me@test.com');

        $targetUser = new User();
        $targetUser->setEmail('me@test.com');

        $this->security->method('getUser')->willReturn($currentUser);

        // skipSelfCheck = false (default)
        $this->assertTrue($this->userService->hasAccessTo($targetUser));
    }

    public function testHandleProfilePictureUploadsAndLogs(): void
    {
        $user = new User();
        $user->setName('John');
        $user->setSurname('Doe');

        // Mock UploadedFile
        $file = $this->createMock(UploadedFile::class);
        $file->method('guessExtension')->willReturn('jpg');


        $this->userService->handleProfilePicture($user, $file);

        $this->assertStringContainsString('uploads/profile_pictures/JohnDoe_', $user->getPictureUrl());
    }

    public function testSyncUserRolesAddsRole(): void
    {
        $user = new User();
        $user->setRoles(['ROLE_USER']);

        $this->loggerService->expects($this->once())->method('logRoleAssignment');

        $this->userService->syncUserRoles($user, 'ADMIN', true);

        $this->assertContains('ROLE_ADMIN', $user->getRoles());
    }

    public function testSyncUserRolesRemovesRole(): void
    {
        $user = new User();
        $user->setRoles(['ROLE_USER', 'ROLE_ADMIN']);

        // Mock repositories to ensure no other org gives this role
        $repoUO = $this->createMock(EntityRepository::class);
        $repoUO->method('findBy')->willReturn([]); // No active org links

        $this->entityManager->method('getRepository')
            ->willReturnMap([
                [UsersOrganizations::class, $repoUO]
            ]);

        $this->userService->syncUserRoles($user, 'ADMIN', false);

        $this->assertNotContains('ROLE_ADMIN', $user->getRoles());
    }

    public function testIsPasswordStrong(): void
    {
        $this->assertTrue($this->userService->isPasswordStrong('StrongP@ss1')); // Chars + Digits + Special + Length
        $this->assertFalse($this->userService->isPasswordStrong('weak')); // Too short
        $this->assertFalse($this->userService->isPasswordStrong('123456789')); // No letters
    }

    public function testCreateNewUserSuccess(): void
    {
        $newUser = new User();
        $newUser->setName('jane');
        $newUser->setSurname('doe');
        $newUser->setEmail('jane@doe.com');

        $actingUser = new User();
        $this->setEntityId($actingUser, 99);
        $actingUser->setEmail('admin@test.com');

        // 1. Expect the Entity Manager to save the user
        $this->entityManager->expects($this->atLeastOnce())
        ->method('persist')
            ->with($newUser)
            ->willReturnCallback(function ($entity) {
                $this->setEntityId($entity, 123);
            });

        $this->entityManager->expects($this->atLeastOnce())->method('flush');

        // 2. IMPORTANT: Expect the Event Dispatcher to be called
        // We check that it receives an instance of UserCreatedEvent
        $this->eventDispatcher->expects($this->once())
            ->method('dispatch')
            ->with($this->isInstanceOf(UserCreatedEvent::class))
            ->willReturn(new UserCreatedEvent($newUser, $actingUser));

        // 3. REMOVE direct expectations for emailService, loggerService, and actionService
        // Because UserService no longer calls them—the Subscriber does.
        // (If you want to test the Subscriber, that should be in a separate UserSubscriberTest)

        // Execute
        $this->userService->createNewUser($newUser, $actingUser, null);

        // 4. Assertions
        $this->assertEquals('Jane', $newUser->getName()); // Verify formatting (formatUserData)
        $this->assertEquals(123, $newUser->getId());
        $this->assertFalse($newUser->isActive());
    }

    public function testLinkUserToOrganization(): void
    {
        $user = new User();
        $this->setEntityId($user, 10); // Pre-set ID for existing user

        $org = new Organizations();
        $this->setEntityId($org, 50); // Pre-set ID for org

        $actingUser = new User();
        $this->setEntityId($actingUser, 99);

        // Capture the UsersOrganizations entity when it is persisted to give it an ID
        $this->entityManager->expects($this->exactly(2))
            ->method('persist')
            ->willReturnCallback(function ($entity) use ($user) {
                if ($entity instanceof UsersOrganizations) {
                    // This is the UO entity link (Call 1)
                    $this->setEntityId($entity, 555);
                } elseif ($entity instanceof User && $entity === $user) {
                    // This is the User entity inside generatePasswordToken (Call 2)
                    // The ID is already set, so we do nothing here.
                }
            });

        $this->entityManager->expects($this->exactly(2))->method('flush');


        // Now the logger will receive valid Integers instead of null
        $this->loggerService->expects($this->once())
            ->method('logUserOrganizationLinkCreated')
            ->with(10, 50, 99, 555);

        $this->emailService->expects($this->once())->method('sendPasswordSetupEmail');
        $this->organizationsService->expects($this->once())->method('notifyOrganizationAdmins');

        $result = $this->userService->linkUserToOrganization($user, $org, $actingUser);

        $this->assertInstanceOf(UsersOrganizations::class, $result);
        $this->assertEquals(555, $result->getId());
    }

    public function testIsAdminOfOrganizationReturnsTrue(): void
    {
        $org = new Organizations();

        $currentUser = new User();
        $currentUser->setEmail('admin@test.com');

        // Mock Security User
        $this->security->method('getUser')->willReturn($currentUser);
        $this->security->method('isGranted')->with('ROLE_ADMIN')->willReturn(true);

        // 1. getUserByIdentifier (internal call) mocks
        $userRepo = $this->createMock(EntityRepository::class);
        $userRepo->method('findOneBy')->with(['email' => 'admin@test.com'])->willReturn($currentUser);

        // 2. UsersOrganizations mock
        $uoRepo = $this->createMock(EntityRepository::class);
        $uo = new UsersOrganizations();
        $uoRepo->method('findOneBy')->willReturn($uo);

        // 3. Roles mock
        $rolesRepo = $this->createMock(EntityRepository::class);
        $adminRole = new Roles();
        $adminRole->setName('ADMIN');
        $rolesRepo->method('findOneBy')->with(['name' => 'ADMIN'])->willReturn($adminRole);

        // 4. UserOrganizatonApp mock (The link checking if they are admin active)
        $uoaRepo = $this->createMock(EntityRepository::class);
        $uoa = new UserOrganizatonApp();
        $uoaRepo->method('findOneBy')->willReturn($uoa); // Returns an object, so true

        // Configure EntityManager to return these repos based on class
        $this->entityManager->method('getRepository')->willReturnMap([
            [User::class, $userRepo],
            [UsersOrganizations::class, $uoRepo],
            [Roles::class, $rolesRepo],
            [UserOrganizatonApp::class, $uoaRepo],
        ]);

        $result = $this->userService->isAdminOfOrganization($org);
        $this->assertTrue($result);
    }

    private function setEntityId(object $entity, int $id): void
    {
        $reflection = new \ReflectionClass($entity);
        $property = $reflection->getProperty('id');
        // $property->setAccessible(true); // Required for PHP < 8.1
        $property->setValue($entity, $id);
    }
}