<?php

namespace {
    if (!function_exists('view')) {
        function view($name, array $data = [], $options = [])
        {
            return ['view' => $name, 'data' => $data, 'options' => $options];
        }
    }

    if (!function_exists('local_date')) {
        function local_date($timestamp, $format)
        {
            if ($timestamp instanceof \DateTimeInterface) {
                return $timestamp->format($format);
            }
            if (is_numeric($timestamp)) {
                return date($format, (int) $timestamp);
            }
            return date($format);
        }
    }

    if (!function_exists('site_url')) {
        function site_url($uri = '')
        {
            return 'https://test.alrahmaisgl.org/' . ltrim((string) $uri, '/');
        }
    }

    if (!function_exists('base_url')) {
        function base_url($uri = '')
        {
            return 'https://test.alrahmaisgl.org/' . ltrim((string) $uri, '/');
        }
    }
}

namespace Tests\App\Controllers\View {

    use App\Controllers\View\AdministratorController;
    use App\Models\UserModel;
    use App\Services\AdministratorDashboardService;
    use App\Services\AdminNotificationSettingsService;
    use App\Services\EnrollmentWithdrawalService;
    use App\Services\TeacherSubmissionReportService;
    use CodeIgniter\HTTP\RedirectResponse;
    use CodeIgniter\Test\CIUnitTestCase;
    use Config\Services;

    class DummyPostRequest
    {
        public function __construct(private array $post = [], private array $get = [])
        {
        }

        public function getPost($key = null)
        {
            if ($key === null) {
                return $this->post;
            }
            return $this->post[$key] ?? null;
        }

        public function getGet($key = null)
        {
            if ($key === null) {
                return $this->get;
            }
            return $this->get[$key] ?? null;
        }
    }

    class FakeJsonResponse
    {
        public mixed $json = null;
        public int $statusCode = 200;

        public function setJSON($data): self
        {
            $this->json = $data;
            return $this;
        }

        public function setStatusCode(int $code): self
        {
            $this->statusCode = $code;
            return $this;
        }
    }

    class FakeRenderer
    {
        public array $lastData = [];
        public string $lastName = '';

        public function setData(array $data, string $type = 'raw')
        {
            $this->lastData = $data;
            return $this;
        }

        public function render(string $name, array $options = [], bool $saveData = false)
        {
            $this->lastName = $name;
            return 'fake-render';
        }
    }

    class FakeAttendanceModel
    {
        public function __construct(private array $existing = [])
        {
        }

        public function where(...$args)
        {
            return $this;
        }

        public function orderBy(...$args)
        {
            return $this;
        }

        public function findAll()
        {
            return $this->existing;
        }

        public function upsertOne(...$args)
        {
            return true;
        }
    }

    class TestableAdministratorController extends AdministratorController
    {
        public function __construct()
        {
            // Skip expensive parent constructor to avoid real DB/models.
        }

        public function setUserModel(UserModel $model): self
        {
            $this->userModel = $model;
            return $this;
        }

        public function setStaffAttendanceModel($model): self
        {
            $this->staffAttendanceModel = $model;
            return $this;
        }

        public function setSemester(string $semester): self
        {
            $this->semester = $semester;
            return $this;
        }

        public function setSchoolYear(string $schoolYear): self
        {
            $this->schoolYear = $schoolYear;
            return $this;
        }

        public function setRequest($request): self
        {
            $this->request = $request;
            return $this;
        }

        public function setResponse($response): self
        {
            $this->response = $response;
            return $this;
        }
    }

    class AdministratorControllerTest extends CIUnitTestCase
    {
        private TestableAdministratorController $controller;
        private FakeRenderer $renderer;

        protected function setUp(): void
        {
            parent::setUp();

            Services::resetSingle('session');
            helper('date');
            session()->start();

            $this->controller = new TestableAdministratorController();
            $this->controller->setSemester('Fall')->setSchoolYear('2024-2025');
            $this->renderer = new FakeRenderer();
            Services::injectMock('renderer', $this->renderer);
        }

        protected function tearDown(): void
        {
            Services::resetSingle('renderer');
            Services::resetSingle('administratorDashboard');
            Services::resetSingle('teacherSubmissionReport');
            Services::resetSingle('adminNotificationSettings');
            Services::resetSingle('enrollmentWithdrawal');
            Services::resetSingle('emailService');
            session()->destroy();
            parent::tearDown();
        }

        public function testAbsenceFormRedirectsWhenNotLoggedIn()
        {
            session()->remove('user_id');

            $response = $this->controller->absenceFormAdmin();

            $this->assertInstanceOf(RedirectResponse::class, $response);
            $this->assertStringContainsString('/login', $response->getHeaderLine('Location') ?: '');
        }

        public function testAbsenceFormBuildsViewWithAttendance()
        {
            session()->set('user_id', 7);

            $userModel = $this->createMock(UserModel::class);
            $userModel->method('find')->with(7)->willReturn([
                'firstname' => 'Alex',
                'lastname' => 'Admin',
            ]);

            $attendance = new FakeAttendanceModel([
                ['date' => '2024-12-01'],
            ]);

            $this->controller->setUserModel($userModel)->setStaffAttendanceModel($attendance);

            $result = $this->controller->absenceFormAdmin();

            if (is_array($result)) {
                $this->assertSame('administrator/absence_vacation', $result['view']);
                $data = $result['data'];
            } else {
                $this->assertSame('fake-render', $result);
                $this->assertSame('administrator/absence_vacation', $this->renderer->lastName);
                $data = $this->renderer->lastData;
            }
            $this->assertSame('Alex Admin', $data['admin_name']);
            $this->assertSame('Fall', $data['semester']);
            $this->assertSame('2024-2025', $data['schoolYear']);
            $this->assertSame([['date' => '2024-12-01']], $data['existing']);
            $this->assertIsArray($data['availableDates']);
        }

        public function testSubmitAbsenceRejectsMissingReason()
        {
            session()->set('user_id', 9);

            $req = new DummyPostRequest([
                'dates' => ['2024-12-01'],
                'reason_type' => '',
                'reason' => '',
            ]);

            $this->controller->setRequest($req);

            $response = $this->controller->submitAbsenceAdmin();

            $this->assertInstanceOf(RedirectResponse::class, $response);
            $this->assertStringContainsString('/administrator/absence', $response->getHeaderLine('Location') ?: '');
            $this->assertSame('Reason is required.', session()->getFlashdata('message'));
        }

        public function testSubmitAbsenceSavesAndRedirects()
        {
            session()->set('user_id', 10);

            $userModel = $this->createMock(UserModel::class);
            $userModel->method('getUserRole')->with(10)->willReturn('administrator');
            $userModel->method('find')->with(10)->willReturn([
                'firstname' => 'Sam',
                'lastname' => 'Admin',
                'email' => 'sam@school.test',
            ]);

            $attendance = new FakeAttendanceModel();
            $this->controller->setUserModel($userModel)->setStaffAttendanceModel($attendance);

            $method = new \ReflectionMethod($this->controller, 'allowedAbsenceDates');
            $method->setAccessible(true);
            $allowed = $method->invoke($this->controller);

            if (empty($allowed)) {
                $this->markTestSkipped('No allowed absence dates are currently available.');
            }

            $date = $allowed[0];

            $req = new DummyPostRequest([
                'dates' => [$date],
                'reason_type' => 'Personal',
                'reason' => 'Conference',
            ]);
            $this->controller->setRequest($req);

            $emailService = $this->createMock(\App\Services\EmailService::class);
            $emailService->method('send')->willReturn(true);
            Services::injectMock('emailService', $emailService);

            $response = $this->controller->submitAbsenceAdmin();

            $this->assertInstanceOf(RedirectResponse::class, $response);
            $this->assertStringContainsString('/administrator/absence', $response->getHeaderLine('Location') ?: '');
            $this->assertSame('success', session()->getFlashdata('status'));
            $this->assertStringContainsString('saved', (string) session()->getFlashdata('message'));
        }

        public function testAdministratorDashboardUsesDashboardServiceSearch(): void
        {
            $dashboard = $this->createMock(AdministratorDashboardService::class);
            $dashboard->expects($this->once())
                ->method('search')
                ->with('alex')
                ->willReturn([
                    'query' => 'alex',
                    'results' => ['users' => []],
                    'scope_used' => 'unscoped-raw',
                    'scope_label' => 'all years/semesters (raw, tokenized)',
                    'total_found' => 0,
                ]);
            Services::injectMock('administratorDashboard', $dashboard);

            $this->controller->setRequest(new DummyPostRequest([], ['query' => 'alex']));

            $result = $this->controller->administratorDashboard();
            $data = $this->viewData($result, 'administrator/administratordashboard');

            $this->assertSame('alex', $data['query']);
            $this->assertSame(0, $data['total_found']);
            $this->assertArrayHasKey('dashboardEndpoint', $data);
        }

        public function testDashboardMetricsDelegatesToDashboardService(): void
        {
            $payload = [
                'counts' => ['students' => 3],
                'recentActivities' => [],
                'meta' => ['schoolYear' => '2024-2025', 'semester' => 'Fall'],
            ];

            $dashboard = $this->createMock(AdministratorDashboardService::class);
            $dashboard->expects($this->once())
                ->method('metrics')
                ->with('2024-2025', 'Fall')
                ->willReturn($payload);
            Services::injectMock('administratorDashboard', $dashboard);

            $response = new FakeJsonResponse();
            $this->controller->setResponse($response);

            $result = $this->controller->dashboardMetrics();

            $this->assertSame($response, $result);
            $this->assertSame($payload, $response->json);
        }

        public function testUserSearchUsesDashboardService(): void
        {
            $dashboard = $this->createMock(AdministratorDashboardService::class);
            $dashboard->expects($this->once())
                ->method('search')
                ->with('parent')
                ->willReturn([
                    'query' => 'parent',
                    'results' => [],
                    'total_found' => 0,
                ]);
            Services::injectMock('administratorDashboard', $dashboard);

            $this->controller->setRequest(new DummyPostRequest([], ['query' => 'parent']));

            $result = $this->controller->userSearch();
            $data = $this->viewData($result, 'administrator/search_results');

            $this->assertSame('parent', $data['query']);
        }

        public function testNotificationsAlertsRedirectsWhenUnauthorized(): void
        {
            session()->remove('is_logged_in');
            session()->remove('role');

            $notification = $this->createMock(AdminNotificationSettingsService::class);
            $notification->method('excludedRoles')->willReturn(['parent', 'teacher']);
            Services::injectMock('adminNotificationSettings', $notification);

            $response = $this->controller->notificationsAlerts();

            $this->assertInstanceOf(RedirectResponse::class, $response);
            $this->assertStringContainsString('/login', $response->getHeaderLine('Location') ?: '');
        }

        public function testNotificationsAlertsUsesNotificationServiceWhenAuthorized(): void
        {
            session()->set('is_logged_in', true);
            session()->set('role', 'administrator');

            $notification = $this->createMock(AdminNotificationSettingsService::class);
            $notification->method('excludedRoles')->willReturn(['parent', 'teacher']);
            $notification->expects($this->once())
                ->method('alertsPage')
                ->willReturn([
                    'admins' => [['id' => 1]],
                    'subjects' => ['finance' => 'Finance'],
                    'assignedSubjects' => [],
                    'tableReady' => true,
                ]);
            Services::injectMock('adminNotificationSettings', $notification);

            $result = $this->controller->notificationsAlerts();
            $data = $this->viewData($result, 'administrator/notifications_alerts');

            $this->assertTrue($data['tableReady']);
            $this->assertSame([['id' => 1]], $data['admins']);
        }

        public function testSendTeacherSubmissionNotificationsRedirectsWithServiceFlash(): void
        {
            session()->set('user_id', 12);

            $report = $this->createMock(TeacherSubmissionReportService::class);
            $report->expects($this->once())
                ->method('sendNotifications')
                ->willReturn([
                    'redirect' => 'back',
                    'type' => 'success',
                    'message' => '1 notification sent.',
                ]);
            Services::injectMock('teacherSubmissionReport', $report);

            $this->controller->setRequest(new DummyPostRequest(['notify' => [1 => [2 => '1']]]));

            $response = $this->controller->sendTeacherSubmissionNotifications();

            $this->assertInstanceOf(RedirectResponse::class, $response);
            $this->assertSame('1 notification sent.', session()->getFlashdata('success'));
        }

        public function testAdminEnrollmentWithdrawalHandlerUsesEnrollmentService(): void
        {
            session()->set('user_id', 5);

            $enrollment = $this->createMock(EnrollmentWithdrawalService::class);
            $enrollment->expects($this->once())
                ->method('updateStatuses')
                ->with(
                    ['10' => 'enrolled'],
                    '2024-2025',
                    'Fall',
                    5
                )
                ->willReturn([
                    'ok' => true,
                    'message' => 'Enrollment statuses updated and notifications sent.',
                ]);
            Services::injectMock('enrollmentWithdrawal', $enrollment);

            $this->controller->setRequest(new DummyPostRequest([
                'enrollment_status' => ['10' => 'enrolled'],
            ]));

            $response = $this->controller->adminEnrollmentWithdrawalHandler();

            $this->assertInstanceOf(RedirectResponse::class, $response);
            $this->assertStringContainsString('enroll_withdraw/enrollment_withdrawal', $response->getHeaderLine('Location') ?: '');
            $this->assertSame(
                'Enrollment statuses updated and notifications sent.',
                session()->getFlashdata('success')
            );
        }

        public function testShowNewStudentsUsesEnrollmentService(): void
        {
            $enrollment = $this->createMock(EnrollmentWithdrawalService::class);
            $enrollment->expects($this->once())
                ->method('newStudents')
                ->with('2024-2025')
                ->willReturn([
                    'new_students' => [['id' => 1, 'new_student' => 'Yes']],
                    'total_new' => 1,
                ]);
            Services::injectMock('enrollmentWithdrawal', $enrollment);

            $result = $this->controller->showNewStudents();
            $data = $this->viewData($result, 'enroll_withdraw/new-students');

            $this->assertSame(1, $data['total_new']);
        }

        private function viewData(mixed $result, string $expectedView): array
        {
            if (is_array($result)) {
                $this->assertSame($expectedView, $result['view']);
                return $result['data'];
            }

            $this->assertSame('fake-render', $result);
            $this->assertSame($expectedView, $this->renderer->lastName);
            return $this->renderer->lastData;
        }
    }
}