<?php

namespace Tests\Feature;

use App\Contracts\AiService;
use App\Jobs\AnalyzeStudentPerformance;
use App\Models\Lesson;
use App\Models\Question;
use App\Models\QuestionOption;
use App\Models\Quiz;
use App\Models\User;
use App\Services\ProgressTrackingService;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Queue;
use PHPUnit\Framework\Attributes\Test;
use Tests\TestCase;

class StudentTrackingTest extends TestCase
{
    use RefreshDatabase;

    private User $student;

    private Lesson $lesson;

    private Quiz $quiz;

    private Question $question;

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

        $this->student = User::factory()->create();
        $this->lesson = Lesson::factory()->create(['duration_seconds' => 600]);
        $this->quiz = Quiz::factory()->for($this->lesson)->create();
        $this->question = Question::factory()->for($this->quiz)->create([
            'explanation' => 'لأن القانون ينص على ذلك',
        ]);

        QuestionOption::query()->create(['question_id' => $this->question->id, 'body' => 'A', 'is_correct' => true]);
        QuestionOption::query()->create(['question_id' => $this->question->id, 'body' => 'B', 'is_correct' => false]);
    }

    #[Test]
    public function heartbeat_updates_progress_and_completes_lesson(): void
    {
        $response = $this->postJson('/api/v1/progress/heartbeat', [
            'lesson_id' => $this->lesson->id,
            'position_seconds' => 300,
        ], $this->authHeaders());

        $response->assertOk()
            ->assertJsonPath('watched_percentage', 50)
            ->assertJsonPath('completed', false);

        $this->postJson('/api/v1/progress/heartbeat', [
            'lesson_id' => $this->lesson->id,
            'position_seconds' => 580,
        ], $this->authHeaders())->assertOk()->assertJsonPath('completed', true);

        $this->assertDatabaseCount('lesson_progress', 1);
    }

    #[Test]
    public function quiz_attempt_is_graded_server_side_and_updates_mastery(): void
    {
        $wrongOption = QuestionOption::query()->where('is_correct', false)->firstOrFail();
        $rightOption = QuestionOption::query()->where('is_correct', true)->firstOrFail();

        $response = $this->postJson("/api/v1/lessons/{$this->lesson->id}/quizzes/{$this->quiz->id}/attempts", [
            'answers' => [
                ['question_id' => $this->question->id, 'selected_option_id' => $wrongOption->id, 'time_spent_seconds' => 12],
            ],
        ], $this->authHeaders());

        $response->assertOk()
            ->assertJsonPath('score', 0)
            ->assertJsonPath('results.0.is_correct', false)
            ->assertJsonPath('results.0.explanation', 'لأن القانون ينص على ذلك');

        $mastery = $this->student->conceptMastery()->firstOrFail();
        $this->assertSame(0.0, (float) $mastery->mastery_score);
        $this->assertSame(1, (int) $mastery->wrong_count);

        $retry = $this->postJson("/api/v1/lessons/{$this->lesson->id}/quizzes/{$this->quiz->id}/attempts", [
            'answers' => [
                ['question_id' => $this->question->id, 'selected_option_id' => $rightOption->id],
            ],
        ], $this->authHeaders());

        $retry->assertOk()->assertJsonPath('score', 100);

        $mastery->refresh();
        $this->assertSame(30.0, (float) $mastery->mastery_score);
        $this->assertSame(1, (int) $mastery->correct_count);
    }

    #[Test]
    public function analysis_endpoint_queues_job(): void
    {
        Queue::fake();

        $response = $this->postJson('/api/v1/students/me/analysis', [], $this->authHeaders());

        $response->assertAccepted();
        Queue::assertPushed(AnalyzeStudentPerformance::class);
    }

    #[Test]
    public function analysis_job_stores_ai_report_via_fake_service(): void
    {
        $this->app->bind(AiService::class, fn () => new class implements AiService
        {
            /**
             * @param  array<string, mixed>  $performance
             * @return array<string, mixed>
             */
            public function analyzeStudentPerformance(array $performance): array
            {
                return [
                    'weak_concepts' => [['name' => 'الاشتقاق', 'reason' => 'أخطاء متكررة', 'severity' => 'high']],
                    'remedial_lesson_ids' => [],
                    'recommended_actions' => ['إعادة مشاهدة الدرس الأول'],
                    'motivation_note' => 'استمر',
                    'summary' => 'ملخص تجريبي',
                ];
            }

            /**
             * @param  array<string, mixed>  $activity
             * @return array<string, mixed>
             */
            public function generateParentWeeklyReport(array $activity): array
            {
                return [];
            }
        });

        (new AnalyzeStudentPerformance($this->student->id))
            ->handle(app(ProgressTrackingService::class), app(AiService::class));

        $this->assertDatabaseHas('ai_reports', [
            'user_id' => $this->student->id,
            'type' => 'weakness_analysis',
        ]);
    }

    #[Test]
    public function heartbeat_requires_authentication(): void
    {
        $this->postJson('/api/v1/progress/heartbeat', [
            'lesson_id' => $this->lesson->id,
            'position_seconds' => 10,
        ])->assertUnauthorized();
    }

    /**
     * @return array<string, string>
     */
    private function authHeaders(): array
    {
        return ['Authorization' => 'Bearer '.$this->student->api_token];
    }
}