<?php

namespace Tests\Feature;

use App\Models\BodyPart;
use App\Models\Exercise;
use App\Models\User;
use App\Models\Workout;
use App\Models\WorkoutExercise;
use App\Models\WorkoutSession;
use App\Models\WorkoutSessionItem;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

class ExerciseTest extends TestCase
{
    use RefreshDatabase;

    public function test_index_lists_exercises(): void
    {
        Exercise::factory()->count(3)->create();

        $response = $this->get(route('exercises.index'));

        $response->assertOk();
        $response->assertViewHas('exercises', function ($exercises) {
            return $exercises->total() === 3;
        });
    }

    public function test_index_can_filter_by_search_query(): void
    {
        Exercise::factory()->create(['name' => 'Barbell Bench Press']);
        Exercise::factory()->create(['name' => 'Dumbbell Curl']);

        $response = $this->get(route('exercises.index', ['q' => 'Bench']));

        $response->assertOk();
        $response->assertViewHas('exercises', function ($exercises) {
            return $exercises->total() === 1
                && $exercises->first()->name === 'Barbell Bench Press';
        });
    }

    public function test_index_can_filter_by_body_part(): void
    {
        $chest = BodyPart::create(['name' => 'Chest', 'slug' => 'chest']);
        $back = BodyPart::create(['name' => 'Back', 'slug' => 'back']);

        $chestExercise = Exercise::factory()->create();
        $chestExercise->bodyParts()->attach($chest->id);

        $backExercise = Exercise::factory()->create();
        $backExercise->bodyParts()->attach($back->id);

        $response = $this->get(route('exercises.index', ['bodypart' => 'chest']));

        $response->assertOk();
        $response->assertViewHas('exercises', function ($exercises) use ($chestExercise) {
            return $exercises->total() === 1
                && $exercises->first()->id === $chestExercise->id;
        });
    }

    public function test_show_displays_exercise(): void
    {
        $exercise = Exercise::factory()->create(['name' => 'Barbell Squat']);

        $response = $this->get(route('exercises.show', $exercise->slug));

        $response->assertOk();
        $response->assertSee('Barbell Squat');
    }

    public function test_show_returns_404_for_unknown_slug(): void
    {
        $response = $this->get('/exercises/does-not-exist');

        $response->assertNotFound();
    }

    public function test_show_displays_personal_best_from_completed_session_items(): void
    {
        $user = User::factory()->create();
        $exercise = Exercise::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        $workoutExercise = WorkoutExercise::factory()->create(['workout_id' => $workout->id, 'exercise_id' => $exercise->id]);
        $session = WorkoutSession::factory()->create(['user_id' => $user->id, 'workout_id' => $workout->id]);

        WorkoutSessionItem::factory()->create([
            'session_id' => $session->id,
            'workout_exercise_id' => $workoutExercise->id,
            'done' => true,
            'actual_weight' => 60,
            'actual_reps' => 5,
        ]);

        $response = $this->actingAs($user)->get(route('exercises.show', $exercise->slug));

        $response->assertOk();
        $response->assertSee('60 kg', false);
    }

    public function test_show_picks_the_heaviest_completed_set_across_sessions_as_personal_best(): void
    {
        $user = User::factory()->create();
        $exercise = Exercise::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        $workoutExercise = WorkoutExercise::factory()->create(['workout_id' => $workout->id, 'exercise_id' => $exercise->id]);
        $earlierSession = WorkoutSession::factory()->create(['user_id' => $user->id, 'workout_id' => $workout->id]);
        $laterSession = WorkoutSession::factory()->create(['user_id' => $user->id, 'workout_id' => $workout->id]);

        WorkoutSessionItem::factory()->create([
            'session_id' => $earlierSession->id, 'workout_exercise_id' => $workoutExercise->id,
            'done' => true, 'actual_weight' => 60, 'actual_reps' => 5,
        ]);
        WorkoutSessionItem::factory()->create([
            'session_id' => $laterSession->id, 'workout_exercise_id' => $workoutExercise->id,
            'done' => true, 'actual_weight' => 70, 'actual_reps' => 3,
        ]);

        $response = $this->actingAs($user)->get(route('exercises.show', $exercise->slug));

        $response->assertOk();
        $response->assertSee('70 kg', false);
        $response->assertDontSee('60 kg', false);
    }

    public function test_show_ignores_incomplete_sets_for_personal_best(): void
    {
        $user = User::factory()->create();
        $exercise = Exercise::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        $workoutExercise = WorkoutExercise::factory()->create(['workout_id' => $workout->id, 'exercise_id' => $exercise->id]);
        $session = WorkoutSession::factory()->create(['user_id' => $user->id, 'workout_id' => $workout->id]);

        WorkoutSessionItem::factory()->create([
            'session_id' => $session->id, 'workout_exercise_id' => $workoutExercise->id,
            'done' => false, 'actual_weight' => 90, 'actual_reps' => 5,
        ]);

        $response = $this->actingAs($user)->get(route('exercises.show', $exercise->slug));

        $response->assertOk();
        $response->assertDontSee('90 kg', false);
    }
}