<?php

namespace Tests\Feature;

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

class GamificationTest extends TestCase
{
    use RefreshDatabase;

    protected function completeSession(User $user, Workout $workout, string $completedAt): WorkoutSession
    {
        return WorkoutSession::factory()->create([
            'user_id' => $user->id,
            'workout_id' => $workout->id,
            'completed_at' => $completedAt,
        ]);
    }

    public function test_user_with_no_sessions_has_no_streak_or_badges(): void
    {
        $user = User::factory()->create();

        $result = Gamification::forUser($user);

        $this->assertEquals(0, $result['current_streak']);
        $this->assertEquals(0, $result['longest_streak']);
        $this->assertTrue(collect($result['badges'])->every(fn ($b) => $b['earned'] === false));
    }

    public function test_a_session_completed_today_counts_as_a_one_day_streak(): void
    {
        $user = User::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        $this->completeSession($user, $workout, now()->toDateString());

        $result = Gamification::forUser($user);

        $this->assertEquals(1, $result['current_streak']);
    }

    public function test_consecutive_days_extend_the_current_streak(): void
    {
        $user = User::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        $this->completeSession($user, $workout, now()->toDateString());
        $this->completeSession($user, $workout, now()->subDay()->toDateString());
        $this->completeSession($user, $workout, now()->subDays(2)->toDateString());

        $result = Gamification::forUser($user);

        $this->assertEquals(3, $result['current_streak']);
    }

    public function test_a_gap_breaks_the_current_streak_but_longest_streak_remembers_it(): void
    {
        $user = User::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        // A 3-day streak, a week ago, with a gap since.
        $this->completeSession($user, $workout, now()->subDays(10)->toDateString());
        $this->completeSession($user, $workout, now()->subDays(9)->toDateString());
        $this->completeSession($user, $workout, now()->subDays(8)->toDateString());
        // Today, isolated.
        $this->completeSession($user, $workout, now()->toDateString());

        $result = Gamification::forUser($user);

        $this->assertEquals(1, $result['current_streak']);
        $this->assertEquals(3, $result['longest_streak']);
    }

    public function test_missing_only_today_does_not_break_the_streak_yet(): void
    {
        $user = User::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        $this->completeSession($user, $workout, now()->subDay()->toDateString());
        $this->completeSession($user, $workout, now()->subDays(2)->toDateString());

        $result = Gamification::forUser($user);

        $this->assertEquals(2, $result['current_streak']);
    }

    public function test_first_steps_badge_earned_after_one_completed_session(): void
    {
        $user = User::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        $this->completeSession($user, $workout, now()->toDateString());

        $badges = collect(Gamification::forUser($user)['badges'])->keyBy('key');

        $this->assertTrue($badges['first_steps']['earned']);
        $this->assertFalse($badges['consistent']['earned']);
    }

    public function test_consistent_badge_earned_after_ten_completed_sessions(): void
    {
        $user = User::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        for ($i = 0; $i < 10; $i++) {
            WorkoutSession::factory()->create([
                'user_id' => $user->id,
                'workout_id' => $workout->id,
                'completed_at' => now()->subDays($i * 3)->toDateString(),
            ]);
        }

        $badges = collect(Gamification::forUser($user)['badges'])->keyBy('key');

        $this->assertTrue($badges['consistent']['earned']);
    }

    public function test_century_club_badge_earned_from_a_completed_hundred_kilo_set(): void
    {
        $user = User::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        $item = WorkoutExercise::factory()->create(['workout_id' => $workout->id]);
        $session = WorkoutSession::factory()->create(['user_id' => $user->id, 'workout_id' => $workout->id]);
        WorkoutSessionItem::factory()->create([
            'session_id' => $session->id,
            'workout_exercise_id' => $item->id,
            'done' => true,
            'actual_weight' => 100,
        ]);

        $badges = collect(Gamification::forUser($user)['badges'])->keyBy('key');

        $this->assertTrue($badges['century_club']['earned']);
    }

    public function test_century_club_badge_not_earned_from_an_incomplete_set(): void
    {
        $user = User::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        $item = WorkoutExercise::factory()->create(['workout_id' => $workout->id]);
        $session = WorkoutSession::factory()->create(['user_id' => $user->id, 'workout_id' => $workout->id]);
        WorkoutSessionItem::factory()->create([
            'session_id' => $session->id,
            'workout_exercise_id' => $item->id,
            'done' => false,
            'actual_weight' => 150,
        ]);

        $badges = collect(Gamification::forUser($user)['badges'])->keyBy('key');

        $this->assertFalse($badges['century_club']['earned']);
    }

    public function test_dashboard_renders_streak_and_badges(): void
    {
        $user = User::factory()->create();
        $workout = Workout::factory()->create(['user_id' => $user->id]);
        $this->completeSession($user, $workout, now()->toDateString());

        $response = $this->actingAs($user)->get(route('dashboard'));

        $response->assertOk();
        $response->assertSee('First Steps');
        $response->assertSee('1', false);
    }
}