<?php

declare(strict_types=1);

namespace Tests\Unit\Game;

use App\Game\Entities\Zombie;
use App\Game\EntityList;
use App\Game\Room;
use App\Game\Vector2;
use PHPUnit\Framework\Attributes\Test;
use PHPUnit\Framework\TestCase;

final class EntityListTest extends TestCase
{
    #[Test]
    public function appendAndCount(): void
    {
        $room = new Room('r');
        $list = new EntityList();
        $zombie = new Zombie(0.0, 0.0, $list, $room);
        $list->append($zombie);
        $this->assertCount(1, $list);
    }

    #[Test]
    public function removeRemovesInstance(): void
    {
        $room = new Room('r');
        $list = new EntityList();
        $a = new Zombie(0.0, 0.0, $list, $room);
        $b = new Zombie(10.0, 0.0, $list, $room);
        $list->append($a);
        $list->append($b);
        $list->remove($a);
        $this->assertCount(1, $list);
        $this->assertSame($b, $list[1]);
    }

    #[Test]
    public function removeLeavesNoGapsAfterManyRemovals(): void
    {
        $room = new Room('r');
        $list = new EntityList();
        $items = [];
        for ($i = 0; $i < 20; $i++) {
            $items[] = new Zombie((float) $i, 0.0, $list, $room);
        }
        foreach ($items as $item) {
            $list->append($item);
        }
        foreach ([10, 3, 17, 0] as $index) {
            $list->remove($items[$index]);
        }
        $this->assertSame(16, $list->count());
        $this->assertFalse($list->offsetExists(10));
        $this->assertTrue($list->offsetExists(2));
    }

    #[Test]
    public function findByKindFilters(): void
    {
        $room = new Room('r');
        $list = new EntityList();
        $list->append(new Zombie(0.0, 0.0, $list, $room));
        $list->append(new Zombie(10.0, 0.0, $list, $room));
        $found = $list->findByKind('zombie');
        $this->assertCount(2, $found);
        $this->assertSame([], $list->findByKind('player'));
    }

    #[Test]
    public function copyReturnsDetachedArray(): void
    {
        $room = new Room('r');
        $list = new EntityList();
        $list->append(new Zombie(0.0, 0.0, $list, $room));
        $snapshot = $list->copy();
        $list->append(new Zombie(1.0, 1.0, $list, $room));
        $this->assertCount(1, $snapshot);
        $this->assertCount(2, $list);
    }
}