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1<?php
2namespace Apie\Faker\Datalayers;
3
4use Apie\Core\Entities\EntityInterface;
5use Faker\Generator;
6use Iterator;
7use ReflectionClass;
8
9/**
10 * @template T of EntityInterface
11 * @implements Iterator<int, T>
12 */
13class FakeIterator implements Iterator
14{
15    private int $offset;
16
17    private ?EntityInterface $currentEntity;
18
19    /**
20     * @param ReflectionClass<T> $class
21     */
22    public function __construct(
23        private readonly int $count,
24        private readonly ReflectionClass $class,
25        private readonly Generator $faker
26    ) {
27        $this->rewind();
28    }
29    /**
30     * @return T|null
31     */
32    public function current(): ?EntityInterface
33    {
34        return $this->currentEntity;
35    }
36
37    private function updateCurrent(): void
38    {
39        if ($this->offset >= $this->count) {
40            $this->currentEntity = null;
41            return;
42        }
43        $this->currentEntity = $this->faker->fakeClass($this->class->name);
44    }
45    public function key(): int
46    {
47        return $this->offset;
48    }
49    public function next(): void
50    {
51        $this->offset++;
52        $this->updateCurrent();
53    }
54    public function rewind(): void
55    {
56        $this->offset = 0;
57        $this->updateCurrent();
58    }
59    public function valid(): bool
60    {
61        return null !== $this->currentEntity;
62    }
63}