<?php

declare(strict_types=1);

namespace App\Tests\Model;

use App\Model\StatisticsFilterDto;
use PHPUnit\Framework\TestCase;

class StatisticsFilterDtoTest extends TestCase
{
    public function testFreshDtoFallsBackToARollingTwelveMonthWindow(): void
    {
        $dto = new StatisticsFilterDto();

        $expectedFrom = (new \DateTimeImmutable('today'))->modify('-12 months');

        $this->assertSame(
            $expectedFrom->format('Y-m-d'),
            $dto->getEffectiveDateFrom()->format('Y-m-d'),
        );
        $this->assertSame(
            (new \DateTimeImmutable('today'))->format('Y-m-d'),
            $dto->getEffectiveDateTo()->format('Y-m-d'),
        );
        $this->assertTrue($dto->isUsingDefaultRange());
        $this->assertFalse($dto->isActive());
    }

    public function testAPickedLowerBoundStopsTheFromFallbackButNotTheToFallback(): void
    {
        $from = new \DateTimeImmutable('2025-03-01');

        $dto = (new StatisticsFilterDto())->setDateFrom($from);

        $this->assertSame($from, $dto->getEffectiveDateFrom());
        $this->assertSame(
            (new \DateTimeImmutable('today'))->format('Y-m-d'),
            $dto->getEffectiveDateTo()->format('Y-m-d'),
        );
        $this->assertFalse($dto->isUsingDefaultRange());
        $this->assertTrue($dto->isActive());
    }

    public function testBothBoundsPickedAreReturnedVerbatim(): void
    {
        $from = new \DateTimeImmutable('2025-01-01');
        $to = new \DateTimeImmutable('2025-06-30');

        $dto = (new StatisticsFilterDto())
            ->setDateFrom($from)
            ->setDateTo($to)
        ;

        $this->assertSame($from, $dto->getEffectiveDateFrom());
        $this->assertSame($to, $dto->getEffectiveDateTo());
        $this->assertFalse($dto->isUsingDefaultRange());
    }
}