<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Form\Tests\Extension\Core\DataTransformer;

use Symfony\Component\Form\Exception\TransformationFailedException;
use Symfony\Component\Form\Extension\Core\DataTransformer\BaseDateTimeTransformer;
use Symfony\Component\Form\Extension\Core\DataTransformer\DateTimeToHtml5LocalDateTimeTransformer;
use Symfony\Component\Form\Tests\Extension\Core\DataTransformer\Traits\DateTimeEqualsTrait;

class DateTimeToHtml5LocalDateTimeTransformerTest extends BaseDateTimeTransformerTestCase
{
    use DateTimeEqualsTrait;

    public static function transformProvider()
    {
        return [
            ['UTC', 'UTC', '2010-02-03 04:05:06 UTC', '2010-02-03T04:05:06'],
            ['UTC', 'UTC', null, ''],
            ['America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:06 America/New_York', '2010-02-03T17:05:06'],
            ['America/New_York', 'Asia/Hong_Kong', null, ''],
            ['UTC', 'Asia/Hong_Kong', '2010-02-03 04:05:06 UTC', '2010-02-03T12:05:06'],
            ['America/New_York', 'UTC', '2010-02-03 04:05:06 America/New_York', '2010-02-03T09:05:06'],
        ];
    }

    public static function reverseTransformProvider()
    {
        return [
            // format without seconds, as appears in some browsers
            ['UTC', 'UTC', '2010-02-03 04:05:06 UTC', '2010-02-03T04:05:06'],
            ['UTC', 'UTC', null, ''],
            ['America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:06 America/New_York', '2010-02-03T17:05:06'],
            ['America/New_York', 'Asia/Hong_Kong', null, ''],
            ['UTC', 'Asia/Hong_Kong', '2010-02-03 04:05:06 UTC', '2010-02-03T12:05:06'],
            ['America/New_York', 'UTC', '2010-02-03 04:05:06 America/New_York', '2010-02-03T09:05:06'],
            ['UTC', 'UTC', '2010-02-03 04:05:00 UTC', '2010-02-03T04:05'],
            ['America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:00 America/New_York', '2010-02-03T17:05'],
            ['Europe/Amsterdam', 'Europe/Amsterdam', '2013-08-21 10:30:00 Europe/Amsterdam', '2013-08-21T10:30:00'],
            ['UTC', 'UTC', '2018-09-15T10:00:00Z', '2018-09-15T10:00:00Z'],
            ['Europe/Berlin', 'Europe/Berlin', '2018-09-15T10:00:00+02:00', '2018-09-15T10:00:00+02:00'],
            ['Europe/Berlin', 'Europe/Berlin', '2018-09-15T10:00:00+0200', '2018-09-15T10:00:00+0200'],
            ['UTC', 'UTC', '2018-10-03T10:00:00.000Z', '2018-10-03T10:00:00.000Z'],
        ];
    }

    /**
     * @dataProvider transformProvider
     */
    public function testTransform($fromTz, $toTz, $from, $to)
    {
        $transformer = new DateTimeToHtml5LocalDateTimeTransformer($fromTz, $toTz);

        $this->assertSame($to, $transformer->transform(null !== $from ? new \DateTime($from) : null));
    }

    /**
     * @dataProvider transformProvider
     */
    public function testTransformDateTimeImmutable($fromTz, $toTz, $from, $to)
    {
        $transformer = new DateTimeToHtml5LocalDateTimeTransformer($fromTz, $toTz);

        $this->assertSame($to, $transformer->transform(null !== $from ? new \DateTimeImmutable($from) : null));
    }

    public function testTransformRequiresValidDateTime()
    {
        $this->expectException(TransformationFailedException::class);
        $transformer = new DateTimeToHtml5LocalDateTimeTransformer();
        $transformer->transform('2010-01-01');
    }

    /**
     * @dataProvider reverseTransformProvider
     */
    public function testReverseTransform($toTz, $fromTz, $to, $from)
    {
        $transformer = new DateTimeToHtml5LocalDateTimeTransformer($toTz, $fromTz);

        if (null !== $to) {
            $this->assertDateTimeEquals(new \DateTime($to), $transformer->reverseTransform($from));
        } else {
            $this->assertNull($transformer->reverseTransform($from));
        }
    }

    public function testReverseTransformRequiresString()
    {
        $this->expectException(TransformationFailedException::class);
        $transformer = new DateTimeToHtml5LocalDateTimeTransformer();
        $transformer->reverseTransform(12345);
    }

    public function testReverseTransformWithNonExistingDate()
    {
        $this->expectException(TransformationFailedException::class);
        $transformer = new DateTimeToHtml5LocalDateTimeTransformer('UTC', 'UTC');

        $transformer->reverseTransform('2010-04-31T04:05');
    }

    public function testReverseTransformExpectsValidDateString()
    {
        $this->expectException(TransformationFailedException::class);
        $transformer = new DateTimeToHtml5LocalDateTimeTransformer('UTC', 'UTC');

        $transformer->reverseTransform('2010-2010-2010');
    }

    protected function createDateTimeTransformer(string $inputTimezone = null, string $outputTimezone = null): BaseDateTimeTransformer
    {
        return new DateTimeToHtml5LocalDateTimeTransformer($inputTimezone, $outputTimezone);
    }
}
