<?php

declare(strict_types=1);

namespace KTXT\Unit\Preview;

use InvalidArgumentException;
use KTXC\Models\Tenant\TenantConfiguration;
use PHPUnit\Framework\Attributes\Test;
use PHPUnit\Framework\TestCase;

final class PreviewConfigurationTest extends TestCase
{
    #[Test]
    public function providesSafeDefaultsWhenPreviewConfigurationIsAbsent(): void
    {
        $preview = (new TenantConfiguration())->preview();

        self::assertTrue($preview->enabled());
        self::assertSame('previews', $preview->store());
        self::assertSame(26214400, $preview->maxSourceSize());
        self::assertSame(640, $preview->variants()->variant('popover')?->width);
        self::assertSame(440, $preview->variants()->variant('popover')?->height);
        self::assertSame('image/webp', $preview->variants()->variant('popover')?->format);
        self::assertSame(80, $preview->variants()->variant('popover')?->quality);
        self::assertSame(256, $preview->variants()->variant('thumbnail')?->width);
    }

    #[Test]
    public function loadsAndSerializesTenantPreviewConfiguration(): void
    {
        $data = [
            'enabled' => true,
            'store' => 'generated-content',
            'maxSourceSize' => 1024,
            'variants' => [
                'popover' => [
                    'width' => 800,
                    'height' => 600,
                    'format' => 'IMAGE/PNG',
                    'quality' => 90,
                ],
            ],
        ];

        $configuration = (new TenantConfiguration())->jsonDeserialize(['preview' => $data]);

        self::assertSame('generated-content', $configuration->preview()->store());
        self::assertSame(1024, $configuration->preview()->maxSourceSize());
        self::assertSame(['popover'], array_keys($configuration->preview()->variants()->all()));
        self::assertSame('image/png', $configuration->preview()->variants()->variant('popover')?->format);
        $data['variants']['popover']['format'] = 'image/png';
        self::assertSame($data, $configuration->jsonSerialize()['preview']);
    }

    #[Test]
    public function mergesKnownVariantDefaultsForPartialOverrides(): void
    {
        $configuration = (new TenantConfiguration())->jsonDeserialize([
            'preview' => [
                'variants' => [
                    'popover' => ['width' => 900],
                ],
            ],
        ]);

        $variant = $configuration->preview()->variants()->variant('popover');
        self::assertSame(900, $variant?->width);
        self::assertSame(440, $variant?->height);
        self::assertSame('image/webp', $variant?->format);
        self::assertSame(80, $variant?->quality);
        self::assertNull($configuration->preview()->variants()->variant('thumbnail'));
    }

    #[Test]
    public function allowsNoVariantsWhenPreviewsAreDisabled(): void
    {
        $configuration = (new TenantConfiguration())->jsonDeserialize([
            'preview' => ['enabled' => false, 'variants' => []],
        ]);

        self::assertFalse($configuration->preview()->enabled());
        self::assertSame([], $configuration->preview()->variants()->all());
    }

    /** @return iterable<string, array{array<string, mixed>}> */
    public static function invalidConfigurations(): iterable
    {
        yield 'invalid store' => [['store' => '../previews']];
        yield 'zero source limit' => [['maxSourceSize' => 0]];
        yield 'invalid variant name' => [['variants' => ['../popover' => []]]];
        yield 'invalid dimensions' => [['variants' => ['popover' => ['width' => 0]]]];
        yield 'invalid output MIME' => [['variants' => ['popover' => ['format' => 'webp']]]];
        yield 'invalid quality' => [['variants' => ['popover' => ['quality' => 101]]]];
        yield 'enabled without variants' => [['enabled' => true, 'variants' => []]];
    }

    #[Test]
    #[\PHPUnit\Framework\Attributes\DataProvider('invalidConfigurations')]
    public function rejectsInvalidConfiguration(array $data): void
    {
        $this->expectException(InvalidArgumentException::class);
        (new TenantConfiguration())->jsonDeserialize(['preview' => $data]);
    }
}