<?php

declare(strict_types=1);

namespace MeshVault\Tests\Unit\Catalog;

use InvalidArgumentException;
use MeshVault\Catalog\ModelMetadata;
use PHPUnit\Framework\Attributes\DataProvider;
use PHPUnit\Framework\TestCase;

final class ModelMetadataTest extends TestCase
{
    public function testContractExists(): void
    {
        self::assertTrue(class_exists(ModelMetadata::class));
    }

    #[DataProvider('invalidTitles')]
    public function testInvalidTitles(string $title): void
    {
        $this->expectException(InvalidArgumentException::class);
        ModelMetadata::validateTitle($title);
    }

    public static function invalidTitles(): array
    {
        return [[''], [" \t\n"], ["a\0b"], ["\xff"], [str_repeat('é', 256)]];
    }

    public function testPreservesValidAndUnchangedLegacyValues(): void
    {
        $old = ['title' => '', 'notes' => "\xff", 'sourceURL' => 'not a URL'];
        self::assertSame($old, ModelMetadata::replacement($old, $old));
        $new = ['title' => ' ' . str_repeat('é', 253) . ' ', 'notes' => "\xff", 'sourceURL' => 'not a URL'];
        self::assertSame($new, ModelMetadata::replacement($old, $new));
        $old = ['title' => 'T', 'notes' => 'old', 'sourceURL' => 'old'];
        self::assertSame(['title' => 'T', 'notes' => null, 'sourceURL' => null], ModelMetadata::replacement(
            $old,
            ['title' => 'T', 'notes' => '', 'sourceURL' => '']
        ));
        ModelMetadata::validateTitle('é');
        self::assertSame(" \n", ModelMetadata::replacement($old, array_replace($old, ['notes' => " \n"]))['notes']);
    }

    #[DataProvider('urls')]
    public function testUrls(string $url, bool $valid): void
    {
        $old = ['title' => 'T', 'notes' => null, 'sourceURL' => null];
        if (!$valid) {
            $this->expectException(InvalidArgumentException::class);
        }
        $result = ModelMetadata::replacement($old, array_replace($old, ['sourceURL' => $url]));
        self::assertSame($url, $result['sourceURL']);
    }

    public static function urls(): array
    {
        $valid = ['https://example.com/a?q=x#f', 'http://127.0.0.1:80/', 'https://[::1]/',
            'https://xn--bcher-kva.example/%C3%A9', 'https://example.com/' . str_repeat('a', 2028)];
        $invalid = ['relative', 'ftp://example.com', 'https://', 'https://u:p@example.com',
            'https://u@example.com', "https://example.com/\n", 'https://example.com/a b',
            'https://example.com/\\x', 'https://example.com/%zz', 'https://example.com/%',
            'https://example.com/é', 'http://example.com:65536', 'http://example.com:abc',
            'https://example.com/' . str_repeat('a', 2030)];
        return array_merge(
            array_map(static fn ($v) => [$v, true], $valid),
            array_map(static fn ($v) => [$v, false], $invalid)
        );
    }

    #[DataProvider('badShapes')]
    public function testExactShape(array $shape): void
    {
        $this->expectException(InvalidArgumentException::class);
        ModelMetadata::validateShape($shape);
    }

    public static function badShapes(): array
    {
        return [[[]], [['title' => 'T', 'notes' => null]],
            [['title' => null, 'notes' => null, 'sourceURL' => null]],
            [['title' => 'T', 'notes' => 1, 'sourceURL' => null]],
            [['title' => 'T', 'notes' => null, 'sourceURL' => false]],
            [['title' => 'T', 'notes' => null, 'sourceURL' => null, 'extra' => null]]];
    }

    #[DataProvider('badNotes')]
    public function testChangedNotesMustBePortable(string $notes): void
    {
        $old = ['title' => 'T', 'notes' => null, 'sourceURL' => null];
        $this->expectException(InvalidArgumentException::class);
        ModelMetadata::replacement($old, array_replace($old, ['notes' => $notes]));
    }

    public static function badNotes(): array
    {
        return [["\xff"], ["a\0b"]];
    }
}