<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Integrations\Divi\Library;

use LIT\MCP\Integrations\Divi\BlockTree\Block;
use LIT\MCP\Integrations\Divi\BlockTree\LibraryContent;
use LIT\MCP\Integrations\Divi\BlockTree\NodeIndex;
use LIT\MCP\Integrations\Divi\BlockTree\Parser;
use LIT\MCP\Integrations\Divi\Library\LibraryItemSpec;
use LIT\MCP\Tests\Support\DiviFixtures;
use PHPUnit\Framework\TestCase;

final class LibraryItemSpecTest extends TestCase
{
    private static function pageNode(string $id): Block
    {
        return NodeIndex::build((new Parser())->parse(DiviFixtures::markup('stage3/page--globale-instanzen.html')))
            ->find($id);
    }

    private static function libraryRoot(string $file): Block
    {
        return LibraryContent::roots(LibraryContent::load(new Parser(), DiviFixtures::markup('stage3/' . $file)))[0];
    }

    /** @return array<string, array{string, bool}> Fixture role => [node source, global]. */
    public static function builderEntries(): array
    {
        return [
            'library--library-abschnitt' => ['page:s1', false],
            'library--library-zeile' => ['page:s1.r0', false],
            'library--library-modul' => ['page:s1.r0.c0.m0', false],
            'library-global--globaler-abschnitt' => ['library:library-global--globaler-abschnitt.html', true],
            'library-global--globales-modul' => ['library:library-global--globales-modul.html', true],
        ];
    }

    /**
     * Terms and meta as Divi's own "add to library" wrote them (fixtures stage3, JSON of each entry),
     * without Divi's broken _et_pb_row_layout ("[object Object]", finding 5).
     *
     * @dataProvider builderEntries
     */
    public function testTermsAndMetaMatchTheBuilderEntries(string $source, bool $global): void
    {
        [$kind, $ref] = explode(':', $source, 2);
        $node = $kind === 'page' ? self::pageNode($ref) : self::libraryRoot($ref);
        $role = (string) $this->dataName();
        $json = json_decode(DiviFixtures::markup('stage3/' . $role . '.json'), true);

        $spec = LibraryItemSpec::forNode($node, DiviFixtures::catalog(), 'Titel', $global, 'page');

        self::assertInstanceOf(LibraryItemSpec::class, $spec);
        $expectedTerms = [];
        foreach (['scope', 'layout_type', 'module_width'] as $taxonomy) {
            $expectedTerms[$taxonomy] = array_column($json['terms'][$taxonomy], 'slug');
        }
        self::assertEquals($expectedTerms, $spec->terms());
        $expectedMeta = array_map(static fn (array $values): string => $values[0], $json['meta']);
        unset($expectedMeta['_et_pb_row_layout']);
        self::assertEquals($expectedMeta, $spec->meta());
    }

    public function testRefusesInstancesColumnsAndGlobalsInsideGlobals(): void
    {
        $catalog = DiviFixtures::catalog();

        self::assertStringContainsString(
            'bereits ein globales Modul (Bibliothekseintrag 1058)',
            (string) LibraryItemSpec::forNode(self::pageNode('g0'), $catalog, 'T', false, 'page')
        );
        self::assertStringContainsString(
            'nur Abschnitte, Zeilen und Module',
            (string) LibraryItemSpec::forNode(self::pageNode('s1.r0.c0'), $catalog, 'T', false, 'page')
        );
        self::assertStringContainsString(
            'keine globalen Module',
            (string) LibraryItemSpec::forNode(self::pageNode('s0'), $catalog, 'T', true, 'page')
        );
        self::assertInstanceOf(LibraryItemSpec::class, LibraryItemSpec::forNode(self::pageNode('s0'), $catalog, 'T', false, 'page'));
    }

    /** Ruling P11: opaque roots and instances without a readable id are refused before wrapping. */
    public function testRefusesOpaqueRootsAndUnreadableInstances(): void
    {
        $catalog = DiviFixtures::catalog();
        $document = (new Parser())->parse(
            '<!-- wp:divi/section {"module":kaputt} --><!-- /wp:divi/section -->'
                . '<!-- wp:divi/global-layout {"globalModule":["x"],"blockName":"divi/section"} /-->'
        );
        [$opaque, $instance] = $document->children();
        self::assertTrue($opaque->isOpaque());

        self::assertStringContainsString('nicht lesbar', (string) LibraryItemSpec::forNode($opaque, $catalog, 'T', false, 'page'));
        self::assertStringContainsString(
            'globales Modul',
            (string) LibraryItemSpec::forNode($instance, $catalog, 'T', false, 'page')
        );
    }

    public function testFullwidthAndTerms(): void
    {
        $section = Block::create('divi/section', ['module' => ['advanced' => ['type' => ['desktop' => ['value' => 'fullwidth']]]]]);

        $spec = LibraryItemSpec::forNode($section, DiviFixtures::catalog(), 'Kopf', false, 'page');

        self::assertSame(['fullwidth'], $spec->terms()['module_width']);
        self::assertSame([26], $spec->withTerms([26], [])->terms()['layout_category']);
        self::assertArrayNotHasKey('layout_tag', $spec->withTerms([26], [])->terms());
    }
}