<?php

declare(strict_types=1);

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

use LIT\MCP\Abilities\Rev;
use LIT\MCP\Integrations\Divi\BlockTree\AttrMap;
use LIT\MCP\Integrations\Divi\BlockTree\NodeIndex;
use LIT\MCP\Integrations\Divi\BlockTree\Parser;
use LIT\MCP\Tests\Support\DiviFixtures;

final class DiviDuplicateNodeAbilityTest extends DiviWriteAbilityTestCase
{
    /** The copy sits directly after the original; its own child content is byte-identical, nothing else changes. */
    public function testDuplicateInsertsTheCopyDirectlyAfterTheOriginal(): void
    {
        $sectionOpen = '<!-- wp:divi/section {"module":{"meta":{"adminLabel":{"desktop":{"value":"Leistungen"}}}},'
            . '"builderVersion":"5.2.1"} -->';
        $sectionClose = '<!-- /wp:divi/section -->';
        $start = strpos($this->original, $sectionOpen) + strlen($sectionOpen);
        $end = strpos($this->original, $sectionClose, $start);
        $rowBytes = substr($this->original, $start, $end - $start);
        $original = $sectionOpen . $rowBytes . $sectionClose;
        self::assertStringContainsString($original, $this->original, 'precondition: exact bytes as expected');

        $result = $this->duplicate()->execute(['post_id' => 7, 'tree_rev' => $this->treeRev(), 'id' => 's1']);

        self::assertSame('s2', $result['changed'][0]['id']);
        self::assertSame('Leistungen (Kopie)', $result['changed'][0]['label']);
        self::assertStringContainsString('Leistungen', (string) $result['outline'], 'the outline is embedded in the result');

        $copyOpen = str_replace('"Leistungen"', '"Leistungen (Kopie)"', $sectionOpen);
        $copy = $copyOpen . $rowBytes . $sectionClose;
        self::assertSame(
            str_replace($original, $original . $copy, $this->original),
            $this->saved[0],
            'copy directly after the original, byte-identical child content, nothing else changes'
        );
    }

    /** A global module copy stays a byte-identical reference (read-only nodes move/duplicate as a whole). */
    public function testDuplicateGlobalModuleCopyIsAByteIdenticalReference(): void
    {
        $mixed = DiviFixtures::markup('synthetic-mixed.html');
        $this->post->post_content = $mixed;
        $globalRow = '<!-- wp:divi/row {"globalModule":"913","module":{"meta":{"adminLabel":{"desktop":{"value":'
            . '"Globale Zeile"}}}}} --><!-- wp:divi/column {"builderVersion":"5.2.1"} --><!-- wp:divi/text '
            . '{"content":{"innerContent":{"desktop":{"value":"lokal"}}}} /--><!-- /wp:divi/column --><!-- /wp:divi/row'
            . ' -->';
        self::assertStringContainsString($globalRow, $mixed, 'precondition: exact bytes as expected');

        $result = $this->duplicate()->execute(['post_id' => 7, 'tree_rev' => Rev::of($mixed), 'id' => 's1.g1']);

        self::assertSame('s1.g2', $result['changed'][0]['id']);
        self::assertSame('divi/row', $result['changed'][0]['type']);
        self::assertSame('Globale Zeile', $result['changed'][0]['label'], 'opaque copies keep their label unchanged');
        self::assertSame(str_replace($globalRow, $globalRow . $globalRow, $mixed), $this->saved[0]);
    }

    /**
     * Fix round 1 (Important-1): the copy's admin label must be the raw stored desktop value
     * plus " (Kopie)" – never NodeSummary::label()'s display-shortened text (80-char limit).
     */
    public function testDuplicateCopiesALongAdminLabelVerbatim(): void
    {
        $long = str_repeat('Ausführliche Beschriftung, ', 4) . 'Ende';
        self::assertGreaterThan(80, strlen($long), 'precondition: longer than the NodeSummary::label() display limit');
        $content = str_replace(
            '"module":{"meta":{"adminLabel":{"desktop":{"value":"Hero – Button"}}}}',
            '"module":{"meta":{"adminLabel":{"desktop":{"value":"' . $long . '"}}}}',
            $this->original
        );
        self::assertNotSame($content, $this->original, 'precondition: replaced exactly once');
        $this->post->post_content = $content;

        $result = $this->duplicate()->execute(['post_id' => 7, 'tree_rev' => Rev::of($content), 'id' => 's0.r0.c1.m2']);

        self::assertTrue($result['ok'], (string) json_encode($result));
        $index = NodeIndex::build((new Parser())->parse($this->saved[0]));
        $copy = $index->find('s0.r0.c1.m3');
        self::assertNotNull($copy, 'the duplicate sits right after the original module');
        self::assertSame(
            $long . ' (Kopie)',
            AttrMap::desktop($copy->attrs(), 'module.meta.adminLabel'),
            'stored verbatim, not shortened/ellipsised for display'
        );
    }

    public function testDuplicateCopiesALabelWithNewlinesAndMultipleSpacesVerbatim(): void
    {
        $messy = "Erste Zeile   mit   viel  Leerraum\nZweite Zeile";
        $encoded = substr((string) json_encode($messy, JSON_UNESCAPED_UNICODE), 1, -1);
        $content = str_replace(
            '"module":{"meta":{"adminLabel":{"desktop":{"value":"Hero – Button"}}}}',
            '"module":{"meta":{"adminLabel":{"desktop":{"value":"' . $encoded . '"}}}}',
            $this->original
        );
        self::assertNotSame($content, $this->original, 'precondition: replaced exactly once');
        $this->post->post_content = $content;

        $result = $this->duplicate()->execute(['post_id' => 7, 'tree_rev' => Rev::of($content), 'id' => 's0.r0.c1.m2']);

        self::assertTrue($result['ok'], (string) json_encode($result));
        $index = NodeIndex::build((new Parser())->parse($this->saved[0]));
        $copy = $index->find('s0.r0.c1.m3');
        self::assertNotNull($copy, 'the duplicate sits right after the original module');
        self::assertSame(
            $messy . ' (Kopie)',
            AttrMap::desktop($copy->attrs(), 'module.meta.adminLabel'),
            'whitespace/newlines kept verbatim, not collapsed'
        );
    }
}