<?php

declare(strict_types=1);

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

use LIT\MCP\Integrations\Divi\BlockTree\Block;
use LIT\MCP\Integrations\Divi\BlockTree\NodeIndex;
use LIT\MCP\Integrations\Divi\BlockTree\Parser;
use LIT\MCP\Integrations\Divi\Design\DetachRewrite;
use LIT\MCP\Integrations\Divi\Design\PresetScope;
use PHPUnit\Framework\TestCase;

final class DetachRewriteTest extends TestCase
{
    /** @return NodeIndex Blocks below s0.r0.c0 are m0, m1, … (g0, … for instances) in the order of $inner. */
    private static function index(string $inner): NodeIndex
    {
        return NodeIndex::build((new Parser())->parse(
            '<!-- wp:divi/section --><!-- wp:divi/row --><!-- wp:divi/column -->' . $inner
            . '<!-- /wp:divi/column --><!-- /wp:divi/row --><!-- /wp:divi/section -->'
        ));
    }

    private static function node(NodeIndex $index, string $id): Block
    {
        $block = $index->find('s0.r0.c0.' . $id);
        self::assertNotNull($block);

        return $block;
    }

    public function testRemovesAModulePresetFromTheStack(): void
    {
        $index = self::index(
            '<!-- wp:divi/button {"modulePreset":["aaaaaaaaaa","bbbbbbbbbb"]} /-->'
            . '<!-- wp:divi/button {"modulePreset":["aaaaaaaaaa"],"x":1} /-->'
            . '<!-- wp:divi/text {"modulePreset":["aaaaaaaaaa"]} /-->'
            . '<!-- wp:divi/button {"modulePreset":"aaaaaaaaaa"} /-->'
            . '<!-- wp:divi/button {"modulePreset":["cccccccccc"]} /-->'
        );
        $rewrite = new DetachRewrite(new PresetScope('module', 'divi/button'), 'aaaaaaaaaa');

        self::assertSame(['modulePreset' => ['bbbbbbbbbb']], $rewrite->rewrite(self::node($index, 'm0')));
        self::assertSame(['x' => 1], $rewrite->rewrite(self::node($index, 'm1')), 'an empty stack leaves no key');
        self::assertNull($rewrite->rewrite(self::node($index, 'm2')), 'another module');
        self::assertSame([], $rewrite->rewrite(self::node($index, 'm3')), 'legacy string form');
        self::assertNull($rewrite->rewrite(self::node($index, 'm4')), 'the ID is not in the stack');
    }

    public function testRemovesAGroupPresetFromEveryEntryOfTheGroup(): void
    {
        $index = self::index(
            '<!-- wp:divi/text {"groupPreset":{'
            . '"content.decoration.bodyFont":{"presetId":["gggggggggg","hhhhhhhhhh"],"groupName":"divi/font-body"},'
            . '"module.decoration.spacing":{"presetId":["gggggggggg"],"groupName":"divi/spacing"}}} /-->'
            . '<!-- wp:divi/text {"groupPreset":{"content.decoration.bodyFont":'
            . '{"presetId":["gggggggggg"],"groupName":"divi/font-body"}},"x":1} /-->'
            . '<!-- wp:divi/text {"groupPreset":{"module.decoration.spacing":'
            . '{"presetId":["gggggggggg"],"groupName":"divi/spacing"}}} /-->'
            . '<!-- wp:core/paragraph {"groupPreset":{"content.decoration.bodyFont":'
            . '{"presetId":["gggggggggg"],"groupName":"divi/font-body"}}} /-->'
        );
        $rewrite = new DetachRewrite(new PresetScope('group', 'divi/font-body'), 'gggggggggg');

        $first = $rewrite->rewrite(self::node($index, 'm0'));
        self::assertSame(['hhhhhhhhhh'], $first['groupPreset']['content.decoration.bodyFont']['presetId'] ?? null);
        self::assertSame(
            ['presetId' => ['gggggggggg'], 'groupName' => 'divi/spacing'],
            $first['groupPreset']['module.decoration.spacing'] ?? null,
            'another group keeps its preset'
        );
        self::assertSame(['x' => 1], $rewrite->rewrite(self::node($index, 'm1')), 'empty entry and map are removed');
        self::assertNull($rewrite->rewrite(self::node($index, 'm2')), 'the ID sits in another group');
        self::assertNull($rewrite->rewrite(self::node($index, 'x0')), 'not a Divi block');
    }

    public function testAnUntouchedBlockStaysNull(): void
    {
        $index = self::index('<!-- wp:divi/button /--><!-- wp:divi/text {"groupPreset":{}} /-->');

        self::assertNull(
            (new DetachRewrite(new PresetScope('module', 'divi/button'), 'aaaaaaaaaa'))->rewrite(self::node($index, 'm0'))
        );
        self::assertNull(
            (new DetachRewrite(new PresetScope('group', 'divi/font-body'), 'gggggggggg'))->rewrite(self::node($index, 'm1'))
        );
    }

    public function testNotesAreEmpty(): void
    {
        $index = self::index('<!-- wp:divi/button /-->');

        self::assertSame(
            [],
            (new DetachRewrite(new PresetScope('module', 'divi/button'), 'aaaaaaaaaa'))
                ->notes(self::node($index, 'm0'), 's0.r0.c0.m0')
        );
    }

    public function testInstancesThatMentionTheIdConcernTheRewrite(): void
    {
        $index = self::index(
            '<!-- wp:divi/global-layout {"globalModule":"1058","blockName":"divi/button",'
            . '"localAttrs":{"modulePreset":["aaaaaaaaaa"]}} /-->'
            . '<!-- wp:divi/global-layout {"globalModule":"1059","blockName":"divi/section"} -->'
            . '<!-- wp:divi/button {"modulePreset":["aaaaaaaaaa"],"globalParent":"1059"} /-->'
            . '<!-- /wp:divi/global-layout -->'
        );
        $rewrite = new DetachRewrite(new PresetScope('module', 'divi/button'), 'aaaaaaaaaa');
        $other = new DetachRewrite(new PresetScope('module', 'divi/button'), 'bbbbbbbbbb');

        self::assertTrue($rewrite->concernsInstance(self::node($index, 'g0')), 'localAttrs');
        self::assertTrue($rewrite->concernsInstance(self::node($index, 'g1')), 'snapshot of a child');
        self::assertFalse($other->concernsInstance(self::node($index, 'g0')));
    }
}