<?php

declare(strict_types=1);

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

use Brain\Monkey\Functions;
use LIT\MCP\Integrations\Divi\Design\CustomCssArea;
use LIT\MCP\Integrations\Divi\Design\CustomCssRestorePlanner;
use LIT\MCP\Integrations\Divi\Design\DesignPlan;
use LIT\MCP\Integrations\Divi\Design\ThemeOptionsAdapter;
use LIT\MCP\Integrations\Divi\Release\DiviFeature;
use LIT\MCP\Tests\Support\FakeCustomCssStore;
use LIT\MCP\Tests\Unit\TestCase;
use Mockery;

final class CustomCssRestorePlannerTest extends TestCase
{
    private function planner(bool $customize = true): CustomCssRestorePlanner
    {
        $options = Mockery::mock(ThemeOptionsAdapter::class);
        $options->allows('canCustomize')->andReturn($customize);

        return new CustomCssRestorePlanner(new FakeCustomCssStore(), $options);
    }

    public function testDescribesItsAreaRightsAndFeatures(): void
    {
        Functions\when('current_user_can')->justReturn(true);
        $planner = $this->planner();

        self::assertSame('custom_css', $planner->area());
        self::assertInstanceOf(CustomCssArea::class, $planner->designArea());
        self::assertSame([DiviFeature::ThemeOptionRead, DiviFeature::ThemeOptionWrite], $planner->features());
        self::assertNull($planner->rights());

        Functions\when('current_user_can')->alias(static fn (string $cap): bool => $cap !== 'edit_css');
        self::assertToolError($planner->rights(), 'forbidden');
    }

    public function testThePlanReplacesTheWholeTextWithTheSnapshots(): void
    {
        $plan = $this->planner()->plan(
            ['stylesheet' => 'Divi', 'css' => ".new{}\n.keep{}"],
            ['stylesheet' => 'Divi', 'css' => ".old{}\n.keep{}"],
            'custom_css-20261105T100000Z-abc123'
        );

        self::assertInstanceOf(DesignPlan::class, $plan);
        self::assertSame(['stylesheet' => 'Divi', 'css' => ".old{}\n.keep{}"], $plan->raw);
        self::assertTrue($plan->mayRemove);
        self::assertSame([
            ['action' => 'removed', 'line' => '.new{}'],
            ['action' => 'added', 'line' => '.old{}'],
        ], $plan->diff);
        self::assertStringStartsWith('Snapshot custom_css-20261105T100000Z-abc123 wiederherstellen', $plan->summary);
        self::assertSame([CustomCssArea::SITE_WIDE], $plan->warnings);
    }

    public function testAnUnchangedTextIsAnEmptyPlan(): void
    {
        $plan = $this->planner()->plan(
            ['stylesheet' => 'Divi', 'css' => '.a{}'],
            ['stylesheet' => 'Divi', 'css' => '.a{}'],
            'custom_css-x'
        );

        self::assertInstanceOf(DesignPlan::class, $plan);
        self::assertTrue($plan->isEmpty());
        self::assertSame([], $plan->warnings);
    }

    /** A snapshot of another theme would land in this theme's CSS. */
    public function testASnapshotOfAnotherThemeIsRefused(): void
    {
        $result = $this->planner()->plan(
            ['stylesheet' => 'Divi', 'css' => '.a{}'],
            ['stylesheet' => 'Child', 'css' => '.b{}'],
            'custom_css-x'
        );

        $error = self::assertToolError($result, 'validation_failed');
        self::assertStringContainsString('Theme „Child“, aktiv ist „Divi“', $error['message']);
    }
}