<?php

declare(strict_types=1);

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

use Brain\Monkey\Functions;
use LIT\MCP\Integrations\WordPress\PostGuard;
use LIT\MCP\Tests\Support\LibraryFixtures;
use LIT\MCP\Tests\Support\ThemeBuilderFixtures;
use LIT\MCP\Tests\Unit\TestCase;
use WP_Post;

final class ThemeBuilderAccessTest extends TestCase
{
    protected function setUp(): void
    {
        parent::setUp();
        Functions\when('get_post_type_object')->justReturn(null);
    }

    /** Spec §4.5 + F12/F23: edit_others_posts and Divi's role option "Theme Builder". */
    public function testUsingTheThemeBuilderNeedsEditOthersPostsAndTheDiviRole(): void
    {
        LibraryFixtures::given([]);
        self::assertNull(ThemeBuilderFixtures::access()->canUse());
        self::assertToolError(ThemeBuilderFixtures::access(['theme_builder'])->canUse(), 'forbidden');
        self::assertFalse(ThemeBuilderFixtures::access(['theme_builder'])->visible());
        self::assertFalse(ThemeBuilderFixtures::access([], true, null, false)->visible());

        LibraryFixtures::given([], ['edit_others_posts']);
        self::assertToolError(ThemeBuilderFixtures::access()->canUse(), 'forbidden');
    }

    /** Ruling Q15: Divi's Theme Builder page also needs edit_theme_options (theme-builder.php:2059-2063). */
    public function testWithoutEditThemeOptionsTheThemeBuilderIsHidden(): void
    {
        LibraryFixtures::given([ThemeBuilderFixtures::layout(1062), ThemeBuilderFixtures::templatePost()], [
            'edit_theme_options',
        ]);
        $access = ThemeBuilderFixtures::access();

        self::assertToolError($access->canUse(), 'forbidden');
        self::assertStringContainsString('edit_theme_options', self::clientError($access->canUse())['message']);
        self::assertFalse($access->visible());
        self::assertFalse($access->canEditTemplate(ThemeBuilderFixtures::TEMPLATE));
        self::assertToolError($access->canCreate(), 'forbidden');
        $hidden = $access->layout(1062, false);
        self::assertSame(self::clientError($hidden), self::clientError(PostGuard::notFound(1062)));
        $template = self::assertToolError($access->template(ThemeBuilderFixtures::TEMPLATE, false), 'not_found');
        self::assertSame('Theme-Builder-Vorlage 1066 gibt es nicht.', $template['message'], 'like a missing ID');
    }

    /** P12 pattern: without access a layout ID answers exactly like a missing one. */
    public function testLayoutsAreHiddenLikeMissingIdsWithoutAccess(): void
    {
        $body = ThemeBuilderFixtures::layout(1062);
        LibraryFixtures::given([$body, LibraryFixtures::page('')]);

        self::assertInstanceOf(WP_Post::class, ThemeBuilderFixtures::access()->layout(1062, false));
        self::assertNull(ThemeBuilderFixtures::access()->layout(7, false), 'a page is no layout');
        $missing = ThemeBuilderFixtures::access(['theme_builder'])->layout(1062, false);
        $hidden = ThemeBuilderFixtures::access([], true, null, false)->layout(1062, false);
        self::assertToolError($missing, 'not_found');
        self::assertSame(self::clientError($missing), self::clientError(\LIT\MCP\Integrations\WordPress\PostGuard::notFound(1062)));
        self::assertToolError($hidden, 'not_found');

        LibraryFixtures::given([$body], ['edit_post']);
        self::assertToolError(ThemeBuilderFixtures::access()->layout(1062, false), 'forbidden');
    }

    public function testWritingALayoutNeedsTheGroupAndAPublishedLayout(): void
    {
        LibraryFixtures::given([ThemeBuilderFixtures::layout(1062), ThemeBuilderFixtures::layout(1063, ['post_status' => 'trash'])]);

        self::assertInstanceOf(WP_Post::class, ThemeBuilderFixtures::access()->layout(1062, true));
        self::assertToolError(ThemeBuilderFixtures::access([], false)->layout(1062, true), 'forbidden');
        self::assertToolError(ThemeBuilderFixtures::access()->layout(1063, true), 'validation_failed');
    }

    public function testTemplatesAreTheOnlyTemplateIds(): void
    {
        LibraryFixtures::given([ThemeBuilderFixtures::templatePost(), ThemeBuilderFixtures::layout(1062)]);

        self::assertInstanceOf(WP_Post::class, ThemeBuilderFixtures::access()->template(1066, true));
        self::assertToolError(ThemeBuilderFixtures::access()->template(1062, false), 'not_found');
        self::assertToolError(ThemeBuilderFixtures::access()->template(999, false), 'not_found');
        self::assertToolError(ThemeBuilderFixtures::access()->template('x', false), 'validation_failed');
        self::assertToolError(ThemeBuilderFixtures::access(['theme_builder'])->template(1066, false), 'not_found');
        self::assertToolError(ThemeBuilderFixtures::access([], false)->template(1066, true), 'forbidden');
    }

    public function testCreatingNeedsPublishRightsAndTheGroup(): void
    {
        LibraryFixtures::given([]);
        self::assertNull(ThemeBuilderFixtures::access()->canCreate());
        self::assertToolError(ThemeBuilderFixtures::access([], false)->canCreate(), 'forbidden');

        LibraryFixtures::given([], ['publish_posts']);
        self::assertToolError(ThemeBuilderFixtures::access()->canCreate(), 'forbidden');
    }

    /** E7: an unsaved Theme Builder session would later replace the template list. */
    public function testAThemeBuilderDraftBlocksWrites(): void
    {
        self::assertNull(ThemeBuilderFixtures::access()->draftRefusal());
        $blocked = ThemeBuilderFixtures::access([], true, ThemeBuilderFixtures::store([], 999))->draftRefusal();
        self::assertToolError($blocked, 'unsupported');
        self::assertStringContainsString('Entwurf', self::clientError($blocked)['message']);
    }

    /** Ruling Q8/B11: tb-list names a template's ID only to a user who may edit it. */
    public function testTemplateIdsAreNamedOnlyToEditors(): void
    {
        LibraryFixtures::given([], []);
        self::assertTrue(ThemeBuilderFixtures::access()->canEditTemplate(1066));
        self::assertFalse(ThemeBuilderFixtures::access(['theme_builder'])->canEditTemplate(1066));
        self::assertFalse(ThemeBuilderFixtures::access([], true, null, false)->canEditTemplate(1066));

        LibraryFixtures::given([], ['edit_post']);
        self::assertFalse(ThemeBuilderFixtures::access()->canEditTemplate(1066));
    }

    /** Ruling Q8/B10: reattach/activate only with published layouts of the right area (Divi trashes marked ones). */
    public function testLayoutsMustBePublishedBeforeTheTemplateGoesBackOrLive(): void
    {
        LibraryFixtures::given([
            ThemeBuilderFixtures::layout(1061),
            ThemeBuilderFixtures::layout(1062),
            ThemeBuilderFixtures::layout(1063),
        ]);
        self::assertNull(ThemeBuilderFixtures::access()->layoutsRefusal(ThemeBuilderFixtures::template()));
        self::assertNull(ThemeBuilderFixtures::access()->layoutsRefusal(
            ThemeBuilderFixtures::template(ThemeBuilderFixtures::DEFAULT_TEMPLATE)
        ), 'areas without a layout (ID 0) need nothing');

        LibraryFixtures::given([
            ThemeBuilderFixtures::layout(1061),
            ThemeBuilderFixtures::layout(1062, ['post_status' => 'trash']),
        ]);
        $refusal = ThemeBuilderFixtures::access()->layoutsRefusal(ThemeBuilderFixtures::template());
        self::assertToolError($refusal, 'validation_failed');
        self::assertSame(['layouts.body', 'layouts.footer'], array_keys(self::errorFields($refusal)));

        LibraryFixtures::given([
            ThemeBuilderFixtures::layout(1061),
            ThemeBuilderFixtures::layout(1063, ['ID' => 1062]),
            ThemeBuilderFixtures::layout(1063),
        ]);
        $refusal = ThemeBuilderFixtures::access()->layoutsRefusal(ThemeBuilderFixtures::template());
        self::assertSame(['layouts.body'], array_keys(self::errorFields($refusal)), 'a footer is no body');
    }
}