<?php

declare(strict_types=1);

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

use Brain\Monkey\Actions;
use Brain\Monkey\Filters;
use Brain\Monkey\Functions;
use LIT\MCP\Abilities\Ability;
use LIT\MCP\Abilities\ExposurePolicy;
use LIT\MCP\Abilities\ToolAvailability;
use LIT\MCP\Admin\AdminTab;
use LIT\MCP\Integrations\Divi\Admin\DiviTab;
use LIT\MCP\Admin\SettingsPage;
use LIT\MCP\Compatibility\ProvidesCompatibility;
use LIT\MCP\Integrations\Core\EnvironmentComponent;
use LIT\MCP\Integrations\Divi\DiviBuilderDetector;
use LIT\MCP\Integrations\Divi\DiviEnvironmentComponent;
use LIT\MCP\Integrations\Divi\DiviIntegration;
use LIT\MCP\Integrations\Divi\DiviLogoUsage;
use LIT\MCP\Integrations\Divi\Pages\DiviContentComposer;
use LIT\MCP\Integrations\Divi\Release\DiviCheckRoute;
use LIT\MCP\Integrations\Divi\Release\DiviFeature;
use LIT\MCP\Integrations\Divi\Release\DiviProfile;
use LIT\MCP\Integrations\Divi\Release\ReleaseResolver;
use LIT\MCP\Integrations\Integration;
use LIT\MCP\Integrations\IntegrationRegistry;
use LIT\MCP\Integrations\Media\MediaUsageSource;
use LIT\MCP\Integrations\WordPress\BuilderDetector;
use LIT\MCP\Integrations\WordPress\Schema\ContentSchema;
use LIT\MCP\Tests\Support\FakeChangeLog;
use LIT\MCP\Tests\Support\FeatureFakeTool;
use LIT\MCP\Tests\Support\LibraryFixtures;
use LIT\MCP\Tests\Unit\TestCase;
use Mockery;
use WP_Error;

final class DiviIntegrationTest extends TestCase
{
    /** Grows with every task that adds Divi abilities – keep in the order of abilities(). */
    private const EXPECTED = [
        'lit/divi-outline',
        'lit/divi-node-get',
        'lit/divi-catalog',
        'lit/divi-design-system',
        'lit/divi-insert',
        'lit/divi-update',
        'lit/divi-move',
        'lit/divi-delete',
        'lit/divi-duplicate-node',
        'lit/divi-replace-text',
        'lit/divi-node-copy',
        'lit/divi-dynamic-sources',
        'lit/divi-preset-get',
        'lit/divi-presets-set',
        'lit/divi-presets-delete',
        'lit/divi-design-snapshots',
        'lit/divi-design-restore',
        'lit/divi-presets-assign',
        'lit/divi-design-detach',
        'lit/divi-colors-set',
        'lit/divi-variables-set',
        'lit/divi-theme-options-get',
        'lit/divi-theme-options-update',
        'lit/divi-custom-css-get',
        'lit/divi-custom-css-update',
        'lit/divi-fonts-upload',
    ];

    public function testProvidesTheDiviAbilitiesOnlyWithDivi5(): void
    {
        $integration = new DiviIntegration(Mockery::mock(ContentSchema::class), FakeChangeLog::forbidden());

        self::assertSame('divi', $integration->id());
        self::assertFalse($integration->isAvailable(), 'no Divi classes in unit tests');
        self::assertSame(
            self::EXPECTED,
            array_map(static fn (Ability $ability): string => $ability->name(), $integration->abilities())
        );

        foreach ($integration->abilities() as $ability) {
            self::assertSame('object', $ability->inputSchema()['type'], $ability->name());
            self::assertFalse($ability->inputSchema()['additionalProperties'], $ability->name());
            self::assertNotNull($ability->outputSchema(), $ability->name());
        }
    }

    /** Spec §3: the ports the core uses (Plugin wires them) are Divi's own implementations. */
    public function testProvidesThePortsTheCoreUses(): void
    {
        $integration = new DiviIntegration(Mockery::mock(ContentSchema::class), FakeChangeLog::forbidden());

        self::assertInstanceOf(BuilderDetector::class, $integration->builderDetector());
        self::assertInstanceOf(DiviBuilderDetector::class, $integration->builderDetector());
        $sources = $integration->mediaUsageSources();
        self::assertCount(1, $sources);
        self::assertInstanceOf(MediaUsageSource::class, $sources[0]);
        self::assertInstanceOf(DiviLogoUsage::class, $sources[0]);
        self::assertInstanceOf(EnvironmentComponent::class, $integration->environmentComponent());
        self::assertInstanceOf(DiviEnvironmentComponent::class, $integration->environmentComponent());
    }

    /** The content tools leave the same post types alone as before the schema stopped knowing Divi. */
    public function testDiviPostTypesAddedToTheSchemaGiveTheFormerExcludedList(): void
    {
        self::assertSame(
            [
                'attachment', 'nav_menu_item', 'revision', 'wp_block', 'wp_template', 'wp_template_part',
                'wp_navigation', 'wp_global_styles', 'wp_font_family', 'wp_font_face', 'et_pb_layout',
                'et_theme_builder', 'et_template', 'et_header_layout', 'et_body_layout', 'et_footer_layout',
                'et_pb_canvas', '_et_pb_speculation',
            ],
            array_merge(ContentSchema::EXCLUDED, DiviIntegration::internalPostTypes())
        );
    }

    public function testTheSchemaAsksDiviWhetherTheBuilderIsOnForAPostType(): void
    {
        Functions\when('et_builder_enabled_for_post_type')->alias(static fn (string $type): bool => $type === 'page');

        self::assertTrue(DiviIntegration::builderEnabledFor('page'));
        self::assertFalse(DiviIntegration::builderEnabledFor('post'));
    }

    public function testProvidesTheDiviCompatibilityProfile(): void
    {
        $integration = new DiviIntegration(Mockery::mock(ContentSchema::class), FakeChangeLog::forbidden());

        self::assertInstanceOf(ProvidesCompatibility::class, $integration);
        self::assertEquals([DiviProfile::profile()], $integration->compatibilities());
    }

    public function testProvidesTheLibraryGroup(): void
    {
        Functions\when('__')->returnArg();
        $library = (new DiviIntegration(Mockery::mock(ContentSchema::class), FakeChangeLog::forbidden()))->library();

        self::assertSame('divi-library', $library->id());
        self::assertSame('Divi-Bibliothek', $library->label());
        self::assertFalse($library->isAvailable(), 'no Divi classes in unit tests');
        self::assertSame(
            [
                'lit/library-list',
                'lit/library-save',
                'lit/library-insert',
                'lit/library-find-similar',
                'lit/library-make-global',
            ],
            array_map(static fn (Ability $ability): string => $ability->name(), $library->abilities())
        );
        foreach ($library->abilities() as $ability) {
            self::assertFalse($ability->inputSchema()['additionalProperties'], $ability->name());
            self::assertNotNull($ability->outputSchema(), $ability->name());
        }
    }

    public function testProvidesTheThemeBuilderGroup(): void
    {
        Functions\when('__')->returnArg();
        $group = (new DiviIntegration(Mockery::mock(ContentSchema::class), FakeChangeLog::forbidden()))->themeBuilder();

        self::assertSame('divi-theme-builder', $group->id());
        self::assertSame('Divi Theme Builder', $group->label());
        self::assertFalse($group->isAvailable(), 'no Divi classes in unit tests');
        self::assertSame(
            ['lit/tb-list', 'lit/tb-create-template', 'lit/tb-assign', 'lit/tb-activate'],
            array_map(static fn (Ability $ability): string => $ability->name(), $group->abilities())
        );
        foreach ($group->abilities() as $ability) {
            self::assertFalse($ability->inputSchema()['additionalProperties'], $ability->name());
            self::assertNotNull($ability->outputSchema(), $ability->name());
            self::assertFalse($ability->isDirect(), $ability->name());
        }
    }

    /**
     * Review I-2 (ruling Q17 M1): the library usages follow the Theme Builder access – without it (here: no Divi
     * role check in unit tests, so canUse() fails) TB layouts are counted and block, never named.
     * ThemeBuilderAccessTest covers usageState() itself.
     */
    public function testGlobalUsagesFollowTheThemeBuilderAccess(): void
    {
        Functions\when('current_user_can')->justReturn(true);
        Functions\when('get_post')->justReturn(null);
        Functions\when('_get_non_cached_ids')->returnArg(1);
        Functions\when('_prime_post_caches')->justReturn(null);
        Functions\when('wp_cache_delete')->justReturn(true);
        $db = Mockery::mock(\wpdb::class)->makePartial();
        $db->allows('get_results')->andReturnUsing(static fn (string $sql): array => str_contains($sql, 'post_content FROM')
            ? [
                ['ID' => '1053', 'post_content' => '<!-- wp:divi/global-layout {"globalModule":"1058"} /-->'],
                ['ID' => '1061', 'post_content' => '<!-- wp:divi/global-layout {"globalModule":"1058"} /-->'],
            ]
            : [
                ['ID' => '1053', 'post_status' => 'publish', 'post_type' => 'page'],
                ['ID' => '1061', 'post_status' => 'publish', 'post_type' => 'et_header_layout'],
            ]);

        $report = (new DiviIntegration(Mockery::mock(ContentSchema::class), FakeChangeLog::forbidden()))
            ->globalUsages($db)
            ->report(1058);

        self::assertSame([1053], array_column($report->items, 'post_id'));
        self::assertSame([], $report->blocked);
        self::assertSame(1, $report->blockedHidden);
    }

    /** A Tools-tab state bound to $policy, with lit/divi-insert registered (the Divi group available). */
    private static function tools(ExposurePolicy $policy = new ExposurePolicy()): ToolAvailability
    {
        $insert = Mockery::mock(Ability::class);
        $insert->allows('name')->andReturn('lit/divi-insert');
        $insert->allows('isDirect')->andReturn(true);
        $divi = Mockery::mock(Integration::class);
        $divi->allows('id')->andReturn('divi');
        $divi->allows('isAvailable')->andReturn(true);
        $divi->allows('abilities')->andReturn([$insert]);
        $tools = new ToolAvailability();
        $tools->bind(new IntegrationRegistry($divi), $policy);

        return $tools;
    }

    /** Ruling P9 (E9): lit/divi-node-copy follows lit/divi-insert's Tools-tab state. */
    public function testNodeCopyFollowsLitDiviInsert(): void
    {
        $integration = new DiviIntegration(
            Mockery::mock(ContentSchema::class),
            FakeChangeLog::forbidden(),
            self::tools(new ExposurePolicy(['lit/divi-insert' => ExposurePolicy::DISABLED]))
        );
        $copy = null;
        foreach ($integration->abilities() as $ability) {
            if ($ability->name() === 'lit/divi-node-copy') {
                $copy = $ability;
            }
        }

        self::assertNotNull($copy);
        self::assertToolError($copy->permission(['post_id' => 7, 'source_post_id' => 8]), 'unsupported');
    }

    /** Security M2: content-create's divi input follows lit/divi-insert, asked when content-create asks. */
    public function testTheShortFormFollowsLitDiviInsert(): void
    {
        $schema = Mockery::mock(ContentSchema::class);
        $open = new DiviIntegration($schema, FakeChangeLog::forbidden(), self::tools());
        $closed = new DiviIntegration(
            $schema,
            FakeChangeLog::forbidden(),
            self::tools(new ExposurePolicy(['lit/divi-insert' => ExposurePolicy::DISABLED]))
        );

        self::assertTrue($open->contentComposer()->writable());
        self::assertFalse($closed->contentComposer()->writable());
        self::assertTrue((new DiviIntegration($schema, FakeChangeLog::forbidden()))->contentComposer()->writable());
    }

    public function testGivesContentCreateTheDiviShortForm(): void
    {
        $integration = new DiviIntegration(Mockery::mock(ContentSchema::class), FakeChangeLog::forbidden());

        $composer = $integration->contentComposer();

        self::assertInstanceOf(DiviContentComposer::class, $composer);
        self::assertFalse($composer->available(), 'no Divi classes in unit tests');
    }

    /** E1/E3: the Divi read tools reach library entries; ruling P9: a hidden library leaves them not found. */
    public function testTheReadToolsReachTheLibraryUnlessItIsHidden(): void
    {
        LibraryFixtures::given([LibraryFixtures::item(1055)]);
        $schema = Mockery::mock(ContentSchema::class);
        $schema->allows('isManaged')->andReturn(false);
        $outline = static fn (DiviIntegration $divi): mixed => $divi->abilities()[0]->permission(['post_id' => 1055]);

        // No Divi in unit tests: DiviRoles allows nothing, so the entry is not found either way (ruling P12);
        // the wiring shows in which gate the integration asks: an unbound ToolAvailability throws when asked.
        $visible = new DiviIntegration($schema, FakeChangeLog::forbidden(), self::tools());
        self::assertToolError($outline($visible), 'not_found');
        self::assertToolError($outline(new DiviIntegration($schema, FakeChangeLog::forbidden())), 'not_found');

        $hidden = new DiviIntegration(
            $schema,
            FakeChangeLog::forbidden(),
            self::tools(new ExposurePolicy(['@group:divi-library' => ExposurePolicy::DISABLED]))
        );
        $refusal = $outline($hidden);
        self::assertInstanceOf(WP_Error::class, $refusal);
        self::assertToolError($refusal, 'not_found');

        $this->expectExceptionMessage('ToolAvailability asked before Plugin bound it.');
        $outline(new DiviIntegration($schema, FakeChangeLog::forbidden(), new ToolAvailability()));
    }

    /**
     * Ruling P13: library IDs follow the integration's library access – hidden with the group disabled
     * and without the library right (no Divi in unit tests: DiviRoles allows nothing). The positive
     * cases, "nur lesen" included, are in LibraryAccessTest (defining et_pb_is_allowed here would leak).
     */
    public function testLibraryIdsFollowTheLibraryAccess(): void
    {
        LibraryFixtures::given([]);
        $schema = Mockery::mock(ContentSchema::class);
        $hidden = new DiviIntegration(
            $schema,
            FakeChangeLog::forbidden(),
            self::tools(new ExposurePolicy(['@group:divi-library' => ExposurePolicy::DISABLED]))
        );

        self::assertFalse($hidden->libraryIdsVisible());
        self::assertFalse((new DiviIntegration($schema, FakeChangeLog::forbidden()))->libraryIdsVisible());
        $this->expectExceptionMessage('ToolAvailability asked before Plugin bound it.');
        (new DiviIntegration($schema, FakeChangeLog::forbidden(), new ToolAvailability()))->libraryIdsVisible();
    }

    /** Bootable: Divi's own hooks – upgrader cache reset, check route, tab "Divi" after the plugin's tabs. */
    public function testBootRegistersDivisOwnHooks(): void
    {
        $upgraded = null;
        $tabs = null;
        Actions\expectAdded('upgrader_process_complete')->once()->whenHappen(
            static function (callable $callback) use (&$upgraded): void {
                $upgraded = $callback;
            }
        );
        Actions\expectAdded('rest_api_init')->once()->with(Mockery::on(
            static fn (array $callback): bool => $callback[0] instanceof DiviCheckRoute
        ));
        Filters\expectAdded(SettingsPage::TABS_FILTER)->once()->whenHappen(
            static function (callable $callback) use (&$tabs): void {
                $tabs = $callback;
            }
        );
        Functions\expect('delete_transient')->once()->with(ReleaseResolver::CACHE)->andReturn(true);
        $base = Mockery::mock(AdminTab::class);

        (new DiviIntegration(Mockery::mock(ContentSchema::class), FakeChangeLog::forbidden()))->boot();
        self::assertIsCallable($upgraded);
        $upgraded();
        self::assertIsCallable($tabs);
        $all = $tabs([$base]);

        self::assertCount(2, $all);
        self::assertSame($base, $all[0]);
        self::assertInstanceOf(DiviTab::class, $all[1]);
    }

    public function testTheFeatureOverviewFindsTheToolsOfAllIntegrations(): void
    {
        $integration = new DiviIntegration(
            Mockery::mock(ContentSchema::class),
            FakeChangeLog::forbidden(),
            allAbilities: static fn (): array => [
                new FeatureFakeTool('lit/divi-insert', true, [DiviFeature::PageWrite]),
                new FeatureFakeTool('lit/library-insert', true, [DiviFeature::PageWrite, DiviFeature::LibraryRead]),
            ]
        );

        self::assertSame(
            ['page-write' => ['lit-divi-insert', 'lit-library-insert'], 'library-read' => ['lit-library-insert']],
            $integration->featureOverview()->toolsByFeature()
        );
    }

    public function testWithoutAnAbilityListTheOverviewKnowsNoTools(): void
    {
        $integration = new DiviIntegration(Mockery::mock(ContentSchema::class), FakeChangeLog::forbidden());

        self::assertSame([], $integration->featureOverview()->toolsByFeature());
    }
}