refactor: Divi pages adapter replaces DiviFlags

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/Integrations/Divi/Pages/DiviContentComposer.php

@@ -20,7 +20,7 @@ defined('ABSPATH') || exit;
 /**
  * Divi short form for lit/content-create (spec §6.2): the sections become a Divi 5 layout in
  * exactly one divi/placeholder – inserted by TreeEditor like the first section of an empty page
- * (ruling S9) – stored through DiviSaver's kses window, with the builder flags (DiviFlags, S11).
+ * (ruling S9) – stored through DiviSaver's kses window, with the builder flags (DiviPages, S11).
  *
  * Allow map (ruling S22) for an entry that does not exist yet: check() runs before the insert
  * with the composition bound to post ID 0 – Divi's own registry for "no entry" (get_options(0)

src/Integrations/Divi/Pages/DiviFlags.php

@@ -1,40 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace LIT\MCP\Integrations\Divi\Pages;
-
-use RuntimeException;
-
-defined('ABSPATH') || exit;
-
-/**
- * Marks an entry as a Divi 5 builder layout, like the Visual Builder's own save does
- * (Divi 5.2.1 SyncToServerController.php:382-387: _et_pb_use_divi_5 = "on", legacy
- * _et_pb_use_builder = "on", and _et_pb_show_page_creation = "off" so the builder does not show
- * its page creation flow on the first open). Ruling S11: update_post_meta() returns false for
- * an unchanged value too, so success is checked by reading the flags back. Used by DiviSaver
- * (inside FollowUp) and the Divi content creation.
- */
-final class DiviFlags
-{
-    public const FLAGS = [
-        '_et_pb_use_divi_5' => 'on',
-        '_et_pb_use_builder' => 'on',
-        '_et_pb_show_page_creation' => 'off',
-    ];
-
-    /** @throws RuntimeException When a flag does not read back as set. */
-    public static function set(int $postId): void
-    {
-        foreach (self::FLAGS as $key => $value) {
-            update_post_meta($postId, $key, $value);
-        }
-
-        foreach (self::FLAGS as $key => $value) {
-            if (get_post_meta($postId, $key, true) !== $value) {
-                throw new RuntimeException(sprintf('Divi flag %s of post %d is not "%s".', $key, $postId, $value));
-            }
-        }
-    }
-}

src/Integrations/Divi/Pages/DiviPage.php

@@ -74,6 +74,6 @@ final class DiviPage
     /** The entry opened in the Divi Visual Builder – the edit_url of every Divi write (review I-1). */
     public static function builderUrl(WP_Post|int $post): string
     {
-        return (string) add_query_arg('et_fb', '1', (string) get_permalink($post));
+        return DiviPages::builderUrl($post);
     }
 }

src/Integrations/Divi/Pages/DiviPages.php

@@ -0,0 +1,98 @@
+<?php
+
+declare(strict_types=1);
+
+namespace LIT\MCP\Integrations\Divi\Pages;
+
+use LIT\MCP\Integrations\Divi\Release\Call;
+use LIT\MCP\Integrations\Divi\Release\DiviAdapter;
+use LIT\MCP\Integrations\Divi\Release\Manifest;
+use LIT\MCP\Integrations\Divi\Release\Mirror;
+use RuntimeException;
+use WP_Post;
+
+defined('ABSPATH') || exit;
+
+/**
+ * Adapter "Seiten" (spec §3): the Divi 5 builder flags of an entry as the Visual Builder's own save sets them
+ * (mirror vb-sync-flags: _et_pb_use_divi_5 = "on", legacy _et_pb_use_builder = "on", _et_pb_show_page_creation =
+ * "off" so the builder skips its page creation flow), whether an entry uses the builder, its builder URL, the
+ * static CSS of one page and Divi's list of linkable post types. Ruling S11: update_post_meta() returns false for an
+ * unchanged value too, so setFlags() checks by reading the flags back. Used by DiviSaver, the Divi content creation,
+ * WpLinkTargets and PostPresenter.
+ */
+final class DiviPages implements DiviAdapter
+{
+    public const FLAGS = [
+        '_et_pb_use_divi_5' => 'on',
+        '_et_pb_use_builder' => 'on',
+        '_et_pb_show_page_creation' => 'off',
+    ];
+
+    public static function manifest(): Manifest
+    {
+        return new Manifest(
+            Manifest::PAGES,
+            calls: [
+                new Call('ET_Core_PageResource::remove_static_resources', 3),
+                new Call('et_builder_get_public_post_types', 0),
+            ],
+            keys: ['_et_pb_use_divi_5', '_et_pb_use_builder', '_et_pb_show_page_creation', 'et_fb'],
+            mirrors: [
+                new Mirror(
+                    'vb-sync-flags',
+                    'includes/builder-5/server/VisualBuilder/REST/SyncToServer/SyncToServerController.php',
+                    'update',
+                    'SyncToServerController',
+                    'Builder-Kennzeichen einer Seite (_et_pb_use_divi_5, _et_pb_use_builder, _et_pb_show_page_creation)'
+                ),
+            ]
+        );
+    }
+
+    /** @throws RuntimeException When a flag does not read back as set. */
+    public static function setFlags(int $postId): void
+    {
+        foreach (self::FLAGS as $key => $value) {
+            update_post_meta($postId, $key, $value);
+        }
+
+        foreach (self::FLAGS as $key => $value) {
+            if (get_post_meta($postId, $key, true) !== $value) {
+                throw new RuntimeException(sprintf('Divi flag %s of post %d is not "%s".', $key, $postId, $value));
+            }
+        }
+    }
+
+    /** Whether Divi's builder flag marks $postId as a builder layout. */
+    public static function usesBuilder(int $postId): bool
+    {
+        return get_post_meta($postId, '_et_pb_use_builder', true) === 'on';
+    }
+
+    /** The entry opened in the Divi Visual Builder: its permalink with et_fb=1. */
+    public static function builderUrl(WP_Post|int $post): string
+    {
+        return (string) add_query_arg('et_fb', '1', (string) get_permalink($post));
+    }
+
+    /** Removes the static CSS files Divi generated for $postId (spec §5.6 step 5). */
+    public static function clearPageCss(int $postId): void
+    {
+        if (class_exists('ET_Core_PageResource')) {
+            \ET_Core_PageResource::remove_static_resources($postId, 'all', true);
+        }
+    }
+
+    /** Whether Divi offers a post_link_url_<type> option for $postType. Fail closed: without Divi's list, none. */
+    public static function isLinkable(string $postType): bool
+    {
+        if (! function_exists('et_builder_get_public_post_types')) {
+            return false;
+        }
+
+        $types = et_builder_get_public_post_types();
+
+        return is_array($types) && array_key_exists($postType, $types);
+    }
+}

src/Integrations/Divi/Pages/DiviSaver.php

@@ -20,7 +20,7 @@ defined('ABSPATH') || exit;
 
 /**
  * Save pipeline of spec §5.6, steps 3–5: restore point and wp_update_post() with wp_slash() (the
- * status stays), Divi 5 flags (DiviFlags), Divi's static CSS cache. A failure after saving is
+ * status stays), Divi 5 flags and the page's static CSS (DiviPages). A failure after saving is
  * only a warning (FollowUp); a filter that changed the stored content is reported as well.
  *
  * kses (spec D7): for users without unfiltered_html WordPress' kses would run
@@ -45,7 +45,7 @@ defined('ABSPATH') || exit;
  * for its single wp_update_post().
  *
  * Divi's own save filters are NOT kses and are never removed (ruling S7, defense in depth):
- * Security::initialize() (Divi 5.2.1 Security.php:74-81) registers on wp_insert_post_data
+ * Security::initialize() (Divi's Security.php) registers on wp_insert_post_data
  * AttributeSecurity (priority 5, always), HtmlSecurity (priority 6, by capability) and
  * DynamicContentFixes (priority 10: strips enable_html for users without unfiltered_html). The first
  * two re-serialize the whole page when it holds custom attributes or htmlBefore/htmlAfter/elementType, so on such
@@ -98,7 +98,7 @@ class DiviSaver
         $warnings = [];
         if ($scope->setsFlags()) {
             FollowUp::run(
-                static fn () => DiviFlags::set($postId),
+                static fn () => DiviPages::setFlags($postId),
                 'divi builder flags',
                 'Die Divi-Kennzeichen der Seite konnten nicht gesetzt werden; der Inhalt ist gespeichert – die Seite '
                     . 'einmal im Divi-Builder öffnen und speichern.',
@@ -107,9 +107,7 @@ class DiviSaver
         }
         FollowUp::run(
             static function () use ($postId, $scope): void {
-                if (class_exists('ET_Core_PageResource')) {
-                    \ET_Core_PageResource::remove_static_resources($postId, 'all', true);
-                }
+                DiviPages::clearPageCss($postId);
                 // A global library entry is part of every page that shows it (spec §5.6 step 5).
                 if ($scope->clearsSiteCss()) {
                     DiviThemeBuilder::clearSiteCaches();
@@ -149,7 +147,7 @@ class DiviSaver
         }
 
         if ($scope->setsFlags()) {
-            DiviFlags::set($postId);
+            DiviPages::setFlags($postId);
         }
 
         $stored = get_post($postId);

src/Integrations/Divi/Pages/WpLinkTargets.php

@@ -6,6 +6,7 @@ namespace LIT\MCP\Integrations\Divi\Pages;
 
 use Closure;
 use LIT\MCP\Integrations\Divi\Compose\LinkTargets;
+use LIT\MCP\Integrations\Divi\Library\DiviLibraryStore;
 use WP_Post;
 
 defined('ABSPATH') || exit;
@@ -22,18 +23,19 @@ final class WpLinkTargets implements LinkTargets
     private const DEAD = ['trash', 'auto-draft', 'inherit'];
 
     /** Never link targets, whatever Divi lists: attachments and the Divi Library (ruling Q14). */
-    private const NEVER = ['attachment', 'et_pb_layout'];
+    private const NEVER = ['attachment', DiviLibraryStore::POST_TYPE];
 
     /** @var Closure(string): bool */
     private Closure $linkable;
 
     /**
      * @param (Closure(string): bool)|null $linkable Whether Divi offers post_link_url_<type> (tests);
-     *        null = Divi's et_builder_get_public_post_types(), the list its link option uses.
+     *        null = DiviPages::isLinkable() (Divi's et_builder_get_public_post_types(), the list its
+     *        link option uses).
      */
     public function __construct(?Closure $linkable = null)
     {
-        $this->linkable = $linkable ?? self::diviLinkable(...);
+        $this->linkable = $linkable ?? DiviPages::isLinkable(...);
     }
 
     public function postTypeOf(int $id): ?string
@@ -50,16 +52,4 @@ final class WpLinkTargets implements LinkTargets
 
         return current_user_can('read_post', $id) ? $type : null;
     }
-
-    /** Fail closed: without Divi's list no type has a link option. */
-    private static function diviLinkable(string $type): bool
-    {
-        if (! function_exists('et_builder_get_public_post_types')) {
-            return false;
-        }
-
-        $types = et_builder_get_public_post_types();
-
-        return is_array($types) && array_key_exists($type, $types);
-    }
 }

src/Integrations/Divi/Release/DiviAdapters.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace LIT\MCP\Integrations\Divi\Release;
 
+use LIT\MCP\Integrations\Divi\Pages\DiviPages;
 use LIT\MCP\Integrations\Divi\Pages\DynamicContentMap;
 use LIT\MCP\Integrations\Divi\Schema\DiviModules;
 
@@ -14,6 +15,7 @@ final class DiviAdapters
 {
     /** @var list<class-string<DiviAdapter>> */
     public const CLASSES = [
+        DiviPages::class,
         DiviModules::class,
         DynamicContentMap::class,
     ];

src/Integrations/WordPress/Content/PostPresenter.php

@@ -6,6 +6,7 @@ namespace LIT\MCP\Integrations\WordPress\Content;
 
 use LIT\MCP\Abilities\JsonMap;
 use LIT\MCP\Abilities\Rev;
+use LIT\MCP\Integrations\Divi\Pages\DiviPages;
 use LIT\MCP\Integrations\Divi\Schema\DiviModules;
 use LIT\MCP\Integrations\WordPress\Schema\ContentSchema;
 use LIT\MCP\Integrations\WordPress\Schema\FieldDefinition;
@@ -95,7 +96,7 @@ class PostPresenter
 
     public static function usesDivi(WP_Post $post): bool
     {
-        return get_post_meta((int) $post->ID, '_et_pb_use_builder', true) === 'on'
+        return DiviPages::usesBuilder((int) $post->ID)
             || str_contains((string) $post->post_content, '<!-- wp:divi/');
     }
 

tests/Unit/Integrations/Divi/Library/GlobalEditsTest.php

@@ -133,7 +133,7 @@ final class GlobalEditsTest extends TestCase
         );
     }
 
-    public function testPlainLibraryItemIsSavedWithoutConfirmAndWithoutDiviFlags(): void
+    public function testPlainLibraryItemIsSavedWithoutConfirmAndWithoutPageFlags(): void
     {
         LibraryFixtures::given([LibraryFixtures::item(1057)]);
 
@@ -563,7 +563,7 @@ final class GlobalEditsTest extends TestCase
     }
 
     /** Ruling P1: lit-divi-replace-text saves library entries through DiviWriter::commit(). */
-    public function testReplaceTextSavesAPlainLibraryItemWithoutDiviFlags(): void
+    public function testReplaceTextSavesAPlainLibraryItemWithoutPageFlags(): void
     {
         LibraryFixtures::given([LibraryFixtures::item(1057)]);
 

tests/Unit/Integrations/Divi/Pages/DiviFlagsTest.php

@@ -1,58 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace LIT\MCP\Tests\Unit\Integrations\Divi\Pages;
-
-use Brain\Monkey\Functions;
-use LIT\MCP\Integrations\Divi\Pages\DiviFlags;
-use LIT\MCP\Tests\Unit\TestCase;
-use RuntimeException;
-
-final class DiviFlagsTest extends TestCase
-{
-    public function testSetsBothFlagsAndAcceptsAnUnchangedValue(): void
-    {
-        $written = [];
-        // update_post_meta() is false when the value is already "on" – no failure (ruling S11).
-        Functions\when('update_post_meta')->alias(static function (int $id, string $key, string $value) use (&$written): bool {
-            $written[] = "$id:$key=$value";
-
-            return false;
-        });
-        Functions\when('get_post_meta')->alias(
-            static fn (int $id, string $key): string => $key === '_et_pb_show_page_creation' ? 'off' : 'on'
-        );
-
-        DiviFlags::set(7);
-
-        // Like Divi's own save (SyncToServerController.php:382-387), incl. the page creation flow flag.
-        self::assertSame(
-            ['7:_et_pb_use_divi_5=on', '7:_et_pb_use_builder=on', '7:_et_pb_show_page_creation=off'],
-            $written
-        );
-    }
-
-    public function testThrowsWhenAFlagDoesNotReadBack(): void
-    {
-        Functions\when('update_post_meta')->justReturn(true);
-        Functions\when('get_post_meta')->alias(
-            static fn (int $id, string $key): string => $key === '_et_pb_use_builder' ? 'off' : 'on'
-        );
-
-        $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('_et_pb_use_builder');
-        DiviFlags::set(7);
-    }
-
-    public function testThrowsWhenThePageCreationFlagDoesNotReadBack(): void
-    {
-        Functions\when('update_post_meta')->justReturn(true);
-        Functions\when('get_post_meta')->justReturn('on');
-
-        $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('_et_pb_show_page_creation');
-        DiviFlags::set(7);
-    }
-}
-

tests/Unit/Integrations/Divi/Pages/DiviPagesTest.php

@@ -0,0 +1,114 @@
+<?php
+
+declare(strict_types=1);
+
+namespace LIT\MCP\Tests\Unit\Integrations\Divi\Pages;
+
+use Brain\Monkey\Functions;
+use LIT\MCP\Integrations\Divi\Pages\DiviPages;
+use LIT\MCP\Integrations\Divi\Release\DiviAdapters;
+use LIT\MCP\Integrations\Divi\Release\Manifest;
+use LIT\MCP\Tests\Unit\TestCase;
+use RuntimeException;
+use WP_Post;
+
+final class DiviPagesTest extends TestCase
+{
+    public function testSetsBothFlagsAndAcceptsAnUnchangedValue(): void
+    {
+        $written = [];
+        // update_post_meta() is false when the value is already "on" – no failure (ruling S11).
+        Functions\when('update_post_meta')->alias(static function (int $id, string $key, string $value) use (&$written): bool {
+            $written[] = "$id:$key=$value";
+
+            return false;
+        });
+        Functions\when('get_post_meta')->alias(
+            static fn (int $id, string $key): string => $key === '_et_pb_show_page_creation' ? 'off' : 'on'
+        );
+
+        DiviPages::setFlags(7);
+
+        // Like Divi's own save (SyncToServerController::update, Mirror vb-sync-flags), incl. the page creation flag.
+        self::assertSame(
+            ['7:_et_pb_use_divi_5=on', '7:_et_pb_use_builder=on', '7:_et_pb_show_page_creation=off'],
+            $written
+        );
+    }
+
+    public function testThrowsWhenAFlagDoesNotReadBack(): void
+    {
+        Functions\when('update_post_meta')->justReturn(true);
+        Functions\when('get_post_meta')->alias(
+            static fn (int $id, string $key): string => $key === '_et_pb_use_builder' ? 'off' : 'on'
+        );
+
+        $this->expectException(RuntimeException::class);
+        $this->expectExceptionMessage('_et_pb_use_builder');
+        DiviPages::setFlags(7);
+    }
+
+    public function testThrowsWhenThePageCreationFlagDoesNotReadBack(): void
+    {
+        Functions\when('update_post_meta')->justReturn(true);
+        Functions\when('get_post_meta')->justReturn('on');
+
+        $this->expectException(RuntimeException::class);
+        $this->expectExceptionMessage('_et_pb_show_page_creation');
+        DiviPages::setFlags(7);
+    }
+
+    public function testIsTheRegisteredPagesAdapterWithTheFlagMirror(): void
+    {
+        $manifest = DiviPages::manifest();
+
+        self::assertContains(DiviPages::class, DiviAdapters::CLASSES);
+        self::assertSame(Manifest::PAGES, $manifest->area);
+        self::assertSame(['vb-sync-flags'], array_map(static fn ($mirror): string => $mirror->id, $manifest->mirrors));
+        self::assertSame('SyncToServerController::update()', $manifest->mirrors[0]->label());
+    }
+
+    public function testUsesBuilderReadsDivisFlag(): void
+    {
+        Functions\when('get_post_meta')->alias(
+            static fn (int $id, string $key): string => $id === 7 && $key === '_et_pb_use_builder' ? 'on' : ''
+        );
+
+        self::assertTrue(DiviPages::usesBuilder(7));
+        self::assertFalse(DiviPages::usesBuilder(8));
+    }
+
+    public function testBuilderUrlOpensTheVisualBuilder(): void
+    {
+        Functions\when('get_permalink')->justReturn('https://k.de/start/');
+        Functions\when('add_query_arg')->alias(
+            static fn (string $key, string $value, string $url): string => $url . '?' . $key . '=' . $value
+        );
+
+        self::assertSame('https://k.de/start/?et_fb=1', DiviPages::builderUrl(new WP_Post(['ID' => 7])));
+    }
+
+    public function testClearPageCssRemovesThePagesStaticFiles(): void
+    {
+        \ET_Core_PageResource::$removed = [];
+
+        DiviPages::clearPageCss(7);
+
+        self::assertSame([[7, 'all', true]], \ET_Core_PageResource::$removed);
+    }
+
+    /**
+     * Own process (Brain Monkey's FunctionStub eval's a real global function the first time a name is
+     * stubbed – function_exists() would report it as permanently defined for the rest of the run
+     * otherwise, breaking WpLinkTargetsTest's "without Divi" case).
+     *
+     * @runInSeparateProcess
+     */
+    public function testIsLinkableFollowsDivisPublicPostTypes(): void
+    {
+        Functions\when('et_builder_get_public_post_types')->justReturn(['page' => 'Seiten', 'post' => 'Beiträge']);
+
+        self::assertTrue(DiviPages::isLinkable('page'));
+        self::assertFalse(DiviPages::isLinkable('product'));
+    }
+}

tests/Unit/Integrations/Divi/Pages/DiviSaverTest.php

@@ -62,7 +62,7 @@ final class DiviSaverTest extends TestCase
         parent::tearDown();
     }
 
-    public function testSavesWithoutKsesForFilteredUsersAndSetsDiviFlags(): void
+    public function testSavesWithoutKsesForFilteredUsersAndSetsThePageFlags(): void
     {
         Functions\when('current_user_can')->justReturn(false);
         Functions\when('has_filter')->justReturn(10);
@@ -269,7 +269,7 @@ final class DiviSaverTest extends TestCase
         (new DiviSaver())->saveNew(42, 'NEU');
     }
 
-    public function testLibraryItemsGetNoDiviFlagsAndGlobalOnesClearEveryPage(): void
+    public function testLibraryItemsGetNoPageFlagsAndGlobalOnesClearEveryPage(): void
     {
         \ET_Core_PageResource::$removed = [];
         Functions\when('current_user_can')->justReturn(true);

tests/Unit/Integrations/Divi/Release/DiviBoundaryTest.php

@@ -30,13 +30,8 @@ final class DiviBoundaryTest extends TestCase
         'Integrations/Divi/Library/DiviRoles.php',
         'Integrations/Divi/Library/LibraryItemSpec.php',
         'Integrations/Divi/Library/NewLibraryEntry.php',
-        'Integrations/Divi/Pages/DiviFlags.php',
-        'Integrations/Divi/Pages/DiviPage.php',
-        'Integrations/Divi/Pages/DiviSaver.php',
-        'Integrations/Divi/Pages/WpLinkTargets.php',
         'Integrations/Divi/ThemeBuilder/DiviThemeBuilder.php',
         'Integrations/Media/MediaUsageFinder.php',
-        'Integrations/WordPress/Content/PostPresenter.php',
     ];
 
     public function testOnlyAdaptersTouchDivi(): void