class NewDefaultThemeBlocksTest

class NewDefaultThemeBlocksTest extends KernelTestBase {
    use BlockCreationTrait;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'block',
        'system',
        'user',
    ];
    
    /**
     * The theme installer service.
     *
     * @var \Drupal\Core\Extension\ThemeInstallerInterface
     */
    protected $themeInstaller;
    
    /**
     * The default theme.
     */
    protected $defaultTheme;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installConfig([
            'system',
        ]);
        
        /** @var \Drupal\Core\Extension\ThemeInstallerInterface $themeInstaller */
        $this->themeInstaller = $this->container
            ->get('theme_installer');
        $this->defaultTheme = $this->config('system.theme')
            ->get('default');
    }
    
    /**
     * Check the blocks are correctly copied by block_themes_installed().
     */
    public function testNewDefaultThemeBlocks() : void {
        $default_theme = $this->defaultTheme;
        $theme_installer = $this->themeInstaller;
        $theme_installer->install([
            $default_theme,
        ]);
        // Add two instances of the user login block.
        $this->placeBlock('user_login_block', [
            'id' => $default_theme . '_' . $this->randomMachineName(8),
        ]);
        $this->placeBlock('user_login_block', [
            'id' => $default_theme . '_' . $this->randomMachineName(8),
        ]);
        // Add an instance of a different block.
        $this->placeBlock('system_powered_by_block', [
            'id' => $default_theme . '_' . $this->randomMachineName(8),
        ]);
        // Install a different theme that does not have blocks.
        $new_theme = 'test_theme';
        // The new theme is different from the previous default theme.
        $this->assertNotEquals($new_theme, $default_theme);
        $theme_installer->install([
            $new_theme,
        ]);
        $this->config('system.theme')
            ->set('default', $new_theme)
            ->save();
        $block_storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('block');
        // Ensure that the new default theme has the same blocks as the previous
        // default theme.
        $default_block_names = $block_storage->getQuery()
            ->accessCheck(FALSE)
            ->condition('theme', $default_theme)
            ->execute();
        $new_blocks = $block_storage->getQuery()
            ->accessCheck(FALSE)
            ->condition('theme', $new_theme)
            ->execute();
        $this->assertSameSize($default_block_names, $new_blocks);
        foreach ($default_block_names as $default_block_name) {
            // Remove the matching block from the list of blocks in the new theme.
            // For example, if the old theme has block.block.stark_admin,
            // unset block.block.olivero_admin.
            unset($new_blocks[str_replace($default_theme . '_', $new_theme . '_', $default_block_name)]);
        }
        $this->assertEmpty($new_blocks);
        // Install a hidden base theme and ensure blocks are not copied.
        $base_theme = 'test_basetheme';
        $theme_installer->install([
            $base_theme,
        ]);
        $new_blocks = $block_storage->getQuery()
            ->accessCheck(FALSE)
            ->condition('theme', $base_theme)
            ->execute();
        $this->assertEmpty($new_blocks);
    }
    
    /**
     * Checks that a theme block is still created when same ID exists.
     */
    public function testBlockCollision() : void {
        $default_theme = $this->defaultTheme;
        $theme_installer = $this->themeInstaller;
        $theme_installer->install([
            $default_theme,
        ]);
        // Add two instances of the user login block with machine
        // names that will collide.
        $this->placeBlock('user_login_block', [
            'id' => 'user_login_block',
        ]);
        $this->placeBlock('user_login_block', [
            'id' => $default_theme . '_user_login_block',
        ]);
        // Add an instance of a different block.
        $this->placeBlock('system_powered_by_block', [
            'id' => $default_theme . '_' . strtolower($this->randomMachineName(8)),
        ]);
        // Install a different theme that does not have blocks.
        $new_theme = 'test_theme';
        // The new theme is different from the previous default theme.
        $this->assertNotEquals($new_theme, $default_theme);
        $theme_installer->install([
            $new_theme,
        ]);
        $this->config('system.theme')
            ->set('default', $new_theme)
            ->save();
        $block_storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('block');
        // Ensure that the new default theme has the same blocks as the previous
        // default theme.
        $default_block_names = $block_storage->getQuery()
            ->accessCheck(FALSE)
            ->condition('theme', $default_theme)
            ->execute();
        $new_blocks = $block_storage->getQuery()
            ->accessCheck(FALSE)
            ->condition('theme', $new_theme)
            ->execute();
        $this->assertSameSize($default_block_names, $new_blocks);
        foreach ($default_block_names as $default_block_name) {
            // Remove the matching block from the list of blocks in the new theme.
            // For example, if the old theme has block.block.stark_admin,
            // unset block.block.olivero_admin.
            unset($new_blocks[str_replace($default_theme . '_', $new_theme . '_', $default_block_name)]);
        }
        // The test_theme_user_login_block machine name is already in use, so therefore
        // \Drupal\block\BlockRepository::getUniqueMachineName
        // appends a counter.
        unset($new_blocks[$new_theme . '_user_login_block_2']);
        $this->assertEmpty($new_blocks);
        // Install a hidden base theme and ensure blocks are not copied.
        $base_theme = 'test_basetheme';
        $theme_installer->install([
            $base_theme,
        ]);
        $new_blocks = $block_storage->getQuery()
            ->accessCheck(FALSE)
            ->condition('theme', $base_theme)
            ->execute();
        // Installing a hidden base theme does not copy the blocks from the default
        // theme.
        $this->assertEmpty($new_blocks);
    }

}