Add abandoned note and upgrade to sylius theme bundle

README.md

@@ -1,6 +1,9 @@
 Theme Bundle
 ============
 
+> This project is not longer maintained and recommends to use [SyliusThemeBundle](https://github.com/Sylius/SyliusThemeBundle) instead for support of Symfony 5 and Twig 3.
+> For migration have a look at [Migrate to SyliusThemeBundle](#migrate-to-syliusthemebundle).
+
 This bundle provides you the possibility to add themes to each bundle. In your
 bundle directory it will look under `Resources/themes/<themename>` or fall back
 to the normal Resources/views if no matching file was found.
@@ -304,6 +307,148 @@ liip_theme:
     device_detection: my_devcice_detection
 ````
 
+## Migrate to SyliusThemeBundle
+
+This will show you the stepts to switch from the [LiipThemeBundle](https://github.com/liip/LiipThemeBundle) to [SyliusThemeBundle](https://github.com/Sylius/SyliusThemeBundle).
+
+#### Remove the old theme bundle and install the SyliusThemeBundle:
+
+```bash
+# Remove old theme-bundle
+composer remove liip/theme-bundle --no-update
+
+# Install new theme-bundle
+composer require sylius/theme-bundle:"^2.0"
+```
+
+#### Remove old configuration
+
+The old `liip_theme.yaml` configuration needs to be removed:
+
+```diff
+-liip_theme:
+-    themes: ['awesome']
+-    active_theme: 'awesome'
+```
+
+In the next step you see how you configure the **awesome** theme using the SyliusThemeBundle.
+
+#### Configure the SyliusThemeBundle:
+
+In order to use the bundle you have to add the following default configuration:
+
+```yaml
+# ./config/packages/sylius_theme.yaml
+
+sylius_theme:
+    sources:
+        filesystem: ~
+```
+
+By default, the bundle seeks for the themes in the `%kernel.project_dir%/themes` directory and looks for a configuration
+file named `composer.json`. This can be changed via the yaml configuration:
+
+```yaml
+sylius_theme:
+    sources:
+        filesystem:
+            filename: theme.json
+```
+
+#### Convert Theme Configuration
+
+In the SyliusThemeBundle every theme must have its own configuration file in form of a `theme.json`.
+Add a `theme.json` file and add the following minimal configuration:
+
+```diff
+{
+    "name": "app/awesome"
+}
+```
+
+Go to the [Theme Configuration Reference](https://github.com/Sylius/SyliusThemeBundle/blob/master/docs/theme_configuration_reference.md)
+for the detailed documentation about the configuration options.
+
+Most likely you have to change the theme name. It is important, that the `name` matches the naming convention of composer (`vendor/name`).
+Furthermore the `theme.json` has to be moved into the directory for this specific theme. 
+
+For example: `%kernel.project_dir%/themes/awesome/theme.json`
+
+#### Update project structure
+
+Your templates have to be placed in a `templates` directory next to the `theme.json` file.
+
+For example: `%kernel.project_dir%/themes/<theme-name>/templates`
+
+This results in the following project structure:
+
+```
+ProjectName
+├── composer.json
+├── assets
+├── bin
+├── config
+├── templates
+├── themes
+│   ├── awesome
+│   │   ├── templates
+│   │   │   └── base.html.twig
+│   │   └── theme.json
+│   └── <theme-name-2>
+│       ├── templates
+│       │   └── base.html.twig
+│       └── theme.json
+├── ...
+└── ...
+```
+
+As you can see in the project structure, each theme must have their own `theme.json` configuration file next to the
+templates directory.
+
+#### Create ThemeRequestListener
+
+You need to create a ThemeRequestListener to set the theme based on the current `$request` data:
+
+```php
+use Sylius\Bundle\ThemeBundle\Context\SettableThemeContext;
+use Sylius\Bundle\ThemeBundle\Repository\ThemeRepositoryInterface;
+use Symfony\Component\HttpKernel\Event\GetResponseEvent;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+
+final class ThemeRequestListener
+{
+    /** @var ThemeRepositoryInterface */
+    private $themeRepository;
+
+    /** @var SettableThemeContext */
+    private $themeContext;
+
+    public function __construct(ThemeRepositoryInterface $themeRepository, SettableThemeContext $themeContext)
+    {
+        $this->themeRepository = $themeRepository;
+        $this->themeContext = $themeContext;
+    }
+
+    public function onKernelRequest(GetResponseEvent $event): void
+    {
+        if (HttpKernelInterface::MASTER_REQUEST !== $event->getRequestType()) {
+            // don't do anything if it's not the master request
+            return;
+        }
+
+        $themeName = 'app/awesome';
+
+        // here you can set the $themeName based on $event->getRequest() object
+
+        $this->themeContext->setTheme(
+            $this->themeRepository->findOneByName($themeName)
+        );
+    }
+}
+```
+
+Have a look also at the [SyliusThemeBundle Documentation](https://github.com/Sylius/SyliusThemeBundle/tree/master/docs/index.md).
+
 ## Contribution
 
 Active contribution and patches are very welcome. To keep things in shape we

composer.json

@@ -34,6 +34,7 @@
     "conflict": {
         "sebastian/comparator": "1.2.3"
     },
+    "abandoned": "sylius/theme-bundle",
     "extra": {
         "branch-alias": {
             "dev-master": "1.4-dev"