docs(plugins): add experimental plugins section + plugins:create command to create plugin via CLI

.prettierrc.json

@@ -2,7 +2,7 @@
   "trailingComma": "es5",
   "overrides": [
     {
-      "files": "*.md",
+      "files": ["*.md", "*.mdx"],
       "options": {
         "proseWrap": "always"
       }

docs/astro.config.mjs

@@ -183,6 +183,35 @@ export default defineConfig({
             },
           ],
         },
+        {
+          label: "Plugins",
+          badge: {
+            text: "Experimental",
+          },
+          items: [
+            {
+              label: "Introduction",
+              link: "/plugins/",
+            },
+            {
+              label: "Creating a plugin",
+              link: "/plugins/create",
+            },
+            {
+              label: "Reference",
+              items: [
+                {
+                  label: "manifest.json",
+                  link: "/plugins/manifest",
+                },
+                {
+                  label: "hooks",
+                  link: "/plugins/hooks",
+                },
+              ],
+            },
+          ],
+        },
       ],
       editLink: {
         baseUrl:

docs/src/content/docs/en/plugins/create.mdx

@@ -0,0 +1,56 @@
+---
+title: Creating a Plugin
+---
+
+import { FileTree, Steps } from "@astrojs/starlight/components";
+
+In order to get started, you first need to
+[setup your Castopod dev environment](https://code.castopod.org/adaures/castopod/-/blob/develop/CONTRIBUTING-DEV.md).
+
+## Using the create command
+
+To quickly get you started, you can create a plugin using the following CLI
+command:
+
+```sh
+php spark plugins:create
+```
+
+👉 Follow the CLI instructions: you will be prompted for metadata and hooks
+definitions to generate the [plugin folder](./#plugin-folder-structure) for you.
+
+## Manual setup
+
+<Steps>
+1. create a plugin folder inside a vendor directory
+
+    <FileTree>
+    - plugins
+        - acme
+            - **hello-world/**
+        - …
+
+    </FileTree>
+
+2. add a manifest.json file
+
+   <FileTree>
+
+   - hello-world
+     - **manifest.json**
+
+   </FileTree>
+
+   See the [manifest reference](./manifest).
+
+3. add the Plugin.php class
+
+   <FileTree>
+
+   - hello-world
+     - manifest.json
+     - **Plugin.php**
+
+   </FileTree>
+
+</Steps>

docs/src/content/docs/en/plugins/helpers.mdx

@@ -0,0 +1,3 @@
+---
+title: BasePlugin
+---

docs/src/content/docs/en/plugins/hooks.mdx

@@ -0,0 +1,61 @@
+---
+title: Hooks reference
+---
+
+Hooks are methods that live in the Plugin class, they are executed in parts of
+the Castopod codebase.
+
+## List
+
+| Hooks            | Executes in |
+| ---------------- | ----------- |
+| rssBeforeChannel | RSS Feed    |
+| rssAfterChannel  | RSS Feed    |
+| rssBeforeItem    | RSS Feed    |
+| rssAfterItem     | RSS Feed    |
+| siteHead         | Website     |
+
+### rssBeforeChannel
+
+```php
+public function rssBeforeChannel(Podcast $podcast): void
+{
+    // …
+}
+```
+
+### rssAfterChannel
+
+```php
+public function rssAfterChannel(Podcast $podcast, SimpleRSSElement $rss): void
+{
+    // …
+}
+```
+
+### rssBeforeItem
+
+```php
+public function rssBeforeItem(Episode $episode): void
+{
+    // …
+}
+```
+
+### rssAfterItem
+
+```php
+public function rssAfterItem(Epsiode $episode, SimpleRSSElement $rss): void
+{
+    // …
+}
+```
+
+### siteHead
+
+```php
+public function siteHead(): void
+{
+    // …
+}
+```

docs/src/content/docs/en/plugins/index.mdx

@@ -0,0 +1,133 @@
+---
+title: Castopod Plugins
+---
+
+import { FileTree, Aside } from "@astrojs/starlight/components";
+
+Plugins are ways to extend Castopod's core features.
+
+## Plugin folder structure
+
+<FileTree>
+
+- hello-world
+  - i18n
+    - en.json
+    - fr.json
+    - …
+  - icon.svg
+  - [manifest.json](./manifest) // required
+  - [Plugin.php](#plugin-class) // required
+  - README.md
+
+</FileTree>
+
+Plugins reside in the `plugins` folder under a **vendor** folder, ie. the
+organisation or person who authored the plugin.
+
+<FileTree>
+
+- **plugins**
+  - acme
+    - hello-world/
+    - …
+  - atlantis/
+
+</FileTree>
+
+### manifest.json (required)
+
+The plugin manifest is a JSON file containing your plugin's metadata and
+permissions.
+
+This file will determine whether a plugin is valid or not. The minimal required
+data being:
+
+```json
+{
+  "name": "acme/hello-world",
+  "version": "1.0.0"
+}
+```
+
+Checkout the [manifest.json reference](./manifest).
+
+<h3 id="plugin-class">Plugin class (required)</h3>
+
+This is where your plugin's logic will live.
+
+The Plugin class must extend Castopod's BasePlugin class and implement one or
+multiple [Hooks](./hooks) (methods).
+
+```php
+// Plugin.php
+<?php
+
+declare(strict_types=1);
+
+use Modules\Plugins\Core\BasePlugin;
+
+class AcmeHelloWorldPlugin extends BasePlugin
+{
+    // …
+}
+```
+
+<Aside type="note">
+
+The Plugin class name is determined by its `vendor/name` pair.  
+For example, a plugin living under the `acme/hello-world` folder must be named
+`AcmeHelloWorldPlugin`:
+
+- the first letter of every word is capitalized (ie. PascalCase)
+- any special caracter is removed
+- the `Plugin` suffix is added
+
+</Aside>
+
+### README.md
+
+The `README.md` file is loaded into the plugin's view page for the user to
+read.  
+It should be used for any additional information to help guide the user in using
+the plugin.
+
+### icon.svg
+
+The plugin icon is displayed next to its title, it is an SVG file intended to
+give a graphical representation of the plugin.
+
+The icon should be squared, and be legible in a 64px by 64px circle.
+
+### Internationalization (i18n)
+
+Translation strings live under the `i18n` folder. Translation files are JSON
+files named as locale keys:
+
+<FileTree>
+
+- **i18n**
+  - en.json // default locale
+  - fr.json
+  - de.json
+  - …
+
+</FileTree>
+
+Supported locales are:
+`br`,`ca`,`de`,`en`,`es`,`fr`,`nn-no`,`pl`,`pt-br`,`sr-latn`,`zh-hans`.
+
+The translation strings allow you to translate the title, description and
+settings keys.
+
+```json
+{
+  "title": "Hello, World!",
+  "description": "A Castopod plugin to greet the world!",
+  "settings": {
+    "general": {},
+    "podcast": {},
+    "episode": {}
+  }
+}
+```

docs/src/content/docs/en/plugins/manifest.mdx

@@ -0,0 +1,59 @@
+---
+title: manifest.json reference
+---
+
+This page details the attributes of a Castopod Plugin's manifest, which must be
+a JSON file.
+
+### name (required)
+
+The plugin name, including 'vendor-name/' prefix.
+
+### version (required)
+
+The plugin's semantic version (eg. 1.0.0) - see https://semver.org/
+
+### description
+
+The plugin's description. This helps people discover your plugin as it's listed
+in repositories
+
+### authors
+
+Array one or more persons having authored the plugin. A person is an object with
+a required "name" field and optional "email" and "url" fields:
+
+```json
+{
+  "name": "Jean D'eau",
+  "email": "jean.deau@example.com",
+  "url": "https://example.com/"
+}
+```
+
+Or you can shorten the object into a single string:
+
+```json
+"Jean D'eau <jean.deau@example.com> (https://example.com/)"
+```
+
+### homepage
+
+The URL to the project homepage.
+
+### license
+
+You should specify a license for your plugin so that people know how they are
+permitted to use it, and any restrictions you're placing on it.
+
+### private
+
+### keywords
+
+### hooks
+
+### settings
+
+### files
+
+### repository

modules/Plugins/Commands/CreatePlugin.php

@@ -0,0 +1,159 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Modules\Plugins\Commands;
+
+use CodeIgniter\CLI\BaseCommand;
+use CodeIgniter\CLI\CLI;
+use Exception;
+use Modules\Plugins\Config\Plugins as PluginsConfig;
+use Modules\Plugins\Core\Plugins;
+use Modules\Plugins\Manifest\Manifest;
+use Override;
+
+class CreatePlugin extends BaseCommand
+{
+    protected const HOOKS_IMPORTS = [
+        'rssBeforeChannel' => ['use App\Entities\Podcast;'],
+        'rssAfterChannel'  => ['use App\Entities\Podcast;', 'use App\Libraries\SimpleRSSElement;'],
+        'rssBeforeItem'    => ['use App\Entities\Episode;'],
+        'rssAfterItem'     => ['use App\Entities\Episode;', 'use App\Libraries\SimpleRSSElement;'],
+        'siteHead'         => [],
+    ];
+
+    protected const HOOKS_METHODS = [
+        'rssBeforeChannel' => '    public function rssBeforeChannel(Podcast $podcast): void
+    {
+        // YOUR CODE HERE
+    }',
+        'rssAfterChannel' => '    public function rssAfterChannel(Podcast $podcast, SimpleRSSElement $channel): void
+    {
+        // YOUR CODE HERE
+    }',
+        'rssBeforeItem' => '    public function rssBeforeItem(Episode $episode): void
+    {
+        // YOUR CODE HERE
+    }',
+        'rssAfterItem' => '    public function rssAfterItem(Episode $episode, SimpleRSSElement $item): void
+    {
+        // YOUR CODE HERE
+    }',
+        'siteHead' => '    public function siteHead(): void
+    {
+        // YOUR CODE HERE
+    }',
+    ];
+
+    /**
+     * @var string
+     */
+    protected $group = 'Plugins';
+
+    /**
+     * @var string
+     */
+    protected $name = 'plugins:create';
+
+    /**
+     * @var string
+     */
+    protected $description = 'Generates a new plugin folder based on a template.';
+
+    /**
+     * Actually execute a command.
+     *
+     * @param list<string> $params
+     */
+    #[Override]
+    public function run(array $params): void
+    {
+        $pluginName = CLI::prompt(
+            'Plugin name (<vendor>/<name>)',
+            'acme/hello-world',
+            Manifest::VALIDATION_RULES['name']
+        );
+        CLI::newLine();
+        $description = CLI::prompt('Description', '', Manifest::VALIDATION_RULES['description']);
+        CLI::newLine();
+        $license = CLI::prompt('License', 'UNLICENSED', Manifest::VALIDATION_RULES['license']);
+        CLI::newLine();
+        $hooks = CLI::promptByMultipleKeys('Which hooks do you want to implement?', Plugins::HOOKS);
+
+        $nameParts = explode('/', $pluginName);
+        $vendor = $nameParts[0];
+        $name = $nameParts[1];
+
+        /** @var PluginsConfig $pluginsConfig */
+        $pluginsConfig = config('Plugins');
+
+        // 1. create plugin directory if not existent
+        $pluginDirectory = $pluginsConfig->folder . $vendor . DIRECTORY_SEPARATOR . $name;
+        if (! file_exists($pluginDirectory)) {
+            mkdir($pluginDirectory, 0755, true);
+        }
+
+        // 2. get contents of templates
+        $manifestTemplate = file_get_contents(__DIR__ . '/plugin-template/manifest.tpl.json');
+
+        if (! $manifestTemplate) {
+            throw new Exception('Failed to get manifest template.');
+        }
+
+        $pluginClassTemplate = file_get_contents(__DIR__ . '/plugin-template/Plugin.tpl.php');
+
+        if (! $pluginClassTemplate) {
+            throw new Exception('Failed to get Plugin class template.');
+        }
+
+        // 3. edit templates' contents
+        $manifestContents = str_replace('"name": ""', '"name": "' . $pluginName . '"', $manifestTemplate);
+        $manifestContents = str_replace(
+            '"description": ""',
+            '"description": "' . $description . '"',
+            $manifestContents
+        );
+        $manifestContents = str_replace('"license": ""', '"license": "' . $license . '"', $manifestContents);
+        $manifestContents = str_replace(
+            '"hooks": []',
+            '"hooks": ["' . implode('", "', $hooks) . '"]',
+            $manifestContents
+        );
+
+        $pluginClassName = str_replace(
+            ' ',
+            '',
+            ucwords(str_replace(['-', '_', '.'], ' ', $vendor . ' ' . $name)) . 'Plugin'
+        );
+        $pluginClassContents = str_replace('class Plugin', 'class ' . $pluginClassName, $pluginClassTemplate);
+
+        $allImports = [];
+        $allMethods = [];
+        foreach ($hooks as $hook) {
+            $allImports = [...$allImports, ...self::HOOKS_IMPORTS[$hook]];
+            $allMethods = [...$allMethods, self::HOOKS_METHODS[$hook]];
+        }
+
+        $imports = implode(PHP_EOL, array_unique($allImports));
+        $methods = implode(PHP_EOL . PHP_EOL, $allMethods);
+        $pluginClassContents = str_replace('// IMPORTS_HERE', $imports, $pluginClassContents);
+        $pluginClassContents = str_replace('    // HOOKS_HERE', $methods, $pluginClassContents);
+
+        $manifest = $pluginDirectory . '/manifest.json';
+        $pluginClass = $pluginDirectory . '/Plugin.php';
+
+        if (! file_put_contents($manifest, $manifestContents)) {
+            throw new Exception('Failed to create manifest.json file.');
+        }
+
+        if (! file_put_contents($pluginClass, $pluginClassContents)) {
+            throw new Exception('Failed to create Plugin class file.');
+        }
+
+        CLI::newLine(1);
+        CLI::write(
+            sprintf('Plugin %s created in %s', CLI::color($pluginName, 'white'), CLI::color($pluginDirectory, 'white')),
+            'green'
+        );
+    }
+}

modules/Plugins/Commands/UninstallPlugin.php

@@ -30,7 +30,7 @@ class UninstallPlugin extends BaseCommand
      *
      * @var string
      */
-    protected $description = '';
+    protected $description = 'Removes a plugin from the plugins directory.';
 
     /**
      * The Command's Usage

modules/Plugins/Commands/plugin-template/Plugin.tpl.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+// IMPORTS_HERE
+use Modules\Plugins\Core\BasePlugin;
+
+class Plugin extends BasePlugin
+{
+    // HOOKS_HERE
+}

modules/Plugins/Commands/plugin-template/manifest.tpl.json

@@ -0,0 +1,7 @@
+{
+  "name": "",
+  "version": "0.1.0",
+  "description": "",
+  "license": "",
+  "hooks": []
+}

modules/Plugins/Controllers/PluginController.php

@@ -206,7 +206,7 @@ class PluginController extends BaseController
 
         return redirect()->back()
             ->with('message', lang('Plugins.messages.saveSettingsSuccess', [
-                'pluginName' => $plugin->getName(),
+                'pluginTitle' => $plugin->getTitle(),
             ]));
     }
 

modules/Plugins/Core/BasePlugin.php

@@ -233,17 +233,17 @@ abstract class BasePlugin implements PluginInterface
         return $this->package;
     }
 
-    final public function getName(): string
+    final public function getTitle(): string
     {
-        $key = sprintf('Plugin.%s.name', $this->key);
-        /** @var string $name */
-        $name = lang($key);
+        $key = sprintf('Plugin.%s.title', $this->key);
+        /** @var string $title */
+        $title = lang($key);
 
-        if ($name === $key) {
+        if ($title === $key) {
             return $this->manifest->name;
         }
 
-        return $name;
+        return $title;
     }
 
     final public function getDescription(): ?string

modules/Plugins/Language/en/Plugins.php

@@ -19,9 +19,9 @@ return [
     'declaredHooks' => 'Declared hooks',
     'settings' => 'Settings',
     'settingsTitle' => '{type, select,
-        podcast {{pluginName} podcast settings}
-        episode {{pluginName} episode settings}
-        other {{pluginName} general settings}
+        podcast {{pluginTitle} podcast settings}
+        episode {{pluginTitle} episode settings}
+        other {{pluginTitle} general settings}
     }',
     'view' => 'View',
     'activate' => 'Activate',
@@ -39,7 +39,7 @@ return [
     'noDescription' => 'No description',
     'noReadme' => 'No README file found.',
     'messages' => [
-        'saveSettingsSuccess' => '{pluginName} settings were successfully saved!',
+        'saveSettingsSuccess' => '{pluginTitle} settings were successfully saved!',
     ],
     'errors' => [
         'manifestError' => 'Plugin manifest has errors',

modules/Plugins/Manifest/Manifest.php

@@ -25,7 +25,7 @@ class Manifest extends ManifestObject
     /**
      * @var array<string,string>
      */
-    protected const VALIDATION_RULES = [
+    public const VALIDATION_RULES = [
         'name'        => 'required|max_length[128]|regex_match[/^[a-z0-9]([_.-]?[a-z0-9]+)*\/[a-z0-9]([_.-]?[a-z0-9]+)*$/]',
         'version'     => 'required|regex_match[/^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$/]',
         'description' => 'permit_empty|max_length[256]',

themes/cp_admin/_sidebar.php

@@ -88,7 +88,7 @@ $navigation = [
 foreach (plugins()->getActivePlugins() as $plugin) {
     $route = route_to('plugins-view', $plugin->getVendor(), $plugin->getPackage());
     $navigation['plugins']['items'][] = $route;
-    $navigation['plugins']['items-labels'][$route] = $plugin->getName();
+    $navigation['plugins']['items-labels'][$route] = $plugin->getTitle();
     $navigation['plugins']['items-permissions'][$route] = 'plugins.manage';
 }
 

themes/cp_admin/episode/_sidebar.php

@@ -35,7 +35,7 @@ $episodeNavigation = [
 foreach (plugins()->getPluginsWithEpisodeSettings() as $plugin) {
     $route = route_to('plugins-settings-episode', $plugin->getVendor(), $plugin->getPackage(), $podcast->id, $episode->id);
     $episodeNavigation['plugins']['items'][] = $route;
-    $episodeNavigation['plugins']['items-labels'][$route] = $plugin->getName();
+    $episodeNavigation['plugins']['items-labels'][$route] = $plugin->getTitle();
     $episodeNavigation['plugins']['items-permissions'][$route] = 'episodes.edit';
 }
 

themes/cp_admin/plugins/_plugin.php

@@ -18,7 +18,7 @@ use Modules\Plugins\Core\PluginStatus;
     </div>
     <img class="rounded-full min-w-16 max-w-16 aspect-square" src="<?= $plugin->getIconSrc() ?>">
     <div class="flex flex-col items-start mt-2 mb-6">
-        <h2 class="flex items-center text-xl font-bold font-display gap-x-2" title="<?= $plugin->getName() ?>"><a class="line-clamp-1" href="<?= route_to('plugins-view', $plugin->getVendor(), $plugin->getPackage()) ?>" class="hover:underline decoration-accent"><?= $plugin->getName() ?></a></h2>
+        <h2 class="flex items-center text-xl font-bold font-display gap-x-2" title="<?= $plugin->getTitle() ?>"><a class="line-clamp-1" href="<?= route_to('plugins-view', $plugin->getVendor(), $plugin->getPackage()) ?>" class="hover:underline decoration-accent"><?= $plugin->getTitle() ?></a></h2>
         <p class="inline-flex font-mono text-xs">
             <span class="inline-flex tracking-wide bg-gray-100">
                 <a href="<?= route_to('plugins-vendor', $plugin->getVendor()) ?>" class="underline underline-offset-2 decoration-2 decoration-dotted hover:decoration-solid decoration-accent"><?= $plugin->getVendor() ?></a>

themes/cp_admin/plugins/settings.php

@@ -2,15 +2,15 @@
 
 <?= $this->section('title') ?>
 <?= lang('Plugins.settingsTitle', [
-    'pluginName' => $plugin->getName(),
-    'type'       => $type,
+    'pluginTitle' => $plugin->getTitle(),
+    'type'        => $type,
 ]) ?>
 <?= $this->endSection() ?>
 
 <?= $this->section('pageTitle') ?>
 <?= lang('Plugins.settingsTitle', [
-    'pluginName' => $plugin->getName(),
-    'type'       => $type,
+    'pluginTitle' => $plugin->getTitle(),
+    'type'        => $type,
 ]) ?>
 <?= $this->endSection() ?>
 

themes/cp_admin/plugins/view.php

@@ -5,11 +5,11 @@
 <?= $this->extend('_layout') ?>
 
 <?= $this->section('title') ?>
-<?= $plugin->getName() ?>
+<?= $plugin->getTitle() ?>
 <?= $this->endSection() ?>
 
 <?= $this->section('pageTitle') ?>
-<?= $plugin->getName() ?>
+<?= $plugin->getTitle() ?>
 <?= $this->endSection() ?>
 
 <?= $this->section('headerLeft') ?>

themes/cp_admin/podcast/_sidebar.php

@@ -92,7 +92,7 @@ $podcastNavigation = [
 foreach (plugins()->getPluginsWithPodcastSettings() as $plugin) {
     $route = route_to('plugins-settings-podcast', $plugin->getVendor(), $plugin->getPackage(), $podcast->id);
     $podcastNavigation['plugins']['items'][] = $route;
-    $podcastNavigation['plugins']['items-labels'][$route] = $plugin->getName();
+    $podcastNavigation['plugins']['items-labels'][$route] = $plugin->getTitle();
     $podcastNavigation['plugins']['items-permissions'][$route] = 'edit';
 }