Add git checkout and composer install commands.

src/Drupal/Modules/site_hosting/src/Plugins/Command/ComposerInstall.php → src/Drupal/Modules/site_hosting/src/Plugin/Command/ComposerInstall.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace Drupal\commands\Plugin\Command;
+namespace Drupal\site_hosting\Plugin\Command;
 
 use Drupal\commands\CommandPluginBase;
 use Drupal\Core\Form\FormStateInterface;

src/Drupal/Modules/site_hosting/src/Plugin/Command/GitCheckout.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace Drupal\site_hosting\Plugin\Command;
+
+use Drupal\commands\CommandPluginBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\user\Entity\User;
+
+/**
+ * Clones and checks out code.
+ *
+ * @Command(
+ *   id = "git_checkout",
+ *   label = @Translation("Git Checkout"),
+ *   description = @Translation("Clone a git repository and checkout the desired git reference."),
+ *   command = {
+ *     "git clone [git_remote] [git_root]",
+ *     "cd [git_root]",
+ *     "git fetch",
+ *     "git checkout [git_reference]",
+ *   }
+ * )
+ */
+class GitCheckout extends CommandPluginBase {
+
+//  public function command($params = []) {
+//    $command = <<<CMD
+//git clone $git_remote $git_root
+//cd $git_root
+//git fetch
+//git checkout $git_reference
+//CMD;
+//    return $command;
+//
+//  }
+
+  /**
+   * Show a form on the "Run command" form.
+   * @return void
+   */
+  public function form($form, FormStateInterface $form_state) {
+    $form['parameters']['git_remote'] = [
+      '#type' => 'textfield',
+      '#title' => t('Git Remote'),
+      '#description'=> t('The remote URL of the repository to clone.'),
+    ];
+    $form['parameters']['git_root'] = [
+      '#type' => 'textfield',
+      '#title' => t('Git Root'),
+      '#description'=> t('The absolute path to the root of the repository.'),
+    ];
+    $form['parameters']['git_reference'] = [
+      '#type' => 'textfield',
+      '#title' => t('Git Reference'),
+      '#description'=> t('The git reference to checkout.'),
+    ];
+
+    // @TODO: Reset working_directory to detected composer root.
+    return $form;
+  }
+}