Check prerequisites in console installer, too

src/Install/Console/InstallCommand.php

@@ -62,11 +62,22 @@ class InstallCommand extends Command
     {
         $this->init();
 
-        $this->info('Installing Flarum...');
+        $prerequisites = $this->getPrerequisites();
+        $prerequisites->check();
+        $errors = $prerequisites->getErrors();
 
-        $this->install();
+        if (empty($errors)) {
+            $this->info('Installing Flarum...');
 
-        $this->info('DONE.');
+            $this->install();
+
+            $this->info('DONE.');
+        } else {
+            $this->output->writeln(
+                '<error>Please fix the following errors before we can continue with the installation.</error>'
+            );
+            $this->showErrors($errors);
+        }
     }
 
     protected function init()
@@ -275,4 +286,23 @@ class InstallCommand extends Command
     {
         return base_path('../config.php');
     }
+
+    /**
+     * @return \Flarum\Install\Prerequisites\Prerequisite
+     */
+    protected function getPrerequisites()
+    {
+        return $this->application->make('Flarum\Install\Prerequisites\Prerequisite');
+    }
+
+    protected function showErrors($errors)
+    {
+        foreach ($errors as $error) {
+            $this->info($error['message']);
+
+            if (isset($error['detail'])) {
+                $this->output->writeln('<comment>' . $error['detail'] . '</comment>');
+            }
+        }
+    }
 }

src/Install/Prerequisites/PhpExtensions.php

@@ -17,7 +17,7 @@ class PhpExtensions extends AbstractPrerequisite
         foreach (['mbstring', 'pdo_mysql', 'openssl', 'json', 'gd', 'dom', 'fileinfo'] as $extension) {
             if (! extension_loaded($extension)) {
                 $this->errors[] = [
-                    'message' => "The <strong>$extension</strong> extension is required.",
+                    'message' => "The $extension extension is required.",
                 ];
             }
         }

src/Install/Prerequisites/PhpVersion.php

@@ -16,7 +16,7 @@ class PhpVersion extends AbstractPrerequisite
     {
         if (version_compare(PHP_VERSION, '5.5.0', '<')) {
             $this->errors[] = [
-                'message' => '<strong>PHP 5.5+</strong> is required.',
+                'message' => 'PHP 5.5+ is required.',
                 'detail' => 'You are running version '.PHP_VERSION.'. Talk to your hosting provider about upgrading to the latest PHP version.'
             ];
         }

src/Install/Prerequisites/WritablePaths.php

@@ -24,8 +24,8 @@ class WritablePaths extends AbstractPrerequisite
         foreach ($paths as $path) {
             if (! is_writable($path)) {
                 $this->errors[] = [
-                    'message' => 'The <strong>'.realpath($path).'</strong> directory is not writable.',
+                    'message' => 'The '.realpath($path).' directory is not writable.',
-                    'detail' => 'Please chmod this directory '.($path !== public_path() ? ' and its contents' : '').' to 0775.'
+                    'detail' => 'Please chmod this directory'.($path !== public_path() ? ' and its contents' : '').' to 0775.'
                 ];
             }
         }