Add command to list isolated sites

cli/Valet/Nginx.php

@@ -177,4 +177,17 @@ public function uninstall()
         $this->brew->uninstallFormula('nginx nginx-full');
         $this->cli->quietly('rm -rf '.BREW_PREFIX.'/etc/nginx '.BREW_PREFIX.'/var/log/nginx');
     }
+
+    /**
+     * Return a list of all sites with explicit Nginx configurations
+     *
+     * @return \Illuminate\Support\Collection
+     */
+    public function configuredSites()
+    {
+       return collect($this->files->scandir(VALET_HOME_PATH.'/Nginx'))
+            ->reject(function ($file) {
+                return starts_with($file, '.');
+            });
+    }
 }

cli/Valet/PhpFpm.php

@@ -243,6 +243,22 @@ public function unIsolateDirectory($directory)
         info(sprintf('The site [%s] is now using the default PHP version.', $site));
     }
 
+    /**
+     * List all directories with PHP isolation configured.
+     *
+     * @return \Illuminate\Support\Collection
+     */
+    public function isolatedDirectories()
+    {
+        $configuredSites = $this->nginx->configuredSites();
+
+        return $configuredSites->filter(function ($item) {
+            return str_contains($this->files->get(VALET_HOME_PATH.'/Nginx/'.$item), 'Valet isolated PHP version');
+        })->map(function ($item) {
+            return ['url' => $item];
+        });
+    }
+
     /**
      * Use a specific version of PHP globally.
      *
@@ -366,11 +382,7 @@ public function utilizedPhpVersions()
             return self::fpmSockName($this->normalizePhpVersion($version));
         })->unique();
 
-        return collect($this->files->scandir(VALET_HOME_PATH.'/Nginx'))
-            ->reject(function ($file) {
-                return starts_with($file, '.');
-            })
-            ->map(function ($file) use ($fpmSockFiles) {
+        return $this->nginx->configuredSites()->map(function ($file) use ($fpmSockFiles) {
                 $content = $this->files->get(VALET_HOME_PATH.'/Nginx/'.$file);
 
                 // Get the normalized PHP version for this config file, if it's defined

cli/valet.php

@@ -528,7 +528,16 @@
      */
     $app->command('unisolate', function () {
         PhpFpm::unIsolateDirectory(basename(getcwd()));
-    })->descriptions('Stop customizing the version of PHP used by valet to serve the current working directory');
+    })->descriptions('Stop customizing the version of PHP used by Valet to serve the current working directory');
+
+    /**
+     * List isolated sites
+     */
+    $app->command('isolated', function () {
+        $sites = PhpFpm::isolatedDirectories();
+
+        table(['Path'], $sites->all());
+    })->descriptions('List all sites using isolated versions of PHP.');
 
     /**
      * Tail log file.

tests/NginxTest.php

@@ -86,4 +86,26 @@ public function test_install_nginx_directories_rewrites_secure_nginx_files()
 
         $site->shouldHaveReceived('resecureForNewConfiguration', [$data, $data]);
     }
+
+    public function test_it_gets_configured_sites()
+    {
+        $files = Mockery::mock(Filesystem::class);
+
+        $files->shouldReceive('scandir')
+            ->once()
+            ->with(VALET_HOME_PATH . '/Nginx')
+            ->andReturn(['.gitkeep', 'isolated-site-71.test', 'isolated-site-72.test', 'isolated-site-73.test']);
+
+        swap(Filesystem::class, $files);
+        swap(Configuration::class, $config = Mockery::spy(Configuration::class, ['read' => ['tld' => 'test', 'loopback' => VALET_LOOPBACK]]));
+        swap(Site::class, Mockery::mock(Site::class));
+
+        $nginx = resolve(Nginx::class);
+        $output = $nginx->configuredSites();
+
+        $this->assertEquals(
+            ['isolated-site-71.test', 'isolated-site-72.test', 'isolated-site-73.test'],
+            $output->values()->all()
+        );
+    }
 }

tests/PhpFpmTest.php

@@ -64,6 +64,7 @@ public function test_utilized_php_versions()
     {
         $fileSystemMock = Mockery::mock(Filesystem::class);
         $brewMock = Mockery::mock(Brew::class);
+        $nginxMock = Mockery::mock(Nginx::class);
 
         $phpFpmMock = Mockery::mock(PhpFpm::class, [
             $brewMock,
@@ -71,7 +72,7 @@ public function test_utilized_php_versions()
             $fileSystemMock,
             resolve(Configuration::class),
             Mockery::mock(Site::class),
-            Mockery::mock(Nginx::class),
+            $nginxMock,
         ])->makePartial();
 
         swap(PhpFpm::class, $phpFpmMock);
@@ -85,12 +86,9 @@ public function test_utilized_php_versions()
 
         $brewMock->shouldReceive('getLinkedPhpFormula')->andReturn('php@7.3');
 
-        $fileSystemMock->shouldReceive('scandir')
+        $nginxMock->shouldReceive('configuredSites')
             ->once()
-            ->with(VALET_HOME_PATH.'/Nginx')
-            ->andReturn(['.gitkeep', 'isolated-site-71.test', 'isolated-site-72.test', 'isolated-site-73.test']);
-
-        $fileSystemMock->shouldNotReceive('get')->with(VALET_HOME_PATH.'/Nginx/.gitkeep');
+            ->andReturn(collect(['isolated-site-71.test', 'isolated-site-72.test', 'isolated-site-73.test']));
 
         $sites = [
             [
@@ -114,6 +112,11 @@ public function test_utilized_php_versions()
         $this->assertEquals(['php@7.1', 'php@7.2', 'php@7.3'], resolve(PhpFpm::class)->utilizedPhpVersions());
     }
 
+    public function test_it_lists_isolated_directories()
+    {
+        $this->markTestIncomplete('@todo');
+    }
+
     public function test_stop_unused_php_versions()
     {
         $brewMock = Mockery::mock(Brew::class);