support javascript module imports (#18)

* support javascript module imports

* remove unused method

* fix issue with replacing entire levelUp path

Author: TomK

src/Resources/AbstractDispatchableResource.php

@@ -80,24 +80,26 @@ protected function _dispatch() { }
    */
   protected function _makeFullPath($relativePath, $workingDirectory)
   {
-    if($relativePath == '.')
+    // levelUps
+    $newParts = [];
+    $parts = explode('/', Path::url($workingDirectory, $relativePath));
+    while($part = array_shift($parts))
     {
-      return $workingDirectory;
-    }
-    $levelUps = substr_count($relativePath, '../');
-    if($levelUps > 0)
-    {
-      $relativePath = str_replace('../', '', $relativePath);
-      $workingDirectoryParts = explode('/', $workingDirectory);
-      $moves = count($workingDirectoryParts) - $levelUps;
-      if($moves < 0)
+      if($part !== '..' && $parts && $parts[0] === '..')
+      {
+        array_shift($parts);
+      }
+      else
       {
-        //Relative to this directory is not allowed
-        return null;
+        $newParts[] = $part;
       }
-      return Path::custom('/', array_merge(array_slice($workingDirectoryParts, 0, $moves), [$relativePath]));
     }
-    return $workingDirectory[0] !== '.' ? Path::url($workingDirectory, $relativePath) : $relativePath;
+    $relativePath = Path::url(...$newParts);
+
+    // currentDir
+    $relativePath = preg_replace('~(?<=\/|^).\/~', '', $relativePath);
+
+    return $relativePath;
   }
 
   /**
@@ -108,13 +110,15 @@ protected function _makeFullPath($relativePath, $workingDirectory)
    */
   protected function _getDispatchUrl($path): string
   {
-    list($newPath, $append) = Strings::explode('?', $path, [$path, null], 2);
-
-    if(!$this->_manager->isExternalUrl($newPath))
+    if($this->_manager->isExternalUrl($path))
     {
-      $newPath = Path::system($this->_makeFullPath(dirname($newPath), dirname($this->_path)), basename($newPath));
+      return $path;
     }
 
+    list($newPath, $append) = Strings::explode('?', $path, [$path, null], 2);
+
+    $newPath = $this->_makeFullPath($newPath, dirname($this->_path));
+
     $url = $this->_manager->getResourceUri($newPath);
     if(empty($url))
     {

src/Resources/JavascriptResource.php

@@ -2,11 +2,13 @@
 namespace Packaged\Dispatch\Resources;
 
 use JShrink\Minifier;
+use Packaged\Helpers\Strings;
 
 class JavascriptResource extends AbstractDispatchableResource
 {
   protected $_options = [
-    'minify' => 'true',
+    'dispatch' => true,
+    'minify'   => true,
   ];
 
   public function getExtension()
@@ -19,6 +21,42 @@ public function getContentType()
     return "text/javascript";
   }
 
+  protected function _dispatch()
+  {
+    $this->_content = preg_replace_callback(
+      '~(import\s+.+?\s+from\s+)(["\']?)(.+?)\2(.*?)~',
+      [$this, "_dispatchImportUrls"],
+      $this->_content
+    );
+  }
+
+  /**
+   * Dispatch a nested URL
+   *
+   * @param $uri
+   *
+   * @return string
+   * @throws \Exception
+   */
+  protected function _dispatchImportUrls($uri)
+  {
+    return $uri[1] . Strings::wrap($this->_getDispatchUrl($uri[3]), $uri[2], true) . $uri[4];
+  }
+
+  protected function _makeFullPath($relativePath, $workingDirectory)
+  {
+    $path = parent::_makeFullPath($relativePath, $workingDirectory);
+    if(!file_exists($this->_manager->getFilePath($path)))
+    {
+      $ext = pathinfo($this->_path, PATHINFO_EXTENSION);
+      if(file_exists($this->_manager->getFilePath($path . '.' . $ext)))
+      {
+        return $path . '.' . $ext;
+      }
+    }
+    return $path;
+  }
+
   protected function _minify()
   {
     try

tests/Resources/AbstractDispatchableResourceTest.php

@@ -46,6 +46,9 @@ public function testJsContent()
     $resource->setFilePath($manager->getFilePath('js/url.min.js'));
     $resource->setContent(file_get_contents(Path::system($root, Dispatch::RESOURCES_DIR, 'js', 'url.min.js')));
     $content = $resource->getContent();
+    $this->assertContains('import test from \'./test\';', $content);
+    $this->assertContains('import {default as alert} from \'r/ef6402a7/js/alert.js\';', $content);
+    $this->assertContains('import misc from \'r/d023f9c3/js/misc.js\';', $content);
     $this->assertContains('"url(" + test(p) + ")"', $content);
   }
 }

tests/_root/resources/js/url.min.js

@@ -1,3 +1,7 @@
+import test from './test';
+import {default as alert} from './alert';
+import misc from './misc.js';
+
 function test(p) {return p + '.png';}
 
 var p = 'test';