(apache): fix mod_rewrite rule to match Vite build's hashed filenames

Sets far future expire headers to the Vite build assets.

Other css/js can be versioned by using similar pattern:

    /path/to/file.12345678.(css|js)

NOTES

The old cache.php used to remove the hash, so that filenames on the
server don't need to change. That doesn't work with Vite's default
output, but then again we rarely need to change the filenames anyway
-- so instead we'll update the filenames for the non-Vite build files
to match the rewrite rule.

src/apps/koohii/modules/study/templates/_SideColumn.php

@@ -1,8 +1,11 @@
 <?php
   use_helper('CJK', 'Form');
 
-  // use versioning file pattern here (cf .htaccess rule) for max-age
-  use_javascript('/revtk/study/keywords-'.CJ_MODE.'-'.$sf_user->getUserSequence().'_v2019.js', 'first', ['defer' => true]);
+  // file hash matches the ones output by Vite build (cf .htaccess rule)
+  $FILEHASH = '20211019';
+  $rtkIndex = $sf_user->getUserSequence(); // 0 = OLD, 1 = NEW
+  $keywordsFile = "/revtk/study/keywords-rtk-{$rtkIndex}.{$FILEHASH}.js";
+  use_javascript($keywordsFile, 'first', ['defer' => true]);
 
   //$restudyCount = ReviewsPeer::getRestudyKanjiCount($sf_user->getUserId());
 

src/lib/core/coreWebResponse.php

@@ -38,7 +38,7 @@ public function addViteEntries()
     // FIXME : obsolete YUI2 dependency to be phased out
     if (!$isLandingPage)
     {
-      $this->addJavascript('/build/yui2/yui2-bundle.min.js', self::FIRST, ['defer' => true]);
+      $this->addJavascript('/build/yui2/yui2-bundle.20211019.js', self::FIRST, ['defer' => true]);
     }
 
     if (KK_ENV_DEV && self::USE_DEV_SERVER && false === $viteClientLoaded)

src/web/.htaccess_default

@@ -2,7 +2,7 @@
   RewriteEngine On
 
   # php handler for versioning of front end assets
-  RewriteRule ^(.*)_v[0-9.]+(css|js)$   /version/cache.php?env=dev&app=revtk&path=$1.$2 [L]
+  RewriteRule ^(.*)\.[a-z0-9]+\.(css|js)$   /version/cache.php?file=$0 [L]
 
   # we skip all files with .something
   RewriteCond %{REQUEST_URI} \..+$

src/web/version/cache.php

@@ -1,11 +1,14 @@
 <?php
 /**
  * Outputs resource with gzip compression and far future expire headers.
- *
+ * 
  * Query parameters (set by htaccess redirection):
  * 
- *   path   Absolute path from the web root to resource file (starts with leading slash)
- *
+ *   file   Absolute path from the web root to resource file
+ * 
+ * CHANGELOG
+ * 
+ *   Oct 2021 ... updated to match Vite build hashes
  *   
  * @author  Fabrice Denis
  */
@@ -23,7 +26,7 @@ function __construct()
 
   function execute()
   {
-    $filepath = $this->getParameter('path');
+    $filepath = $this->getParameter('file');
 
     // on web server the path doesn't come with a leading slash, go figure
     if (strpos($filepath, DIRECTORY_SEPARATOR) !== 0) {