Improvement: Cache rclone version command result

src/Rclone.php

@@ -32,6 +32,7 @@ class Rclone
   private static array  $flags       = [];  // Global rclone flags to be applied to all commands.
   private static array  $envs        = [];  // Custom environment variables (usually rclone parameters).
   private static string $input       = '';  // Input string to be passed to rclone commands (e.g., for rcat).
+  private static array  $version_cache = []; // Cache for rclone version.
   private object        $progress;          // Object to store rclone progress information.
   private static array  $reset       = [    // Default values for resetting static properties.
                                             'timeout' => 120,
@@ -732,16 +733,26 @@ private function directTwinRun(string $command, ?string $left_path = NULL, ?stri
    */
   public function version(bool $numeric = FALSE) : string|float
   {
+    $cacheKey = $numeric ? 'numeric' : 'string';
+    if (isset(self::$version_cache[$cacheKey])) {
+      return self::$version_cache[$cacheKey];
+    }
+
     $cmd_output = $this->simpleRun('version'); // Executes 'rclone version'.
 
     // Parses version string like "rclone v1.2.3"
     preg_match_all('/rclone\sv(.+)/m', $cmd_output, $version_matches, PREG_SET_ORDER, 0);
 
+    $result = $numeric ? 0.0 : '';
+
     if (isset($version_matches[0][1])) {
       $version_string = $version_matches[0][1];
-      return $numeric ? (float) $version_string : $version_string;
+      $result = $numeric ? (float) $version_string : $version_string;
     }
-    return $numeric ? 0.0 : ''; // Should not happen with a valid rclone installation.
+
+    self::$version_cache[$cacheKey] = $result;
+
+    return $result;
   }
 
   /**
@@ -761,6 +772,9 @@ public static function getBIN() : string
    */
   public static function setBIN(string $BIN) : void
   {
+    if (isset(self::$BIN) && self::$BIN !== $BIN) {
+      self::$version_cache = [];
+    }
     self::$BIN = $BIN;
   }
 

tests/Unit/VersionTest.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Verseles\Flyclone\Test\Unit;
+
+use PHPUnit\Framework\TestCase;
+use Verseles\Flyclone\Providers\LocalProvider;
+use Verseles\Flyclone\Rclone;
+
+class VersionTest extends TestCase
+{
+    public function testVersion()
+    {
+        $binPath = realpath(__DIR__ . '/../../bin/rclone');
+        if ($binPath) {
+             Rclone::setBIN($binPath);
+        } else {
+            try {
+                $bin = Rclone::guessBIN();
+                if (!file_exists($bin) || !is_executable($bin)) {
+                    $this->markTestSkipped("Rclone binary guessed at $bin but not found or not executable.");
+                }
+            } catch (\Exception $e) {
+                $this->markTestSkipped('Rclone binary not found: ' . $e->getMessage());
+            }
+        }
+
+        $local = new LocalProvider('local');
+        $rclone = new Rclone($local);
+
+        try {
+            $v1 = $rclone->version();
+            $this->assertIsString($v1);
+            $this->assertMatchesRegularExpression('/^[\d.]+/', $v1);
+
+            $v2 = $rclone->version(true);
+            $this->assertIsFloat($v2);
+            $this->assertGreaterThan(0, $v2);
+        } catch (\Exception $e) {
+            $this->markTestSkipped('Failed to run rclone version: ' . $e->getMessage());
+        }
+    }
+}