Fix download from a fallback url

Author: Sven Jungnickel

composer.json

@@ -65,7 +65,7 @@
       },
       "phpmd": {
         "url": "http://static.phpmd.org/php/latest/phpmd.phar",
-        "fallback-url": "https://tooly.me-dresden.de/phpmd/2.6.0/phpmd.phar",
+        "fallback-url": "https://github.com/jakzal/phpmd/releases/download/2.6.0-jakzal-2/phpmd.phar",
         "force-replace": true
       },
       "security-checker": {

src/Script/Decision/IsAccessibleDecision.php

@@ -17,7 +17,7 @@ class IsAccessibleDecision extends AbstractDecision
     public function canProceed(Tool $tool)
     {
         if (false === $this->helper->getDownloader()->isAccessible($tool->getUrl())) {
-            return false;
+            return $this->fallbackUrlIsAccessible($tool);
         }
 
         if (empty($tool->getSignUrl())) {
@@ -38,4 +38,16 @@ public function getReason()
     {
         return '<error>At least one given URL are not accessible!</error>';
     }
+
+    /**
+     * @param Tool $tool
+     *
+     * @return bool
+     */
+    private function fallbackUrlIsAccessible(Tool $tool)
+    {
+        $fallbackUrl = $tool->getFallbackUrl();
+
+        return false === empty($fallbackUrl) && true === $this->helper->getDownloader()->isAccessible($fallbackUrl);
+    }
 }

src/Script/Decision/UseFallbackURLDecision.php

@@ -9,7 +9,6 @@
 use Tooly\Script\Decision\IsAccessibleDecision;
 use Tooly\Script\Decision\IsVerifiedDecision;
 use Tooly\Script\Decision\OnlyDevDecision;
-use Tooly\Script\Decision\UseFallbackURLDecision;
 use Tooly\Model\Tool;
 
 /**
@@ -124,7 +123,6 @@ private function getDecisions()
         return [
             new OnlyDevDecision($this->configuration, $this->helper),
             new IsAccessibleDecision($this->configuration, $this->helper),
-            new UseFallbackURLDecision($this->configuration, $this->helper),
             new FileAlreadyExistDecision($this->configuration, $this->helper),
             new IsVerifiedDecision($this->configuration, $this->helper),
             new DoReplaceDecision($this->configuration, $this->helper, $this->io),

src/Script/Processor.php

@@ -74,6 +74,28 @@ public function testNotAccessibleToolSignUrlReturnsFalse()
         ])));
     }
 
+    public function testNotAccessibleToolUrlButAccessibleFallbackUrlReturnsTrue()
+    {
+        $downloader = $this
+            ->getMockBuilder(Downloader::class)
+            ->getMock();
+
+        $downloader
+            ->expects($this->exactly(2))
+            ->method('isAccessible')
+            ->will($this->onConsecutiveCalls(false, true));
+
+        $this->helper
+            ->expects($this->exactly(2))
+            ->method('getDownloader')
+            ->willReturn($downloader);
+
+        $decision = new IsAccessibleDecision($this->configuration, $this->helper);
+        $this->assertTrue($decision->canProceed(ToolFactory::createTool('tool', __DIR__, [
+            'fallback-url' => 'fallback-url'
+        ])));
+    }
+
     public function testAccessibleUrlsWillReturnTrue()
     {
         $downloader = $this

tests/Script/Decision/IsAccessibleDecisionTest.php

@@ -121,4 +121,56 @@ public function testCanSuccessfullyDownloadATool()
         $processor = new Processor($this->io, $this->helper, $this->configuration);
         $processor->process($tool);
     }
+
+    public function testCanSuccessfullyDownloadAToolViaFallbackUrl()
+    {
+        vfsStream::setup('bin');
+
+        $downloader = $this
+            ->getMockBuilder(Downloader::class)
+            ->getMock();
+
+        $downloader
+            ->expects($this->exactly(3))
+            ->method('isAccessible')
+            ->will($this->onConsecutiveCalls(false, true, false));
+
+        $filesystem = $this
+            ->getMockBuilder(Filesystem::class)
+            ->getMock();
+
+        $filesystem
+            ->method('isFileAlreadyExist')
+            ->willReturn(false);
+
+        $this->helper
+            ->method('getFilesystem')
+            ->willReturn($filesystem);
+
+        $this->helper
+            ->expects($this->exactly(4))
+            ->method('getDownloader')
+            ->willReturn($downloader);
+
+        $this->helper
+            ->method('isFileAlreadyExist')
+            ->willReturn(false);
+
+        $this->io
+            ->expects($this->exactly(2))
+            ->method('write');
+
+        $tool = $this
+            ->getMockBuilder(Tool::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $tool
+            ->expects($this->exactly(2))
+            ->method('getFallbackUrl')
+            ->willReturn('//test.html');
+
+        $processor = new Processor($this->io, $this->helper, $this->configuration);
+        $processor->process($tool);
+    }
 }