using DIP principle

Author: Alexsey-VR

src/Command.php

@@ -5,18 +5,14 @@
 use App\CommandInterface;
 use App\OutputInterface;
 
-class Command implements CommandInterface
+class ViewFilesCommand implements CommandInterface
 {
     protected $output;
-    protected $docopt;
-    protected $cliData;
     private const MAX_FILE_SIZE = 4096;
 
-    public function __construct(OutputInterface $output, string $doc)
+    public function __construct(OutputInterface $output)
     {
         $this->output = $output;
-        $this->docopt = $doc;
-        $this->cliData = $this->output->parseCommandData($this->docopt);
     }
 
     private function parseFile(string $filename): array
@@ -36,22 +32,20 @@ private function parseFile(string $filename): array
         return $keys;
     }
 
-    public function execute()
+    public function execute(object $cliData)
     {
-        if (isset($this->cliData['FILE1']) & isset($this->cliData['FILE2'])) {
-            if (file_exists($this->cliData['FILE1']) & file_exists($this->cliData['FILE2'])) {
-                $file1Content = $this->parseFile($this->cliData['FILE1']);
-                $file2Content = $this->parseFile($this->cliData['FILE2']);
+        if (isset($cliData['FILE1']) && isset($cliData['FILE2'])) {
+            if (file_exists($cliData['FILE1']) && file_exists($cliData['FILE2'])) {
+                $file1Content = $this->parseFile($cliData['FILE1']);
+                $file2Content = $this->parseFile($cliData['FILE2']);
 
                 print_r("File1 content:\n");
                 print_r($file1Content);
                 print_r("File2 content:\n");
                 print_r($file2Content);
             } else {
-                print_r("File {$this->cliData['FILE2']} not exists\n");
+                print_r("File {$cliData['FILE1']} or {$cliData['FILE2']} not exists\n");
             }
-        } else {
-            print_r("File {$this->cliData['FILE1']} not exists\n");
         }
     }
 }

src/CommandInterface.php

@@ -4,5 +4,5 @@
 
 interface CommandInterface
 {
-    public function execute();
+    public function execute(object $cliData);
 }

src/Gendiff.php

@@ -4,14 +4,12 @@
 
 use Docopt;
 use App\OutputInterface;
-use App\CommandInterface;
-use App\Invoker;
 use App\Command;
 
 function runGendiff(): void
 {
 
-    $doc = <<<'DOCOPT'
+    $docopt = <<<'DOCOPT'
     gendiff -h
 
     Generate diff
@@ -35,9 +33,8 @@ public function parseCommandData(string $docopt): object
             return Docopt::handle($docopt, array('version' => '1.0.6'));
         }
     };
+    $cliData = $output->parseCommandData($docopt);
 
-    $command = new Command($output, $doc);
-    $invoker = new Invoker();
-    $invoker->setCommand($command);
-    $invoker->run();
+    $command = new ViewFilesCommand($output);
+    $command->execute($cliData);
 }