MAPG-89 add command that can link views from command line

mapg

@@ -7,5 +7,6 @@ $app = new Symfony\Component\Console\Application('MapGuesser Console', '');
 
 $app->add(new MapGuesser\Cli\DatabaseMigration());
 $app->add(new MapGuesser\Cli\AddUserCommand());
+$app->add(new MapGuesser\Cli\LinkViewCommand());
 
 $app->run();

src/Cli/LinkViewCommand.php

@@ -0,0 +1,69 @@
+<?php namespace MapGuesser\Cli;
+
+use FilesystemIterator;
+use MapGuesser\View\Linker;
+use RecursiveDirectoryIterator;
+use RecursiveIteratorIterator;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class LinkViewCommand extends Command
+{
+    public function configure()
+    {
+        $this->setName('view:link')
+            ->setDescription('Linking of views.')
+            ->addArgument('view', InputArgument::OPTIONAL, 'View file to be linked.');
+    }
+
+    public function execute(InputInterface $input, OutputInterface $output): int
+    {
+        $views = [];
+
+        $view = $input->getArgument('view');
+
+        if ($view !== null) {
+            $views[] = $view;
+        } else {
+            $folder = ROOT . '/views';
+            $folderLength = strlen($folder) + 1;
+
+            $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($folder, FilesystemIterator::SKIP_DOTS), RecursiveIteratorIterator::SELF_FIRST);
+
+            foreach ($iterator as $file) {
+                if ($file->isDir() || $file->getExtension() !== 'php') {
+                    continue;
+                }
+
+                $view = substr($file->getPath(), $folderLength) . '/' . $file->getBasename('.php');
+
+                if (strpos($view, 'templates') === 0) {
+                    continue;
+                }
+
+                $views[] = $view;
+            }
+        }
+
+        try {
+            foreach ($views as $view) {
+                $generator = new Linker($view);
+                $generator->generate();
+            }
+        } catch (\Exception $e) {
+            $output->writeln('<error>Linking view(s) failed!</error>');
+            $output->writeln('');
+
+            $output->writeln((string) $e);
+            $output->writeln('');
+
+            return 1;
+        }
+
+        $output->writeln('<info>View(s) successfully linked!</info>');
+
+        return 0;
+    }
+}