wip

app/Commands/SetDefaultServerCommand.php

@@ -0,0 +1,94 @@
+<?php
+
+namespace App\Commands;
+
+use App\Client\Support\DefaultDomainNodeVisitor;
+use App\Client\Support\DefaultServerNodeVisitor;
+use App\Client\Support\InsertDefaultDomainNodeVisitor;
+use App\Client\Support\InsertDefaultServerNodeVisitor;
+use Illuminate\Console\Command;
+use PhpParser\Lexer\Emulative;
+use PhpParser\Node;
+use PhpParser\NodeFinder;
+use PhpParser\NodeTraverser;
+use PhpParser\NodeVisitor\CloningVisitor;
+use PhpParser\Parser\Php7;
+use PhpParser\PrettyPrinter\Standard;
+
+class SetDefaultServerCommand extends Command
+{
+    protected $signature = 'default-server {server?}';
+
+    protected $description = 'Set or retrieve the default server to use with Expose.';
+
+    public function handle()
+    {
+        $server = $this->argument('server');
+        if (! is_null($server)) {
+            $this->info('Setting the Expose default server to "'.$server.'"');
+
+            $configFile = implode(DIRECTORY_SEPARATOR, [
+                $_SERVER['HOME'] ?? $_SERVER['USERPROFILE'],
+                '.expose',
+                'config.php',
+            ]);
+
+            if (! file_exists($configFile)) {
+                @mkdir(dirname($configFile), 0777, true);
+                $updatedConfigFile = $this->modifyConfigurationFile(base_path('config/expose.php'), $server);
+            } else {
+                $updatedConfigFile = $this->modifyConfigurationFile($configFile, $server);
+            }
+
+            file_put_contents($configFile, $updatedConfigFile);
+
+            return;
+        }
+
+        if (is_null($server = config('expose.default_server'))) {
+            $this->info('There is no default server specified.');
+        } else {
+            $this->info('Current default server: '.$server);
+        }
+    }
+
+    protected function modifyConfigurationFile(string $configFile, string $server)
+    {
+        $lexer = new Emulative([
+            'usedAttributes' => [
+                'comments',
+                'startLine', 'endLine',
+                'startTokenPos', 'endTokenPos',
+            ],
+        ]);
+        $parser = new Php7($lexer);
+
+        $oldStmts = $parser->parse(file_get_contents($configFile));
+        $oldTokens = $lexer->getTokens();
+
+        $nodeTraverser = new NodeTraverser;
+        $nodeTraverser->addVisitor(new CloningVisitor());
+        $newStmts = $nodeTraverser->traverse($oldStmts);
+
+        $nodeFinder = new NodeFinder;
+
+        $defaultServerNode = $nodeFinder->findFirst($newStmts, function(Node $node) {
+            return ($node instanceof Node\Expr\ArrayItem && $node->key && $node->key->value === 'default_server');
+        });
+
+        if (is_null($defaultServerNode)) {
+            $nodeTraverser = new NodeTraverser;
+            $nodeTraverser->addVisitor(new InsertDefaultServerNodeVisitor());
+            $newStmts = $nodeTraverser->traverse($newStmts);
+        }
+
+        $nodeTraverser = new NodeTraverser;
+        $nodeTraverser->addVisitor(new DefaultServerNodeVisitor($server));
+
+        $newStmts = $nodeTraverser->traverse($newStmts);
+
+        $prettyPrinter = new Standard();
+
+        return $prettyPrinter->printFormatPreserving($newStmts, $oldStmts, $oldTokens);
+    }
+}