Add command to list available servers (#245)

* Add command to list available servers

* Apply fixes from StyleCI

Co-authored-by: Marcel Pociot <mpociot@users.noreply.github.com>
Co-authored-by: Marcel Pociot <m.pociot@gmail.com>

app/Commands/ServerListCommand.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Commands;
+
+use Illuminate\Support\Facades\Http;
+use Illuminate\Support\Str;
+use LaravelZero\Framework\Commands\Command;
+
+class ServerListCommand extends Command
+{
+    const DEFAULT_SERVER_ENDPOINT = 'https://expose.beyondco.de/api/servers';
+
+    protected $signature = 'servers';
+
+    protected $description = 'Set or retrieve the default server to use with Expose.';
+
+    public function handle()
+    {
+        $servers = collect($this->lookupRemoteServers())->map(function ($server) {
+            return [
+                'key' => $server['key'],
+                'region' => $server['region'],
+                'plan' => Str::ucfirst($server['plan']),
+            ];
+        });
+
+        $this->info('You can connect to a specific server with the --server=key option or set this server as default with the default-server command.');
+        $this->info('');
+
+        $this->table(['Key', 'Region', 'Type'], $servers);
+    }
+
+    protected function lookupRemoteServers()
+    {
+        try {
+            return Http::get(config('expose.server_endpoint', static::DEFAULT_SERVER_ENDPOINT))->json();
+        } catch (\Throwable $e) {
+            return [];
+        }
+    }
+}