Improve lock file

app/Bunny/Lock/Lock.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace App\Bunny\Lock;
+
+use App\Bunny\Filesystem\Exceptions\FileNotFoundException;
+use App\Bunny\Lock\Exceptions\LockException;
+
+class Lock
+{
+    public const DEFAULT_FILENAME = '.well-known/bunny-cli.lock';
+
+    private array $contents;
+
+    private function __construct(array $contents)
+    {
+        $this->contents['version'] = 1;
+        $this->contents['_readme'] = [
+            'This file locks the files of your project to a known state',
+            'Read more about it at https://github.com/own3d/bunny-cli/wiki',
+            'This file is @generated automatically'
+        ];
+        $this->contents['files'] = $contents['files'] ?? [];
+    }
+
+    public static function parse(string $contents, string $filename = self::DEFAULT_FILENAME): self
+    {
+        if (!$array = json_decode($contents, true)) {
+            throw new FileNotFoundException(sprintf('Cannot decode %s file.', $filename));
+        }
+
+        if (!isset($array['version']) || $array['version'] !== 1) {
+            throw LockException::fromInvalidVersion($array['version'] ?? 'undefined');
+        }
+
+        return new self($array);
+    }
+
+    public static function fromFiles(array $files): self
+    {
+        return new self(['files' => $files]);
+    }
+
+    public function getFiles(): array
+    {
+        return $this->contents['files'];
+    }
+
+    public function toArray(): array
+    {
+        return $this->contents;
+    }
+
+    public function toString(): string
+    {
+        return json_encode($this->toArray(), JSON_PRETTY_PRINT);
+    }
+}