Improve caching, performance and add dry-run

app/Bunny/Filesystem/EdgeStorageCache.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace App\Bunny\Filesystem;
+
+use App\Bunny\Filesystem\Exceptions\FileNotFoundException;
+use App\Bunny\Filesystem\Exceptions\FilesystemException;
+use Psr\Http\Message\ResponseInterface;
+
+class EdgeStorageCache
+{
+    private EdgeStorage $edgeStorage;
+    private string $filename = '.well-known/bunny.sha256';
+
+    public function __construct(EdgeStorage $edgeStorage)
+    {
+        $this->edgeStorage = $edgeStorage;
+    }
+
+    /**
+     * @throws FilesystemException
+     */
+    public function parse(string $path): array
+    {
+        $contents = $this->edgeStorage->get(EdgeFile::fromFilename(
+            sprintf('%s/%s', $path, $this->filename),
+            File::EMPTY_SHA256,
+        ));
+
+        file_put_contents(base_path(sprintf('%s.bk', basename($this->filename))), $contents);
+
+        return $this->extract($contents);
+    }
+
+    public function save(string $local, string $edge, array $files): bool
+    {
+        $filename = sprintf('%s/%s', $edge, $this->filename);
+        $contents = $this->hydrate($files, $local, $edge);
+        $checksum = strtoupper(hash('sha256', $contents));
+
+        file_put_contents(base_path(sprintf('%s', basename($this->filename))), $contents);
+
+        $promise = $this->edgeStorage->put(new LocalFile($filename, $checksum, $contents));
+
+        /** @var ResponseInterface $response */
+        $response = $promise->wait();
+
+        return $response->getStatusCode() === 200;
+    }
+
+    private function extract(string $contents): array
+    {
+        if (!$array = json_decode($contents, true)) {
+            throw new FileNotFoundException('Cannot parse cache file.');
+        }
+
+        return array_map(fn(array $x) => EdgeFile::fromArray($x), $array);
+    }
+
+    private function hydrate(array $files, string $search = '', string $replace = ''): string
+    {
+        return json_encode(array_map(fn(LocalFile $x) => $x->toArray($search, $replace), $files), JSON_PRETTY_PRINT);
+    }
+
+    public function setFilename(string $filename)
+    {
+        $this->filename = $filename;
+    }
+}