feat: Add AssemblyMappingManager to handle assembl

src/Snps/AssemblyMappingManager.php

@@ -0,0 +1,62 @@
+<?php
+
+namespace Dna\Snps;
+
+use PharData;
+use GuzzleHttp\Client;
+use Exception;
+
+class AssemblyMappingManager
+{
+    private Client $httpClient;
+
+    public function __construct()
+    {
+        $this->httpClient = new Client();
+    }
+
+    public function getAssemblyMappingData(string $sourceAssembly, string $targetAssembly): string
+    {
+        $filename = "assembly_mapping_{$sourceAssembly}_to_{$targetAssembly}.tar.gz";
+        $filepath = __DIR__ . "/resources/{$filename}";
+
+        if (!file_exists($filepath)) {
+            $url = "http://example.com/assembly_mapping/{$sourceAssembly}/{$targetAssembly}";
+            try {
+                $response = $this->httpClient->get($url);
+                if ($response->getStatusCode() === 200) {
+                    file_put_contents($filepath, $response->getBody()->getContents());
+                } else {
+                    throw new Exception("Failed to download assembly mapping data.");
+                }
+            } catch (Exception $e) {
+                throw new Exception("Error downloading assembly mapping data: " . $e->getMessage());
+            }
+        }
+
+        return $filepath;
+    }
+
+    public static function loadAssemblyMappingData(string $filename): array
+    {
+        $assemblyMappingData = [];
+        try {
+            $tar = new PharData($filename);
+            foreach ($tar as $file) {
+                if (strpos($file->getFilename(), '.json') !== false) {
+                    $content = file_get_contents($file->getPathname());
+                    $data = json_decode($content, true);
+                    if (json_last_error() === JSON_ERROR_NONE) {
+                        $assemblyMappingData[] = $data;
+                    } else {
+                        throw new Exception("Error parsing JSON data.");
+                    }
+                }
+            }
+        } catch (Exception $e) {
+            throw new Exception("Error loading assembly mapping data: " . $e->getMessage());
+        }
+
+        return $assemblyMappingData;
+    }
+}