feat: implement storage provider with local and S3 adapters

src/lib/storage/storage.factory.ts

@@ -0,0 +1,28 @@
+import {
+    LocalStorageAdapter,
+    S3StorageAdapter,
+} from '@/lib/storage/storage.adapter';
+import { StorageProvider } from '@/lib/storage/storage.interface';
+
+/**
+ * Factory function to create the appropriate storage provider based on environment
+ */
+export function createStorageProvider(): StorageProvider {
+    const storageType = process.env.STORAGE_TYPE || 'local';
+
+    if (storageType === 's3') {
+        const bucketName = process.env.S3_BUCKET_NAME;
+        const region = process.env.S3_REGION || 'us-east-1';
+
+        if (!bucketName) {
+            throw new Error(
+                'S3_BUCKET_NAME environment variable is required when STORAGE_TYPE=s3'
+            );
+        }
+
+        return new S3StorageAdapter(bucketName, region);
+    }
+
+    // Default to local storage
+    return new LocalStorageAdapter();
+}