feat: initialize aivideo project

backend/app/core/storage.py

@@ -0,0 +1,53 @@
+from __future__ import annotations
+
+import hashlib
+from pathlib import Path
+from uuid import uuid4
+
+from fastapi import UploadFile
+
+from app.common.config.settings import get_settings
+
+
+settings = get_settings()
+
+
+class LocalStorageService:
+    def __init__(self) -> None:
+        self.root = settings.storage_root
+        self.root.mkdir(parents=True, exist_ok=True)
+
+    def build_public_url(self, storage_key: str) -> str:
+        base = settings.storage_public_base_url.rstrip("/")
+        normalized_key = storage_key.replace("\\", "/")
+        return f"{base}/{normalized_key}"
+
+    def save_upload(self, upload: UploadFile, *, folder: str) -> dict:
+        ext = Path(upload.filename or "file.bin").suffix
+        storage_key = f"{folder}/{uuid4().hex}{ext}"
+        path = self.root / storage_key
+        path.parent.mkdir(parents=True, exist_ok=True)
+        content = upload.file.read()
+        path.write_bytes(content)
+        return {
+            "storage_key": storage_key,
+            "file_size": len(content),
+            "sha256": hashlib.sha256(content).hexdigest(),
+            "public_url": self.build_public_url(storage_key),
+        }
+
+    def save_bytes(self, content: bytes, *, filename: str, folder: str) -> dict:
+        ext = Path(filename).suffix or ".bin"
+        storage_key = f"{folder}/{uuid4().hex}{ext}"
+        path = self.root / storage_key
+        path.parent.mkdir(parents=True, exist_ok=True)
+        path.write_bytes(content)
+        return {
+            "storage_key": storage_key,
+            "file_size": len(content),
+            "sha256": hashlib.sha256(content).hexdigest(),
+            "public_url": self.build_public_url(storage_key),
+        }
+
+
+storage_service = LocalStorageService()