init project

backend/app/services/storage.py

@@ -0,0 +1,28 @@
+import os
+from io import BytesIO
+
+# 先实现本地文件存储，MinIO 作为选项
+STORAGE_BASE = os.getenv("LOCAL_STORAGE_PATH", "./data/files")
+
+
+def save_file(content: bytes, file_path: str) -> str:
+    """保存文件到本地存储，返回完整路径"""
+    full_path = os.path.join(STORAGE_BASE, file_path)
+    os.makedirs(os.path.dirname(full_path), exist_ok=True)
+    with open(full_path, "wb") as f:
+        f.write(content)
+    return full_path
+
+
+def read_file(file_path: str) -> bytes:
+    """读取文件内容"""
+    full_path = os.path.join(STORAGE_BASE, file_path)
+    with open(full_path, "rb") as f:
+        return f.read()
+
+
+def delete_file(file_path: str):
+    """删除文件"""
+    full_path = os.path.join(STORAGE_BASE, file_path)
+    if os.path.exists(full_path):
+        os.remove(full_path)