feat/enhance the multi-modal support (#8818)

api/core/file/enums.py

@@ -0,0 +1,55 @@
+from enum import Enum
+
+
+class FileType(str, Enum):
+    IMAGE = "image"
+    DOCUMENT = "document"
+    AUDIO = "audio"
+    VIDEO = "video"
+    CUSTOM = "custom"
+
+    @staticmethod
+    def value_of(value):
+        for member in FileType:
+            if member.value == value:
+                return member
+        raise ValueError(f"No matching enum found for value '{value}'")
+
+
+class FileTransferMethod(str, Enum):
+    REMOTE_URL = "remote_url"
+    LOCAL_FILE = "local_file"
+    TOOL_FILE = "tool_file"
+
+    @staticmethod
+    def value_of(value):
+        for member in FileTransferMethod:
+            if member.value == value:
+                return member
+        raise ValueError(f"No matching enum found for value '{value}'")
+
+
+class FileBelongsTo(str, Enum):
+    USER = "user"
+    ASSISTANT = "assistant"
+
+    @staticmethod
+    def value_of(value):
+        for member in FileBelongsTo:
+            if member.value == value:
+                return member
+        raise ValueError(f"No matching enum found for value '{value}'")
+
+
+class FileAttribute(str, Enum):
+    TYPE = "type"
+    SIZE = "size"
+    NAME = "name"
+    MIME_TYPE = "mime_type"
+    TRANSFER_METHOD = "transfer_method"
+    URL = "url"
+    EXTENSION = "extension"
+
+
+class ArrayFileAttribute(str, Enum):
+    LENGTH = "length"