first commit

app/media/schemas.py

@@ -0,0 +1,32 @@
+from pydantic import BaseModel, ConfigDict, Field
+
+
+class UploadUrlRequest(BaseModel):
+    file_name: str = Field(min_length=1, max_length=255)
+    file_type: str = Field(min_length=1, max_length=64)
+    file_size: int = Field(gt=0)
+
+
+class UploadUrlResponse(BaseModel):
+    upload_url: str
+    file_url: str
+    object_key: str
+    expires_in: int
+    required_headers: dict[str, str]
+
+
+class AttachmentCreateRequest(BaseModel):
+    message_id: int
+    file_url: str = Field(min_length=1, max_length=1024)
+    file_type: str = Field(min_length=1, max_length=64)
+    file_size: int = Field(gt=0)
+
+
+class AttachmentRead(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    id: int
+    message_id: int
+    file_url: str
+    file_type: str
+    file_size: int