added chat history

web/backend/app/schemas/__init__.py

@@ -162,6 +162,7 @@ class GenerateTableRequest(BaseModel):
 class LlmChatRequest(BaseModel):
     message: str = Field(min_length=1)
     table_type: str
+    chat_id: Optional[int] = None
 
 
 class LlmEdit(BaseModel):
@@ -171,10 +172,20 @@ class LlmEdit(BaseModel):
     fields: dict[str, Any] = {}
 
 
+class LlmContextUsage(BaseModel):
+    used: int = 0
+    limit: int = 0
+    percent: float = 0
+    prompt_tokens: Optional[int] = None
+    completion_tokens: Optional[int] = None
+
+
 class LlmChatResponse(BaseModel):
     reply: str
     edits: list[LlmEdit] = []
     message_id: Optional[int] = None
+    chat_id: Optional[int] = None
+    context: Optional[LlmContextUsage] = None
 
 
 class LlmApplyRequest(BaseModel):
@@ -182,6 +193,39 @@ class LlmApplyRequest(BaseModel):
     edits: list[LlmEdit]
 
 
+class LlmChatCreate(BaseModel):
+    title: Optional[str] = None
+    table_type: Optional[str] = None
+
+
+class LlmChatOut(BaseModel):
+    id: int
+    title: str
+    table_type: Optional[str] = None
+    created_at: datetime
+    updated_at: datetime
+    message_count: int = 0
+
+
+class LlmMessageOut(BaseModel):
+    id: int
+    role: str
+    content: str
+    table_type: Optional[str] = None
+    proposed_edits: Optional[list[Any]] = None
+    created_at: datetime
+
+
+class LlmChatDetail(BaseModel):
+    id: int
+    title: str
+    table_type: Optional[str] = None
+    created_at: datetime
+    updated_at: datetime
+    messages: list[LlmMessageOut] = []
+    context: Optional[LlmContextUsage] = None
+
+
 class ExportRequest(BaseModel):
     table_type: str
     format: str = "pdf"  # pdf | xlsx