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"""OpenAI-compatible HTTP API for Sénia.
Open WebUI (and other OpenAI-API clients) talks to this endpoint set. We accept
the standard `/v1/chat/completions` shape, translate to internal types, hand
off to the orchestrator, and translate the response back to OpenAI shape.
"""
from fastapi import FastAPI, HTTPException, Request
from pydantic import BaseModel, ConfigDict
from .loop import handle_turn
from .models import Message
app = FastAPI(title="Sénia")
class ChatMessage(BaseModel):
role: str
content: str
class ChatCompletionRequest(BaseModel):
model_config = ConfigDict(extra="allow")
model: str
messages: list[ChatMessage]
user: str | None = None
@app.get("/v1/models")
def list_models():
return {
"object": "list",
"data": [{"id": "senia", "object": "model", "owned_by": "local"}],
}
@app.post("/v1/chat/completions")
def chat_completions(req: ChatCompletionRequest, request: Request):
# Open WebUI sends user info via custom headers when ENABLE_FORWARD_USER_INFO_HEADERS=true
user_name = request.headers.get("x-openwebui-user-name")
user_email = request.headers.get("x-openwebui-user-email")
# prefer name (friendlier), fall back to email, fall back to None
user = user_name or user_email
try:
response_text = handle_turn(
messages=[Message(role=m.role, content=m.content) for m in req.messages],
user=user,
)
except Exception as e:
raise HTTPException(status_code=500, detail=str(e))
return {
"id": "chat-1",
"object": "chat.completion",
"model": req.model,
"choices": [
{
"index": 0,
"message": {"role": "assistant", "content": response_text},
"finish_reason": "stop",
}
],
}
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