126 lines
3.5 KiB
Python
126 lines
3.5 KiB
Python
"""FastAPI backend for LLM Council."""
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from fastapi import FastAPI, HTTPException
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from fastapi.middleware.cors import CORSMiddleware
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from pydantic import BaseModel
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from typing import List, Dict, Any
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import uuid
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from . import storage
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from .council import run_full_council, generate_conversation_title
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app = FastAPI(title="LLM Council API")
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# Enable CORS for local development
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app.add_middleware(
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CORSMiddleware,
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allow_origins=["http://localhost:5173", "http://localhost:3000"],
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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class CreateConversationRequest(BaseModel):
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"""Request to create a new conversation."""
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pass
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class SendMessageRequest(BaseModel):
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"""Request to send a message in a conversation."""
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content: str
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class ConversationMetadata(BaseModel):
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"""Conversation metadata for list view."""
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id: str
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created_at: str
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title: str
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message_count: int
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class Conversation(BaseModel):
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"""Full conversation with all messages."""
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id: str
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created_at: str
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title: str
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messages: List[Dict[str, Any]]
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@app.get("/")
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async def root():
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"""Health check endpoint."""
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return {"status": "ok", "service": "LLM Council API"}
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@app.get("/api/conversations", response_model=List[ConversationMetadata])
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async def list_conversations():
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"""List all conversations (metadata only)."""
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return storage.list_conversations()
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@app.post("/api/conversations", response_model=Conversation)
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async def create_conversation(request: CreateConversationRequest):
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"""Create a new conversation."""
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conversation_id = str(uuid.uuid4())
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conversation = storage.create_conversation(conversation_id)
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return conversation
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@app.get("/api/conversations/{conversation_id}", response_model=Conversation)
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async def get_conversation(conversation_id: str):
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"""Get a specific conversation with all its messages."""
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conversation = storage.get_conversation(conversation_id)
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if conversation is None:
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raise HTTPException(status_code=404, detail="Conversation not found")
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return conversation
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@app.post("/api/conversations/{conversation_id}/message")
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async def send_message(conversation_id: str, request: SendMessageRequest):
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"""
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Send a message and run the 3-stage council process.
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Returns the complete response with all stages.
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"""
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# Check if conversation exists
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conversation = storage.get_conversation(conversation_id)
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if conversation is None:
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raise HTTPException(status_code=404, detail="Conversation not found")
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# Check if this is the first message
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is_first_message = len(conversation["messages"]) == 0
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# Add user message
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storage.add_user_message(conversation_id, request.content)
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# If this is the first message, generate a title
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if is_first_message:
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title = await generate_conversation_title(request.content)
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storage.update_conversation_title(conversation_id, title)
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# Run the 3-stage council process
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stage1_results, stage2_results, stage3_result, metadata = await run_full_council(
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request.content
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)
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# Add assistant message with all stages
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storage.add_assistant_message(
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conversation_id,
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stage1_results,
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stage2_results,
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stage3_result
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)
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# Return the complete response with metadata
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return {
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"stage1": stage1_results,
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"stage2": stage2_results,
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"stage3": stage3_result,
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"metadata": metadata
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}
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if __name__ == "__main__":
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import uvicorn
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uvicorn.run(app, host="0.0.0.0", port=8001)
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