forked from zhouruizhe/gmTouringMiniApp
84 lines
2.4 KiB
Python
84 lines
2.4 KiB
Python
from __future__ import annotations
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import os
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from fastapi import FastAPI, HTTPException
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from fastapi.middleware.cors import CORSMiddleware
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from .knowledge import KnowledgeBase
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from .llm import LLMError, LLMService, LLMTimeout
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from .planner import PlannerService, SessionStore
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from .schemas import HealthResponse, MessageRequest, PlanResponse, TravelPreferences
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try:
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from dotenv import load_dotenv
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load_dotenv()
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except ImportError:
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# Mock mode can run without python-dotenv; production installs project deps.
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pass
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knowledge = KnowledgeBase()
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llm = LLMService(knowledge)
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planner = PlannerService(knowledge, llm, SessionStore())
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app = FastAPI(
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title="光明区文旅行程助手 API",
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version="0.1.0",
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description="POC：本地知识检索 + OpenAI 兼容模型 + 内存会话",
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)
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origins = [
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origin.strip()
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for origin in os.getenv(
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"CORS_ORIGINS", "http://localhost:5173,http://127.0.0.1:5173"
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).split(",")
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if origin.strip()
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]
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app.add_middleware(
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CORSMiddleware,
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allow_origins=origins,
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allow_credentials=False,
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allow_methods=["GET", "POST"],
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allow_headers=["*"],
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)
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@app.get("/api/v1/health", response_model=HealthResponse)
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async def health() -> HealthResponse:
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return HealthResponse(
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status="ok",
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llm_mode=llm.mode,
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model_configured=llm.configured,
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knowledge_count=knowledge.count,
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)
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@app.post("/api/v1/plans", response_model=PlanResponse)
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async def create_plan(preferences: TravelPreferences) -> PlanResponse:
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try:
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return await planner.create(preferences)
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except LookupError as exc:
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raise HTTPException(status_code=404, detail=str(exc)) from exc
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except LLMTimeout as exc:
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raise HTTPException(status_code=504, detail=str(exc)) from exc
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except (LLMError, ValueError) as exc:
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raise HTTPException(status_code=502, detail=str(exc)) from exc
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@app.post(
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"/api/v1/conversations/{conversation_id}/messages",
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response_model=PlanResponse,
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)
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async def adjust_plan(
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conversation_id: str, request: MessageRequest
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) -> PlanResponse:
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try:
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return await planner.adjust(conversation_id, request.message)
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except LookupError as exc:
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raise HTTPException(status_code=404, detail=str(exc)) from exc
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except LLMTimeout as exc:
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raise HTTPException(status_code=504, detail=str(exc)) from exc
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except (LLMError, ValueError) as exc:
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raise HTTPException(status_code=502, detail=str(exc)) from exc
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