from contextlib import asynccontextmanager

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from app.api.documents import router as documents_router
from app.api.onboarding import router as onboarding_router
from app.api.voice_onboarding import router as voice_router
from app.database import models
from app.database.database import Base, engine


@asynccontextmanager
async def lifespan(app: FastAPI):
    Base.metadata.create_all(bind=engine)
    yield


app = FastAPI(
    title="AI Patient Onboarding API",
    description="Multi-Model Voice-First Hospital Patient Onboarding Engine (Sarvam + OpenAI + Claude + Gemini)",
    version="1.0.0",
    lifespan=lifespan,
)

# Enable CORS for React Web & Mobile clients
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=False,
    allow_methods=["*"],
    allow_headers=["*"],
)


@app.options("/{full_path:path}")
async def options_preflight(full_path: str):
    from fastapi import Response, status
    return Response(
        status_code=status.HTTP_204_NO_CONTENT,
        headers={
            "Access-Control-Allow-Origin": "*",
            "Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, OPTIONS",
            "Access-Control-Allow-Headers": "*",
        },
    )

app.include_router(onboarding_router)
app.include_router(voice_router)
app.include_router(documents_router)


@app.get("/health")
async def health():
    return {
        "success": True,
        "service": "AI Patient Onboarding",
        "status": "healthy",
        "models": {
            "speech": "Sarvam AI (Indian Languages) / OpenAI Whisper",
            "conversation": "OpenAI GPT-4o-mini",
            "validation": "Claude 3.5 Sonnet",
            "vision_documents": "Gemini 1.5 Flash",
        },
    }