"""
Punto de entrada de la API.  Ejecutar con:
  uvicorn app.main:app --host 0.0.0.0 --port 8000 --reload
"""

import os
import pathlib

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

from app.routers import documents, presentations, query

app = FastAPI(
    title="chatbot-Norm API",
    version="0.2.0",
    description="RAG API para consultas sobre NORM y química.",
)

# ---------------------------------------------------------------------------
# CORS — ajustar ALLOWED_ORIGINS en producción vía variable de entorno
# ---------------------------------------------------------------------------
_raw_origins = os.getenv(
    "ALLOWED_ORIGINS",
    "http://localhost:3000,http://localhost:5173,"
    "http://127.0.0.1:3000,http://127.0.0.1:5173",
)
allowed_origins = [o.strip() for o in _raw_origins.split(",") if o.strip()]

app.add_middleware(
    CORSMiddleware,
    allow_origins=allowed_origins,
    allow_origin_regex=r"https?://(localhost|127\.0\.0\.1)(:\d+)?",
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# ---------------------------------------------------------------------------
# Routers
# ---------------------------------------------------------------------------
app.include_router(query.router)
app.include_router(documents.router)
app.include_router(presentations.router)


@app.get("/health")
async def health_check():
    return {"status": "ok"}


# ---------------------------------------------------------------------------
# SPA — debe ir al final para no solapar las rutas de la API
# ---------------------------------------------------------------------------
_static_dir = pathlib.Path(__file__).parent / "static"
if _static_dir.exists():
    app.mount("/", StaticFiles(directory=_static_dir, html=True), name="spa")