from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from utils.utils import Base, engine

# Import every module's models so ORM classes register with Base before create_all
import calculation.models  # noqa: F401

Base.metadata.create_all(bind=engine)

from calculation.router import router as calculation_router

app = FastAPI(
    title="Simple Loan Calculator",
    description="A single-page web application that calculates loan payments, total interest, and amortization schedules for anonymous users without authentication.",
    version="1.0.0"
)

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=False,
    allow_methods=["*"],
    allow_headers=["*"],
)

app.include_router(calculation_router)