"""Fin-hub FastAPI application factory."""

from __future__ import annotations

from fastapi import FastAPI
from pydantic import BaseModel

from fin_hub import __version__
from fin_hub.routers import create_runway_router


class HealthResponse(BaseModel):
    service: str
    status: str
    version: str


def create_app() -> FastAPI:
    app = FastAPI(
        title="Fin Hub API",
        version=__version__,
        description="Read surfaces for runway projection and monthly burn.",
    )

    @app.get("/healthz", response_model=HealthResponse, tags=["system"])
    def healthz() -> HealthResponse:
        return HealthResponse(service="fin-hub", status="ok", version=__version__)

    app.include_router(create_runway_router())
    return app


app = create_app()