"""FastAPI admin application."""
from __future__ import annotations

import os
import subprocess
import sys
from pathlib import Path

from fastapi import FastAPI
from fastapi.responses import FileResponse
from fastapi.staticfiles import StaticFiles

from admin.models import init_db
from admin.routes import router

app = FastAPI(title="Seed Admin", docs_url=None, redoc_url=None)

app.include_router(router)

_STATIC = Path(__file__).parent / "static"
app.mount("/static", StaticFiles(directory=str(_STATIC)), name="static")

_rq_worker: subprocess.Popen[bytes] | None = None


@app.on_event("startup")
def on_startup() -> None:
    global _rq_worker
    init_db()
    if os.environ.get("SKIP_INTERNAL_WORKER", "").lower() in ("1", "true", "yes"):
        return
    redis_url = os.environ.get("REDIS_URL", "redis://localhost:6379/0")
    _rq_worker = subprocess.Popen(
        [sys.executable, "-m", "rq", "worker", "--url", redis_url, "batch"],
        stdout=subprocess.DEVNULL,
        stderr=subprocess.DEVNULL,
    )


@app.on_event("shutdown")
def on_shutdown() -> None:
    if _rq_worker is not None:
        _rq_worker.terminate()
        try:
            _rq_worker.wait(timeout=5)
        except subprocess.TimeoutExpired:
            _rq_worker.kill()


@app.get("/")
def dashboard() -> FileResponse:
    return FileResponse(str(_STATIC / "dashboard.html"))