"""FastAPI app factory.

Run with: `uvicorn mist.api.app:app --host 0.0.0.0 --port 8000`
"""

from __future__ import annotations

import logging
from contextlib import asynccontextmanager
from collections.abc import AsyncIterator

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

from mist.api import admin, auth, builds, catalog, downloads
from mist.config import settings
from mist.core import paths as core_paths

log = logging.getLogger(__name__)


@asynccontextmanager
async def lifespan(_: FastAPI) -> AsyncIterator[None]:
    logging.basicConfig(level=settings.log_level)
    log.info("Mist API starting; environment=%s", settings.environment)
    core_paths.ensure_dirs()
    yield
    log.info("Mist API stopping")


def create_app() -> FastAPI:
    app = FastAPI(title="Mist API", version="0.1.0", lifespan=lifespan)

    app.add_middleware(
        CORSMiddleware,
        allow_origins=settings.cors_origins or ["*"],
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )

    app.include_router(auth.router, prefix="/auth", tags=["auth"])
    app.include_router(catalog.router, prefix="/catalog", tags=["catalog"])
    app.include_router(admin.router, prefix="/admin", tags=["admin"])
    app.include_router(builds.router, prefix="/builds", tags=["builds"])
    app.include_router(downloads.router, prefix="/download", tags=["downloads"])

    @app.get("/healthz", tags=["health"])
    def healthz() -> dict[str, bool]:
        return {"ok": True}

    @app.get("/readyz", tags=["health"])
    def readyz() -> dict[str, bool]:
        # TODO: actually check db / redis / rabbitmq reachability
        return {"ok": True}

    return app


app = create_app()