# app/main.py — Linnet FastAPI application factory
from __future__ import annotations

import logging
import os
from contextlib import asynccontextmanager

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

from app.api import audio, corrections, events, export, history, samples, sessions
from app.config import settings
from app.services import session_store

logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s %(levelname)s %(name)s — %(message)s",
)


@asynccontextmanager
async def lifespan(app: FastAPI):
    # Startup: begin idle session reaper
    session_store.start_reaper()
    yield
    # Shutdown: cancel the reaper cleanly
    await session_store.stop_reaper()


app = FastAPI(
    title="Linnet",
    description="Real-time tone annotation — tonal subtext labels for ND/autistic users",
    version="0.1.0",
    lifespan=lifespan,
)

# ── Mode middleware (applied before CORS so headers are always present) ──────
if settings.demo_mode:
    from app.middleware.demo import DemoModeMiddleware
    app.add_middleware(DemoModeMiddleware)
    logging.getLogger(__name__).info("DEMO_MODE active")

if settings.cloud_mode:
    from app.middleware.cloud import CloudAuthMiddleware
    app.add_middleware(CloudAuthMiddleware)
    logging.getLogger(__name__).info("CLOUD_MODE active")

# ── CORS ─────────────────────────────────────────────────────────────────────
_frontend_port = str(settings.linnet_frontend_port)
_origins = [
    f"http://localhost:{_frontend_port}",
    f"http://127.0.0.1:{_frontend_port}",
]
if settings.cloud_mode:
    _origins += [
        "https://menagerie.circuitforge.tech",
        "https://circuitforge.tech",
    ]

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

# ── Routers ───────────────────────────────────────────────────────────────────
app.include_router(sessions.router)
app.include_router(events.router)
app.include_router(history.router)
app.include_router(audio.router)
app.include_router(export.router)
app.include_router(samples.router)
app.include_router(corrections.router, prefix="/corrections", tags=["corrections"])


@app.get("/health")
def health() -> dict:
    mode = "demo" if settings.demo_mode else ("cloud" if settings.cloud_mode else "dev")
    return {"status": "ok", "service": "linnet", "mode": mode}