"""JH Photomaton -- Interface de gestion (Les Sapins Du Web)."""

import asyncio
import logging
from contextlib import asynccontextmanager
from pathlib import Path

from fastapi import FastAPI, WebSocket, WebSocketDisconnect
from fastapi.staticfiles import StaticFiles
from starlette.middleware.sessions import SessionMiddleware

from backend.services.config_service import ConfigService
from backend.services.event_service import EventService
from backend.services.led_service import LEDService
from backend.services.button_service import ButtonService
from backend.services.photobooth_service import PhotoboothService
from backend.services.printer_service import PrinterService
from backend.services.system_service import SystemService
from backend.utils.ws_manager import WSManager
from backend.api import (
    gallery,
    admin_api,
    admin_gallery_api,
    leds_api,
    system_api,
    print_api,
    actions_api,
    webhooks,
    event_api,
)

logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
)
logger = logging.getLogger(__name__)

BASE_DIR = Path(__file__).parent


@asynccontextmanager
async def lifespan(app: FastAPI):
    config_svc = ConfigService(BASE_DIR / "config" / "settings.yaml")
    config = config_svc.load()

    ws_manager = WSManager()
    photobooth_svc = PhotoboothService(config)
    system_svc = SystemService()
    printer_svc = PrinterService(config)
    event_svc = EventService()

    await printer_svc.init_db(BASE_DIR / "data" / "print_queue.db")
    await event_svc.init_db(BASE_DIR / "data" / "events.db")

    from datetime import datetime as _dt
    ev = config.event
    if not ev.started_at:
        ev.started_at = _dt.now().timestamp()
    await event_svc.ensure_event(ev.slug, ev.name, ev.started_at)

    led_svc = LEDService(config)
    led_svc.start()

    loop = asyncio.get_event_loop()
    led_svc.set_loop(loop)
    led_svc.set_on_change(ws_manager.broadcast)

    button_svc = ButtonService(config, led_svc, photobooth_svc, ws_manager, loop)
    button_svc.start()

    # Injection du service LED dans le printer_service (pour LED après impression background)
    printer_svc.set_led_service(led_svc)

    app.state.config = config
    app.state.config_service = config_svc
    app.state.ws_manager = ws_manager
    app.state.led_service = led_svc
    app.state.button_service = button_svc
    app.state.photobooth_service = photobooth_svc
    app.state.printer_service = printer_svc
    app.state.system_service = system_svc
    app.state.event_service = event_svc

    stats_task = asyncio.create_task(_system_stats_loop(system_svc, ws_manager))
    printer_task = asyncio.create_task(_printer_monitor_loop(printer_svc, led_svc, ws_manager))

    logger.info("JH Photomaton demarre -- port %d", config.app.port)
    led_svc.play("idle")

    yield

    stats_task.cancel()
    printer_task.cancel()
    button_svc.stop()
    led_svc.stop()
    await photobooth_svc.close()
    await printer_svc.close()
    await event_svc.close()
    logger.info("JH Photomaton arrete")


async def _printer_monitor_loop(printer_svc: PrinterService, led_svc: LEDService, ws: WSManager):
    """Surveille les imprimantes toutes les 30s et joue l'effet error si une est en panne."""
    # Effets qui ne doivent pas être écrasés par le moniteur
    ACTIVE_EFFECTS = {"countdown", "capture", "captured", "printing", "finished"}
    await asyncio.sleep(15)  # délai initial pour laisser les services démarrer
    while True:
        try:
            statuses = await printer_svc.get_printers_status()
            has_error = any(
                s.get("state") in ("disabled", "error", "offline")
                or bool(s.get("reasons"))
                for s in statuses
            )
            current = led_svc.current_effect
            if current not in ACTIVE_EFFECTS:
                if has_error and current != "error":
                    led_svc.play("error")
                    await ws.broadcast({"type": "led_effect", "effect": "error"})
                    logger.info("Moniteur imprimante: erreur détectée → LED error")
                elif not has_error and current == "error":
                    led_svc.play("idle")
                    await ws.broadcast({"type": "led_effect", "effect": "idle"})
                    logger.info("Moniteur imprimante: erreur résolue → LED idle")
        except Exception as e:
            logger.debug("Printer monitor: %s", e)
        await asyncio.sleep(30)


async def _system_stats_loop(sys_svc: SystemService, ws: WSManager):
    while True:
        try:
            stats = sys_svc.get_stats()
            await ws.broadcast({"type": "system_stats", "data": stats})
        except Exception as e:
            logger.debug("Stats loop: %s", e)
        await asyncio.sleep(5)


app = FastAPI(
    title="JH Photomaton",
    description="Interface de gestion du photomaton -- Les Sapins Du Web",
    version="1.0.0",
    lifespan=lifespan,
)

app.add_middleware(
    SessionMiddleware,
    secret_key="jh-photomaton-session-2026",
    max_age=86400,
)

app.mount("/static", StaticFiles(directory=BASE_DIR / "frontend" / "static"), name="static")

app.include_router(gallery.router)
app.include_router(admin_api.router)
app.include_router(admin_gallery_api.router)
app.include_router(leds_api.router, prefix="/api")
app.include_router(system_api.router, prefix="/api")
app.include_router(print_api.router, prefix="/api")
app.include_router(actions_api.router, prefix="/api")
app.include_router(webhooks.router, prefix="/api")
app.include_router(event_api.router, prefix="/api")


@app.websocket("/ws")
async def websocket_endpoint(websocket: WebSocket):
    ws_manager: WSManager = websocket.app.state.ws_manager
    await ws_manager.connect(websocket)
    try:
        led = websocket.app.state.led_service
        sys_svc = websocket.app.state.system_service
        await ws_manager.send(websocket, {"type": "connected", "led_effect": led.current_effect})
        await ws_manager.send(websocket, {"type": "system_stats", "data": sys_svc.get_stats()})
    except Exception:
        pass
    try:
        while True:
            data = await websocket.receive_text()
            import json
            try:
                msg = json.loads(data)
                if msg.get("type") == "ping":
                    await ws_manager.send(websocket, {"type": "pong"})
            except Exception:
                pass
    except WebSocketDisconnect:
        ws_manager.disconnect(websocket)


if __name__ == "__main__":
    import uvicorn
    cfg = ConfigService(BASE_DIR / "config" / "settings.yaml").load()
    uvicorn.run("main:app", host=cfg.app.host, port=cfg.app.port, reload=cfg.app.debug, log_level="info")