import asyncio
import json
import logging

import aiomqtt

from config import MQTT_HOST, MQTT_PORT, TOPOLOGY
from scenarios.compound import CompoundOrchestrator, COMPOUND_SCENARIOS
from bots.env_sensor import EnvSensorBot
from bots.pdu import PduBot
from bots.ups import UpsBot
from bots.crac import CracBot
from bots.water_leak import WaterLeakBot
from bots.generator import GeneratorBot
from bots.ats import AtsBot
from bots.chiller import ChillerBot
from bots.vesda import VesdaBot
from bots.network import NetworkBot
from bots.particles import ParticleBot

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


def build_bots() -> tuple[list, dict]:
    """Instantiate all bots. Returns (list, key→bot dict for scenario targeting).

    Keys include individual device IDs AND room IDs (mapped to all bots in that room).
    """
    bots = []
    by_key: dict[str, object | list] = {}
    site_id = TOPOLOGY["site_id"]

    for room in TOPOLOGY["rooms"]:
        room_id = room["room_id"]
        room_bots: list = []

        for rack_id in room["racks"]:
            env = EnvSensorBot(site_id, room_id, rack_id)
            pdu = PduBot(site_id, room_id, rack_id)
            bots += [env, pdu]
            by_key[rack_id] = env
            by_key[f"{rack_id}/pdu"] = pdu
            room_bots += [env, pdu]

        crac = CracBot(site_id, room["crac_id"])
        bots.append(crac)
        by_key[room["crac_id"]] = crac
        room_bots.append(crac)

        # Room-level targeting: hall-a targets ALL bots; /env and /pdu target subsets
        by_key[room_id] = room_bots
        by_key[f"{room_id}/env"] = [b for b in room_bots if isinstance(b, EnvSensorBot)]
        by_key[f"{room_id}/pdu"] = [b for b in room_bots if isinstance(b, PduBot)]

    for ups_id in TOPOLOGY["ups_units"]:
        ups = UpsBot(site_id, ups_id)
        bots.append(ups)
        by_key[ups_id] = ups

    for gen_id in TOPOLOGY.get("generators", []):
        gen = GeneratorBot(site_id, gen_id)
        bots.append(gen)
        by_key[gen_id] = gen

    for ats_id in TOPOLOGY.get("ats_units", []):
        ats = AtsBot(site_id, ats_id)
        bots.append(ats)
        by_key[ats_id] = ats

    for chiller_id in TOPOLOGY.get("chillers", []):
        chiller = ChillerBot(site_id, chiller_id)
        bots.append(chiller)
        by_key[chiller_id] = chiller

    for zone in TOPOLOGY.get("vesda_zones", []):
        vesda = VesdaBot(site_id, zone["zone_id"], zone["room_id"])
        bots.append(vesda)
        by_key[zone["zone_id"]] = vesda

    for leak_cfg in TOPOLOGY.get("leak_sensors", []):
        # Support both old string format and new dict format
        if isinstance(leak_cfg, str):
            leak = WaterLeakBot(site_id, leak_cfg)
            by_key[leak_cfg] = leak
        else:
            leak = WaterLeakBot(
                site_id,
                leak_cfg["sensor_id"],
                floor_zone=leak_cfg.get("floor_zone", "general"),
                under_floor=leak_cfg.get("under_floor", False),
                near_crac=leak_cfg.get("near_crac", False),
                room_id=leak_cfg.get("room_id"),
            )
            by_key[leak_cfg["sensor_id"]] = leak
        bots.append(leak)

    for sw_cfg in TOPOLOGY.get("switches", []):
        sw = NetworkBot(site_id, sw_cfg["switch_id"], port_count=sw_cfg.get("port_count", 48))
        bots.append(sw)
        by_key[sw_cfg["switch_id"]] = sw

    for ps_cfg in TOPOLOGY.get("particle_sensors", []):
        ps = ParticleBot(site_id, ps_cfg["room_id"])
        bots.append(ps)
        by_key[f"particles-{ps_cfg['room_id']}"] = ps

    return bots, by_key


async def listen_scenarios(
    client: aiomqtt.Client,
    by_key: dict,
    orchestrator: CompoundOrchestrator,
) -> None:
    """Listen for scenario control messages and apply them to bots."""
    await client.subscribe("bms/control/scenario")
    async for message in client.messages:
        if "control/scenario" not in str(message.topic):
            continue
        try:
            data     = json.loads(message.payload.decode())
            scenario = data.get("scenario")
            target   = data.get("target")  # rack_id, crac_id, ups_id — or None for all

            # Compound scenarios are handled by the orchestrator
            if scenario in COMPOUND_SCENARIOS:
                orchestrator.trigger(scenario)
                continue

            if scenario == "RESET":
                orchestrator.reset()
                continue

            if target:
                entry = by_key.get(target)
                if entry is None:
                    logger.warning(f"Unknown target '{target}'")
                elif isinstance(entry, list):
                    for bot in entry:
                        bot.set_scenario(scenario)
                    logger.info(f"Scenario '{scenario}' applied to {len(entry)} bots in {target}")
                else:
                    entry.set_scenario(scenario)
                    logger.info(f"Scenario '{scenario}' applied to {target}")
            else:
                # Collect unique bot instances (by_key also contains room-level lists)
                all_bots: set = set()
                for v in by_key.values():
                    if isinstance(v, list):
                        all_bots.update(v)
                    else:
                        all_bots.add(v)
                for bot in all_bots:
                    bot.set_scenario(scenario)
                logger.info(f"Scenario '{scenario}' applied to {len(all_bots)} bots")
        except Exception as e:
            logger.error(f"Scenario message error: {e}")


async def main() -> None:
    bots, by_key = build_bots()
    orchestrator = CompoundOrchestrator(by_key)
    logger.info(f"Built {len(bots)} simulator bots for site {TOPOLOGY['site_id']}")

    while True:
        try:
            async with aiomqtt.Client(MQTT_HOST, port=MQTT_PORT) as client:
                logger.info(f"Connected to MQTT at {MQTT_HOST}:{MQTT_PORT}")
                tasks = [asyncio.create_task(bot.run(client)) for bot in bots]
                tasks.append(asyncio.create_task(listen_scenarios(client, by_key, orchestrator)))
                await asyncio.gather(*tasks)
        except Exception as e:
            logger.error(f"Connection lost: {e} — reconnecting in 5s")
            await asyncio.sleep(5)


if __name__ == "__main__":
    asyncio.run(main())