#!/usr/bin/env python3

import logging
from json import dumps
from time import sleep

import paho.mqtt.client as mqtt
from requests import RequestException, get

try:
    # python 3.11
    from tomllib import loads as toml_load
except ImportError:
    from rtoml import load as toml_load

with open("config.toml") as f:
    CONFIG = toml_load(f.read())


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

LOG = logging.getLogger("main")
MLOG = logging.getLogger("mqtt")

state = None

client = mqtt.Client()
client.username_pw_set(CONFIG["mqtt"]["user"], CONFIG["mqtt"]["password"])
client.connect(CONFIG["mqtt"]["host"], 1883, 60)
client.loop_start()


def mqtt_out(message, level="INFO", device=None):
    key = "infobeamer"
    if device:
        key += f"/{device['id']}"
        message = f"[{device['description']}] {message}"

    client.publish(
        CONFIG["mqtt"]["topic"],
        dumps(
            {
                "level": level,
                "component": key,
                "msg": message,
            }
        ),
    )


def mqtt_dump_state(device):
    mqtt_out(
        "Sync status: {} - Location: {} - Running Setup: {} ({}) - Resolution: {}".format(
            "yes" if device["is_synced"] else "unknown",
            device["location"],
            device["setup"]["name"],
            device["setup"]["id"],
            device["run"].get("resolution", "unknown"),
        ),
        device=device,
    )


mqtt_out("Monitor starting up")
while True:
    try:
        try:
            r = get("https://info-beamer.com/api/v1/device/list", auth=("", CONFIG["api_key"]))
            r.raise_for_status()
            ib_state = r.json()["devices"]
        except RequestException as e:
            LOG.exception("Could not get data from info-beamer")
            mqtt_out(
                f"Could not get data from info-beamer: {e!r}",
                level="WARN",
            )
        else:
            new_state = {}
            for device in ib_state:
                did = str(device["id"])

                if did in new_state:
                    mqtt_out("DUPLICATE DETECTED!", level="ERROR", device=device)
                    continue

                new_state[did] = device
                must_dump_state = False

                if state is not None:
                    if did not in state:
                        LOG.info(
                            "new device found: {} [{}]".format(
                                did,
                                device["description"],
                            )
                        )
                        mqtt_out(
                            'new device found with name "{}"!'.format(
                                device["description"]
                            ),
                            device=device,
                        )
                        if device["is_online"]:
                            must_dump_state = True

                    else:
                        if device["is_online"] != state[did]["is_online"]:
                            online_status = (
                                "online from {}".format(device["run"]["public_addr"])
                                if device["is_online"]
                                else "offline"
                            )

                            LOG.info("device {} is now {}".format(did, online_status))
                            mqtt_out(
                                f"online status changed to {online_status}",
                                device=device,
                            )
                            if device["is_online"]:
                                must_dump_state = True

                        if device["is_online"]:
                            if device["maintenance"]:
                                mqtt_out(
                                    "maintenance required: {}".join(
                                        sorted(device["maintenance"])
                                    ),
                                    level="WARN",
                                    device=device,
                                )

                        if (
                            device["is_synced"] != state[did]["is_synced"]
                            or device["location"] != state[did]["location"]
                            or device["setup"]["name"] != state[did]["setup"]["name"]
                            or device["run"].get("resolution")
                            != state[did]["run"].get("resolution")
                        ):
                            must_dump_state = True

                    if must_dump_state:
                        mqtt_dump_state(device)

                else:
                    LOG.info("adding device {} to empty state".format(device["id"]))

            state = new_state
        sleep(30)
    except KeyboardInterrupt:
        break

mqtt_out("Monitor exiting")