#!/usr/bin/env python3

import asyncio
import os
import sys
from time import sleep

import aiomqtt
import pytz
from discord import File, Intents
from discord.ext import commands
from discord_webhook import DiscordEmbed, DiscordWebhook

import bottleclip as clip

mqtt_host = os.getenv("MQTT_HOST")
if not mqtt_host:
    print("MQTT_HOST unset")
    sys.exit(1)

token = os.getenv("DISCORD_TOKEN")
if not token:
    print("DISCORD_TOKEN unset")
    sys.exit(1)

webhook_url = os.getenv("DISCORD_WEBHOOK_URL")
if not webhook_url:
    print("DISCORD_WEBHOOK_URL unset")
    sys.exit(1)

timezone = pytz.timezone("Europe/Amsterdam")

# Discord bot stuff
intents = Intents.default()
intents.message_content = True
intents.members = True
HobbyBot = commands.Bot(command_prefix="!", description="Bitlair Bot", intents=intents)


async def mqtt_get_one(topic, timeout=20):
    async with asyncio.timeout(timeout):
        async with aiomqtt.Client(mqtt_host) as mq:
            await mq.subscribe(topic)
            return await anext(mq.messages)


# Define bot commands
@HobbyBot.event
async def on_ready():
    print(f"Logged in as {HobbyBot.user} (ID: {HobbyBot.user.id})")


# !state
@HobbyBot.command(description="Bitlair Space State")
async def state(ctx):
    async with ctx.typing():
        try:
            msg = await mqtt_get_one("bitlair/state")
            space_state = msg.payload.decode("ascii")
            if space_state == "open":
                await ctx.reply("Bitlair is OPEN! :sunglasses:")
            elif space_state == "closed":
                await ctx.reply("Bitlair is closed :pensive:")
        except Exception as err:
            await ctx.reply("Meh, stuk")
            raise err


# !co2
@HobbyBot.command(description="co2 levels")
async def co2(ctx, where="hoofdruimte"):
    async with ctx.typing():
        try:
            msg = await mqtt_get_one(f"bitlair/climate/{where}/co2_ppm")
            await ctx.reply(f"{where}: {msg.payload.decode('ascii')} ppm\n")
        except Exception as err:
            await ctx.reply("Meh, stuk")
            raise err


# !temp
@HobbyBot.command(description="Temperature")
async def temp(ctx, where="hoofdruimte"):
    async with ctx.typing():
        try:
            msg = await mqtt_get_one(f"bitlair/climate/{where}/temperature_c")
            await ctx.reply(f"{where}: {msg.payload.decode('ascii')} °C\n")
        except Exception as err:
            await ctx.reply("Meh, stuk")
            raise err


# !humid
@HobbyBot.command(description="Humidity")
async def humid(ctx, where="hoofdruimte"):
    async with ctx.typing():
        try:
            msg = await mqtt_get_one(f"bitlair/climate/{where}/humidity_pct")
            await ctx.reply(f"{where}: {msg.payload.decode('ascii')} pct\n")
        except Exception as err:
            await ctx.reply("Meh, stuk")
            raise err


# !np
@HobbyBot.command(description="Now Playing")
async def np(ctx):
    async with ctx.typing():
        await ctx.reply("Now playing: Darude - Sandstorm")


# !bottleclip
@HobbyBot.command(description="Generate a bottle-clip STL file suitable for printing")
async def bottleclip(ctx, icon: str = "", ears: bool = False):
    icons = clip.list_icons()
    if icon not in icons:
        await ctx.reply(
            f"usage: `!bottleclip <icon> [<ears y|n>]`\n* `icon` must be one of {', '.join(icons)}"
        )
        return

    async with ctx.typing():
        label = ctx.author.nick or ctx.author.global_name
        stl_file = clip.create_stl(label, icon, ears)

        attach = File(stl_file.name, filename=f"{label}.stl")
        await ctx.reply("Ok! Hier is je flessenclip", file=attach)


def webhook_message(msg):
    webhook = DiscordWebhook(url=webhook_url, rate_limit_retry=True, content=msg)
    webhook.execute()


async def event_task():
    retained = {
        "bitlair/alarm",
        "bitlair/photos",
        "bitlair/state",
        "bitlair/state/djo",
    }

    async with aiomqtt.Client(mqtt_host) as mq:
        await asyncio.gather(*[mq.subscribe(topic) for topic in retained])
        async for msg in mq.messages:
            # Retained messages trigger an initial message on connecting. Prevent relaying them to Discord on startup.
            if str(msg.topic) in retained:
                retained.remove(str(msg.topic))
                continue

            payload = msg.payload.decode("ascii")

            if msg.topic.matches("bitlair/alarm"):
                webhook_message(f"Alarm: {payload}")
            elif msg.topic.matches("bitlair/state"):
                webhook_message(f"Bitlair is now {payload.upper()}")
            elif msg.topic.matches("bitlair/state/djo"):
                webhook_message(f"DJO is now {payload.upper()}")
            elif msg.topic.matches("bitlair/photos"):
                webhook = DiscordWebhook(url=webhook_url, rate_limit_retry=True)
                embed = DiscordEmbed(title="WIP Cam", color="fc5d1d")
                embed.set_url(f"https://bitlair.nl/fotos/view/{payload}")
                embed.set_image(f"https://bitlair.nl/fotos/photos/{payload}")
                webhook.add_embed(embed)
                webhook.execute()
            else:
                continue
            sleep(1)  # Prevent triggering rate limits.


async def main():
    t1 = asyncio.create_task(HobbyBot.start(token))
    t2 = asyncio.create_task(event_task())
    await asyncio.gather(t1, t2)


asyncio.run(main())