import asyncio
import datetime
from nio.rooms import MatrixRoom
from nio.events.room_events import RoomMessage
import simplematrixbotlib as botlib

from .its_api import ItSyndikatApi
from .config import Config


class ItSyndikatBot:
    bot: botlib.Bot
    its_api: ItSyndikatApi

    config: Config

    def __init__(self, config: Config):
        self.config = config

        self.current_open_state = None

        creds = botlib.Creds(
            config.matrix_homeserver,
            config.matrix_username,
            access_token=config.matrix_access_token,
            session_stored_file="",
        )

        self.its_api = ItSyndikatApi(config)

        self.bot = botlib.Bot(creds)

        self.bot.listener.on_message_event(self.on_message)

    async def run(self):
        async def poll_for_changes():
            while True:
                try:
                    status = await self.its_api.status()
                    new_state = status["state"]["open"]
                    if (
                        self.current_open_state is not None
                        and new_state != self.current_open_state
                    ):
                        await self.announce_open_change(new_state)
                    self.current_open_state = new_state
                except Exception as e:
                    pass

                await asyncio.sleep(60)

        asyncio.create_task(poll_for_changes())

        await self.bot.main()

    async def on_message(self, room, message):
        m = botlib.MessageMatch(room, message, self.bot, self.config.command_prefix)

        if m.is_not_from_this_bot() and m.prefix():
            if m.command("echo"):
                await self.echo(room, message, m.args())
            elif m.command("isitopen"):
                await self.isitopen(room, message)
            elif m.command("spaceping"):
                await self.spaceping(room, message)
            else:
                await self.bot.api.send_text_message(
                    room.room_id, f"Unknown command: {m.command()}"
                )

    async def announce_open_change(self, now_open: bool):
        room_ids = self.config.isitopen_announce_rooms
        if now_open:
            message = "opening IT-Syndikat - Ohai!"
        else:
            message = "closing IT-Syndikat - nap time!"

        for room_id in room_ids:
            await self.bot.api.async_client.room_send(
                room_id=room_id,
                message_type="m.room.message",
                content={
                    "msgtype": "m.notice",
                    "body": message,
                },
            )

    async def reply(self, room, message, reply):
        await self.bot.api.async_client.room_send(
            room_id=room.room_id,
            message_type="m.room.message",
            content={
                "msgtype": "m.text",
                "body": reply,
                "m.relates_to": {"m.in_reply_to": {"event_id": message.event_id}},
            },
        )

    async def echo(self, room, message, args):
        await self.bot.api.send_text_message(
            room.room_id, " ".join(arg for arg in args)
        )

    async def isitopen(self, room, message):
        try:
            status = await self.its_api.status()
            is_open = status["state"]["open"]
            self.current_open_state = is_open
            if is_open:
                date = datetime.datetime.fromtimestamp(status["state"]["lastchange"])
                text = f"positive! space has been open since {date}"
            else:
                text = "negative!"
        except Exception as e:
            text = f"error checking space status: {e}"

        await self.reply(room, message, text)

    async def spaceping(self, room: MatrixRoom, message: RoomMessage):
        await self.its_api.ping()
        await self.reply(room, message, "Hello Space!")