#!/usr/bin/env python3
#-*- coding: utf-8 -*-
from buttplug.client import (
    ButtplugClient,
    ButtplugClientDevice,
    ButtplugClientConnectorError,
    ButtplugClientWebsocketConnector,
)
from buttplug.core import ButtplugLogLevel
import asyncio

from datetime import datetime
from collections.abc import Iterator
from re import match

async def cancel_me():
    print('cancel_me(): before sleep')

    try:
        await asyncio.sleep(3600)
    except asyncio.CancelledError:
        pass


async def device_added_task(dev: ButtplugClientDevice):
    print("Device Added: {}".format(dev.name))
    if "VibrateCmd" in dev.allowed_messages.keys():
        # stolen from <https://stackoverflow.com/a/54263201>
        def follow(file, sleep_sec=0.1) -> Iterator[str]:
            """ Yield each line from a file as they are written.
            `sleep_sec` is the time to sleep after empty reads. """
            line = ''
            while True:
                tmp = file.readline()
                if tmp is not None:
                    line += tmp
                    if line.endswith("\n"):
                        yield line
                        line = ''
                elif sleep_sec:
                    time.sleep(sleep_sec)


        with open("debug.txt", 'r') as file:
            for line in follow(file):
                pattern = '^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}: ACTION\[Main\]: \[rumble\] (queue|instant) \d+(.\d+)? \d+(.\d+)?$'
                if match(pattern, line) is None:
                    continue
                parts = line.split(" ")
                datetime_log_string = " ".join([
                    parts[0],
                    parts[1],
                ])
                datetime_log = datetime.strptime(
                    datetime_log_string,
                    '%Y-%m-%d %H:%M:%S:'
                )
                elapsed_time = datetime.now() - datetime_log
                if elapsed_time.seconds > 0:
                    continue  # skip old lines
                strength = float(parts[5])
                duration = float(parts[6])
                # TODO: implement instant/queue distinction
                await dev.send_vibrate_cmd(strength)
                await asyncio.sleep(duration)
                await dev.send_vibrate_cmd(0.0)
        await dev.send_stop_device_cmd()

def device_added(emitter, dev: ButtplugClientDevice):
    asyncio.create_task(device_added_task(dev))

def device_removed(emitter, dev: ButtplugClientDevice):
    print("Device removed: ", dev)

async def main():
    client = ButtplugClient("Minetest Client ♥ 🍆 💦 🍑")
    connector = ButtplugClientWebsocketConnector("ws://127.0.0.1:12345")

    client.device_added_handler += device_added
    client.device_removed_handler += device_removed

    try:
        await client.connect(connector)
    except ButtplugClientConnectorError as e:
        print("Could not connect to server, exiting: {}".format(e.message))
        return

    await client.start_scanning()

    task = asyncio.create_task(cancel_me())
    try:
        await task
    except asyncio.CancelledError:
        pass

    await client.stop_scanning()

    await client.disconnect()
    print("Disconnected, quitting")

asyncio.run(main(), debug=True)