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#!/usr/bin/env python3
import pymongo
import discord
import asyncio
import threading
import logging

import parsedatetime
import datetime
import difflib


TOKEN = "MjM5NzI3NzQ2Nzk0NzgyNzIw.Cu5BbA.z7bkO3Ncd_L80htVzREHYDsEGNk"
VERSION = "v0.1.0"

MODMIRROR = "266921381634113537"
MIRROR_IGNORE = []

client = pymongo.MongoClient()
db = client.vainbot

cli = discord.Client()

@cli.event
async def on_ready():
    log.warning("Logged in as " + cli.user.name + " (" + str(cli.user.id) + ")")


async def get_user(id):
    now = datetime.datetime.utcnow()
    user = db.usercache.find_one({
        "id": id,
        "date": {"$gt": now - datetime.timedelta(minutes=30)}
    })
    if user:
        return user
    user = await cli.get_user_info(id)
    db.usercache.insert_one({
        "id": id,
        "mention": user.mention,
        "date": now
    })
    return await get_user(id)

async def search_teammates(server, channel, who, query, notify=True):
    cal = parsedatetime.Calendar()
    now = cal.parseDT("now")[0]

    if " for " in query or " until " in query:
        delimit = query.rfind("for")
        if delimit == -1:
            delimit = query.rfind("until")

        startstr = query[:delimit]
        endstr = query[delimit:]
    else:
        startstr = query
        endstr = "for 30 minutes"

    start = cal.parseDT(startstr)[0]
    end = cal.parseDT(endstr, sourceTime=start)[0]

    if notify:
        queueid = db.playwithme.insert_one({
            "player": who.id,
            "start": start,
            "end": end
        }).inserted_id

        await cli.send_message(channel, "%s You are in queue.")
        await asyncio.sleep((start-now).total_seconds())

    players = []
    query = { "$or": [
            { "start": {
                    "$gte": start,
                    "$lte": end } },
            { "end": {
                    "$gte": start,
                    "$lte": end } },
            { "start": {"$lte": start},
                "end": {"$gte": end} },
            { "start": {"$gte": start},
                "end": {"$lte": end}
            } ] }
    for teammate in db.playwithme.find(query):
        mention = (await get_user(teammate["player"]))["mention"]
        if not mention in players and mention != who.mention:
            players += [mention]
    if len(players) > 0:
        await cli.send_message(channel, "%s %s want to play" % (who.mention, ", ".join(players)))
    else:
        if notify:
            await cli.send_message(channel, "%s Nobody wants to play. I'll notify you." % (who.mention))
        else:
            await cli.send_message(channel, "%s Nobody wants to play." % (who.mention))

    if notify:
        await asyncio.sleep((end-start).total_seconds())
        db.playwithme.remove({"_id": queueid})

@cli.event
async def on_message_delete(message):
    if message.channel.id in MIRROR_IGNORE:
        return
    msgs = []
    mirror = cli.get_channel(MODMIRROR)
    msgs.append("--- deleted message " + message.author.name + message.channel.mention)
    ms = []
    async for m in cli.logs_from(message.channel, limit=4, before=message):
        ms.append(m)
    for m in reversed(ms):
        msgs.append(m.author.name + m.channel.mention + ": " + m.content)
    msgs.append(" > " + message.author.name + message.channel.mention + " ~~" + message.content + "~~")
    async for m in cli.logs_from(message.channel, limit=2, after=message):
        msgs.append(m.author.name + m.channel.mention + ": " + m.contet)
    msgs.append("---")
    text = "\n".join(msgs)
    await cli.send_message(mirror, text)

@cli.event
async def on_message_edit(before, message):
    if message.channel.id in MIRROR_IGNORE:
        return
    if difflib.SequenceMatcher(None, before.content, message.content).ratio() > 0.9:
        return
    msgs = []
    mirror = cli.get_channel(MODMIRROR)
    msgs.append("--- edited message " + message.author.name + message.channel.mention)
    ms = []
    async for m in cli.logs_from(message.channel, limit=4, before=message):
        ms.append(m)
    for m in reversed(ms):
        msgs.append(m.author.name + m.channel.mention + ": " + m.content)
    msgs.append(" > " + message.author.name + message.channel.mention + " ~~" + before.content + "~~ " + message.content)
    async for m in cli.logs_from(message.channel, limit=2, after=message):
        msgs.append(m.author.name + m.channel.mention + ": " + m.contet)
    msgs.append("---")
    text = "\n".join(msgs)
    await cli.send_message(mirror, text)

@cli.event
async def on_message(message):
    msg = message.content.lower()
    if msg.startswith("?ping"):
        await cli.send_message(message.channel, "Pong!")

    if msg.startswith("?about"):
        await cli.send_message(message.channel, "Vainglory Discord bot " + VERSION + " written & hosted by shutterfly")

    if msg.startswith("?help"):
        await cli.send_message(message.channel, "Commands: ?play, ?help, ?ping, ?about")
        await cli.send_message(message.channel, "'?play' or 'play with me when how long' to find teammates, " +
                               "'dont play with me' to cancel.")

    if msg.startswith("play with me") or msg.startswith("who can play") or msg.startswith("?play"):
        if msg.startswith("play with me") or msg.startswith("?play"):
            if msg.startswith("play with me"):
                when = message.content[len("play with me"):]
            else:
                when = message.content[len("?play"):]
            notify = True
        else:
            when = message.content[len("who can play"):]
            notify = False
        await search_teammates(message.server, message.channel, message.author, when, notify)

    if msg.startswith("don't play with me") or msg.startswith("dont play with me"):
        db.playwithme.remove({"player": message.author.id})
        await cli.send_message(message.channel, "%s: Canceled all notifications." % (message.author.mention))

if __name__ == '__main__':
    logging.basicConfig()
    log = logging.getLogger()
    log.setLevel(logging.INFO)
    cli.run(TOKEN)