348 lines
10 KiB
Python
348 lines
10 KiB
Python
import json
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import logging
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from datetime import datetime, timedelta
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from functools import wraps
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from os import getenv, path
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from typing import Dict, Optional, Union
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from disnake import Asset, Client, Guild, Intents, Member, User
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from disnake.guild_scheduled_event import GuildScheduledEvent
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from dotenv import load_dotenv
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from ics import Calendar, ContentLine, Event
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from ics.alarm import DisplayAlarm
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from oauthlib.oauth2 import OAuth2Error
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from quart import Quart, redirect, render_template, request, session, url_for
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from requests_oauthlib import OAuth2Session # type: ignore
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from uvicorn.middleware.proxy_headers import ProxyHeadersMiddleware
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load_dotenv()
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DISCORD_TOKEN = getenv("DISCORD_TOKEN")
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OAUTH2_CLIENT_ID = getenv("OAUTH2_CLIENT_ID")
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OAUTH2_CLIENT_SECRET = getenv("OAUTH2_CLIENT_SECRET")
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if not DISCORD_TOKEN:
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raise Exception("Missing DISCORD_TOKEN")
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if not OAUTH2_CLIENT_ID:
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raise Exception("Missing OAUTH2_CLIENT_ID")
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if not OAUTH2_CLIENT_SECRET:
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raise Exception("Missing OAUTH2_CLIENT_SECRET")
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QUART_DEBUG = getenv("QUART_DEBUG", False)
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if QUART_DEBUG:
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logging.basicConfig(level=logging.DEBUG)
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API_BASE_URL = getenv("API_BASE_URL", "https://discordapp.com/api")
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AUTHORIZATION_BASE_URL = f"{API_BASE_URL}/oauth2/authorize"
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TOKEN_URL = f"{API_BASE_URL}/oauth2/token"
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CATALOG_CACHE = {}
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EVENTS_CACHE = {}
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class Discord(Client):
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async def on_ready(self):
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print(f"Logged on as {self.user}!", flush=True)
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for guild in self.guilds:
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for scheduled_event in guild.scheduled_events:
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EVENTS_CACHE[scheduled_event.id] = [
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member.id
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for member in await scheduled_event.fetch_users().flatten()
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]
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print("Events synchronised!", flush=True)
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async def on_guild_scheduled_event_subscribe(
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self, event: GuildScheduledEvent, user: Union[Member, User]
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):
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EVENTS_CACHE[event.id].append(user.id)
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async def on_guild_scheduled_event_unsubscribe(
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self, event: GuildScheduledEvent, user: Union[Member, User]
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):
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EVENTS_CACHE[event.id].remove(user.id)
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async def on_guild_scheduled_event_create(self, event: GuildScheduledEvent):
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EVENTS_CACHE[event.id] = [
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member.id for member in await event.fetch_users().flatten()
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]
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async def on_guild_scheduled_event_delete(self, event: GuildScheduledEvent):
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EVENTS_CACHE.pop(event.id)
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intents = Intents.default()
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intents.guild_scheduled_events = True
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intents.members = True
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client = Discord(intents=intents)
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app = Quart(__name__)
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app.config["SECRET_KEY"] = OAUTH2_CLIENT_SECRET
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app.config["EXPLAIN_TEMPLATE_LOADING"] = QUART_DEBUG
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app.asgi_app = ProxyHeadersMiddleware(app.asgi_app, "*") # type: ignore
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def get_guild_by_id(guild_id: str) -> Optional[Guild]:
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if guild_id:
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for guild in client.guilds:
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if str(guild.id) == guild_id or guild.vanity_url_code == guild_id:
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return guild
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return None
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@app.errorhandler(500)
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async def errorhandler(error: Exception):
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print(f"\33[31m{error}\33[m", flush=True)
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return await render_template("error.html.j2", error=str(error)), 500
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@app.errorhandler(404)
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async def not_found(error: Exception):
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return await render_template("error.html.j2", error=str(error)), 404
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def token_updater(token: str):
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session["oauth2_token"] = token
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def make_session(
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token: Optional[Dict[str, str]] = None, state: Optional[str] = None
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) -> OAuth2Session:
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return OAuth2Session(
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client_id=OAUTH2_CLIENT_ID,
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token=token,
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state=state,
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scope=["identify", "guilds"],
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redirect_uri=f"{request.host_url}callback",
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auto_refresh_kwargs={
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"client_id": OAUTH2_CLIENT_ID,
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"client_secret": OAUTH2_CLIENT_SECRET,
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},
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auto_refresh_url=TOKEN_URL,
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token_updater=token_updater,
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)
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def i18n(str: str) -> str:
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lang = request.accept_languages.best_match(["en", "fr"])
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if lang not in CATALOG_CACHE:
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catalog_file = f"{path.dirname(__file__)}/translations/{lang}.json"
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if path.exists(catalog_file):
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with open(catalog_file) as catalog_json:
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catalog = json.load(catalog_json)
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CATALOG_CACHE[lang] = catalog
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if lang in CATALOG_CACHE and str in CATALOG_CACHE[lang]:
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return CATALOG_CACHE[lang][str]
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return str
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def days_before_failure() -> int:
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nextYear = datetime.today().year + 5 - ((datetime.today().year + 5) % 5)
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nextDate = datetime(year=nextYear, month=6, day=3)
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nextDelta = nextDate - datetime.now()
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return nextDelta.days
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@app.context_processor
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def context_processor():
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return dict(
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_=i18n,
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client=client,
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days_before_failure=days_before_failure(),
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)
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def login_required(fn):
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@wraps(fn)
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async def wrapper(*args, **kwargs):
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if session.get("oauth2_token"):
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return await fn(*args, **kwargs)
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session["redirect_url"] = request.path
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return redirect(url_for(".login"))
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return wrapper
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@app.route("/")
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async def index():
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return await render_template("index.html.j2")
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@app.route("/login")
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async def login():
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discord = make_session()
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authorization_url, state = discord.authorization_url(AUTHORIZATION_BASE_URL)
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session["oauth2_state"] = state
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return redirect(authorization_url)
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@app.route("/callback")
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async def callback():
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request_values = await request.values
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if request_values.get("error"):
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return errorhandler(request_values.get("error"))
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try:
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discord = make_session(state=session.get("oauth2_state"))
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token = discord.fetch_token(
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TOKEN_URL,
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client_secret=OAUTH2_CLIENT_SECRET,
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authorization_response=request.url,
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)
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token_updater(token)
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except OAuth2Error as e:
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return errorhandler(e)
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return redirect(session.pop("redirect_url", url_for(".guilds")))
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@app.route("/guilds")
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@login_required
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async def guilds():
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guild = request.args.get("guild")
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if guild:
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return redirect(url_for(".subscribe", entity_id=guild))
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try:
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discord = make_session(token=session.get("oauth2_token"))
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user = discord.get(f"{API_BASE_URL}/users/@me").json()
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user_guilds = discord.get(f"{API_BASE_URL}/users/@me/guilds").json()
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except OAuth2Error:
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return redirect(url_for(".login"))
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common_guilds = []
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for bot_guild in client.guilds:
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for user_guild in user_guilds:
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if str(bot_guild.id) == user_guild["id"]:
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common_guilds.append(bot_guild)
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return await render_template(
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"guilds.html.j2",
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user=user,
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avatar=Asset._from_avatar(None, user["id"], user["avatar"]),
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common_guilds=common_guilds,
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)
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@app.route("/subscribe/<entity_id>")
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@login_required
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async def subscribe(entity_id: str):
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guild = get_guild_by_id(entity_id)
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if guild:
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try:
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discord = make_session(token=session.get("oauth2_token"))
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user_guilds = discord.get(f"{API_BASE_URL}/users/@me/guilds").json()
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except OAuth2Error:
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return redirect(url_for(".login"))
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if not any(str(guild.id) == user_guild["id"] for user_guild in user_guilds):
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return redirect(url_for(".login"))
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return await render_template(
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"subscribe.html.j2",
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avatar=guild.icon,
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entity_id=guild.vanity_url_code or guild.id,
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)
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try:
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user = await client.get_or_fetch_user(int(entity_id))
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except ValueError:
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return redirect(url_for(".login"))
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if user and str(user.id) == entity_id:
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return await render_template(
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"subscribe.html.j2", avatar=user.avatar, entity_id=user.id
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)
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return redirect(url_for(".login"))
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def make_event(scheduled_event: GuildScheduledEvent) -> Event:
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event = Event()
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event.summary = scheduled_event.name
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event.begin = scheduled_event.scheduled_start_time
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event.end = scheduled_event.scheduled_end_time
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event.duration = timedelta(hours=2)
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event.uid = str(scheduled_event.id)
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event.description = scheduled_event.description
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event.url = scheduled_event.url
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event.location = (
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scheduled_event.entity_metadata.location
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if scheduled_event.entity_metadata
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else None
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)
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alarm = DisplayAlarm()
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alarm.trigger = timedelta(hours=-1)
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event.alarms.append(alarm)
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return event
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@app.route("/<entity_id>.ics")
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async def ical(entity_id: str):
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guild = get_guild_by_id(entity_id)
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if guild:
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calendar = Calendar()
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calendar.extra.append(ContentLine(name="REFRESH-INTERVAL", value="PT1H"))
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calendar.extra.append(ContentLine(name="X-PUBLISHED-TTL", value="PT1H"))
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calendar.extra.append(ContentLine(name="NAME", value=guild.name))
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calendar.extra.append(ContentLine(name="X-WR-CALNAME", value=guild.name))
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if guild.description:
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calendar.extra.append(
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ContentLine(name="DESCRIPTION", value=guild.description)
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)
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calendar.extra.append(
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ContentLine(name="X-WR-CALDESC", value=guild.description)
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)
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for scheduled_event in guild.scheduled_events:
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event = make_event(scheduled_event)
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calendar.events.append(event)
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return calendar.serialize()
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try:
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user = await client.get_or_fetch_user(int(entity_id))
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except ValueError:
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return redirect(url_for(".login"))
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if user:
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calendar = Calendar()
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calendar.extra.append(ContentLine(name="REFRESH-INTERVAL", value="PT1H"))
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calendar.extra.append(ContentLine(name="X-PUBLISHED-TTL", value="PT1H"))
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calendar.extra.append(ContentLine(name="NAME", value=client.user.display_name))
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calendar.extra.append(
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ContentLine(name="X-WR-CALNAME", value=client.user.display_name)
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)
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for guild in client.guilds:
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for scheduled_event in guild.scheduled_events:
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if user.id in EVENTS_CACHE[scheduled_event.id]:
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event = make_event(scheduled_event)
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calendar.events.append(event)
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return calendar.serialize()
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return redirect(url_for(".login"))
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def run():
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client.loop.create_task(client.start(DISCORD_TOKEN))
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app.run("0.0.0.0", loop=client.loop)
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