add static typecheck system to poetry

.github/workflows/typecheck.yml

@@ -0,0 +1,33 @@
+name: Static Type Check
+
+on: [pull_request]
+
+env: 
+  PYTHON_VERSION: '3.10'
+  POETRY_VERSION: '1.4.2'
+
+jobs:
+  types:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+        with:
+          version: ${{ env.POETRY_VERSION }}
+          virtualenvs-create: true
+          virtualenvs-in-project: true
+          installer-parallel: true
+
+      - name: Install dependencies
+        run: poetry install --no-interaction
+
+      - name: Type with pyright
+        run: poetry run pyright uqcsbot

pyproject.toml

@@ -27,7 +27,33 @@ pytest = "^7.3.1"
 pytest-datafiles = "^3.0.0"
 python-dotenv = "^1.0.0"
 black = "^23.3.0"
+pyright = "^1.1.316"
+types-requests = "^2.30.0.0"
+types-beautifulsoup4 = "^4.12.0.4"
+types-python-dateutil = "^2.8.19.12"
+types-pytz = "^2023.3.0.0"
 
 [build-system]
 requires = ["poetry-core>=1.3.0"]
 build-backend = "poetry.core.masonry.api"
+
+[tool.pyright]
+strict = ["**"]
+exclude = [
+    "**/advent.py",
+    "**/bot.py",
+    "**/error_handler.py",
+    "**/events.py",
+    "**/gaming.py",
+    "**/haiku.py",
+    "**/member_counter.py",
+    "**/remindme.py",
+    "**/snailrace.py",
+    "**/starboard.py",
+    "**/uptime.py",
+    "**/whatsdue.py",
+    "**/working_on.py",
+    "**/utils/command_utils.py",
+    "**/utils/snailrace_utils.py",
+    "**/utils/uq_course_utils.py"
+]

uqcsbot/__main__.py

@@ -22,12 +22,10 @@ async def main():
     intents.members = True
     intents.message_content = True
 
-    DISCORD_TOKEN = os.environ.get("DISCORD_BOT_TOKEN")
-
-    DATABASE_URI = os.environ.get("POSTGRES_URI_BOT")
-    if DATABASE_URI == None:
-        # If the database env variable is not defined, default to SQLite in memory db.
-        DATABASE_URI = "sqlite:///"
+    if (discord_token := os.environ.get("DISCORD_BOT_TOKEN")) is None:
+        raise RuntimeError("Bot token is not set!")
+    if (database_uri := os.environ.get("POSTGRES_URI_BOT")) is None:
+        database_uri = "sqlite:///"
 
     # If you need to override the allowed mentions that can be done on a per message basis, but default to off
     allowed_mentions = discord.AllowedMentions.none()
@@ -72,11 +70,11 @@ async def main():
     for cog in cogs:
         await bot.load_extension(f"uqcsbot.{cog}")
 
-    db_engine = create_engine(DATABASE_URI, echo=True)
+    db_engine = create_engine(database_uri, echo=True)
     Base.metadata.create_all(db_engine)
     bot.set_db_engine(db_engine)
 
-    await bot.start(DISCORD_TOKEN)
+    await bot.start(discord_token)
 
 
 asyncio.run(main())

uqcsbot/advent.py

@@ -15,17 +15,17 @@
 from uqcsbot.bot import UQCSBot
 from uqcsbot.models import AOCWinner
 from uqcsbot.utils.command_utils import loading_status
+from uqcsbot.utils.err_log_utils import FatalErrorWithLog
 
 # Leaderboard API URL with placeholders for year and code.
 LEADERBOARD_URL = "https://adventofcode.com/{year}/leaderboard/private/view/{code}.json"
-# Session cookie (will expire in approx 30 days).
-# See: https://github.com/UQComputingSociety/uqcsbot-discord/wiki/Tokens-and-Environment-Variables#aoc_session_id
-SESSION_ID = os.environ.get("AOC_SESSION_ID")
+
 # UQCS leaderboard ID.
 UQCS_LEADERBOARD = 989288
 
 # Days in Advent of Code. List of numbers 1 to 25.
 ADVENT_DAYS = list(range(1, 25 + 1))
+
 # Puzzles are unlocked at midnight EST.
 EST_TIMEZONE = timezone(timedelta(hours=-5))
 
@@ -159,6 +159,10 @@ def sort_key(sort: SortMode) -> Callable[["Member"], Any]:
 class Advent(commands.Cog):
     CHANNEL_NAME = "contests"
 
+    # Session cookie (will expire in approx 30 days).
+    # See: https://github.com/UQComputingSociety/uqcsbot-discord/wiki/Tokens-and-Environment-Variables#aoc_session_id
+    SESSION_ID: str = ""
+
     def __init__(self, bot: UQCSBot):
         self.bot = bot
         self.bot.schedule_task(
@@ -179,6 +183,13 @@ def __init__(self, bot: UQCSBot):
             month=12,
         )
 
+        if os.environ.get("AOC_SESSION_ID") is not None:
+            SESSION_ID = os.environ.get("AOC_SESSION_ID")
+        else:
+            raise FatalErrorWithLog(
+                bot, "Unable to find AoC session ID. Not loading advent cog."
+            )
+
     def star_char(self, num_stars: int):
         """
         Given a number of stars (0, 1, or 2), returns its leaderboard
@@ -334,7 +345,7 @@ def parse_arguments(self, argv: List[str]) -> Namespace:
         def usage_error(message, *args, **kwargs):
             raise ValueError(message)
 
-        parser.error = usage_error  # type: ignore
+        parser.error = usage_error
 
         args = parser.parse_args(argv)
 
@@ -343,14 +354,14 @@ def usage_error(message, *args, **kwargs):
 
         return args
 
-    def get_leaderboard(self, year: int, code: int) -> Dict:
+    def get_leaderboard(self, year: int, code: int) -> Optional[Dict]:
         """
         Returns a json dump of the leaderboard
         """
         try:
             response = requests.get(
                 LEADERBOARD_URL.format(year=year, code=code),
-                cookies={"session": SESSION_ID},
+                cookies={"session": self.SESSION_ID},
             )
             return response.json()
         except ValueError as exception:  # json.JSONDecodeError
@@ -543,4 +554,5 @@ async def advent_winners(
 
 async def setup(bot: UQCSBot):
     cog = Advent(bot)
+
     await bot.add_cog(cog)

uqcsbot/basic.py

@@ -40,9 +40,10 @@ async def on_ready(self):
         )
 
     @commands.Cog.listener()
-    async def on_member_join(self, member):
+    async def on_member_join(self, member: discord.Member):
         """Member join listener"""
-        channel = member.guild.system_channel
+        if (channel := member.guild.system_channel) is None:
+            return
         # On user joining, a system join message will appear in the system channel
         # This should prevent the bot waving on a user message when #general is busy
         async for msg in channel.history(limit=5):
@@ -83,7 +84,7 @@ def format_repo_message(self, repos: List[str]) -> str:
         :param repos: list of strings of repo names
         :return: a single string with a formatted message containing repo info for the given names
         """
-        repo_strings = []
+        repo_strings: List[str] = []
         for potential_repo in repos:
             repo_strings.append(self.find_repo(potential_repo))
         return "".join(repo_strings)
@@ -98,8 +99,7 @@ async def repo_list(self, interaction: discord.Interaction):
             + self.format_repo_message(list(REPOS.keys()))
         )
 
-    @repo_group.command(name="find")
-    @app_commands.describe(name="Name of the repo to find")
+    @repo_group.command(name="find", description="Name of the repo to find")
     async def repo_find(self, interaction: discord.Interaction, name: str):
         """Finds a specific UQCS GitHub repository"""
         await interaction.response.send_message(

uqcsbot/bot.py

@@ -1,26 +1,41 @@
 import logging
 import os
-from typing import List
+from typing import List, Optional, Tuple, Any, Callable, Coroutine
+
 import discord
 from discord.ext import commands
 from apscheduler.schedulers.asyncio import AsyncIOScheduler
 from sqlalchemy.engine import Engine
 from sqlalchemy.orm import sessionmaker
 from datetime import datetime
 from aiohttp import web
+from pytz import timezone
 
-ADMIN_ALERTS = "admin-alerts"
+"""
+TODO: TYPE ISSUES IN THIS FILE:
+    - apscheduler has no stubs. They're planned for the 4.0 release... in the future.
+    - aiohttp handler witchery
+"""
 
 
 class UQCSBot(commands.Bot):
     """An extended bot client to add extra functionality."""
 
-    def __init__(self, *args, **kwargs):
+    def __init__(self, *args: Any, **kwargs: Any):
         super().__init__(*args, **kwargs)
         self._scheduler = AsyncIOScheduler()
         self.start_time = datetime.now()
 
-    def schedule_task(self, func, *args, **kwargs):
+        # Important channel names & constants go here
+        self.ADMIN_ALERTS_CNAME = "admin-alerts"
+        self.GENERAL_CNAME = "general"
+        self.BOT_TIMEZONE = timezone("Australia/Brisbane")
+
+        self.uqcs_server: discord.Guild
+
+    def schedule_task(
+        self, func: Callable[..., Coroutine[Any, Any, None]], *args: Any, **kwargs: Any
+    ):
         """Schedule a function to be run at a later time. A wrapper for apscheduler add_job."""
         self._scheduler.add_job(func, *args, **kwargs)
 
@@ -35,15 +50,17 @@ async def admin_alert(
         self,
         title: str,
         colour: discord.Colour,
-        description: str = None,
-        footer: str = None,
-        fields: List[tuple] = None,
+        description: Optional[str] = None,
+        footer: Optional[str] = None,
+        fields: Optional[List[Tuple[str, str]]] = None,
         fields_inline: bool = True,
     ):
         """Sends an alert to the admin channel for logging."""
-        admin_channel = discord.utils.get(self.uqcs_server.channels, name=ADMIN_ALERTS)
+        admin_channel = discord.utils.get(
+            self.uqcs_server.channels, name=self.ADMIN_ALERTS_CNAME
+        )
 
-        if admin_channel == None:
+        if admin_channel == None or not isinstance(admin_channel, discord.TextChannel):
             return
 
         admin_message = discord.Embed(title=title, colour=colour)
@@ -75,12 +92,22 @@ def handle(request):
     async def on_ready(self):
         """Once the bot is loaded and has connected, run these commands first."""
         self._scheduler.start()
+
+        if (user := self.user) is None:
+            raise RuntimeError("Ready... but not logged in!")
+        self.safe_user = user
+
         logging.info(
-            f'Bot online and logged in: [Name="{self.user.name}", ID={self.user.id}]'
+            f'Bot online and logged in: [Name="{self.safe_user.id}", ID={self.safe_user.id}]'
         )
 
         # Get the UQCS server object and store it centrally
-        self.uqcs_server = self.get_guild(int(os.environ.get("SERVER_ID")))
+        if (server_id := os.environ.get("SERVER_ID")) is None:
+            raise RuntimeError("Server ID is not set!")
+        if (server := self.get_guild(int(server_id))) is None:
+            raise RuntimeError("Unable to find server with id {server_id}")
+        self.uqcs_server: discord.Guild = server
+
         logging.info(f"Active in the {self.uqcs_server} server.")
 
         # Sync the app comamand tree with servers.

uqcsbot/cat.py

@@ -27,7 +27,7 @@ async def cat(self, interaction: discord.Interaction):
         order = deque([pink, red, yellow, green, cyan, blue])
         # randomly shifts starting colout
         shift = randrange(0, 5)
-        for i in range(shift):
+        for _ in range(shift):
             order.append(order.popleft())
 
         cat = "\n".join(

uqcsbot/cowsay.py

@@ -140,7 +140,7 @@ def draw_cow(
         """
 
         # Set the tongue if the cow is dead or if the tongue is set to True.
-        tongue = "U" if tongue or mood == "Dead" else " "
+        tongue_out = "U" if tongue or mood == "Dead" else " "
 
         # Set the bubble connection based on whether the cow is thinking or
         # speaking.
@@ -155,9 +155,9 @@ def draw_cow(
 
         # Draw the cow.
         cow = f"        {bubble_connect}   ^__^\n"
-        cow += f"         {bubble_connect}  ({cow_eyes})\_______\n"
-        cow += f"            (__)\       )\/\ \n"
-        cow += f"             {tongue}  ||----w |\n"
+        cow += f"         {bubble_connect}  ({cow_eyes})\\_______\n"
+        cow += f"            (__)\\       )\\/\\ \n"
+        cow += f"             {tongue_out}  ||----w |\n"
         cow += f"                ||     ||\n"
         return cow
 
@@ -186,10 +186,10 @@ def draw_tux(
         tux += f"        .--. \n"
         tux += f"       |{tux_eyes} | \n"
         tux += f"       |:_/ | \n"
-        tux += f"      //   \ \ \n"
+        tux += f"      //   \\ \\ \n"
         tux += f"     (|     | ) \n"
-        tux += f"    /'\_   _/`\ \n"
-        tux += f"    \___)=(___/ \n"
+        tux += f"    /'\\_   _/`\\ \n"
+        tux += f"    \\___)=(___/ \n"
         return tux
 
     @staticmethod
@@ -215,7 +215,7 @@ def sanitise_emotes(message: str) -> str:
         """
 
         # Regex to match emotes.
-        emotes: List[str] = re.findall("<a?:\w+:\d+>", message)
+        emotes: List[str] = re.findall(r"<a?:\w+:\d+>", message)
 
         # Replace each emote with its name.
         for emote in emotes:
@@ -242,7 +242,7 @@ def word_wrap(message: str, wrap: int) -> List[str]:
             # As requested by the audience, you can manually break lines by
             # adding "\n" anywhere in the message and it will be respected.
             if "\\n" in word:
-                parts: str = word.split("\\n", 1)
+                parts = word.split("\\n", 1)
 
                 # The `\n` is by itself, so start a new line.
                 if parts[0] == "" and parts[1] == "":
@@ -271,7 +271,7 @@ def word_wrap(message: str, wrap: int) -> List[str]:
             # the list of words to be processed.
             if len(word) > wrap:
                 # Cut the word to the remaining space on the line.
-                cut_word: str = word[: (wrap - len(line))]
+                cut_word = word[: (wrap - len(line))]
 
                 # Add the rest of the word to the list of words to be processed.
                 words.insert(index, word[len(cut_word) :])

uqcsbot/error_handler.py

@@ -2,6 +2,10 @@
 from discord.ext.commands.errors import MissingRequiredArgument
 import logging
 
+"""
+TODO: this is bundled with advent.py and should be removed.
+"""
+
 
 class ErrorHandler(commands.Cog):
     @commands.Cog.listener()