feat: add (incomplete) nix flake

dave.py isn't packaged yet. Will try to do this myself but dealing with
vcpkg is a bit annoying.

errornocord/utils/__init__.py

@@ -0,0 +1,28 @@
+from .common import LimitedSizeDict, filter_secrets, format_duration, surround
+from .discord import (
+    ChannelResponseWrapper,
+    MessageInteractionWrapper,
+    add_check_reaction,
+    channel_send,
+    cooldown,
+    invalid_user_handler,
+    load_opus,
+    reply,
+    snowflake_timestamp,
+)
+
+__all__ = [
+    "add_check_reaction",
+    "channel_send",
+    "ChannelResponseWrapper",
+    "cooldown",
+    "filter_secrets",
+    "format_duration",
+    "invalid_user_handler",
+    "LimitedSizeDict",
+    "load_opus",
+    "MessageInteractionWrapper",
+    "reply",
+    "snowflake_timestamp",
+    "surround",
+]

errornocord/utils/common.py

@@ -0,0 +1,64 @@
+from collections import OrderedDict
+
+from ..constants import SECRETS
+
+
+def surround(inner: str, outer="```") -> str:
+    return outer + str(inner) + outer
+
+
+def format_duration(duration: int, natural: bool = False, short: bool = False) -> str:
+    def format_plural(noun, count):
+        if short:
+            return noun[0]
+        return " " + (noun if count == 1 else noun + "s")
+
+    segments = []
+
+    weeks, duration = divmod(duration, 604800)
+    if weeks > 0:
+        segments.append(f"{weeks}{format_plural('week', weeks)}")
+
+    days, duration = divmod(duration, 86400)
+    if days > 0:
+        segments.append(f"{days}{format_plural('day', days)}")
+
+    hours, duration = divmod(duration, 3600)
+    if hours > 0:
+        segments.append(f"{hours}{format_plural('hour', hours)}")
+
+    minutes, duration = divmod(duration, 60)
+    if minutes > 0:
+        segments.append(f"{minutes}{format_plural('minute', minutes)}")
+
+    if duration > 0:
+        segments.append(f"{duration}{format_plural('second', duration)}")
+
+    separator = " " if short else ", "
+    if not natural or len(segments) <= 1:
+        return separator.join(segments)
+    return separator.join(segments[:-1]) + f" and {segments[-1]}"
+
+
+def filter_secrets(text: str, secrets=SECRETS) -> str:
+    for secret_name, secret in secrets.items():
+        if not secret:
+            continue
+        text = text.replace(secret, f"<{secret_name}>")
+    return text
+
+
+class LimitedSizeDict(OrderedDict):
+    def __init__(self, *args, **kwargs):
+        self.size_limit = kwargs.pop("size_limit", 100)
+        super().__init__(*args, **kwargs)
+        self._check_size_limit()
+
+    def __setitem__(self, key, value):
+        super().__setitem__(key, value)
+        self._check_size_limit()
+
+    def _check_size_limit(self):
+        if self.size_limit is not None:
+            while len(self) > self.size_limit:
+                self.popitem(last=False)

errornocord/utils/discord.py

@@ -0,0 +1,115 @@
+import ctypes
+import time
+from logging import debug, error
+
+import disnake
+
+from .. import commands
+from ..constants import OWNERS
+from ..state import command_cooldowns, message_responses
+
+
+def cooldown(message, cooldown_time: int):
+    if message.author.id in OWNERS:
+        return
+
+    possible_commands = commands.match(message.content)
+    if not possible_commands or len(possible_commands) > 1:
+        return
+    command = possible_commands[0]
+
+    end_time = time.time() + cooldown_time
+    if message.author.id in command_cooldowns:
+        command_cooldowns[message.author.id][command] = end_time
+    else:
+        command_cooldowns[message.author.id] = {command: end_time}
+
+
+async def reply(message, *args, **kwargs):
+    if message.id in message_responses:
+        if len(args) == 0:
+            kwargs["content"] = None
+        elif len(kwargs) == 0:
+            kwargs["embeds"] = []
+
+        try:
+            await message_responses[message.id].edit(
+                *args,
+                **kwargs,
+                allowed_mentions=disnake.AllowedMentions.none(),
+            )
+            return
+        except Exception:
+            pass
+
+    try:
+        response = await message.reply(
+            *args,
+            **kwargs,
+            allowed_mentions=disnake.AllowedMentions.none(),
+        )
+    except Exception:
+        response = await channel_send(message, *args, **kwargs)
+    message_responses[message.id] = response
+    return message_responses[message.id]
+
+
+async def channel_send(message, *args, **kwargs):
+    await message.channel.send(
+        *args,
+        **kwargs,
+        allowed_mentions=disnake.AllowedMentions.none(),
+    )
+
+
+def load_opus():
+    path = ctypes.util._findLib_ld("opus")
+    try:
+        disnake.opus.load_opus(path)
+        debug(f"successfully loaded opus from {path}")
+        return
+    except Exception as e:
+        error(f"failed to load opus from {path}: {e}")
+    raise Exception("could not locate working opus library")
+
+
+def snowflake_timestamp(snowflake) -> int:
+    return round(((snowflake >> 22) + 1420070400000) / 1000)
+
+
+async def add_check_reaction(message):
+    await message.add_reaction("✅")
+
+
+async def invalid_user_handler(interaction):
+    await interaction.response.send_message(
+        "you are not the intended receiver of this message!",
+        ephemeral=True,
+    )
+
+
+class ChannelResponseWrapper:
+    def __init__(self, message):
+        self.message = message
+        self.sent_message = None
+
+    async def send_message(self, **kwargs):
+        kwargs.pop("ephemeral", None)
+        self.sent_message = await reply(self.message, **kwargs)
+
+    async def edit_message(self, content=None, embed=None, view=None):
+        if self.sent_message:
+            content = content or self.sent_message.content
+            if not embed and len(self.sent_message.embeds) > 0:
+                embed = self.sent_message.embeds[0]
+            await self.sent_message.edit(content=content, embed=embed, view=view)
+
+
+class MessageInteractionWrapper:
+    def __init__(self, message):
+        self.message = message
+        self.author = message.author
+        self.response = ChannelResponseWrapper(message)
+
+    async def edit_original_message(self, content=None, embed=None, view=None):
+        await self.response.edit_message(content=content, embed=embed, view=view)