Improved some messages and prepared them for i18n

cogs/cog_unregister.py

@@ -0,0 +1,64 @@
+from bson.errors import InvalidId
+from discord import ApplicationContext, Cog, option, slash_command
+from discord.utils import basic_autocomplete
+
+from classes import PycordEvent, PycordGuild, PycordUser
+from classes.pycord_bot import PycordBot
+from modules.utils import autocomplete_user_registered_events, is_operation_confirmed
+
+
+class CogUnregister(Cog):
+    """Cog with the event unregistration command."""
+
+    def __init__(self, bot: PycordBot):
+        self.bot: PycordBot = bot
+
+    # TODO Introduce i18n
+    @slash_command(
+        name="unregister",
+        description="Leave the selected event",
+    )
+    @option(
+        "event",
+        description="Name of the event",
+        autocomplete=basic_autocomplete(autocomplete_user_registered_events),
+    )
+    @option("confirm", description="Confirmation of the operation", required=False)
+    async def command_unregister(self, ctx: ApplicationContext, event: str, confirm: bool = False) -> None:
+        if not (await is_operation_confirmed(ctx, confirm)):
+            return
+
+        guild: PycordGuild = await self.bot.find_guild(ctx.guild.id)
+
+        try:
+            pycord_event: PycordEvent = await self.bot.find_event(event_id=event)
+        except (InvalidId, RuntimeError):
+            # TODO Make a nice message
+            await ctx.respond("Event was not found.")
+            return
+
+        if not guild.is_configured():
+            await ctx.respond(self.bot._("guild_unconfigured", "messages", locale=ctx.locale))
+            return
+
+        user: PycordUser = await self.bot.find_user(ctx.author, ctx.guild)
+
+        if user.is_jailed:
+            # TODO Make a nice message
+            await ctx.respond("You are jailed and cannot interact with events. Please, contact the administrator.")
+            return
+
+        if pycord_event._id not in user.registered_event_ids:
+            # TODO Make a nice message
+            await ctx.respond("You are not registered for this event.")
+            return
+
+        await user.event_unregister(pycord_event._id, cache=self.bot.cache)
+
+        # TODO Text channel must be locked and updated
+
+        await ctx.respond("Ok.")
+
+
+def setup(bot: PycordBot) -> None:
+    bot.add_cog(CogUnregister(bot))