Better date parsing to be future-only

jarvis/cogs/remindme.py

@@ -2,10 +2,12 @@
 import asyncio
 import logging
 import re
+from datetime import datetime
 from typing import List
 
 from bson import ObjectId
 from dateparser import parse
+from dateparser_data.settings import default_parsers
 from dis_snek import InteractionContext, Scale, Snake
 from dis_snek.client.utils.misc_utils import get
 from dis_snek.models.discord.channel import GuildChannel
@@ -96,12 +98,27 @@ class RemindmeCog(Scale):
             await response.send("Hey, you should probably make this readable", ephemeral=True)
             return
 
-        settings = {
+        base_settings = {
             "PREFER_DATES_FROM": "future",
             "TIMEZONE": "UTC",
             "RETURN_AS_TIMEZONE_AWARE": False,
         }
-        remind_at = parse(delay, settings=settings)
+        rt_settings = base_settings.copy()
+        rt_settings["PARSERS"] = [
+            x for x in default_parsers if x not in ["absolute-time", "timestamp"]
+        ]
+
+        rt_remind_at = parse(delay, settings=rt_settings)
+
+        at_settings = base_settings.copy()
+        at_settings["PARSERS"] = [x for x in default_parsers if x != "relative-time"]
+        at_remind_at = parse(delay, settings=at_settings)
+
+        if rt_remind_at and at_remind_at:
+            remind_at = max(rt_remind_at, at_remind_at)
+        else:
+            remind_at = rt_remind_at or at_remind_at
+
         if not remind_at:
             self.logger.debug(f"Failed to parse delay: {delay}")
             await response.send(
@@ -109,6 +126,15 @@ class RemindmeCog(Scale):
             )
             return
 
+        if remind_at < datetime.utcnow():
+            await response.send(
+                f"`{delay}` is in the past. Past reminders aren't allowed", ephemeral=True
+            )
+            return
+
+        elif remind_at < datetime.utcnow():
+            pass
+
         r = Reminder(
             user=ctx.author.id,
             channel=ctx.channel.id,