Add slash command for schedule & fix broken schedule

cogs/slash/school_slash.py

@@ -1,8 +1,12 @@
 from discord.ext import commands
 from dislash import SlashInteraction, slash_command, Option, OptionType
 
+from data import schedule
 from data.embeds.food import Menu
 from data.embeds.deadlines import Deadlines
+from functions import les, config
+from functions.stringFormatters import capitalize
+from functions.timeFormatters import skip_weekends
 from startup.didier import Didier
 
 
@@ -30,6 +34,43 @@ class SchoolSlash(commands.Cog):
         embed = Deadlines().to_embed()
         await interaction.reply(embed=embed)
 
+    @slash_command(
+        name="les",
+        description="Lessenrooster voor [Dag] (default vandaag)",
+        options=[
+            Option(
+                "dag",
+                description="dag",
+                type=OptionType.STRING,
+                required=False
+            )
+        ]
+    )
+    async def _schedule_slash(self, interaction: SlashInteraction, day: str = None):
+        """It's late and I really don't want to refactor the original right now"""
+        if day is not None:
+            day = day.lower()
+
+        date = les.find_target_date(day)
+
+        # Person explicitly requested a weekend-day
+        if day is not None and day.lower() in ("morgen", "overmorgen") and date.weekday() > 4:
+            return await interaction.reply(f"{capitalize(day)} is het weekend.", ephemeral=True)
+
+        date = skip_weekends(date)
+
+        s = schedule.Schedule(date, int(config.get("year")), int(config.get("semester")), day is not None)
+
+        if s.semester_over:
+            return await interaction.reply("Het semester is afgelopen.", ephemeral=True)
+
+        # DM only shows user's own minor
+        if interaction.guild is None:
+            minor_roles = [*schedule.find_minor(self.client, interaction.author.id)]
+            return await interaction.reply(embed=s.create_schedule(minor_roles=minor_roles).to_embed())
+
+        return await interaction.reply(embed=s.create_schedule().to_embed())
+
 
 def setup(client: Didier):
     client.add_cog(SchoolSlash(client))