feat(fallback): add bucket for last night shifts from 20:00 on

shiftregister/app/forms.py

@@ -26,7 +26,6 @@ class RegisterForm(forms.Form):
     name = forms.CharField(
         max_length=Helper.name.field.max_length, label="Name", widget=text_input()
     )
-    # actually verify phone number, lol
     phone = PhoneNumberField(
         max_length=Helper.phone.field.max_length,
         label="Handynummer für Benachrichtigungen",

shiftregister/fallback/admin.py

@@ -29,9 +29,9 @@ class FallbackAssignmentInline(admin.TabularInline):
 
 @admin.register(TeamMember)
 class TeamMemberAdmin(admin.ModelAdmin):
-    fields = ("id", "name", "url")
+    fields = ("id", "name", "comment", "url")
     readonly_fields = ("id", "url")
-    list_display = ("name", "shift_count")
+    list_display = ("name", "comment", "shift_count")
     ordering = ("name",)
     inlines = (FallbackAssignmentInline,)
     actions = (assign_random_shifts, clear_shifts)  # , reshuffle_shifts)

shiftregister/fallback/management/commands/createteammembers.py

@@ -0,0 +1,42 @@
+import sys
+
+from django.core.management.base import BaseCommand, CommandError
+
+from ...models import TeamMember
+
+
+class Command(BaseCommand):
+    help = "Import a list of team members, optionally including their affiliations (stored in the comment field)"
+
+    def add_arguments(self, parser):
+        parser.add_argument(
+            "-d",
+            "--delimiter",
+            default=":",
+            help="character separating name from affiliations",
+        )
+
+    def handle(self, *args, **options):
+        try:
+            self._handle(*args, **options)
+        except KeyboardInterrupt:
+            self.stderr.write()
+        except Exception as e:
+            raise CommandError(e)
+
+    def _handle(self, *args, **options):
+        team_members = []
+        for line in sys.stdin.readlines():
+            line = line.strip()
+            if line == "" or line.startswith("#"):
+                continue
+
+            match line.split(options["delimiter"], maxsplit=1):
+                case [name, affiliations]:
+                    team_members.append(
+                        TeamMember(name=name, comment=affiliations.strip())
+                    )
+                case [name]:
+                    team_members.append(TeamMember(name=name))
+
+        TeamMember.objects.bulk_create(team_members)

shiftregister/fallback/migrations/0007_teammember_comment.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.0.4 on 2024-05-19 21:22
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("fallback", "0006_fallbackassignment_was_full"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="teammember",
+            name="comment",
+            field=models.CharField(default="", max_length=100),
+        ),
+    ]

shiftregister/fallback/models.py

@@ -1,15 +1,15 @@
 import math
 import secrets
 from base64 import urlsafe_b64encode
+from datetime import datetime, time
 
 from django.db.models import Count, Exists, ExpressionWrapper, Max, OuterRef, Sum
 from django.db.models.fields import DateTimeField
 from django.db.models.lookups import LessThan
+from django.utils import timezone
 
 from shiftregister.importer.models import *
 
-night_shift_query = Q(start_at__hour__gte=21) | Q(start_at__hour__lte=10)
-
 
 def generate_id():
     return int.from_bytes(secrets.token_bytes(3), byteorder="big")
@@ -18,6 +18,7 @@ def generate_id():
 class TeamMember(models.Model):
     id = models.IntegerField(default=generate_id, editable=False, primary_key=True)
     name = models.CharField(max_length=100)
+    comment = models.CharField(max_length=100, default="")
     fallback_shifts = models.ManyToManyField(Shift, through="FallbackAssignment")
 
     def url(self):
@@ -31,14 +32,32 @@ class TeamMember(models.Model):
         )
 
     def assign_random_shifts(self):
+        needs_fallback = Q(deleted=False, calendar__needs_fallback=True)
+
+        current_tz = timezone.get_current_timezone()
+        # create a datetime combining the last date having fallback shifts
+        # after 20:00 with the time 20:00 in the current timezone
+        last_night = datetime.combine(
+            Event.objects.filter(needs_fallback, start_at__hour__gte=20)
+            .latest("start_at")
+            .start_at.astimezone(current_tz),
+            time(hour=20),
+            current_tz,
+        )
+
+        is_last_night = Q(start_at__gte=last_night)
+        is_night_shift = Q(start_at__hour__gte=21) | Q(start_at__hour__lte=10)
+
         if self.fallback_shifts.count() != 0:
             return
-        selector1 = (~night_shift_query) & Q(
-            deleted=False, calendar__needs_fallback=True
-        )
-        selector2 = night_shift_query & Q(deleted=False, calendar__needs_fallback=True)
-        self._assign_from_bucket(selector1)
-        self._assign_from_bucket(selector2)
+
+        day_shifts = ~is_night_shift & ~is_last_night & needs_fallback
+        night_shifts = is_night_shift & ~is_last_night & needs_fallback
+        shit_shifts = is_last_night & needs_fallback
+
+        self._assign_from_bucket(day_shifts)
+        self._assign_from_bucket(night_shifts)
+        self._assign_from_bucket(shit_shifts)
 
     def _assign_from_bucket(self, bucket_selector):
         free_bucket = (
@@ -165,7 +184,7 @@ class TeamMember(models.Model):
             assignment.delete()
 
     def __str__(self):
-        return f"{self.name}"
+        return f"{self.name}{f': {self.comment}' if self.comment else ''}"
 
 
 class FallbackAssignment(models.Model):