feat(api): split api into multiple apps (#1626)

Fixes #1622

- split the api into 4 apps: core, history, schedule, storage
- exploded the settings into testing/prod

api/libretime_api/schedule/views/schedule.py

@@ -0,0 +1,41 @@
+from django.db.models import F
+from drf_spectacular.utils import OpenApiParameter, extend_schema, extend_schema_view
+from rest_framework import viewsets
+
+from ..._constants import FILTER_NUMERICAL_LOOKUPS
+from ..models import Schedule
+from ..serializers import ScheduleSerializer
+
+
+@extend_schema_view(
+    list=extend_schema(
+        parameters=[
+            OpenApiParameter(
+                name="is_valid",
+                description="Filter on valid instances",
+                required=False,
+                type=bool,
+            ),
+        ]
+    )
+)
+class ScheduleViewSet(viewsets.ModelViewSet):
+    queryset = Schedule.objects.all()
+    serializer_class = ScheduleSerializer
+    filter_fields = {
+        "starts": FILTER_NUMERICAL_LOOKUPS,
+        "ends": FILTER_NUMERICAL_LOOKUPS,
+        "playout_status": FILTER_NUMERICAL_LOOKUPS,
+        "broadcasted": FILTER_NUMERICAL_LOOKUPS,
+    }
+    model_permission_name = "schedule"
+
+    def get_queryset(self):
+        filter_valid = self.request.query_params.get("is_valid")
+        if filter_valid is None:
+            return self.queryset.all()
+        filter_valid = filter_valid.strip().lower() in ("true", "yes", "1")
+        if filter_valid:
+            return self.queryset.filter(starts__lt=F("instance__ends"))
+        else:
+            return self.queryset.filter(starts__gte=F("instance__ends"))