feat: api upcoming and overdued loans

api/urls.py

@@ -12,6 +12,8 @@ from api.views import (
     LoginAsMember,
     LogoutAsMember,
     ChangePasswordAsMember,
+    OverduedBookLoanViewSet,
+    UpComingBookLoanViewSet,
 )
 
 router = routers.DefaultRouter()
@@ -19,7 +21,13 @@ router.register(r"users", UserViewSet, basename="users")
 router.register(r"books", BookViewSet, basename="books")
 router.register(r"members", MemberViewSet, basename="members")
 router.register(r"librarians", LibrarianViewSet, basename="librarians")
-router.register(r"book_loans", BookLoanViewSet, basename="book_loans")
+router.register(r"book-loans", BookLoanViewSet, basename="book_loans")
+router.register(
+    r"overdued-loans", OverduedBookLoanViewSet, basename="book_loans_overdued"
+)
+router.register(
+    r"upcoming-loans", UpComingBookLoanViewSet, basename="book_loans_upcoming"
+)
 
 urlpatterns = [
     path("", include(router.urls)),

api/views.py

@@ -66,6 +66,26 @@ class BookLoanViewSet(viewsets.ModelViewSet):
     search_fields = filterset_fields
 
 
+class OverduedBookLoanViewSet(BookLoanViewSet):
+    now = datetime.now()
+    queryset = (
+        BookLoans.objects.all()
+        .filter(due_date__lte=now, return_date=None)
+        .order_by("created_at")
+    )
+
+
+class UpComingBookLoanViewSet(BookLoanViewSet):
+    now = datetime.now()
+    due_date_treshold = now.today() + timedelta(days=3)
+    queryset = (
+        BookLoans.objects.all()
+        .filter(due_date__lte=due_date_treshold, return_date=None)
+        .filter(due_date__gte=now.today())
+        .order_by("created_at")
+    )
+
+
 class LoginAsLibrarian(views.APIView):
 
     def post(self, request):