inventory entry search & filter - distibution data in inventory rntry

apps/warehouse/services/search.py

@@ -0,0 +1,39 @@
+from django.db.models import Q
+from apps.warehouse.models import InventoryEntry
+from django.db.models.functions import TruncDate
+
+
+class InventoryEntrySearch:
+    def __init__(self, query: str = None, start_date: str = None, end_date: str = None):
+        self.query = (query or '').strip()
+        self.start_date = start_date
+        self.end_date = end_date
+
+    def search(self):
+        """ multi term search & filter by date range """
+
+        queryset = InventoryEntry.objects.all()
+
+        if self.start_date or self.end_date:
+            queryset = queryset.annotate(date_only=TruncDate('create_date'))
+            if self.start_date:
+                queryset = queryset.filter(date_only__gte=self.start_date)
+            if self.end_date:
+                queryset = queryset.filter(date_only__lte=self.end_date)
+
+        # convert string to list of words
+        if self.query:
+            keywords = [word.strip() for word in self.query.split(',') if word.strip()]
+            if keywords:
+                combined_q = Q()
+                for keyword in keywords:
+                    combined_q |= Q(distribution__distribution_id__icontains=keyword)
+                    combined_q |= Q(organization__name__icontains=keyword)
+                    combined_q |= Q(weight__icontains=keyword)
+                    combined_q |= Q(balance__icontains=keyword)
+                    combined_q |= Q(lading_number__icontains=keyword)
+                    combined_q |= Q(is_confirmed__icontains=keyword)
+
+                queryset = queryset.filter(combined_q)
+
+        return queryset.distinct()