try handmade pagination

app/dao/jobs_dao.py

@@ -6,6 +6,7 @@ from flask import current_app
 from sqlalchemy import and_, asc, desc, func, select
 
 from app import db
+from app.dao.pagination import Pagination
 from app.enums import JobStatus
 from app.models import (
     FactNotificationStatus,
@@ -65,10 +66,18 @@ def dao_get_jobs_by_service_id(
     if statuses is not None and statuses != [""]:
         query_filter.append(Job.job_status.in_(statuses))
 
-    stmt = select(*query_filter).order_by(
-        Job.processing_started.desc(),
-        Job.created_at.desc()).limit(page_size).offset(page)
-    return db.session.execute(stmt).scalars().all()
+    total_items = db.session.execute(
+        select(func.count()).select_from(*query_filter).scalar_one()
+    )
+
+    stmt = (
+        select(*query_filter)
+        .order_by(Job.processing_started.desc(), Job.created_at.desc())
+        .limit(page_size)
+        .offset(page)
+    )
+    items = db.session.execute(stmt).scalars().all()
+    return Pagination(items, page, page_size, total_items)
 
 
 def dao_get_scheduled_job_stats(

app/dao/pagination.py

@@ -0,0 +1,13 @@
+class Pagination:
+    def __init__(self, items, page, per_page, total):
+        self.items = items
+        self.page = page
+        self.per_page = per_page
+        self.total = total
+        self.pages = (total + per_page - 1) // per_page
+
+    def has_next(self):
+        return self.page < self.pages
+
+    def has_prev(self):
+        return self.page > 1