Convert into MVC and optimize the code

app/Controllers/dropdown_controller.py

@@ -0,0 +1,80 @@
+from flask import request, jsonify
+from flask_login import current_user
+from app import db
+from app.models import Task, WorkDetail
+from app.service.logger import log_activity
+
+
+def get_blocks_by_district_controller():
+    district = request.args.get('district')
+
+    if not district:
+        return jsonify({'blocks': []})
+
+    blocks = (
+        db.session.query(Task.block_name)
+        .filter(Task.district == district)
+        .distinct()
+        .all()
+    )
+
+    return jsonify({'blocks': [b[0] for b in blocks]})
+
+
+def get_tasks_by_block_controller():
+    block = request.args.get('block')
+
+    if not block:
+        return jsonify({'tasks': []})
+
+    tasks = (
+        db.session.query(Task.task_name)
+        .filter(Task.block_name == block)
+        .distinct()
+        .all()
+    )
+
+    task_list = [
+        task[0].strip()
+        .replace(",", "")
+        .replace("(", "")
+        .replace(")", "")
+        .replace(".", "")
+        .replace("&", "")
+        .replace("\n", "")
+        for task in tasks
+    ]
+
+    log_activity(
+        current_user.username,
+        "Fetch Tasks",
+        f"Fetched tasks for block {block}"
+    )
+
+    return jsonify({'tasks': task_list})
+
+
+def get_villages_for_block(block_name):
+    villages = (
+        db.session.query(WorkDetail.name_of_village)
+        .filter(WorkDetail.block == block_name)
+        .distinct()
+        .order_by(WorkDetail.name_of_village)
+        .all()
+    )
+
+    return [v[0] for v in villages if v[0]]
+
+
+def get_villages_by_block_controller():
+    block = request.args.get('block')
+
+    villages = get_villages_for_block(block)
+
+    log_activity(
+        current_user.username,
+        "Fetch Villages",
+        f"Fetched villages for block {block}"
+    )
+
+    return jsonify({'villages': villages})