I have added a menu item in Reporting Tab in Manufacturing module. I have already written python code to create CSV file. How do I make it downloadable when I click the menu item in manufacturing module.

This is how I added the menu:

<record model="ir.actions.act_window" id="raw_material_planning">
    <field name="name">Raw Material Planning</field>
    <field name="res_model">gear.manufacturing</field>
    <field name="view_mode">calendar,tree,form</field>
  </record>
    
  <menuitem name="Raw Material Planning" parent="mrp.menu_mrp_reporting" id="menu_raw_material_planning"
      action="raw_material_planning"/>

I need some assistance