--- /dev/null
+-- @tag: delete_close_follow_ups_when_order_is_deleted_closed
+-- @description: Wiedervorlagen lößchen/schließen, wenn dazugehörige Belege gelöscht/geschlossen werden
+-- @depends: release_3_0_0
+
+ALTER TABLE follow_up_links DROP CONSTRAINT follow_up_links_follow_up_id_fkey;
+ALTER TABLE follow_up_links ADD FOREIGN KEY (follow_up_id) REFERENCES follow_ups (id) ON DELETE CASCADE;
+
+CREATE OR REPLACE FUNCTION follow_up_delete_notes_trigger()
+RETURNS TRIGGER AS $$
+ BEGIN
+ DELETE FROM notes
+ WHERE (trans_id = OLD.id)
+ AND (trans_module = 'fu');
+ RETURN OLD;
+ END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION follow_up_delete_when_oe_is_deleted_trigger()
+RETURNS TRIGGER AS $$
+ BEGIN
+ DELETE FROM follow_ups
+ WHERE id IN (
+ SELECT follow_up_id
+ FROM follow_up_links
+ WHERE (trans_id = OLD.id)
+ AND (trans_type IN ('sales_quotation', 'sales_order', 'sales_delivery_order', 'sales_invoice',
+ 'request_quotation', 'purchase_order', 'purchase_delivery_order', 'purchase_invoice'))
+ );
+
+ RETURN OLD;
+ END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION follow_up_delete_when_customer_vendor_is_deleted_trigger()
+RETURNS TRIGGER AS $$
+ BEGIN
+ DELETE FROM follow_ups
+ WHERE id IN (
+ SELECT follow_up_id
+ FROM follow_up_links
+ WHERE (trans_id = OLD.id)
+ AND (trans_type IN ('customer', 'vendor'))
+ );
+
+ DELETE FROM notes
+ WHERE (trans_id = OLD.id)
+ AND (trans_module = 'ct');
+
+ RETURN OLD;
+ END;
+$$ LANGUAGE plpgsql;
+
+-- ============================================================
+
+DROP TRIGGER IF EXISTS follow_up_delete_notes ON follow_ups;
+
+CREATE TRIGGER follow_up_delete_notes
+AFTER DELETE ON follow_ups
+FOR EACH ROW EXECUTE PROCEDURE follow_up_delete_notes_trigger();
+
+DROP TRIGGER IF EXISTS oe_before_delete_clear_follow_ups ON oe;
+
+CREATE TRIGGER oe_before_delete_clear_follow_ups
+BEFORE DELETE ON oe
+FOR EACH ROW EXECUTE PROCEDURE follow_up_delete_when_oe_is_deleted_trigger();
+
+DROP TRIGGER IF EXISTS customer_before_delete_clear_follow_ups ON customer;
+DROP TRIGGER IF EXISTS vendor_before_delete_clear_follow_ups ON vendor;
+
+CREATE TRIGGER customer_before_delete_clear_follow_ups
+AFTER DELETE ON customer
+FOR EACH ROW EXECUTE PROCEDURE follow_up_delete_when_customer_vendor_is_deleted_trigger();
+
+CREATE TRIGGER vendor_before_delete_clear_follow_ups
+AFTER DELETE ON vendor
+FOR EACH ROW EXECUTE PROCEDURE follow_up_delete_when_customer_vendor_is_deleted_trigger();
+
+-- ============================================================
+
+CREATE OR REPLACE FUNCTION follow_up_close_when_oe_closed_trigger()
+RETURNS TRIGGER AS $$
+ BEGIN
+ IF COALESCE(NEW.closed, FALSE) AND NOT COALESCE(OLD.closed, FALSE) THEN
+ UPDATE follow_ups
+ SET done = TRUE
+ WHERE id IN (
+ SELECT follow_up_id
+ FROM follow_up_links
+ WHERE (trans_id = NEW.id)
+ AND (trans_type IN ('sales_quotation', 'sales_order', 'sales_delivery_order',
+ 'request_quotation', 'purchase_order', 'purchase_delivery_order'))
+ );
+ END IF;
+
+ RETURN NEW;
+ END;
+$$ LANGUAGE plpgsql;
+
+DROP TRIGGER IF EXISTS oe_on_update_close_follow_up ON oe;
+
+CREATE TRIGGER oe_on_update_close_follow_up
+AFTER UPDATE ON oe
+FOR EACH ROW EXECUTE PROCEDURE follow_up_close_when_oe_closed_trigger();
+
+DROP TRIGGER IF EXISTS delivery_orders_on_update_close_follow_up ON delivery_orders;
+
+CREATE TRIGGER delivery_orders_on_update_close_follow_up
+AFTER UPDATE ON delivery_orders
+FOR EACH ROW EXECUTE PROCEDURE follow_up_close_when_oe_closed_trigger();