Merge pull request #4506 from Tecnativa/16.0-mig-sale_loyalty_delivery

[16.0][MIG] sale_loyalty_delivery: Migration to version 16.0

openupgrade_scripts/scripts/sale_loyalty_delivery/16.0.1.0/pre-migration.py

@@ -0,0 +1,38 @@
+# Copyright 2024 Tecnativa - Pilar Vargas
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+from openupgradelib import openupgrade
+
+_column_copy = {
+    "loyalty_reward": [
+        ("reward_type", None, None),
+    ],
+}
+
+
+def check_for_free_shipping_promotions(env):
+    """
+    Since the values of the selection reward_type field only change in the
+    sale_loyalty_delivery module, a copy of the column will only be made in case there
+    is a free delivery promotion. In case of such a promotion, a copy of the column will
+    be made to preserve the data and the relevant data will be modified.
+    """
+    env.cr.execute(
+        """
+        SELECT 1 FROM loyalty_reward WHERE reward_type = 'free_shipping'
+        """,
+    )
+    has_free_shipping = env.cr.rowcount
+    if has_free_shipping:
+        openupgrade.copy_columns(env.cr, _column_copy)
+        openupgrade.map_values(
+            env.cr,
+            openupgrade.get_legacy_name("reward_type"),
+            "reward_type",
+            [("free_shipping", "shipping")],
+            table="loyalty_reward",
+        )
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    check_for_free_shipping_promotions(env)