IMPORVE ONBOARDING STEPS

services/inventory/migrations/versions/20251108_1200_make_stock_fields_nullable.py

@@ -0,0 +1,84 @@
+"""make_stock_management_fields_nullable
+
+Revision ID: make_stock_fields_nullable
+Revises: add_local_production_support
+Create Date: 2025-11-08 12:00:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision = 'make_stock_fields_nullable'
+down_revision = 'add_local_production_support'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    """Make stock management fields nullable to simplify onboarding
+
+    These fields (low_stock_threshold, reorder_point, reorder_quantity) are now optional
+    during onboarding and can be configured later based on actual usage patterns.
+    """
+
+    # Make low_stock_threshold nullable
+    op.alter_column('ingredients', 'low_stock_threshold',
+                    existing_type=sa.Float(),
+                    nullable=True,
+                    existing_nullable=False)
+
+    # Make reorder_point nullable
+    op.alter_column('ingredients', 'reorder_point',
+                    existing_type=sa.Float(),
+                    nullable=True,
+                    existing_nullable=False)
+
+    # Make reorder_quantity nullable
+    op.alter_column('ingredients', 'reorder_quantity',
+                    existing_type=sa.Float(),
+                    nullable=True,
+                    existing_nullable=False)
+
+
+def downgrade() -> None:
+    """Revert stock management fields to NOT NULL
+
+    WARNING: This will fail if any records have NULL values in these fields.
+    You must set default values before running this downgrade.
+    """
+
+    # Set default values for any NULL records before making fields NOT NULL
+    op.execute("""
+        UPDATE ingredients
+        SET low_stock_threshold = 10.0
+        WHERE low_stock_threshold IS NULL
+    """)
+
+    op.execute("""
+        UPDATE ingredients
+        SET reorder_point = 20.0
+        WHERE reorder_point IS NULL
+    """)
+
+    op.execute("""
+        UPDATE ingredients
+        SET reorder_quantity = 50.0
+        WHERE reorder_quantity IS NULL
+    """)
+
+    # Make fields NOT NULL again
+    op.alter_column('ingredients', 'low_stock_threshold',
+                    existing_type=sa.Float(),
+                    nullable=False,
+                    existing_nullable=True)
+
+    op.alter_column('ingredients', 'reorder_point',
+                    existing_type=sa.Float(),
+                    nullable=False,
+                    existing_nullable=True)
+
+    op.alter_column('ingredients', 'reorder_quantity',
+                    existing_type=sa.Float(),
+                    nullable=False,
+                    existing_nullable=True)