UPDATE custom_attribute_definitions
SET
  attribute_display_name = 'Custom Priority',
  description = 'Custom ticket priority',
  attribute_values = '["Low", "Medium", "High"]'::jsonb,
  updated_at = CURRENT_TIMESTAMP
WHERE attribute_name = 'custom_priority'
  AND attribute_model = 'conversation_attribute'
  AND attribute_display_name = '自定义优先级'
  AND description = '自定义工单优先级'
  AND attribute_values = '["低", "中", "高"]'::jsonb;

UPDATE conversations
SET
  custom_attributes = jsonb_set(
    custom_attributes,
    '{custom_priority}',
    to_jsonb(
      CASE custom_attributes->>'custom_priority'
        WHEN '低' THEN 'Low'
        WHEN '中' THEN 'Medium'
        WHEN '高' THEN 'High'
      END
    )
  ),
  updated_at = CURRENT_TIMESTAMP
WHERE custom_attributes->>'custom_priority' IN ('低', '中', '高');