hook_default_rules_configuration() advanced sample.

gistfile1.php

<?php

/**
 * Implements hook_default_rules_configuration().
 */
function MYMODULE_default_rules_configuration() {
  $rules = array();

  // Custom rule : calculate the weight of a line item
  $rule = rule($variables, $provides);
  $rule->label = t('(MYMODULE) Calculate total weight of line item');
  $rule->active = TRUE;
  $rule
    ->condition('entity_has_field', array(
      'entity:select' => 'line_item',
      'field' => 'commerce_product',
    ))
    ->condition('entity_has_field', array(
      'entity:select' => 'line-item:commerce-product',
      'field' => 'field_weight',
    ))
    ->action('data_calc', array(
      'input_1:select' => 'line-item:commerce-product:field-weight:weight',
      'op' => '*',
      'input_2:select' => 'line-item:quantity',
      'result:var' => 'result',
      'result:label' => 'Résultat du calcul',
    ))
    ->action('data_set', array(
      'data:select' => 'total-weight',
      'value:select' => 'result',
    ));
  $rules['MYMODULE_action_calculate_weight_line_item'] = $rule;

  // Custom rule : calculate the weight of an entire order
  $rule = rule($variables, $provides);
  $rule->label = t('(MYMODULE) Calculate total weight of order');
  $rule->active = TRUE;
  $rule
    ->action('data_set', array(
      'data:select' => 'total_weight',
      'value' => '0',
    ))
    ->action(
      rules_loop(array(
        'list:select' => 'commerce-order:commerce-line-items',
        'item:var' => 'line_item',
        'item:label' => 'Line item',
      ))
      ->action('component_MYMODULE_action_calculate_weight_line_item', array(
        'line_item:select' => 'line-item',
        'total_weight:var' => 'total_weight_line_item',
        'total_weight:label' => 'Total weight of line item',
      ))
      ->action('data_calc', array(
        'input_1:select' => 'total-weight',
        'op' => '+',
        'input_2:select' => 'total-weight-line-item',
        'result:var' => 'result',
        'result:label' => 'Résultat du calcul',
      ))
      ->action('data_set', array(
        'data:select' => 'total-weight',
        'value:select' => 'result',
      ))
    );
  $rules['MYMODULE_action_calculate_weight_order'] = $rule;

  // Custom condition : order's total weight is between 0 and 99g
  $rule = rules_and($variables);
  $rule->label = t('(MYMODULE) Condition weight between 0 and 99g');
  $rule->active = TRUE;
  $rule
    ->condition(
      rules_or()
      ->condition('data_is', array(
        'data:select' => 'total_weight',
        'op' => '=',
        'value' => '0',
      ))
      ->condition('data_is', array(
        'data:select' => 'total_weight',
        'op' => '>',
        'value' => '0',
      ))
    )
    ->condition('data_is', array(
      'data:select' => 'total_weight',
      'op' => '<',
      'value' => '0.1',
    ));
  $rules['MYMODULE_condition_weight_0_100'] = $rule;


  // Custom rule : if order weight between O and 99g, apply the given shipping rate
  $rule = rule($variables);
  $rule->label = t('(MYMODULE) Enable flat rate "area1_0_100"');
  $rule->active = TRUE;
  $rule
    ->condition('component_MYMODULE_condition_weight_0_100', array(
      'total_weight:select' => 'total_weight',
    ))
    ->action('commerce_shipping_service_rate_order', array(
      'shipping_service_name' => 'area1_0_100',
      'commerce_order:select' => 'commerce_order',
    ));
  $rules['MYMODULE_action_enable_rate_area1_0_100'] = $rule;


  // Custom rule : collect rates
  $rule = rule($variables);
  $rule->label = t('(MYMODULE) Enable flat rates for Area 1');
  $rule->active = TRUE;
  $rule
    ->condition('component_MYMODULE_condition_shipping_area1', array(
      'commerce_order:select' => 'commerce_order',
    ))
    ->action('component_MYMODULE_action_enable_rate_area1_0_100', array(
      'commerce_order:select' => 'commerce_order',
      'total_weight:select' => 'total_weight',
    ))
    ->action('component_MYMODULE_action_enable_rate_area1_100_500', array(
      'commerce_order:select' => 'commerce_order',
      'total_weight:select' => 'total_weight',
    ))
    ->action('component_MYMODULE_action_enable_rate_area1_500_1000', array(
      'commerce_order:select' => 'commerce_order',
      'total_weight:select' => 'total_weight',
    ))
    ->action('component_MYMODULE_action_enable_rate_area1_1000_2000', array(
      'commerce_order:select' => 'commerce_order',
      'total_weight:select' => 'total_weight',
    ))
    ->action('component_MYMODULE_action_enable_rate_area1_2000_10000', array(
      'commerce_order:select' => 'commerce_order',
      'total_weight:select' => 'total_weight',
    ))
    ->action('component_MYMODULE_action_enable_rate_area1_10000+', array(
      'commerce_order:select' => 'commerce_order',
      'total_weight:select' => 'total_weight',
    ));
  $rules['MYMODULE_action_enable_rate_area1'] = $rule;
  
  
  // custom reaction rule : when collecting rates, run the other custom rules
  $rule = rules_reaction_rule();
  $rule->label = t('(MYMODULE) Enable shipping rates');
  $rule->active = TRUE;
  $rule->event('commerce_shipping_collect_rates')
    ->action('component_MYMODULE_action_calculate_weight_order', array(
      'commerce_order:select' => 'commerce_order',
      'total_weight:var' => 'total_weight',
      'total_weight:label' => 'Total weight',
    ))
    ->action('component_MYMODULE_action_enable_rate_france', array(
      'commerce_order:select' => 'commerce_order',
      'total_weight:select' => 'total_weight',
    ))
    ->action('component_MYMODULE_action_enable_rate_area1', array(
      'commerce_order:select' => 'commerce_order',
      'total_weight:select' => 'total_weight',
    ))
    ->action('component_MYMODULE_action_enable_rate_area2', array(
      'commerce_order:select' => 'commerce_order',
      'total_weight:select' => 'total_weight',
    ));
  $rules['MYMODULE_action_enable_shipping_rates'] = $rule;



  return $rules;
}