price-vis.php

<?php 

// required to hide add to cart
function commerce_price_visibility_form_alter(&$form, &$form_state, $form_id) {

  if (strpos($form_id,"cart_add_to_cart")) {

    // standard group/user vis check
    $show_price = determine_visibility(); 
    
    // used to hide all from anon users until public access is opened
    global $user;
    if ($user->uid == 0) {
      $form['quantity']['#access'] = false;
      $form['submit']['#access'] = false;
    }

    if ($show_price == 0) {
      // enables wishlist with no pricing/hide pricing enabled
      //$form['quantity']['#access'] = false;
      $form['submit']['#access'] = false;
    }
  }
}

// node view alter
function commerce_price_visibility_node_view_alter(&$build) {

  // only run if we're looking at something with a product field
  if (!empty($build['field_product'])) {

    // standard group/user vis check
    $group = get_user_group();
    $show_price = determine_visibility(); 

    // if we're still at 1, let's make sure this product has a price
    if ($show_price == 1) {
      // check if the price is 0 on the current product
      if ($build['product:commerce_price']['#object']->commerce_price[LANGUAGE_NONE][0]['amount'] <= 0 AND $group->nid != '2421') {
        // we don't hide this since it's 0, part of gap pricing
        //$show_price = 0;  
        //$build['product:commerce_price']['#object']->commerce_price[LANGUAGE_NONE][0]['amount'] = 'Call for pricing';
        //dpm($build['product:commerce_price']['#object']->commerce_price[LANGUAGE_NONE][0]['amount']);
      }
    }

    // now let's hide the price no matter how show price got set
    if ($show_price == 0) {
      unset($build['product:commerce_price']);
      unset($build['product:field_comm_unit_of_measurement']);
    }

    //dpm($build);
    return $build;
  }
} 

// list view alter
function commerce_price_visibility_views_post_execute(&$view) {

  if ($view->name == 'product_list') {

    $show_price = determine_visibility();

    // if it's 0 based on group/user settings, we don't need to price check
    // each item in the view to determine visibility 
    if ($show_price == 0) {
      // loop through each result and unset price/uom
      foreach ($view->result as &$result) {
        $result->field_field_comm_unit_of_measurement = array(); 
        $result->field_commerce_price = array();
      }
    } else {
      // let's only hide 0 price items
      foreach ($view->result as &$result) {
        // check each item to see if the price is 0

        if (isset($result->field_commerce_price[0]['raw']['amount'])) {
          $result->field_field_comm_unit_of_measurement = array(); 
          $result->field_commerce_price = array();
        }
      }
    }

    return $view;
  }
}

// function to actually check visibility based on custom criteria
function determine_visibility() {
  // get all of our user related data
  global $user;
  $user_fields = user_load($user->uid);

  // set this to true at first, so we can eval it later if it's never false
  $show_price = 1;

  // find out if the user level price hiding is enabled
  if (isset($user_fields->field_hide_pricing[LANGUAGE_NONE])) {
    $user_hide = $user_fields->field_hide_pricing[LANGUAGE_NONE][0]['value'];
  } else {
    $user_hide = 1;
  }

  if ($user_hide == 1) {
    $show_price = 0;  
  } else {
    // let's get the node data ready, in here to decrease queries
    $group = get_user_group();

    // we'll see if the group has hidden pricing
    if ($group->field_hide_pricing[LANGUAGE_NONE][0]['value'] == 1 AND $group->nid != '2421') {
      $show_price = 0;  
    }
  } 

  return $show_price;
}

function get_user_group() {
  $groups = og_get_groups_by_user();

  if (is_array($groups)) {
    $group = array_values($groups['node']);
    $group = $group[0];
    $group = node_load($group);
  } else {
    $group = node_load('2456');
  }

  return $group;
}