<?php

/*
 * Try to get contact/address information for the logged in user from CiviCRM.
 * 
 * Returns NULL if a contact or address cannot be found for this user.
 */
function uc_buyingclub_civicrm_get_user_address_for_uc($user) {
  if ($user->uid == 0) return NULL;

  civicrm_initialize(TRUE);
  global $civicrm_root;

  // get civi contact id
  include_once($civicrm_root . '/api/v2/UFGroup.php');
  $civi_id = civicrm_uf_match_id_get($user->uid);
  if ($civi_id == NULL) return NULL;

  // get contact info
  $params = array(
    'contact_id' => $civi_id,
    'return.first_name' => 1,
    'return.last_name' => 1,
    'return.email' => 1,
    'return.phone' => 1,
    'return.postal_code' => 1,
    'return.address' => 1,
  );

  include_once($civicrm_root . '/api/v2/Contact.php');
  $contacts = civicrm_contact_get(&$params);
  if ($contacts == NULL || count($contacts) == 0) return NULL;

  $contact_ids = array_keys($contacts);
  $contact = $contacts[$contact_ids[0]];

  // get contact address info
  include_once($civicrm_root . '/api/v2/Location.php');
  $locations = civicrm_location_get($params);
  if ($locations == NULL || count($locations) == 0) return NULL;

  $location_ids = array_keys($locations);
  $address = $locations[$location_ids[0]]['address'];

  return array(
    'first_name' => $contact['first_name'],
    'last_name' => $contact['last_name'],
    'phone' => $contact['phone'],
    'company' => '',
    'street1' => $address['street_address'],
    'street2' => $address['supplemental_address_1'],
    'city' => $address['city'],
    'zone' => 43, // New York state
    'postal_code' => $contact['postal_code'],
    'country' => 840, // United States
  );
}

/*
 * Add the address in CiviCRM for the user to the user's saved billing addresses, automatically populate.
 */
function uc_buyingclub_civicrm_form_alter(&$form, $form_state, $form_id) {
  if ($form_id == 'uc_cart_checkout_form') {
    global $user;
    $civi_address = uc_buyingclub_civicrm_get_user_address_for_uc($user);

    if ($civi_address == NULL) return;

    $billing_pane = &$form['panes']['billing'];

    // add civi address to dropdown
    $label = t('From CiviCRM');
    $billing_pane['billing_address_select']['#options'][drupal_to_js($civi_address)] = $label;
    $billing_pane['billing_address_select']['#default_value'] = $label;

    // assume user will be fine with civi address
    foreach ($civi_address as $label => $value) {
      $billing_pane['billing_'. $label]['#default_value'] = $value;
    }
  }
}