CRM/Event/Form/Registration/Register.php

   1 <?php
   2 /*
   3  +--------------------------------------------------------------------+
   4  | Copyright CiviCRM LLC. All rights reserved.                        |
   5  |                                                                    |
   6  | This work is published under the GNU AGPLv3 license with some      |
   7  | permitted exceptions and without any warranty. For full license    |
   8  | and copyright information, see https://civicrm.org/licensing       |
   9  +--------------------------------------------------------------------+
  10  */
  11
  12 /**
  13  * @package CRM
  14  * @copyright CiviCRM LLC https://civicrm.org/licensing
  15  */
  16
  17 /**
  18  * This class generates form components for processing Event.
  19  */
  20 class CRM_Event_Form_Registration_Register extends CRM_Event_Form_Registration {
  21
  22   /**
  23    * The fields involved in this page.
  24    *
  25    * @var array
  26    */
  27   public $_fields;
  28
  29   /**
  30    * The status message that user view.
  31    *
  32    * @var string
  33    */
  34   protected $_waitlistMsg;
  35   protected $_requireApprovalMsg;
  36
  37   /**
  38    * Deprecated parameter that we hope to remove.
  39    *
  40    * @var bool
  41    */
  42   public $_quickConfig;
  43
  44   /**
  45    * Skip duplicate check.
  46    *
  47    * This can be set using hook_civicrm_buildForm() to override the registration dupe check.
  48    *
  49    * @var bool
  50    * @see https://issues.civicrm.org/jira/browse/CRM-7604
  51    */
  52   public $_skipDupeRegistrationCheck = FALSE;
  53
  54   public $_paymentProcessorID;
  55
  56   /**
  57    * Show fee block or not.
  58    *
  59    * @var bool
  60    */
  61   public $_noFees;
  62
  63   /**
  64    * Fee Block.
  65    *
  66    * @var array
  67    */
  68   public $_feeBlock;
  69
  70   /**
  71    * Array of payment related fields to potentially display on this form (generally credit card or debit card fields).
  72    *
  73    * This is rendered via billingBlock.tpl.
  74    *
  75    * @var array
  76    */
  77   public $_paymentFields = [];
  78
  79   /**
  80    * Is this submission incurring no costs.
  81    *
  82    * @param array $fields
  83    * @param \CRM_Event_Form_Registration_Register $form
  84    *
  85    * @return bool
  86    */
  87   protected static function isZeroAmount($fields, $form): bool {
  88     $isZeroAmount = FALSE;
  89     if (!empty($fields['priceSetId'])) {
  90       if (empty($fields['amount'])) {
  91         $isZeroAmount = TRUE;
  92       }
  93     }
  94     elseif (!empty($fields['amount']) &&
  95       (isset($form->_values['discount'][$fields['amount']])
  96         && CRM_Utils_Array::value('value', $form->_values['discount'][$fields['amount']]) == 0
  97       )
  98     ) {
  99       $isZeroAmount = TRUE;
 100     }
 101     elseif (!empty($fields['amount']) &&
 102       (isset($form->_values['fee'][$fields['amount']])
 103         && CRM_Utils_Array::value('value', $form->_values['fee'][$fields['amount']]) == 0
 104       )
 105     ) {
 106       $isZeroAmount = TRUE;
 107     }
 108     return $isZeroAmount;
 109   }
 110
 111   /**
 112    * Get the contact id for the registration.
 113    *
 114    * @param array $fields
 115    * @param CRM_Event_Form_Registration $form
 116    * @param bool $isAdditional
 117    *
 118    * @return int|null
 119    */
 120   public static function getRegistrationContactID($fields, $form, $isAdditional) {
 121     $contactID = NULL;
 122     if (!$isAdditional) {
 123       $contactID = $form->getContactID();
 124     }
 125     if (!$contactID && is_array($fields) && $fields) {
 126       $contactID = CRM_Contact_BAO_Contact::getFirstDuplicateContact($fields, 'Individual', 'Unsupervised', [], FALSE, CRM_Utils_Array::value('dedupe_rule_group_id', $form->_values['event']), ['event_id' => CRM_Utils_Array::value('id', $form->_values['event'])]);
 127     }
 128     return $contactID;
 129   }
 130
 131   /**
 132    * Get the active UFGroups (profiles) on this form
 133    * Many forms load one or more UFGroups (profiles).
 134    * This provides a standard function to retrieve the IDs of those profiles from the form
 135    * so that you can implement things such as "is is_captcha field set on any of the active profiles on this form?"
 136    *
 137    * NOT SUPPORTED FOR USE OUTSIDE CORE EXTENSIONS - Added for reCAPTCHA core extension.
 138    *
 139    * @return array
 140    */
 141   public function getUFGroupIDs() {
 142     $ufGroupIDs = [];
 143     if (!empty($this->_values['custom_pre_id'])) {
 144       $ufGroupIDs[] = $this->_values['custom_pre_id'];
 145     }
 146     if (!empty($this->_values['custom_post_id'])) {
 147       // custom_post_id can be an array (because we can have multiple for events).
 148       // It is handled as array for contribution page as well though they don't support multiple profiles.
 149       if (!is_array($this->_values['custom_post_id'])) {
 150         $ufGroupIDs[] = $this->_values['custom_post_id'];
 151       }
 152       else {
 153         $ufGroupIDs = array_merge($ufGroupIDs, $this->_values['custom_post_id']);
 154       }
 155     }
 156     return $ufGroupIDs;
 157   }
 158
 159   /**
 160    * Set variables up before form is built.
 161    *
 162    * @throws \CRM_Core_Exception
 163    */
 164   public function preProcess() {
 165     parent::preProcess();
 166
 167     //CRM-4320.
 168     //here we can't use parent $this->_allowWaitlist as user might
 169     //walk back and we might set this value in this postProcess.
 170     //(we set when spaces < group count and want to allow become part of waiting )
 171     $eventFull = CRM_Event_BAO_Participant::eventFull($this->_eventId, FALSE, CRM_Utils_Array::value('has_waitlist', $this->_values['event']));
 172
 173     // Get payment processors if appropriate for this event
 174     // We hide the payment fields if the event is full or requires approval,
 175     // and the current user has not yet been approved CRM-12279
 176     $this->_noFees = (($eventFull || $this->_requireApproval) && !$this->_allowConfirmation);
 177     $this->_paymentProcessors = $this->_noFees ? [] : $this->get('paymentProcessors');
 178     $this->preProcessPaymentOptions();
 179
 180     $this->_allowWaitlist = FALSE;
 181     if ($eventFull && !$this->_allowConfirmation && !empty($this->_values['event']['has_waitlist'])) {
 182       $this->_allowWaitlist = TRUE;
 183       $this->_waitlistMsg = $this->_values['event']['waitlist_text'] ?? NULL;
 184       if (!$this->_waitlistMsg) {
 185         $this->_waitlistMsg = ts('This event is currently full. However you can register now and get added to a waiting list. You will be notified if spaces become available.');
 186       }
 187     }
 188     $this->set('allowWaitlist', $this->_allowWaitlist);
 189
 190     //To check if the user is already registered for the event(CRM-2426)
 191     if (!$this->_skipDupeRegistrationCheck) {
 192       self::checkRegistration(NULL, $this);
 193     }
 194
 195     $this->assign('availableRegistrations', $this->_availableRegistrations);
 196
 197     // get the participant values from EventFees.php, CRM-4320
 198     if ($this->_allowConfirmation) {
 199       CRM_Event_Form_EventFees::preProcess($this);
 200     }
 201   }
 202
 203   /**
 204    * Set default values for the form.
 205    *
 206    * @return array
 207    *
 208    * @throws \CRM_Core_Exception
 209    * @throws \CiviCRM_API3_Exception
 210    */
 211   public function setDefaultValues() {
 212     $this->_defaults = [];
 213     if (!$this->_allowConfirmation && $this->_requireApproval) {
 214       $this->_defaults['bypass_payment'] = 1;
 215     }
 216     $contactID = $this->getContactID();
 217     CRM_Core_Payment_Form::setDefaultValues($this, $contactID);
 218
 219     CRM_Event_BAO_Participant::formatFieldsAndSetProfileDefaults($contactID, $this);
 220
 221     // Set default payment processor as default payment_processor radio button value
 222     if (!empty($this->_paymentProcessors)) {
 223       foreach ($this->_paymentProcessors as $pid => $value) {
 224         if (!empty($value['is_default'])) {
 225           $this->_defaults['payment_processor_id'] = $pid;
 226         }
 227       }
 228     }
 229
 230     //if event is monetary and pay later is enabled and payment
 231     //processor is not available then freeze the pay later checkbox with
 232     //default check
 233     if (!empty($this->_values['event']['is_pay_later']) &&
 234       !is_array($this->_paymentProcessor)
 235     ) {
 236       $this->_defaults['is_pay_later'] = 1;
 237     }
 238
 239     //set custom field defaults
 240     if (!empty($this->_fields)) {
 241       //load default campaign from page.
 242       if (array_key_exists('participant_campaign_id', $this->_fields)) {
 243         $this->_defaults['participant_campaign_id'] = CRM_Utils_Array::value('campaign_id',
 244           $this->_values['event']
 245         );
 246       }
 247
 248       foreach ($this->_fields as $name => $field) {
 249         if ($customFieldID = CRM_Core_BAO_CustomField::getKeyID($name)) {
 250           // fix for CRM-1743
 251           if (!isset($this->_defaults[$name])) {
 252             CRM_Core_BAO_CustomField::setProfileDefaults($customFieldID, $name, $this->_defaults,
 253               NULL, CRM_Profile_Form::MODE_REGISTER
 254             );
 255           }
 256         }
 257       }
 258     }
 259
 260     //fix for CRM-3088, default value for discount set.
 261     $discountId = NULL;
 262     if (!empty($this->_values['discount'])) {
 263       $discountId = CRM_Core_BAO_Discount::findSet($this->_eventId, 'civicrm_event');
 264       if ($discountId) {
 265         if (isset($this->_values['event']['default_discount_fee_id'])) {
 266           $discountKey = CRM_Core_DAO::getFieldValue('CRM_Core_DAO_OptionValue',
 267             $this->_values['event']['default_discount_fee_id'],
 268             'weight', 'id'
 269           );
 270
 271           $this->_defaults['amount'] = key(array_slice($this->_values['discount'][$discountId],
 272             $discountKey - 1, $discountKey, TRUE
 273           ));
 274         }
 275       }
 276     }
 277
 278     // add this event's default participant role to defaults array
 279     // (for cases where participant_role field is included in form via profile)
 280     if ($this->_values['event']['default_role_id']) {
 281       $this->_defaults['participant_role']
 282         = $this->_defaults['participant_role_id'] = $this->_values['event']['default_role_id'];
 283     }
 284     if ($this->_priceSetId && !empty($this->_feeBlock)) {
 285       foreach ($this->_feeBlock as $key => $val) {
 286         if (empty($val['options'])) {
 287           continue;
 288         }
 289         $optionFullIds = CRM_Utils_Array::value('option_full_ids', $val, []);
 290         foreach ($val['options'] as $keys => $values) {
 291           $priceFieldName = 'price_' . $values['price_field_id'];
 292           $priceFieldValue = CRM_Price_BAO_PriceSet::getPriceFieldValueFromURL($this, $priceFieldName);
 293           if (!empty($priceFieldValue)) {
 294             CRM_Price_BAO_PriceSet::setDefaultPriceSetField($priceFieldName, $priceFieldValue, $val['html_type'], $this->_defaults);
 295             // break here to prevent overwriting of default due to 'is_default'
 296             // option configuration. The value sent via URL get's higher priority.
 297             break;
 298           }
 299           else {
 300             if ($values['is_default'] && empty($values['is_full'])) {
 301               if ($val['html_type'] == 'CheckBox') {
 302                 $this->_defaults["price_{$key}"][$keys] = 1;
 303               }
 304               else {
 305                 $this->_defaults["price_{$key}"] = $keys;
 306               }
 307             }
 308           }
 309         }
 310         $unsetSubmittedOptions[$val['id']] = $optionFullIds;
 311       }
 312       //reset values for all options those are full.
 313       CRM_Event_Form_Registration::resetElementValue($unsetSubmittedOptions, $this);
 314     }
 315
 316     //set default participant fields, CRM-4320.
 317     $hasAdditionalParticipants = FALSE;
 318     if ($this->_allowConfirmation) {
 319       $this->_contactId = $contactID;
 320       $this->_discountId = $discountId;
 321       $forcePayLater = CRM_Utils_Array::value('is_pay_later', $this->_defaults, FALSE);
 322       $this->_defaults = array_merge($this->_defaults, CRM_Event_Form_EventFees::setDefaultValues($this));
 323       $this->_defaults['is_pay_later'] = $forcePayLater;
 324
 325       if ($this->_additionalParticipantIds) {
 326         $hasAdditionalParticipants = TRUE;
 327         $this->_defaults['additional_participants'] = count($this->_additionalParticipantIds);
 328       }
 329     }
 330     $this->assign('hasAdditionalParticipants', $hasAdditionalParticipants);
 331
 332     //         //hack to simplify credit card entry for testing
 333     //         $this->_defaults['credit_card_type']     = 'Visa';
 334     //         $this->_defaults['credit_card_number']   = '4807731747657838';
 335     //         $this->_defaults['cvv2']                 = '000';
 336     //         $this->_defaults['credit_card_exp_date'] = array( 'Y' => '2010', 'M' => '05' );
 337
 338     // to process Custom data that are appended to URL
 339     $getDefaults = CRM_Core_BAO_CustomGroup::extractGetParams($this, "'Contact', 'Individual', 'Contribution', 'Participant'");
 340     if (!empty($getDefaults)) {
 341       $this->_defaults = array_merge($this->_defaults, $getDefaults);
 342     }
 343
 344     return $this->_defaults;
 345   }
 346
 347   /**
 348    * Build the form object.
 349    */
 350   public function buildQuickForm() {
 351     // build profiles first so that we can determine address fields etc
 352     // and then show copy address checkbox
 353     $this->buildCustom($this->_values['custom_pre_id'], 'customPre');
 354     $this->buildCustom($this->_values['custom_post_id'], 'customPost');
 355
 356     // CRM-18399: used by template to pass pre profile id as a url arg
 357     $this->assign('custom_pre_id', $this->_values['custom_pre_id']);
 358
 359     // Required for currency formatting in the JS layer
 360
 361     // Required for currency formatting in the JS layer
 362     // this is a temporary fix intended to resolve a regression quickly
 363     // And assigning moneyFormat for js layer formatting
 364     // will only work until that is done.
 365     // https://github.com/civicrm/civicrm-core/pull/19151
 366     $this->assign('moneyFormat', CRM_Utils_Money::format(1234.56));
 367
 368     CRM_Core_Payment_ProcessorForm::buildQuickForm($this);
 369
 370     $contactID = $this->getContactID();
 371     if ($contactID) {
 372       $this->assign('contact_id', $contactID);
 373       $this->assign('display_name', CRM_Contact_BAO_Contact::displayName($contactID));
 374     }
 375
 376     $bypassPayment = $allowGroupOnWaitlist = $isAdditionalParticipants = FALSE;
 377     if ($this->_values['event']['is_multiple_registrations']) {
 378       // don't allow to add additional during confirmation if not preregistered.
 379       if (!$this->_allowConfirmation || $this->_additionalParticipantIds) {
 380         // CRM-17745: Make maximum additional participants configurable
 381         // Label is value + 1, since the code sees this is ADDITIONAL participants (in addition to "self")
 382         $additionalOptions = [];
 383         $additionalOptions[''] = 1;
 384         for ($i = 1; $i <= $this->_values['event']['max_additional_participants']; $i++) {
 385           $additionalOptions[$i] = $i + 1;
 386         }
 387         $this->add('select', 'additional_participants',
 388           ts('How many people are you registering?'),
 389           $additionalOptions,
 390           NULL
 391         );
 392         $isAdditionalParticipants = TRUE;
 393       }
 394     }
 395
 396     if (!$this->_allowConfirmation) {
 397       $bypassPayment = TRUE;
 398     }
 399
 400     //hack to allow group to register w/ waiting
 401     if ((!empty($this->_values['event']['is_multiple_registrations']) ||
 402         $this->_priceSetId
 403       ) &&
 404       !$this->_allowConfirmation &&
 405       is_numeric($this->_availableRegistrations) && !empty($this->_values['event']['has_waitlist'])
 406     ) {
 407       $bypassPayment = TRUE;
 408       //case might be group become as a part of waitlist.
 409       //If not waitlist then they require admin approve.
 410       $allowGroupOnWaitlist = TRUE;
 411       $this->_waitlistMsg = ts("This event has only %1 space(s) left. If you continue and register more than %1 people (including yourself ), the whole group will be wait listed. Or, you can reduce the number of people you are registering to %1 to avoid being put on the waiting list.", [1 => $this->_availableRegistrations]);
 412
 413       if ($this->_requireApproval) {
 414         $this->_requireApprovalMsg = CRM_Utils_Array::value('approval_req_text', $this->_values['event'],
 415           ts('Registration for this event requires approval. Once your registration(s) have been reviewed, you will receive an email with a link to a web page where you can complete the registration process.')
 416         );
 417       }
 418     }
 419
 420     //case where only approval needed - no waitlist.
 421     if ($this->_requireApproval &&
 422       !$this->_allowWaitlist && !$bypassPayment
 423     ) {
 424       $this->_requireApprovalMsg = CRM_Utils_Array::value('approval_req_text', $this->_values['event'],
 425         ts('Registration for this event requires approval. Once your registration has been reviewed, you will receive an email with a link to a web page where you can complete the registration process.')
 426       );
 427     }
 428
 429     //lets display status to primary page only.
 430     $this->assign('waitlistMsg', $this->_waitlistMsg);
 431     $this->assign('requireApprovalMsg', $this->_requireApprovalMsg);
 432     $this->assign('allowGroupOnWaitlist', $allowGroupOnWaitlist);
 433     $this->assign('isAdditionalParticipants', $isAdditionalParticipants);
 434
 435     if ($this->_values['event']['is_monetary']) {
 436       self::buildAmount($this);
 437     }
 438
 439     if ($contactID === 0 && !$this->_values['event']['is_multiple_registrations']) {
 440       //@todo we are blocking for multiple registrations because we haven't tested
 441       $this->addCIDZeroOptions();
 442     }
 443
 444     if ($this->_values['event']['is_monetary']) {
 445       $this->addPaymentProcessorFieldsToForm();
 446     }
 447
 448     $this->addElement('hidden', 'bypass_payment', NULL, ['id' => 'bypass_payment']);
 449
 450     $this->assign('bypassPayment', $bypassPayment);
 451
 452     if (!$contactID) {
 453       $createCMSUser = FALSE;
 454
 455       if ($this->_values['custom_pre_id']) {
 456         $profileID = $this->_values['custom_pre_id'];
 457         $createCMSUser = CRM_Core_DAO::getFieldValue('CRM_Core_DAO_UFGroup', $profileID, 'is_cms_user');
 458       }
 459
 460       if (!$createCMSUser &&
 461         $this->_values['custom_post_id']
 462       ) {
 463         if (!is_array($this->_values['custom_post_id'])) {
 464           $profileIDs = [$this->_values['custom_post_id']];
 465         }
 466         else {
 467           $profileIDs = $this->_values['custom_post_id'];
 468         }
 469         foreach ($profileIDs as $pid) {
 470           if (CRM_Core_DAO::getFieldValue('CRM_Core_DAO_UFGroup', $pid, 'is_cms_user')) {
 471             $profileID = $pid;
 472             $createCMSUser = TRUE;
 473             break;
 474           }
 475         }
 476       }
 477
 478       if ($createCMSUser) {
 479         CRM_Core_BAO_CMSUser::buildForm($this, $profileID, TRUE);
 480       }
 481     }
 482
 483     //we have to load confirm contribution button in template
 484     //when multiple payment processor as the user
 485     //can toggle with payment processor selection
 486     $billingModePaymentProcessors = 0;
 487     if (!CRM_Utils_System::isNull($this->_paymentProcessors)) {
 488       foreach ($this->_paymentProcessors as $key => $values) {
 489         if ($values['billing_mode'] == CRM_Core_Payment::BILLING_MODE_BUTTON) {
 490           $billingModePaymentProcessors++;
 491         }
 492       }
 493     }
 494
 495     if ($billingModePaymentProcessors && count($this->_paymentProcessors) == $billingModePaymentProcessors) {
 496       $allAreBillingModeProcessors = TRUE;
 497     }
 498     else {
 499       $allAreBillingModeProcessors = FALSE;
 500     }
 501
 502     if (!$allAreBillingModeProcessors || !empty($this->_values['event']['is_pay_later']) || $bypassPayment
 503     ) {
 504
 505       //freeze button to avoid multiple calls.
 506       if (empty($this->_values['event']['is_monetary'])) {
 507         $this->submitOnce = TRUE;
 508       }
 509
 510       // CRM-11182 - Optional confirmation screen
 511       // Change button label depending on whether the next action is confirm or register
 512       $buttonParams = [
 513         'type' => 'upload',
 514         'spacing' => '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;',
 515         'isDefault' => TRUE,
 516       ];
 517       if (
 518         !$this->_values['event']['is_multiple_registrations']
 519         && !$this->_values['event']['is_monetary']
 520         && !$this->_values['event']['is_confirm_enabled']
 521       ) {
 522         $buttonParams['name'] = ts('Register');
 523       }
 524       else {
 525         $buttonParams['name'] = ts('Review');
 526         $buttonParams['icon'] = 'fa-chevron-right';
 527       }
 528
 529       $this->addButtons([$buttonParams]);
 530     }
 531
 532     $this->addFormRule(['CRM_Event_Form_Registration_Register', 'formRule'], $this);
 533     $this->unsavedChangesWarn = TRUE;
 534
 535     // add pcp fields
 536     if ($this->_pcpId) {
 537       CRM_PCP_BAO_PCP::buildPcp($this->_pcpId, $this);
 538     }
 539   }
 540
 541   /**
 542    * Build the radio/text form elements for the amount field
 543    *
 544    * @param CRM_Event_Form_Registration_Register $form
 545    *   Form object.
 546    * @param bool $required
 547    *   True if you want to add formRule.
 548    * @param int $discountId
 549    *   Discount id for the event.
 550    *
 551    * @throws \CRM_Core_Exception
 552    */
 553   public static function buildAmount(&$form, $required = TRUE, $discountId = NULL) {
 554     // build amount only when needed, skip incase of event full and waitlisting is enabled
 555     // and few other conditions check preProcess()
 556     if (property_exists($form, '_noFees') && $form->_noFees) {
 557       return;
 558     }
 559
 560     //if payment done, no need to build the fee block.
 561     if (!empty($form->_paymentId)) {
 562       //fix to display line item in update mode.
 563       $form->assign('priceSet', $form->_priceSet ?? NULL);
 564       return;
 565     }
 566
 567     $feeFields = $form->_values['fee'] ?? NULL;
 568
 569     if (is_array($feeFields)) {
 570       $form->_feeBlock = &$form->_values['fee'];
 571     }
 572
 573     //check for discount.
 574     $discountedFee = $form->_values['discount'] ?? NULL;
 575     if (is_array($discountedFee) && !empty($discountedFee)) {
 576       if (!$discountId) {
 577         $form->_discountId = $discountId = CRM_Core_BAO_Discount::findSet($form->_eventId, 'civicrm_event');
 578       }
 579       if ($discountId) {
 580         $form->_feeBlock = &$form->_values['discount'][$discountId];
 581       }
 582     }
 583     if (!is_array($form->_feeBlock)) {
 584       $form->_feeBlock = [];
 585     }
 586
 587     //its time to call the hook.
 588     CRM_Utils_Hook::buildAmount('event', $form, $form->_feeBlock);
 589
 590     //reset required if participant is skipped.
 591     $button = substr($form->controller->getButtonName(), -4);
 592     if ($required && $button == 'skip') {
 593       $required = FALSE;
 594     }
 595
 596     $className = CRM_Utils_System::getClassName($form);
 597
 598     //build the priceset fields.
 599     if (isset($form->_priceSetId) && $form->_priceSetId) {
 600
 601       //format price set fields across option full.
 602       self::formatFieldsForOptionFull($form);
 603
 604       if (!empty($form->_priceSet['is_quick_config'])) {
 605         $form->_quickConfig = $form->_priceSet['is_quick_config'];
 606       }
 607       $form->add('hidden', 'priceSetId', $form->_priceSetId);
 608
 609       // CRM-14492 Admin price fields should show up on event registration if user has 'administer CiviCRM' permissions
 610       $adminFieldVisible = FALSE;
 611       if (CRM_Core_Permission::check('administer CiviCRM data')) {
 612         $adminFieldVisible = TRUE;
 613       }
 614
 615       $hideAdminValues = TRUE;
 616       if (CRM_Core_Permission::check('edit event participants')) {
 617         $hideAdminValues = FALSE;
 618       }
 619
 620       foreach ($form->_feeBlock as $field) {
 621         // public AND admin visibility fields are included for back-office registration and back-office change selections
 622         if (CRM_Utils_Array::value('visibility', $field) == 'public' ||
 623           (CRM_Utils_Array::value('visibility', $field) == 'admin' && $adminFieldVisible == TRUE) ||
 624           $className == 'CRM_Event_Form_Participant' ||
 625           $className === 'CRM_Event_Form_Task_Register' ||
 626           $className == 'CRM_Event_Form_ParticipantFeeSelection'
 627         ) {
 628           $fieldId = $field['id'];
 629           $elementName = 'price_' . $fieldId;
 630
 631           $isRequire = $field['is_required'] ?? NULL;
 632           if ($button == 'skip') {
 633             $isRequire = FALSE;
 634           }
 635
 636           //user might modified w/ hook.
 637           $options = $field['options'] ?? NULL;
 638           $formClasses = ['CRM_Event_Form_Participant', 'CRM_Event_Form_Task_Register', 'CRM_Event_Form_ParticipantFeeSelection'];
 639
 640           if (!is_array($options)) {
 641             continue;
 642           }
 643           elseif ($hideAdminValues && !in_array($className, $formClasses)) {
 644             $publicVisibilityID = CRM_Price_BAO_PriceField::getVisibilityOptionID('public');
 645             $adminVisibilityID = CRM_Price_BAO_PriceField::getVisibilityOptionID('admin');
 646
 647             foreach ($options as $key => $currentOption) {
 648               $optionVisibility = CRM_Utils_Array::value('visibility_id', $currentOption, $publicVisibilityID);
 649               if ($optionVisibility == $adminVisibilityID) {
 650                 unset($options[$key]);
 651               }
 652             }
 653           }
 654
 655           $optionFullIds = CRM_Utils_Array::value('option_full_ids', $field, []);
 656
 657           //soft suppress required rule when option is full.
 658           if (!empty($optionFullIds) && (count($options) == count($optionFullIds))) {
 659             $isRequire = FALSE;
 660           }
 661           if (!empty($options)) {
 662             //build the element.
 663             CRM_Price_BAO_PriceField::addQuickFormElement($form,
 664               $elementName,
 665               $fieldId,
 666               FALSE,
 667               $isRequire,
 668               NULL,
 669               $options,
 670               $optionFullIds
 671             );
 672           }
 673         }
 674       }
 675       $form->_priceSet['id'] = $form->_priceSet['id'] ?? $form->_priceSetId;
 676       $form->assign('priceSet', $form->_priceSet);
 677     }
 678     else {
 679       $eventFeeBlockValues = $elements = $elementJS = [];
 680       foreach ($form->_feeBlock as $fee) {
 681         if (is_array($fee)) {
 682
 683           //CRM-7632, CRM-6201
 684           $totalAmountJs = NULL;
 685           if ($className == 'CRM_Event_Form_Participant' || $className === 'CRM_Event_Form_Task_Register') {
 686             $totalAmountJs = ['onClick' => "fillTotalAmount(" . $fee['value'] . ")"];
 687           }
 688
 689           $eventFeeBlockValues['amount_id_' . $fee['amount_id']] = $fee['value'];
 690           $elements[$fee['amount_id']] = CRM_Utils_Money::format($fee['value']) . ' ' . $fee['label'];
 691           $elementJS[$fee['amount_id']] = $totalAmountJs;
 692         }
 693       }
 694       $form->assign('eventFeeBlockValues', json_encode($eventFeeBlockValues));
 695
 696       $form->_defaults['amount'] = $form->_values['event']['default_fee_id'] ?? NULL;
 697       $element = &$form->addRadio('amount', ts('Event Fee(s)'), $elements, [], '<br />', FALSE, $elementJS);
 698       if (isset($form->_online) && $form->_online) {
 699         $element->freeze();
 700       }
 701       if ($required) {
 702         $form->addRule('amount', ts('Fee Level is a required field.'), 'required');
 703       }
 704     }
 705   }
 706
 707   /**
 708    * @param CRM_Event_Form_Registration $form
 709    */
 710   public static function formatFieldsForOptionFull(&$form) {
 711     $priceSet = $form->get('priceSet');
 712     $priceSetId = $form->get('priceSetId');
 713     $defaultPricefieldIds = [];
 714     if (!empty($form->_values['line_items'])) {
 715       foreach ($form->_values['line_items'] as $lineItem) {
 716         $defaultPricefieldIds[] = $lineItem['price_field_value_id'];
 717       }
 718     }
 719     if (!$priceSetId ||
 720       !is_array($priceSet) ||
 721       empty($priceSet) || empty($priceSet['optionsMaxValueTotal'])
 722     ) {
 723       return;
 724     }
 725
 726     $skipParticipants = $formattedPriceSetDefaults = [];
 727     if (!empty($form->_allowConfirmation) && (isset($form->_pId) || isset($form->_additionalParticipantId))) {
 728       $participantId = $form->_pId ?? $form->_additionalParticipantId;
 729       $pricesetDefaults = CRM_Event_Form_EventFees::setDefaultPriceSet($participantId,
 730         $form->_eventId
 731       );
 732       // modify options full to respect the selected fields
 733       // options on confirmation.
 734       $formattedPriceSetDefaults = self::formatPriceSetParams($form, $pricesetDefaults);
 735
 736       // to skip current registered participants fields option count on confirmation.
 737       $skipParticipants[] = $form->_participantId;
 738       if (!empty($form->_additionalParticipantIds)) {
 739         $skipParticipants = array_merge($skipParticipants, $form->_additionalParticipantIds);
 740       }
 741     }
 742
 743     $className = CRM_Utils_System::getClassName($form);
 744
 745     //get the current price event price set options count.
 746     $currentOptionsCount = self::getPriceSetOptionCount($form);
 747     $recordedOptionsCount = CRM_Event_BAO_Participant::priceSetOptionsCount($form->_eventId, $skipParticipants);
 748     $optionFullTotalAmount = 0;
 749     $currentParticipantNo = (int) substr($form->_name, 12);
 750     foreach ($form->_feeBlock as & $field) {
 751       $optionFullIds = [];
 752       $fieldId = $field['id'];
 753       if (!is_array($field['options'])) {
 754         continue;
 755       }
 756       foreach ($field['options'] as & $option) {
 757         $optId = $option['id'];
 758         $count = CRM_Utils_Array::value('count', $option, 0);
 759         $maxValue = CRM_Utils_Array::value('max_value', $option, 0);
 760         $dbTotalCount = CRM_Utils_Array::value($optId, $recordedOptionsCount, 0);
 761         $currentTotalCount = CRM_Utils_Array::value($optId, $currentOptionsCount, 0);
 762
 763         $totalCount = $currentTotalCount + $dbTotalCount;
 764         $isFull = FALSE;
 765         if ($maxValue &&
 766           (($totalCount >= $maxValue) &&
 767           (empty($form->_lineItem[$currentParticipantNo][$optId]['price_field_id']) || $dbTotalCount >= $maxValue))
 768         ) {
 769           $isFull = TRUE;
 770           $optionFullIds[$optId] = $optId;
 771           if ($field['html_type'] != 'Select') {
 772             if (in_array($optId, $defaultPricefieldIds)) {
 773               $optionFullTotalAmount += CRM_Utils_Array::value('amount', $option);
 774             }
 775           }
 776           else {
 777             if (!empty($defaultPricefieldIds) && in_array($optId, $defaultPricefieldIds)) {
 778               unset($optionFullIds[$optId]);
 779             }
 780           }
 781         }
 782         //here option is not full,
 783         //but we don't want to allow participant to increase
 784         //seats at the time of re-walking registration.
 785         if ($count &&
 786           !empty($form->_allowConfirmation) &&
 787           !empty($formattedPriceSetDefaults)
 788         ) {
 789           if (empty($formattedPriceSetDefaults["price_{$field}"]) || empty($formattedPriceSetDefaults["price_{$fieldId}"][$optId])) {
 790             $optionFullIds[$optId] = $optId;
 791             $isFull = TRUE;
 792           }
 793         }
 794         $option['is_full'] = $isFull;
 795         $option['db_total_count'] = $dbTotalCount;
 796         $option['total_option_count'] = $dbTotalCount + $currentTotalCount;
 797       }
 798
 799       //ignore option full for offline registration.
 800       if ($className == 'CRM_Event_Form_Participant' || $className === 'CRM_Event_Form_Task_Register') {
 801         $optionFullIds = [];
 802       }
 803
 804       //finally get option ids in.
 805       $field['option_full_ids'] = $optionFullIds;
 806     }
 807     $form->assign('optionFullTotalAmount', $optionFullTotalAmount);
 808   }
 809
 810   /**
 811    * Global form rule.
 812    *
 813    * @param array $fields
 814    *   The input form values.
 815    * @param array $files
 816    *   The uploaded files if any.
 817    * @param \CRM_Event_Form_Registration_Register $form
 818    *
 819    * @return bool|array
 820    *   true if no errors, else array of errors
 821    *
 822    * @throws \CRM_Core_Exception
 823    */
 824   public static function formRule($fields, $files, $form) {
 825     $errors = [];
 826     //check that either an email or firstname+lastname is included in the form(CRM-9587)
 827     self::checkProfileComplete($fields, $errors, $form->_eventId);
 828     //To check if the user is already registered for the event(CRM-2426)
 829     if (!$form->_skipDupeRegistrationCheck) {
 830       self::checkRegistration($fields, $form);
 831     }
 832     //check for availability of registrations.
 833     if (!$form->_allowConfirmation && empty($fields['bypass_payment']) &&
 834       is_numeric($form->_availableRegistrations) &&
 835       CRM_Utils_Array::value('additional_participants', $fields) >= $form->_availableRegistrations
 836     ) {
 837       $errors['additional_participants'] = ts("There is only enough space left on this event for %1 participant(s).", [1 => $form->_availableRegistrations]);
 838     }
 839
 840     $numberAdditionalParticipants = $fields['additional_participants'] ?? 0;
 841
 842     if ($numberAdditionalParticipants && !CRM_Utils_Rule::positiveInteger($fields['additional_participants'])) {
 843       $errors['additional_participants'] = ts('Please enter a whole number for Number of additional people.');
 844     }
 845
 846     // during confirmation don't allow to increase additional participants, CRM-4320
 847     if ($form->_allowConfirmation && $numberAdditionalParticipants &&
 848       is_array($form->_additionalParticipantIds) &&
 849       $numberAdditionalParticipants > count($form->_additionalParticipantIds)
 850     ) {
 851       $errors['additional_participants'] = ts("It looks like you are trying to increase the number of additional people you are registering for. You can confirm registration for a maximum of %1 additional people.", [1 => count($form->_additionalParticipantIds)]);
 852     }
 853
 854     //don't allow to register w/ waiting if enough spaces available.
 855     if (!empty($fields['bypass_payment']) && $form->_allowConfirmation) {
 856       if (!is_numeric($form->_availableRegistrations) ||
 857         (empty($fields['priceSetId']) && CRM_Utils_Array::value('additional_participants', $fields) < $form->_availableRegistrations)
 858       ) {
 859         $errors['bypass_payment'] = ts("You have not been added to the waiting list because there are spaces available for this event. We recommend registering yourself for an available space instead.");
 860       }
 861     }
 862
 863     // priceset validations
 864     if (!empty($fields['priceSetId']) &&
 865      !$form->_requireApproval && !$form->_allowWaitlist
 866      ) {
 867       //format params.
 868       $formatted = self::formatPriceSetParams($form, $fields);
 869       $ppParams = [$formatted];
 870       $priceSetErrors = self::validatePriceSet($form, $ppParams);
 871       $primaryParticipantCount = self::getParticipantCount($form, $ppParams);
 872
 873       //get price set fields errors in.
 874       $errors = array_merge($errors, CRM_Utils_Array::value(0, $priceSetErrors, []));
 875
 876       $totalParticipants = $primaryParticipantCount;
 877       if ($numberAdditionalParticipants) {
 878         $totalParticipants += $numberAdditionalParticipants;
 879       }
 880
 881       if (empty($fields['bypass_payment']) &&
 882         !$form->_allowConfirmation &&
 883         is_numeric($form->_availableRegistrations) &&
 884         $form->_availableRegistrations < $totalParticipants
 885       ) {
 886         $errors['_qf_default'] = ts("Only %1 Registrations available.", [1 => $form->_availableRegistrations]);
 887       }
 888
 889       $lineItem = [];
 890       CRM_Price_BAO_PriceSet::processAmount($form->_values['fee'], $fields, $lineItem);
 891
 892       $minAmt = CRM_Core_DAO::getFieldValue('CRM_Price_DAO_PriceSet', $fields['priceSetId'], 'min_amount');
 893       if ($fields['amount'] < 0) {
 894         $errors['_qf_default'] = ts('Event Fee(s) can not be less than zero. Please select the options accordingly');
 895       }
 896       elseif (!empty($minAmt) && $fields['amount'] < $minAmt) {
 897         $errors['_qf_default'] = ts('A minimum amount of %1 should be selected from Event Fee(s).', [
 898           1 => CRM_Utils_Money::format($minAmt),
 899         ]);
 900       }
 901     }
 902     foreach (CRM_Contact_BAO_Contact::$_greetingTypes as $greeting) {
 903       if ($greetingType = CRM_Utils_Array::value($greeting, $fields)) {
 904         $customizedValue = CRM_Core_PseudoConstant::getKey('CRM_Contact_BAO_Contact', $greeting . '_id', 'Customized');
 905         if ($customizedValue == $greetingType && empty($fields[$greeting . '_custom'])) {
 906           $errors[$greeting . '_custom'] = ts('Custom %1 is a required field if %1 is of type Customized.',
 907             [1 => ucwords(str_replace('_', ' ', $greeting))]
 908           );
 909         }
 910       }
 911     }
 912
 913     // @todo - can we remove the 'is_monetary' concept?
 914     if ($form->_values['event']['is_monetary']) {
 915       if (empty($form->_requireApproval) && !empty($fields['amount']) && $fields['amount'] > 0 &&
 916         !isset($fields['payment_processor_id'])) {
 917         $errors['payment_processor_id'] = ts('Please select a Payment Method');
 918       }
 919
 920       if (self::isZeroAmount($fields, $form)) {
 921         return empty($errors) ? TRUE : $errors;
 922       }
 923
 924       // also return if zero fees for valid members
 925       if (!empty($fields['bypass_payment']) ||
 926         (!$form->_allowConfirmation && ($form->_requireApproval || $form->_allowWaitlist))
 927       ) {
 928         return empty($errors) ? TRUE : $errors;
 929       }
 930       CRM_Core_Payment_Form::validatePaymentInstrument(
 931         $fields['payment_processor_id'],
 932         $fields,
 933         $errors,
 934         (!$form->_isBillingAddressRequiredForPayLater ? NULL : 'billing')
 935       );
 936     }
 937
 938     return empty($errors) ? TRUE : $errors;
 939   }
 940
 941   /**
 942    * Check if profiles are complete when event registration occurs(CRM-9587).
 943    *
 944    * @param array $fields
 945    * @param array $errors
 946    * @param int $eventId
 947    */
 948   public static function checkProfileComplete($fields, &$errors, $eventId) {
 949     $email = '';
 950     foreach ($fields as $fieldname => $fieldvalue) {
 951       if (substr($fieldname, 0, 6) == 'email-' && $fieldvalue) {
 952         $email = $fieldvalue;
 953       }
 954     }
 955
 956     if (!$email && !(!empty($fields['first_name']) && !empty($fields['last_name']))) {
 957       $defaults = $params = ['id' => $eventId];
 958       CRM_Event_BAO_Event::retrieve($params, $defaults);
 959       $message = ts("Mandatory fields (first name and last name, OR email address) are missing from this form.");
 960       $errors['_qf_default'] = $message;
 961     }
 962   }
 963
 964   /**
 965    * Process the form submission.
 966    */
 967   public function postProcess() {
 968     // get the submitted form values.
 969     $params = $this->controller->exportValues($this->_name);
 970
 971     //set as Primary participant
 972     $params['is_primary'] = 1;
 973
 974     if ($this->_values['event']['is_pay_later']
 975       && (!array_key_exists('hidden_processor', $params) || $params['payment_processor_id'] == 0)
 976     ) {
 977       $params['is_pay_later'] = 1;
 978     }
 979     else {
 980       $params['is_pay_later'] = 0;
 981     }
 982
 983     $this->set('is_pay_later', $params['is_pay_later']);
 984
 985     // assign pay later stuff
 986     $this->_params['is_pay_later'] = CRM_Utils_Array::value('is_pay_later', $params, FALSE);
 987     $this->assign('is_pay_later', $params['is_pay_later']);
 988     $this->assign('pay_later_text', $params['is_pay_later'] ? $this->_values['event']['pay_later_text'] : NULL);
 989     $this->assign('pay_later_receipt', $params['is_pay_later'] ? $this->_values['event']['pay_later_receipt'] : NULL);
 990
 991     if (!$this->_allowConfirmation) {
 992       // check if the participant is already registered
 993       if (!$this->_skipDupeRegistrationCheck) {
 994         $params['contact_id'] = self::getRegistrationContactID($params, $this, FALSE);
 995       }
 996     }
 997
 998     if (!empty($params['image_URL'])) {
 999       CRM_Contact_BAO_Contact::processImageParams($params);
1000     }
1001
1002     //carry campaign to partcipants.
1003     if (array_key_exists('participant_campaign_id', $params)) {
1004       $params['campaign_id'] = $params['participant_campaign_id'];
1005     }
1006     else {
1007       $params['campaign_id'] = $this->_values['event']['campaign_id'] ?? NULL;
1008     }
1009
1010     //hack to allow group to register w/ waiting
1011     $primaryParticipantCount = self::getParticipantCount($this, $params);
1012
1013     $totalParticipants = $primaryParticipantCount;
1014     if (!empty($params['additional_participants'])) {
1015       $totalParticipants += $params['additional_participants'];
1016     }
1017     if (!$this->_allowConfirmation && !empty($params['bypass_payment']) &&
1018       is_numeric($this->_availableRegistrations) &&
1019       $totalParticipants > $this->_availableRegistrations
1020     ) {
1021       $this->_allowWaitlist = TRUE;
1022       $this->set('allowWaitlist', TRUE);
1023     }
1024
1025     //carry participant id if pre-registered.
1026     if ($this->_allowConfirmation && $this->_participantId) {
1027       $params['participant_id'] = $this->_participantId;
1028     }
1029
1030     $params['defaultRole'] = 1;
1031     if (array_key_exists('participant_role', $params)) {
1032       $params['participant_role_id'] = $params['participant_role'];
1033     }
1034
1035     if (array_key_exists('participant_role_id', $params)) {
1036       $params['defaultRole'] = 0;
1037     }
1038     if (empty($params['participant_role_id']) &&
1039       $this->_values['event']['default_role_id']
1040     ) {
1041       $params['participant_role_id'] = $this->_values['event']['default_role_id'];
1042     }
1043
1044     $config = CRM_Core_Config::singleton();
1045     $params['currencyID'] = $config->defaultCurrency;
1046
1047     if ($this->_values['event']['is_monetary']) {
1048       // we first reset the confirm page so it accepts new values
1049       $this->controller->resetPage('Confirm');
1050
1051       //added for discount
1052       $discountId = CRM_Core_BAO_Discount::findSet($this->_eventId, 'civicrm_event');
1053       $params['amount_level'] = $this->getAmountLevel($params, $discountId);
1054       if (!empty($this->_values['discount'][$discountId])) {
1055         $params['discount_id'] = $discountId;
1056         $params['amount'] = $this->_values['discount'][$discountId][$params['amount']]['value'];
1057       }
1058       elseif (empty($params['priceSetId'])) {
1059         if (!empty($params['amount'])) {
1060           $params['amount'] = $this->_values['fee'][$params['amount']]['value'];
1061         }
1062         else {
1063           $params['amount'] = '';
1064         }
1065       }
1066       else {
1067         $lineItem = [];
1068         CRM_Price_BAO_PriceSet::processAmount($this->_values['fee'], $params, $lineItem);
1069         if ($params['tax_amount']) {
1070           $this->set('tax_amount', $params['tax_amount']);
1071         }
1072         $submittedLineItems = $this->get('lineItem');
1073         if (!empty($submittedLineItems) && is_array($submittedLineItems)) {
1074           $submittedLineItems[0] = $lineItem;
1075         }
1076         else {
1077           $submittedLineItems = [$lineItem];
1078         }
1079         $submittedLineItems = array_filter($submittedLineItems);
1080         $this->set('lineItem', $submittedLineItems);
1081         $this->set('lineItemParticipantsCount', [$primaryParticipantCount]);
1082       }
1083
1084       $this->set('amount', $params['amount']);
1085       $this->set('amount_level', $params['amount_level']);
1086
1087       // generate and set an invoiceID for this transaction
1088       $invoiceID = md5(uniqid(rand(), TRUE));
1089       $this->set('invoiceID', $invoiceID);
1090
1091       if ($this->_paymentProcessor) {
1092         $payment = $this->_paymentProcessor['object'];
1093         $payment->setBaseReturnUrl('civicrm/event/register');
1094       }
1095
1096       // ContributeMode is a deprecated concept. It is short-hand for a bunch of
1097       // assumptions we are working to remove.
1098       $this->set('contributeMode', 'direct');
1099
1100       if ($this->_values['event']['is_monetary']) {
1101         $params['currencyID'] = $config->defaultCurrency;
1102         $params['invoiceID'] = $invoiceID;
1103       }
1104       $this->_params = $this->get('params');
1105       // Set the button so we know what
1106       $params['button'] = $this->controller->getButtonName();
1107       if (!empty($this->_params) && is_array($this->_params)) {
1108         $this->_params[0] = $params;
1109       }
1110       else {
1111         $this->_params = [];
1112         $this->_params[] = $params;
1113       }
1114       $this->set('params', $this->_params);
1115       if ($this->_paymentProcessor &&
1116         // Actually we don't really need to check if it supports pre-approval - we could just call
1117         // it regardless as the function we call re-acts tot the rests of the preApproval call.
1118         $this->_paymentProcessor['object']->supports('preApproval')
1119         && !$this->_allowWaitlist &&
1120         !$this->_requireApproval
1121       ) {
1122
1123         // The concept of contributeMode is deprecated - but still needs removal from the message templates.
1124         $this->set('contributeMode', 'express');
1125
1126         // Send Event Name & Id in Params
1127         $params['eventName'] = $this->_values['event']['title'];
1128         $params['eventId'] = $this->_values['event']['id'];
1129
1130         $params['cancelURL'] = CRM_Utils_System::url('civicrm/event/register',
1131           "_qf_Register_display=1&qfKey={$this->controller->_key}",
1132           TRUE, NULL, FALSE
1133         );
1134         if (!empty($params['additional_participants'])) {
1135           $urlArgs = "_qf_Participant_1_display=1&rfp=1&qfKey={$this->controller->_key}";
1136         }
1137         else {
1138           $urlArgs = "_qf_Confirm_display=1&rfp=1&qfKey={$this->controller->_key}";
1139         }
1140         $params['returnURL'] = CRM_Utils_System::url('civicrm/event/register',
1141           $urlArgs,
1142           TRUE, NULL, FALSE
1143         );
1144         $params['invoiceID'] = $invoiceID;
1145
1146         $params['component'] = 'event';
1147         // This code is duplicated multiple places and should be consolidated.
1148         $params = $this->prepareParamsForPaymentProcessor($params);
1149         $this->handlePreApproval($params);
1150       }
1151       elseif ($this->_paymentProcessor &&
1152         (int) $this->_paymentProcessor['billing_mode'] & CRM_Core_Payment::BILLING_MODE_NOTIFY
1153       ) {
1154         // The concept of contributeMode is deprecated - but still needs removal from the message templates.
1155         $this->set('contributeMode', 'notify');
1156       }
1157     }
1158     else {
1159       $params['description'] = ts('Online Event Registration') . ' ' . $this->_values['event']['title'];
1160
1161       $this->_params = [];
1162       $this->_params[] = $params;
1163       $this->set('params', $this->_params);
1164
1165       if (
1166         empty($params['additional_participants'])
1167       // CRM-11182 - Optional confirmation screen
1168         && !$this->_values['event']['is_confirm_enabled']
1169       ) {
1170         $this->processRegistration($this->_params);
1171       }
1172     }
1173
1174     // If registering > 1 participant, give status message
1175     if (!empty($params['additional_participants'])) {
1176       $statusMsg = ts('Registration information for participant 1 has been saved.');
1177       CRM_Core_Session::setStatus($statusMsg, ts('Saved'), 'success');
1178     }
1179   }
1180
1181   /**
1182    * Method to check if the user is already registered for the event.
1183    * and if result found redirect to the event info page
1184    *
1185    * @param array $fields
1186    *   The input form values(anonymous user).
1187    * @param CRM_Event_Form_Registration_Register $form
1188    *   Event data.
1189    * @param bool $isAdditional
1190    *   Treat isAdditional participants a bit differently.
1191    *
1192    * @return int
1193    */
1194   public static function checkRegistration($fields, $form, $isAdditional = FALSE) {
1195     // CRM-3907, skip check for preview registrations
1196     // CRM-4320 participant need to walk wizard
1197     if (
1198       ($form->getPaymentMode() === 'test' || $form->_allowConfirmation)
1199     ) {
1200       return FALSE;
1201     }
1202
1203     $contactID = self::getRegistrationContactID($fields, $form, $isAdditional);
1204
1205     if ($contactID) {
1206       $participant = new CRM_Event_BAO_Participant();
1207       $participant->contact_id = $contactID;
1208       $participant->event_id = $form->_values['event']['id'];
1209       if (!empty($fields['participant_role']) && is_numeric($fields['participant_role'])) {
1210         $participant->role_id = $fields['participant_role'];
1211       }
1212       else {
1213         $participant->role_id = $form->_values['event']['default_role_id'];
1214       }
1215       $participant->is_test = 0;
1216       $participant->find();
1217       // Event#30 - Anyone whose status type has `is_counted` OR is on the waitlist should be considered as registered.
1218       $statusTypes = CRM_Event_PseudoConstant::participantStatus(NULL, 'is_counted = 1') + CRM_Event_PseudoConstant::participantStatus(NULL, "name = 'On waitlist'");
1219       while ($participant->fetch()) {
1220         if (array_key_exists($participant->status_id, $statusTypes)) {
1221           if (!$isAdditional && !$form->_values['event']['allow_same_participant_emails']) {
1222             $registerUrl = CRM_Utils_System::url('civicrm/event/register',
1223               "reset=1&id={$form->_values['event']['id']}&cid=0"
1224             );
1225             if ($form->_pcpId) {
1226               $registerUrl .= '&pcpId=' . $form->_pcpId;
1227             }
1228             $registrationType = (CRM_Event_PseudoConstant::getKey('CRM_Event_BAO_Participant', 'participant_status_id', 'On waitlist') == $participant->status_id) ? 'waitlisted' : 'registered';
1229             if ($registrationType == 'waitlisted') {
1230               $status = ts("It looks like you are already waitlisted for this event. If you want to change your registration, or you feel that you've received this message in error, please contact the site administrator.");
1231             }
1232             else {
1233               $status = ts("It looks like you are already registered for this event. If you want to change your registration, or you feel that you've received this message in error, please contact the site administrator.");
1234             }
1235             $status .= ' ' . ts('You can also <a href="%1">register another participant</a>.', [1 => $registerUrl]);
1236             CRM_Core_Session::singleton()->setStatus($status, '', 'alert');
1237             $url = CRM_Utils_System::url('civicrm/event/info',
1238               "reset=1&id={$form->_values['event']['id']}&noFullMsg=true"
1239             );
1240             if ($form->_action & CRM_Core_Action::PREVIEW) {
1241               $url .= '&action=preview';
1242             }
1243
1244             if ($form->_pcpId) {
1245               $url .= '&pcpId=' . $form->_pcpId;
1246             }
1247
1248             CRM_Utils_System::redirect($url);
1249           }
1250
1251           if ($isAdditional) {
1252             $status = ts("It looks like this participant is already registered for this event. If you want to change your registration, or you feel that you've received this message in error, please contact the site administrator.");
1253             CRM_Core_Session::singleton()->setStatus($status, '', 'alert');
1254             return $participant->id;
1255           }
1256         }
1257       }
1258     }
1259   }
1260
1261 }