<?php

use CRM_Nbrgeneralobservation_ExtensionUtil as E;

/**
 * Form controller class
 *
 * @see https://docs.civicrm.org/dev/en/latest/framework/quickform/
 */
class CRM_Nbrgeneralobservation_Form_NbrGenObservations extends CRM_Core_Form {

  public $_contactId;

  private $_currentData = [];

  public function preProcess() {
    // Perform any setup tasks you may need

    // Import utils.js
    CRM_Core_Resources::singleton()->addScriptFile('nbrgeneralobservation', 'templates/CRM/Nbrgeneralobservation/utils.js');
    // Get contact id

    $contactId = CRM_Utils_Request::retrieve('cid', 'Integer');
    $this->_contactId = $contactId;
    if ($contactId) {
      $this->_currentData = CRM_Nbrgeneralobservation_BAO_NbrGenObservations::getWithId($contactId);
    }
    $url = CRM_Utils_System::url("civicrm/nbrgeneralobservation/page/nbrgenobservations", ['cid' => $contactId], TRUE);
    CRM_Core_Session::singleton()->pushUserContext($url);
    $title = ts("Edit General Observations");
    CRM_Utils_System::setTitle($title);
    $this->assign('contactId', $contactId);
  }

  public function buildQuickForm() {
    $this->add('hidden', 'entity_id');
    $this->add('select', 'nvgo_school_id', E::ts('School list'),
      CRM_Nbrschools_BAO_NbrSchool::getNbrSchoolValues(), FALSE,
      ['class' => 'crm-select2', 'placeholder' => ' - select school']);

    $this->add('select', 'nvgo_ethnicity_id', E::ts('Ethnicity'),
      CRM_Nihrbackbone_Utils::getOptionValueList('nihr_ethnicity'), FALSE,
      ['class' => 'crm-select2', 'placeholder' => ' - select ethnicity',]);


    $this->add('number', 'nvgo_weight_kg', 'Weight (kg)', ["min"=>0], FALSE);
    $this->add('number', 'nvgo_height_m', 'Height (m)', ["min"=>0, "step"=>0.1], FALSE);
    $this->add('number', 'nvgo_bmi', 'BMI', ['disabled' => TRUE], FALSE);


    $this->add('select', 'nvgo_hand_preference', E::ts('Hand Preference'),
      CRM_Nihrbackbone_Utils::getOptionValueList('nbr_hand_preference'), FALSE,
      ['class' => 'crm-select2', 'placeholder' => ' - select hand']);

    $this->add('select', 'nvgo_abo_group', E::ts('ABO group'),
      CRM_Nihrbackbone_Utils::getOptionValueList('nbr_abo_group'), FALSE,
      ['class' => 'crm-select2', 'placeholder' => ' - select ABO group']);

    $this->add('select', 'nvgo_rhesus_factor', E::ts('Rhesus factor'),
      CRM_Nihrbackbone_Utils::getOptionValueList('nbr_rhesus_factor'), FALSE,
      ['class' => 'crm-select2', 'placeholder' => ' - select rhesus factor']);

    $this->addYesNo(
      'nvgo_probably_consanguineous',
      'Probably consanguineous',
      TRUE,
      FALSE,
      []
    );

    $this->addYesNo(
      'nvgo_family_history',
      'Family history (close family members with same or similar conditions)',
      TRUE,
      FALSE,
      []
    );
    $this->add(
      'checkbox', // field type
      'nvgo_proband', // field name
      'Proband', // field label(),
      [1 => 'proband']
    );
    $this->addButtons([
      [
        'type' => 'submit',
        'name' => E::ts("Submit"),
        'isDefault' => TRUE,
      ],
    ]);

    $this->add('number', 'weight_stone', "", ["min"=>0], FALSE);
    $this->add('number', 'weight_lbs', "", ["min"=>0 ,"max"=>14], FALSE);

    $this->add('number', 'height_ft', "", ["min"=>0,], FALSE);
    $this->add('number', 'height_in', "", ["min"=>0,"max"=>13], FALSE);

    // export form elements
    $this->assign('elementNames', $this->getRenderableElementNames());
    parent::buildQuickForm();
  }

  /** Form valiation rules  */
  public function addRules() {
    $this->addFormRule([
      'CRM_Nbrgeneralobservation_Form_NbrGenObservations',
      'validateHeightAndWeight',
    ]);
  }

  public function validateHeightAndWeight($values) {
    $errors = [];
    // Greater than zero
    $heightMin = 0;
    $heightMax = 4;
    $weightMin = 0;
    $weightMax = 641;
    if ($values['nvgo_height_m'] < $heightMin) {
      $errors['nvgo_height_m'] = ts("Height must not be negative");
    }
    elseif ($values['nvgo_height_m'] > $heightMax) {
      $errors['nvgo_height_m'] = ts("Height must not be higher than " . $heightMax . ".");
    }
    if ($values['nvgo_weight_kg'] < $weightMin) {
      $errors['nvgo_weight_kg'] = ts("Weight must not be negative");
    }
    elseif ($values['nvgo_weight_kg'] > $weightMax) {
      $errors['nvgo_weight_kg'] = ts("Weight must not be higher than " . $weightMax . " .");
    }

    if(is_nan($values['nvgo_bmi'])){
      $errors['nvgo_bmi'] = ts("Bmi must be a number");

    }
    return empty($errors) ? TRUE : $errors;
  }

  /** Method to set defaults for edit - @return array|NULL|void */
  public function setDefaultValues() {
    $defaults = ['entity_id' => $this->_contactId];

    if ($this->_action == CRM_Core_Action::UPDATE) {
      foreach ($this->_currentData as $key => $value) {
        $defaults[$key] = $value;
      }
    }
    $weightHeightArr= self::calcWeightHeightArray($defaults['nvgo_weight_kg'], $defaults['nvgo_height_m']);
    $defaults['height_ft']= $weightHeightArr['height_ft'];
    $defaults['height_in']= $weightHeightArr['height_in'];

    $defaults['weight_stone']= $weightHeightArr['weight_stone'];
    $defaults['weight_lbs']= $weightHeightArr['weight_lbs'];
    return $defaults;
  }

  public function postProcess() {

    // I would use API4 calls here? And base it on the form action?
    if ($this->_action == CRM_Core_Action::UPDATE) {
      $values = $this->exportValues();
      $contactId = $values['entity_id'];

      $contactExists = CRM_Nbrgeneralobservation_BAO_NbrGenObservations::contactExists($contactId);
      Civi::log()->info("contact exists is " . $contactExists);

      if ($contactExists) {
        CRM_Nbrgeneralobservation_BAO_NbrGenObservations::add($values);
        CRM_Core_Session::setStatus(E::ts("Successfully updated observations."));
      }
      else {
        CRM_Core_Session::setStatus(E::ts("No contact matching this id found"));
      }
      parent::postProcess();
    }
  }

  function calcWeightHeightArray($weight_kg, $height_m){
    $weight_tolbs = intval($weight_kg / 0.453592);
    $weight_stone = intval($weight_tolbs / 14);
    $weight_lbs = ($weight_tolbs / 14 - $weight_stone) * 14;

    $height_toFt = $height_m * 3.28084;
    $height_ft = intval($height_toFt);
    $height_in = round(12 * ($height_toFt - $height_ft));
    $weightHeightArr= [
      "weight_stone"=> $weight_stone,
      "weight_lbs"=>$weight_lbs,
      "height_ft"=> $height_ft,
      "height_in"=>$height_in
    ];
    return $weightHeightArr;

  }

  /**
   * Get the fields/elements defined in this form.
   *
   * @return array (string)
   */
  public function getRenderableElementNames() {
    // The _elements list includes some items which should not be
    // auto-rendered in the loop -- such as "qfKey" and "buttons".  These
    // items don't have labels.  We'll identify renderable by filtering on
    // the 'label'.
    $elementNames = [];
    foreach ($this->_elements as $element) {
      /** @var HTML_QuickForm_Element $element */
      $label = $element->getLabel();
      if (!empty($label)) {
        $elementNames[] = $element->getName();
      }
    }
    return $elementNames;
  }

}