<?php


namespace Drupal\cfp_payment_request\Form;

use Drupal\cfp_payment_request\Entity\PaymentRequestItem;
use Drupal\cfp_payment_request\Entity\PaymentRequestItemType;
use Drupal\Component\Serialization\Json;
use Drupal\Core\Entity\Display\EntityFormDisplayInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\inline_entity_form\Form\EntityInlineForm;

class PaymentRequestItemInlineForm extends EntityInlineForm {

  const DATA_SOURCE_CLASS = 'pr-data-source';
  const DATA_COPY_NAME = 'data-pr-set';
  const DATA_NAME_STARTS_WITH = 'data-pr-name-starts-with';

  /**
   * {@inheritdoc}
   */
  public function entityForm(array $entity_form, FormStateInterface $form_state) {
    $parent_entity = $form_state->getFormObject()->getEntity();
    if ($parent_entity->getEntityTypeId() === 'cfp_payment_request') {
      $entity_form['#entity']->setParent($parent_entity);
    }
    $entity = $entity_form['#entity'];
    $form_display = $this->getFormDisplay($entity, $entity_form['#form_mode']);

    $this->extraFields($entity_form, $entity, $form_display);

    $entity_form = parent::entityForm($entity_form, $form_state);

    $this->attachValuesCopyBehaviour($entity_form, $parent_entity);

    return $entity_form;
  }

  /**
   * {@inheritdoc}
   */
  public function isTableDragEnabled($element) {
    return FALSE;
  }

  protected function extraFields(&$form, PaymentRequestItem $entity, EntityFormDisplayInterface $form_display) {
    if ($form_display->getComponent('item_support_intensity') && $form_display->getComponent('cost_item_name')) {
      $form['#after_build'][] = '\Drupal\cfp_payment_request\Form\PaymentRequestItemInlineForm::statesToSupportIntensity';
      $form['item_support_intensity'] = [
        '#type' => 'container',
      ];
      $entity = $form['#entity'];
      if (($pr = $entity->getParent()) && ($cfp = $pr->getParent())) {
        $name = 'will_be_build_after';

        /** @var \Drupal\pos_entity_cost_item\AdditionalCostItem $items */
        $items = $cfp->getWrappedAllItems(FALSE, TRUE);

        foreach ($items as $item_id => $item) {
          $form['item_support_intensity'][$item_id] = [
            '#type' => 'container',
            'contents' => [
              '#markup' => '<label>Tételhez kapcsolódó támogatási intenzitás: </label><span class="price">' . $item->getSupportRatio() . '%</span>'
            ],
            '#states' => [
              'visible' => [
                $name => ['value' => $item_id],
              ],
            ],
            '#attributes' => [
              'class' => ['item-support-intensity']
            ],
          ];
        }
      }
    }
    if ($form_display->getComponent('participation_type')) {
      $payment_request = $entity->getParent();

      $cfp = $entity->getCfp();
      $cost_item = $cfp->getCostItemEntities();
      $cost_item = reset($cost_item);
      $own_participation = $cost_item->get('cost_item_participation');
      if ($own_participation_value = $own_participation->value) {
        $own_participation_definition = $cost_item->getFieldDefinition('cost_item_participation');
        $own_participation_label = $own_participation_definition->getSettings()['allowed_values'][$own_participation_value];
      }
      $form['participation_type'] = [
        '#type' => 'markup',
        '#markup' => '<div class="own-participation"><b>Vrsta sopstvenog učešća: </b>' . $own_participation_label . '</div>',
        '#weight' => 10,
      ];
    }

    $payment_request_item_type = PaymentRequestItemType::load($entity->bundle());

    if (!empty($payment_request_item_type->get('documents_helptext')) && $form_display->getComponent('documents_helptext')) {
      $helptext = $payment_request_item_type->get('documents_helptext');
      $form['documents_helptext'] = [
        '#type' => 'container',
        'helptext' => [
          '#type' => 'markup',
          '#markup' => '<div class="documents_helptext">' . $helptext . '</div>',
        ],
      ];
    }


  }

  public static function statesToSupportIntensity($form, FormStateInterface $form_state) {
    if (isset($form['cost_item_name']['widget']['#name']) && isset($form['item_support_intensity'])) {
      $name = $form['cost_item_name']['widget']['#name'];
      foreach ($form['item_support_intensity'] as $item_id => &$element) {
        if (isset($element['#states']['visible'])) {
          $element['#states']['visible'] = [
            '[name="'  . $name . '"]' => ['value' => $item_id],
          ];
        }

      }
    }
//    if (isset($form['cost_item_name']['widget']['#name'])) {
//      $entity = $form['#entity'];
//      if (($pr = $entity->getParent()) && ($cfp = $pr->getParent())) {
//        $name = $form['cost_item_name']['widget']['#name'];
//        /** @var \Drupal\pos_entity_cost_item\AdditionalCostItem $items */
//        $items = $cfp->getWrappedAllItems(FALSE, TRUE);
//
//        foreach ($items as $item_id => $item) {
//
//          $form['item_support_intensity'][$item_id] = [
//            '#type' => 'container',
//            'contents' => [
//              '#markup' => $item->getSupportRatio(),
//            ],
//            '#states' => [
//              'visible' => [
//                '[name="'  . $name . '"]' => ['value' => $item_id],
//              ],
//            ]
//          ];
//        }
//      }
//    }
    return $form;
  }

  /**
   * @param $entity_form
   *
   */
  protected function attachValuesCopyBehaviour(&$entity_form, $parent_entity) {
    if (isset($entity_form['cost_item_name']['widget'])) {
      $entity_form['cost_item_name']['widget']['#attributes']['class'][] = self::DATA_SOURCE_CLASS;
      $entity_form['cost_item_name']['widget']['#after_build'][] = '\Drupal\cfp_payment_request\Form\PaymentRequestItemInlineForm::constructNameStartsWithAfterBuild';
    }
    else {
      return;
    }

    /** @var \Drupal\pos_entity_cfp\Entity\Cfp $cfp */
    $cfp = $parent_entity->getParent();

    $wrapped_items = $cfp->getWrappedAllItems(FALSE, TRUE);
    /**
     * Second parameter is either method for wrapped item, or field name of cost
     *   item.
     *
     * @var $field_mapper
     */
    $field_mapper = [
      'cf_manufacturer' => 'cost_item_manufacturer',
      'cf_unique_item_id' => 'cost_item_identificator',
      'cf_distributor' => 'cost_item_distributor',
      'cf_distributor_vat_number' => 'cost_item_vat_number',
      'cf_distributor_bank_account_num' => 'cost_item_distributor_account',
      'item_support' => 'getSupportValue',
      'item_pay_off' => 'getEligibleCost',
      'item_net_unit' => 'cost_item_neto_price',
      'item_unit_vat' => 'cost_item_vat',
      'item_quantity' => 'cost_item_quantity',
    ];

    foreach ($field_mapper as $value_field_name => $method_or_field) {
      $values = [];
      if (!isset($entity_form[$value_field_name]['widget'][0]['value'])) {
        continue;
      }
      foreach ($wrapped_items as $id => $wrapped_item) {
        if (method_exists($wrapped_item, $method_or_field)) {
//          $wrapped_item->getEligibleCost();
          $values[$id] = $wrapped_item->$method_or_field();
        }
        elseif ($wrapped_item->getCostItem()?->hasField($method_or_field)) {
          $values[$id] = $wrapped_item->getCostItem()->get($method_or_field)->value;
        }
      }
      $entity_form[$value_field_name]['widget'][0]['value']['#attributes'][self::DATA_COPY_NAME] = Json::encode($values);
    }

    $entity_form['#attached']['library'][] = 'cfp_payment_request/pr_item_autopopulate.js';
  }

  /**
   * Constructs name starts with for inline entity form.
   */
  public static function constructNameStartsWithAfterBuild($element, FormStateInterface $form_state) {
    $name_starts_with = explode('['. $element['#field_name'] . ']', $element['#name'])[0];
    $element['#attributes'][self::DATA_NAME_STARTS_WITH] = $name_starts_with;
    return $element;
  }

}