<?php

namespace Drupal\customeredit\Form;

use Drupal\Core\Ajax\AjaxResponse;
use Drupal\Core\Ajax\HtmlCommand;
use Drupal\Core\Ajax\ReplaceCommand;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\customeredit\CustomerText;
use Drupal\customeredit\CustomerTextsStorage;
use Drupal\stofa\CartValidateEvent;
use Drupal\stofa\Service\EnvVars;
use Drupal\stofa\Service\Stofa;
use Drupal\stofa\StofaEntities;
use Drupal\stofa_api_sows\Plugin\StofaAPI\Sows\SowsAPI;
use Drupal\stofa_tv\OffersBuilder;
use Drupal\stofa_tv\TVEntities;
use Symfony\Component\DependencyInjection\ContainerInterface;

class EditTextForm extends FormBase {

  /**
   * @var CustomerTextsStorage
   */
  protected $storage;

  public static function create(ContainerInterface $container) {
    $storage = $container->get('customeredit.texts.storage');
    return new static($storage);
  }

  public function __construct($storage) {
    $this->storage = $storage;
  }

  /**
   * Returns a unique string identifying the form.
   *
   * @return string
   *   The unique string identifying the form.
   */
  public function getFormId() {
    return 'customeredit_edit_form';
  }

  /**
   * Form constructor.
   *
   * @param array $form
   *   An associative array containing the structure of the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   * @param string $machine_name
   *
   * @return array The form structure.
   * The form structure.
   */
  public function buildForm(array $form, FormStateInterface $form_state, $machine_name = '') {
    $text = new CustomerText($machine_name);
    $config = $this->config('customeredit.texts.settings');

    $form = [
      '#title' => $this->t('Edit %label', ['%label' => $text->getTitle()])
    ];

    $form['title'] = [
      '#type' => 'item',
      '#title' => $text->getTitle(),
      '#description' => $text->getDescription(),
    ];

    $form['machine_name'] = [
      '#type' => 'hidden',
      '#value' => $machine_name,
    ];

    $form['list'] = array(
      '#type' => 'table',
      // TableSelect: Injects a first column containing the selection widget into
      // each table row.
      // Note that you also need to set #tableselect on each form submit button
      // that relies on non-empty selection values (see below).
      '#tableselect' => FALSE,
    );
    // Build the table rows and columns.
    // The first nested level in the render array forms the table row, on which you
    // likely want to set #attributes and #weight.
    // Each child element on the second level represents a table column cell in the
    // respective table row, which are render elements on their own. For single
    // output elements, use the table cell itself for the render element. If a cell
    // should contain multiple elements, simply use nested sub-keys to build the
    // render element structure for drupal_render() as you would everywhere else.

    $n = 0;
    switch($text->getType()) {
      case 'textarea':
        $form['list'][$n]['text'] = [
          '#type' => 'textarea',
          '#default_value' => $text->getText(),
        ];
        break;
      case 'text_format':
        $form['list'][$n]['text'] = [
          '#type' => 'text_format',
          '#allowed_formats' => [$config->get('text_format') ?: "full_html"],
          '#default_value' => $text->getText(),
        ];
        break;
      case 'external-link':
        $form['list'][$n]['text'] = [
          '#type' => 'url',
          '#options' => ['external' => TRUE],
          '#default_value' => $text->getText(),
        ];
        break;
      case 'button':
      case 'link':
        $form['list'][$n]['title'] = [
          '#type' => 'textfield',
          '#title' => t('Title'),
          '#default_value' => $text->getValue('title'),
        ];
        $form['list'][$n]['url'] = [
          '#type' => 'textfield',
          '#title' => t('URL'),
          '#default_value' => $text->getValue('url'),
        ];
        break;
      default:
        $form['list'][$n]['text'] = [
          '#type' => 'textfield',
          '#default_value' => $text->getText(),
        ];
        break;
    }
    if (\Drupal::moduleHandler()->moduleExists('token')) {
      if ($text->getType() != 'button' && $text->getType() != 'link') {
        $form['list'][$n]['text']['#element_validate'] = ['token_element_validate'];
        $form['list'][$n]['text']['#token_types'] = $text->getTokenTypes();
      } else {
        $form['list'][$n]['title']['#element_validate'] = ['token_element_validate'];
        $form['list'][$n]['title']['#token_types'] = $text->getTokenTypes();
        $form['list'][$n]['url']['#element_validate'] = ['token_element_validate'];
        $form['list'][$n]['url']['#token_types'] = $text->getTokenTypes();
      }
      $form['token_help'] = array(
        '#theme' => 'token_tree_link',
        '#token_types' => $text->getTokenTypes(),
      );
    }

    $form['actions'] = array('#type' => 'actions');
    $form['actions']['submit'] = array(
      '#type' => 'submit',
      '#value' => t('Save changes'),
    );

    return $form;
  }

    /**
   * Form validation handler.
   *
   * @param array $form
   *   An associative array containing the structure of the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    $machine_name = $form_state->getValue('machine_name');
    $text = new CustomerText($machine_name);
    switch($text->getType()) {
      case 'url':
        if ($form_state->getValue('text') == '') {
        } elseif (customeredit_textToUrl($form_state->getValue('text')) === FALSE) {
          $form_state->setErrorByName('text', $this->t('Invalid input'));
        }
        break;
      case 'button':
      case 'link':
        if ($form_state->getValue('url') == '') {
        } elseif (customeredit_textToUrl($form_state->getValue('url')) === FALSE) {
          $form_state->setErrorByName('url', $this->t('Invalid input'));
        }
      default:
    }
  }

  /**
   * Form submission handler.
   *
   * @param array $form
   *   An associative array containing the structure of the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $machine_name = $form_state->getValue('machine_name');
    $text = new CustomerText($machine_name);

    foreach ($form_state->getValue('list') as $item) {
      switch ($text->getType()) {
        case 'button':
        case 'link':
          if (is_string($item['title'])) {
            $text->setValue('title', $item['title']);
          }
          elseif (is_array($item['title'])) {
            $text->setValue('title', $item['title']['value']);
          }
          if (is_string($item['url'])) {
            $text->setValue('url', $item['url']);
          }
          elseif (is_array($item['url'])) {
            $text->setValue('url', $item['url']['value']);
          }
          break;
        default:
          if (is_string($item['text'])) {
            $text->setText($item['text']);
          }
          elseif (is_array($item['text'])) {
            $text->setText($item['text']['value']);
          }
          break;
      }
      $text->save();
      if ($text->mustClearCache()) {
        \Drupal::service('cache_tags.invalidator')->invalidateAll();
      }
    }

    $categories = $this->storage->getCategories();
    if ($text->getCategory() == $categories[0]) {
      $form_state->setRedirect('customertexts.list');
    } else {
      $transliteration = \Drupal::service('transliteration');
      $trans = strtolower(str_replace(' ', '_', $transliteration->transliterate($text->getCategory())));
      $form_state->setRedirect('customertexts.list.category', ['category_id' => $trans]);
    }
  }
}