<?php

namespace modules\forms\code;

/**
 * Description of AbstractForm
 *
 * @author maros
 */
abstract class AbstractForm {

    protected ?\app\classes\Translator $t;
    private $htmlInputKeyCounter = 0;
    private $token;
    private $name = 'form';
    private $checkRequired = true;
    private \PFBC\View $view;

    public function __construct() {
        $this->t = \app\classes\Translator::getInstance();
        $this->token = getUniqueId();
        $this->view = new \PFBC\View\ThreeColumns();
    }

    /**
     * @return \PFBC\Form
     */
    protected function getNewForm($name, $ajaxMethod, $view): \PFBC\Form {
        $form = new \PFBC\Form("form-" . $name);
        $form->configure(array(
            "prevent" => array("bootstrap", "jQuery", "focus"),
            "ajax" => 1,
            "ajaxCallback" => "",
            "action" => "",
            "view" => $view,
            "ajaxMethod" => $ajaxMethod,
            "autocomplete" => "off",
            "class" => "needs-validation form-" . $name,
        ));

        return $form;
    }

    protected function getNextHtmlInputKey() {
        $this->htmlInputKeyCounter++;
        return "html-" . $this->htmlInputKeyCounter;
    }

    public function getToken() {
        return $this->token;
    }

    public function render() {
        $form = $this->getNewForm($this->name, 'submitForm($(this));', $this->getView());
        $form->addElement(new \PFBC\Element\HTML('<div class="row">'));
        $elements = $this->getAllElements();
        foreach ($elements as $element) {
            if (isset($element['pfbc'])) {
                $form->addElement($element['pfbc']);
            }
        }

        $form->addElement(new \PFBC\Element\HTML('</div>'));
        $form->render();
    }

    /**
     * @return array
     */
    abstract function getAllElements();

    public function getFrontendData($itemData, $prefix = '') {
        $data = [];
        $allElements = $this->getAllElements();
        foreach ($allElements as $key => $element) {
            if (isset($element['controller']) && $element['db'] && $element['pfbc']) {
                $controllerClass = $element['controller'];
                $controller = new $controllerClass(isset($element['pfbc']) ? $element['pfbc'] : null, $itemData);
                $key = str_replace("[]", "", $element['pfbc']->getAttribute('name'));
                if (array_key_exists($key, $itemData)) {
                    $data[$key] = $controller->getFrontendValue($itemData[$key]);
                }
            }
        }

        if ($prefix) {
            foreach ($data as $key => $val) {
                $data[$prefix . '_' . $key] = $val;
                unset($data[$key]);
            }
        }

        return $data;
    }

    public function prepareDbData(array $post) {
        $data = [];
        $allElements = $this->getAllElements();
        $allElements = $this->updateIsRequired($allElements, $post);
        foreach ($allElements as $key => $element) {
            if (isset($element['controller'])) {
                $controllerClass = $element['controller'];
                /** @var \modules\forms\code\AbstractController $controller */
                $controller = new $controllerClass(isset($element['pfbc']) ? $element['pfbc'] : null, $post);
                $value = isset($post[str_replace('[]', '', $element['pfbc']?->getAttribute('name'))]) ? $post[str_replace('[]', '', $element['pfbc']?->getAttribute('name'))] : false;
                $validation = $controller->validate($value);
                if ($validation !== true) {
                    throw new \Exception($validation . " " . $element['pfbc']?->getLabel() . " <small><i>(" . $element['pfbc']?->getAttribute('name') . ")</i></small>", \app\constants\HttpReponseCodes::HTTP_BAD_REQUEST);
                }
                if ($element['pfbc']?->isRequired()) {
                    if (!is_array($value)) {
                        if ((strlen($value) === 0 || $value === false) && $this->checkRequired) {
                            throw new \Exception($this->t->_get("Chýbajúci povinný paramater") . " " . $element['pfbc']?->getLabel() . " <small><i>(" . $element['pfbc']?->getAttribute('name') . ")</i></small>", \app\constants\HttpReponseCodes::HTTP_BAD_REQUEST);
                        }
                    } else {
                        $isEmpty = true;
                        foreach ($value as $val) {
                            if (strlen($val) !== 0 && $val !== false) {
                                $isEmpty = false;
                                break;
                            }
                        }
                        if ($isEmpty && $this->checkRequired) {
                            throw new \Exception($this->t->_get("Chýbajúci povinný paramater") . " " . $element['pfbc']?->getLabel() . " <small><i>(" . $element['pfbc']?->getAttribute('name') . ")</i></small>", \app\constants\HttpReponseCodes::HTTP_BAD_REQUEST);
                        }
                    }
                }

                if ($element['db']) {
                    $dbValue = $controller->getDbValue($value);
                    if ($dbValue !== null) {
                        $data[str_replace("[]", "", $element['pfbc']?->getAttribute('name'))] = toNonHtml($dbValue);
                    } 
                }
            }
        }

        return $data;
    }

    protected function updateIsRequired(array $elements, $post) {
        return $elements;
    }

    /**
     * @return array
     */
    protected function getTitleElement($title, $h = 5, $hrClass = "", $hClass = "mt-3") {
        return ["db" => false, "pfbc" => new \PFBC\Element\HTML('<div class="col-md-12"><h' . $h . ' class="fw-500 ' . $hClass . '">' . $this->t->_get($title) . '</h' . $h . '><hr class="' . $hrClass . '"></div>')];
    }

    /**
     * @return array
     */
    protected function getNewRowElement() {
        return ["db" => false, "pfbc" => new \PFBC\Element\HTML('<div class="row"></div>')];
    }

    public function getName() {
        return 'form-' . $this->name;
    }

    public function setName(string $name) {
        $this->name = $name;
    }

    public function getView(): \PFBC\View {
        return $this->view;
    }

    public function setView(\PFBC\View $view): void {
        $this->view = $view;
    }
    
    public function setCheckRequired(bool $check) {
        $this->checkRequired = $check;
    }

}