<?php
/**
 * Copyright © Alekseon sp. z o.o.
 * http://www.alekseon.com/
 */
declare(strict_types=1);

namespace Alekseon\CustomFormsFrontend\Model\Template;

use Alekseon\CustomFormsBuilder\Model\FormRecord;

/**
 * Class Filter
 * @package Alekseon\CustomFormsFrontend\Model\Template
 */
class Filter extends \Magento\Email\Model\Template\Filter
{
    /**
     * @var
     */
    private $formRecord;
    /**
     * @var array
     */
    private $formRecordsAttributes = [];

    /**
     * @param array $variables
     * @return Filter|void
     */
    public function setVariables(array $variables)
    {
        if (isset($variables['record'])) {
            $this->setFormRecord($variables['record']);
        }
        parent::setVariables($variables);
    }

    /**
     * @param FormRecord $formRecord
     * @return $this
     */
    public function setFormRecord(FormRecord $formRecord)
    {
        $this->formRecordsAttributes = [];
        $this->formRecord = $formRecord;
        $formRecordsAttributes = $formRecord->getResource()->getAllLoadedAttributes();
        foreach ($formRecordsAttributes as $attribute) {
            $this->formRecordsAttributes[$attribute->getAttributeCode()] = $attribute;
            if ($attribute->getIdentifier()) {
                $this->formRecordsAttributes[$attribute->getIdentifier()] = $attribute;
            }
        }
        return $this;
    }

    /**
     * @return false
     */
    public function getFrontendBlockRepository()
    {
        /**
         * frontend block repository is set by plugin
         */
        return false;
    }

    /**
     * @param $construction
     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
     */
    public function formTitleDirective($construction)
    {
        if (!$this->formRecord) {
            return '';
        }

        return $this->formRecord->getForm()->getTitle();
    }

    /**
     * @param $construction
     */
    public function fieldLabelDirective($construction)
    {
        if (!$this->formRecord) {
            return '';
        }

        $parameters = $this->getParameters($construction[2]);
        if (isset($parameters['id'])) {
            $recordAttribute = $this->getRecordAttribute($parameters['id']);
            if ($recordAttribute) {
                if (isset($parameters['admin'])) {
                    return $recordAttribute->getDefaultFrontendLabel();
                } else {
                    return $recordAttribute->getFrontendLabel();
                }
            }
        }

        return '';
    }

    /**
     * @param $construction
     * @return string
     */
    public function fieldValueDirective($construction)
    {
        if (!$this->formRecord) {
            return '';
        }

        $frontendBlocksRepository = $this->getFrontendBlockRepository();
        if (!$frontendBlocksRepository) {
            return '';
        }

        $fieldValue = '';
        $parameters = $this->getParameters($construction[2]);
        if (isset($parameters['id'])) {
            $recordAttribute = $this->getRecordAttribute($parameters['id']);

            if ($recordAttribute) {
                $block = $this->getAttributeFrontendBlock($recordAttribute);
                if (isset($parameters['admin'])) {
                    $block->setStoreId(0);
                } else {
                    $block->setStoreId($this->getStoreId());
                }

                $block->setFormRecord($this->formRecord);
                $block->setParameters($parameters);
                $fieldValue = $block->toHtml();
            } else {
                $this->_logger->warning(
                    'Missing field with ID "' . $parameters['id'] . '" in alekseon custom form with id ' .  $this->formRecord->getForm()->getId()
                );
            }
        }

        return $fieldValue;
    }

    /**
     * @param $attribute
     * @return bool|\Magento\Framework\View\Element\BlockInterface
     */
    private function getAttributeFrontendBlock($attribute)
    {
        $frontendBlock = $this->getFrontendBlockRepository()->getFrontendBlock($attribute);
        if ($frontendBlock) {
            $blockName = $attribute->getAttributeCode();
            $block = $this->_layout->getBlock($blockName);
            if (!$block) {
                $block = $this->_layout->createBlock($frontendBlock['class'], $blockName, $frontendBlock);
            }
            if (isset($frontendBlock['template'])) {
                $block->setTemplate($frontendBlock['template']);
            }
            $block->setRecordAttribute($attribute);
            return $block;
        }

        return false;
    }

    /**
     * @param $id
     */
    private function getRecordAttribute($id)
    {
        if (isset($this->formRecordsAttributes[$id])) {
            $fieldId = $id;
        } else {
            $fieldId = 'field_' . $this->formRecord->getForm()->getId() . '_' . $id;
        }

        if (isset($this->formRecordsAttributes[$fieldId])) {
            return $this->formRecordsAttributes[$fieldId];
        }

        return false;
    }
}