<?php

namespace Ajaxy\Forms\Inc\Types;

use Ajaxy\Forms\Inc\Helper;
use Ajaxy\Forms\Inc\Types\Data\Terms;
use Ajaxy\Forms\Inc\Types\Transformer\UploadedFilesTransformer;
use Ajaxy\Forms\Inc\Types\Transformer\UploadedFileTransformer;
use ArrayObject;
use Isolated\Symfony\Component\Form\AbstractType;
use Isolated\Symfony\Component\Form\CallbackTransformer;
use Isolated\Symfony\Component\Form\ChoiceList\ChoiceList;
use Isolated\Symfony\Component\Form\ChoiceList\Loader\CallbackChoiceLoader;
use Isolated\Symfony\Component\Form\Extension\Core\Type\ChoiceType;
use Isolated\Symfony\Component\Form\Extension\Core\Type\FileType;
use Isolated\Symfony\Component\Form\Extension\Core\Type\TextType;
use Isolated\Symfony\Component\Form\FormBuilderInterface;
use Isolated\Symfony\Component\Form\FormError;
use Isolated\Symfony\Component\Form\FormEvent;
use Isolated\Symfony\Component\Form\FormEvents;
use Isolated\Symfony\Component\Form\FormInterface;
use Isolated\Symfony\Component\Form\FormView;
use Isolated\Symfony\Component\OptionsResolver\Options;
use Isolated\Symfony\Component\OptionsResolver\OptionsResolver;
use Isolated\Symfony\Component\Form\FormBuilder;
use Isolated\Symfony\Component\HttpFoundation\File\UploadedFile;
use Isolated\Symfony\Component\Validator\Constraints\NotBlank;

class RepeaterEndType extends AbstractType
{
    public function configureOptions(OptionsResolver $resolver): void
    {
        $resolver->setDefaults([
            'name' => '',
            'compound' => true,
            'mapped' => false,
            'allow_extra_fields' => true,
            'fields' => [],
            'allow_add' => '0',
            'allow_delete' => '0',
            'add_label' => 'Add',
            'delete_label' => 'Delete',
            'min' => '0',
            'max' => '-1',
            'min_message' => 'You must have at least {{value}} items',
            'max_message' => 'You cannot have more than {{value}} items',
            'invalid_message' => 'Please select a valid option.',
        ]);
        $resolver->setAllowedTypes('name', 'string');
        $resolver->setAllowedTypes('allow_add', 'string');
        $resolver->setAllowedTypes('allow_delete', 'string');
        $resolver->setAllowedTypes('add_label', 'string');
        $resolver->setAllowedTypes('delete_label', 'string');
        $resolver->setAllowedTypes('min', 'string');
        $resolver->setAllowedTypes('max', 'string');
        $resolver->setAllowedTypes('min_message', 'string');
        $resolver->setAllowedTypes('max_message', 'string');
        $resolver->setAllowedTypes('invalid_message', 'string');
    }
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        foreach ($options['fields'] as $field) {
            $nOptions = $field['options'] ?? [];

            //remove the constraints on template fields
            $nOptions['constraints'] = [];
            if ($field['type'] == 'file') {
                $field['name'] = $field['name'] . '--index';
                $builder->add($field['name'], FileType::class, []);

                throw new \Exception('File fields are not supported in the repeater.');
            } else {
                $nOptions['required'] = '';
                $builder->add($field['name'] . '--index', $field['class'], $nOptions);
            }
        }


        $parsedFileFields = [];
        $builder->addEventListener(
            FormEvents::PRE_SUBMIT,
            function (FormEvent $event) use ($options, $builder, &$parsedFileFields) {
                $data = $event->getData();
                $form = $event->getForm();

                $fields = $options['fields'];

                $indexes = [];
                foreach ($data as $key => $value) {
                    $index = (int)preg_replace('/.*--(\d+)$/', '$1', $key);
                    $indexes[(string)$index] = $key;
                }

                foreach ($fields as $field) {
                    foreach ($indexes as $index => $key) {
                        $fieldName = $field['name'] . '--' . $index;
                        if ($field['type'] == 'file') {

                            $options = helper::parse_file_field_options($field['options'] ?? []);

                            $uploadTransformer = $options['multiple'] ? new UploadedFilesTransformer() : new UploadedFileTransformer();
                            $data[$fieldName] = $uploadTransformer->reverseTransform($data[$fieldName]);

                            $parsedFileFields[$fieldName] = $data[$fieldName];


                            $extensions = $field['options']['extensions'] ?? [];
                            $extensions = \array_map(function ($ext) {
                                return trim(strtolower($ext['value']));
                            }, (array)$extensions);
                            $extensions_message = $field['options']['extensions_message'] ?? null;
                            $invalid_message = $field['options']['invalid_message'] ?? __('The file is invalid.', 'ajaxy-forms');
                            $required = $field['options']['required'] ?? false;

                            $form->add($fieldName, $field['class'], $options);

                            if ($options['multiple']) {
                                foreach ($data[$fieldName] as $file) {
                                    helper::validate_upload($form, $file, $extensions, $extensions_message, $invalid_message, $required);
                                }
                            } else {
                                helper::validate_upload($form, $data[$fieldName], $extensions, $extensions_message, $invalid_message, $required);
                            }

                            continue;
                        }
                        $form->add($fieldName, $field['class'], $field['options'] ?? []);
                    }
                }

                $min = (int)$options['min'];
                $max = (int)$options['max'];
                if ($min > 0 && count($indexes) < $min) {
                    $form->addError(new FormError(\str_replace('{{value}}', $min, $options['min_message'])));
                }

                if ($max > 0 && count($indexes) > $max) {
                    $form->addError(new FormError(\str_replace('{{value}}', $max, $options['max_message'])));
                }

                $event->setData($data);
            }
        );
    }

    /**
     * @inheritDoc
     */
    public function buildView(FormView $view, FormInterface $form, array $options)
    {
        $view->vars['fields'] = $options['fields'];
        $view->vars['allow_add'] = $options['allow_add'] == '1';
        $view->vars['allow_delete'] = $options['allow_delete'] == '1';
        $view->vars['add_label'] = $options['add_label'];
        $view->vars['delete_label'] = $options['delete_label'];
        $view->vars['min'] = $options['min'];
        $view->vars['max'] = $options['max'];

        $view->vars['settings'] = [
            'allowAdd' => $options['allow_add'] == '1',
            'allowDelete' => $options['allow_delete'] == '1',
            'addLabel' => $options['add_label'],
            'deleteLabel' => $options['delete_label'],
            'min' => (int)$options['min'],
            'max' => (int)$options['max'],
        ];

        parent::buildView($view, $form, $options);
    }

    /**
     * Get the type
     *
     * @date 2022-05-21
     *
     * @return string
     */
    public function getType()
    {
        return 'repeater_end';
    }

    public function getBlockPrefix()
    {
        return 'repeater_end';
    }
}