<?php

namespace YesWiki\Bazar\Field;

use Psr\Container\ContainerInterface;
use YesWiki\Core\Service\TripleStore;
use YesWiki\Tags\Service\TagsManager;

/**
 * @Field({"tags"})
 */
class TagsField extends EnumField
{
    public function __construct(array $values, ContainerInterface $services)
    {
        parent::__construct($values, $services);
        $this->name = $this->linkedObjectName; // hack because tags are Enums but id is not on same position than enums
        $this->maxChars = $this->maxChars ?? 255;
        $this->propertyName = $this->name;
    }

    public function getValueStructure() // See BazarField::getValueStructure
    {
        return [$this->propertyName => ['_mode_' => 'multiple', '_type_' => 'string']];
    }

    protected function renderInput($entry)
    {
        $tagsManager = $this->getService(TagsManager::class);

        $value = $this->getValue($entry);

        $allTags = $tagsManager->getAll();
        if (is_array($allTags)) {
            foreach ($allTags as $tag) {
                // TODO why ISO-8859-15 ? fix the encoding ???
                $response[] = _convert(str_replace('\'', '&#39;', $tag['value']), 'ISO-8859-15');
            }
        }
        if (isset($response)) {
            sort($response);
            $allTags = '\'' . implode('\',\'', $response) . '\'';
        } else {
            $allTags = '';
        }

        $script = '$(function(){
            var tagsexistants = [' . $allTags . '];
            var pagetag = $(\'#formulaire .yeswiki-input-pagetag[name="' . $this->getName() . '"]\');
            pagetag.tagsinput({
                typeahead: {
                    afterSelect: function(val) { pagetag.tagsinput(\'input\').val(""); },
                    source: tagsexistants,
                    autoSelect: false,
                },
                confirmKeys: [13, 186, 188]
            });
        });';

        $GLOBALS['wiki']->AddJavascript($script);

        if (!isset($value)) {
            if ($this->getRequest()->query->has($this->propertyName)) {
                $value = stripslashes($this->getRequest()->query->get($this->propertyName));
            } else {
                $value = stripslashes($this->default);
            }
        }

        $GLOBALS['wiki']->AddJavascriptFile('tools/tags/libs/vendor/bootstrap-tagsinput.min.js');

        return $this->render('@bazar/inputs/tags.twig', [
            'value' => $value,
            'allTags' => $allTags,
        ]);
    }

    public function formatValuesBeforeSave($entry)
    {
        // TODO use TagsManager instead of TripleStore
        $tripleStore = $this->getService(TripleStore::class);

        $value = $this->getValue($entry);

        // Delete existing tags linked to this entry
        if (!isset($GLOBALS['delete_tags']) && !empty($entry['id_fiche'])) {
            $tripleStore->delete($entry['id_fiche'], 'http://outils-reseaux.org/_vocabulary/tag', null, '', '');
            $GLOBALS['delete_tags'] = true;
        }

        // Add back all specified tags
        $tags = explode(',', $value);
        foreach ($tags as $tag) {
            trim($tag);
            if ($tag != '') {
                $tripleStore->create($entry['id_fiche'], 'http://outils-reseaux.org/_vocabulary/tag', _convert($tag, YW_CHARSET, true), '', '');
            }
        }

        return [$this->propertyName => $value];
    }

    protected function renderStatic($entry)
    {
        $value = $this->getValue($entry);

        $tags = explode(',', $value);

        if (count($tags) > 0 && !empty($tags[0])) {
            sort($tags);
            $tags = array_map(function ($tag) {
                return '<a class="tag-label label label-info" href="' . $GLOBALS['wiki']->href('listpages', $GLOBALS['wiki']->GetPageTag(), 'tags=' . urlencode(trim($tag))) . '" title="' . _t('TAGS_SEE_ALL_PAGES_WITH_THIS_TAGS') . '">' . $tag . '</a>';
            }, $tags);

            return $this->render('@bazar/fields/tags.twig', [
                'value' => join(' ', $tags) ?? '',
            ]);
        } else {
            return '';
        }
    }

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

    public function getOptions()
    {
        if (empty($this->options)) {
            $this->loadOptionsFromTags();
        }

        return parent::getOptions();
    }

    private function loadOptionsFromTags()
    {
        // TODO use TagsManager instead of TripleStore
        $tripleStore = $this->getService(TripleStore::class);

        $rawOptions = $tripleStore->getMatching(null, 'http://outils-reseaux.org/_vocabulary/tag');
        $this->options = array_map(function ($rawOption) {
            return $rawOption['value'];
        }, $rawOptions);
        $this->options = array_combine($this->options, $this->options);
    }
}
