<?php

namespace App\SearchDisplace;

use Illuminate\Support\Facades\Storage;
use App\SearchDisplace\Output\HtmlOutput;

class SearchAndDisplaceJSON
{
    protected $file;
    protected $searchers;

    public function __construct($file, $searchers)
    {
        $this->file = $file . '/document.json';
        $this->searchers = $searchers;
        
        $this->storage = Storage::disk('local');
    }

    public function execute()
    {
        if(! $this->storage->exists("contracts/$this->file")) {
            return;
        }

        try {
            $content = $this->getContent();
        } catch (\Exception $exception) {
            \Illuminate\Support\Facades\Log::info('EXCEPTION: ' . $exception->getMessage());
            
            return;
        }

        $searchDisplace = $this->applySD($content);

        $convert = new HtmlOutput($searchDisplace);

        return $convert->getData();
    }

    protected function getContent()
    {
        return json_decode($this->storage->get("contracts/$this->file"));
    }

    protected function applySD($elements)
    {
        $indexes = [];

        foreach($elements as $element) {
            if($element->tag === 'img')
                continue;

            $search = new SearchAndDisplace(
                stripslashes($element->content),
                [
                    'searchers' => $this->searchers,
                ],
                false,
                true
            );
    
            $changed = $search->execute();

            if($changed) {
                foreach($changed['indexes'] as $key => $searcher) {
                    foreach($searcher as $change) {
                        if($change['start']) {
                            $indexes[$key][] = $change;
                            $element->paragraph = $key;
                        }
                    }
                }
                $element->content = $changed['content'];
            }
        }

        return [
            'content' => $elements,
            'indexes' => $indexes
        ];
    }
}