<?php

namespace App\Jobs;

use App\Ingest\Convertor;
use App\Ingest\MDConvertor;
use App\Parser\ParseXml;
use App\Parser\DocxParser\ParseDocx;
use App\Parser\HtmlParser\ParseHtml;
use App\Parser\ParseHtmlArray;
use App\Parser\ParseTextArray;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Storage;

class IngestDocuments implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable;

    private $path;
    protected $type;

    /**
     * @var \Illuminate\Contracts\Filesystem\Filesystem
     */
    private $storage;

    /**
     * @var \App\Parser\DocxParser\ParseDocx
     */
    private $parserDocx;

    /**
     * @var \App\Parser\ParseXml
     */
    private $parserXml;

    /**
     * @var \App\Parser\HtmlParser\ParseHtml
     */
    private $parserHtml;

    /**
     * @var \App\Parser\ParseHtmlArray
     */
    private $parseHtmlArray;

    /**
     * Create a new job instance.
     *
     * @param string $path
     * @param $type
     */
    public function __construct(string $path, $type)
    {
        $this->path = $path;
        $this->type = $type;

        $this->storage = Storage::disk('local');
        $this->parserDocx = new ParseDocx();
        $this->parserXml = new ParseXml();
        $this->parserHtml = new ParseHtml();
        $this->parseHtmlArray = new ParseHtmlArray();
    }

    /**
     * Execute the job.
     *
     * @return void
     */
    public function handle()
    {
        $convertor = new Convertor($this->path, $this->type);

        try {
            $this->path = $convertor->execute();
        } catch (\Exception $exception) {
            $this->failed();
        }

        // @TODO Replace later, the convertor will create the .md file.
        if ($this->type !== 'pdf') {
            $content = $this->getContent();

            if ( ! $content) {
                $this->failed();

                return;
            }

            $content = $this->convertToUTF8($content);

            try {
                $filePath = $this->storeContent($content);
            } catch (\Exception $e) {
                Log::error('Error writing in to the file: ' . $e->getMessage());

//            report($e);
            }
        } else {
            $filePath = $this->path;
        }

        SendToCore::dispatch($filePath);
    }

    public function failed()
    {
        if ( ! $this->storage) {
            $this->storage = Storage::disk('local');
        }

        Log::error('Ingest documents failed.');

//        // @TODO Delete docx, txt and md files.
//        if ($this->storage->exists($this->path)) {
//            $this->storage->delete($this->path);
//        }

        SendToCore::dispatch($this->path, true);
    }

    protected function getContent()
    {
        if ($this->type === 'pdf') {
            // Wait while it finishes.
            while (!$this->storage->exists($this->path)) {
                sleep(1);
            }

            $textParser = new ParseTextArray(true);

            return $textParser->fromFile($this->storage->path($this->path));
        }

        $textParser = new ParseTextArray();

        return $textParser->fromFile($this->storage->path($this->path));
    }

    protected function convertToUTF8($content)
    {
        array_walk_recursive(
            $content,
            function (&$entry) {
                $entry = mb_convert_encoding(
                    $entry,
                    'UTF-8'
                );
            }
        );

        return $content;
    }

    protected function storeContent($content)
    {
        $result = explode('.', $this->path);
        $name = $result[0];

        // Or json?
        $filePath = $this->storeMD($name, $content);

        // Delete converted file. We now have the .md file.
        $this->storage->delete($this->path);

        return $filePath;
    }

    protected function storeMD($name, $content)
    {
        $fileName = "$name.md";

        $convertor = new MDConvertor($content);

        $this->storage->put($fileName, $convertor->execute());

        return $fileName;
    }

    protected function storeJson($name, $content)
    {
        $fileName = "$name.json";

        $this->storage->put($fileName, $content);

        return $fileName;
    }
}