<?php

namespace App\Console\Commands;

use App\SearchDisplace\Ingest\SendDocument;
use App\SearchDisplace\SearchAndDisplaceOriginalDocument;
use Illuminate\Console\Command;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Redis;
use Illuminate\Support\Facades\Storage;

class RunSearchDisplace extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'sd:run
                            {path : The document path}
                            {filters* : The filters which will be applied to the search}
                            {--original : Whether the operation will recreate the original document format}';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Run search and displace on document with filters.';

    /**
     * Create a new command instance.
     *
     * @return void
     */
    public function __construct()
    {
        parent::__construct();

        // @TODO Add way to handle 'displace'.. Right now we are doing the 'replace' with ':'.
    }

    /**
     * Execute the console command.
     *
     */
    public function handle()
    {
        $documentPath = $this->argument('path');
        $searchers = $this->argument('filters');
        $original = $this->option('original');

        try {
            $this->bootAnalyzer($documentPath);

            if ( ! $original) {
                $this->runMarkdownOperation($documentPath, $searchers);
            } else {
                $this->runOriginalDocumentOperation($documentPath, $searchers);
            }

            $this->info('Processing document..');
            $this->info('After the processing will be done the result will show up at the same path as the input.');
        } catch (\Exception $exception) {
            $this->error('Something went wrong. (' . $exception->getMessage() . ')');
        }
    }

    /**
     * @param $documentPath
     * @param $searchers
     * @throws \Exception
     */
    protected function runMarkdownOperation($documentPath, $searchers)
    {
        $id = md5(uniqid(rand(), true));
        $pathDetails = pathinfo($documentPath);

        $resultedDocumentPath = $pathDetails['dirname'] . '/' . $pathDetails['filename'] . '-displaced.md';

        $this->storeSearchers($id, $searchers, $resultedDocumentPath);

        $sendToIngest = new SendDocument();

        $sendToIngest->execute($id, [
            'path' => $documentPath,
            'name' => $pathDetails['basename'],
            'type' => $this->getFileMimeType($documentPath),
        ]);
    }

    /**
     * @param $documentPath
     * @param $searchers
     * @throws \Exception
     */
    protected function runOriginalDocumentOperation($documentPath, $searchers)
    {
        $handler = new SearchAndDisplaceOriginalDocument();

        $handler->start($documentPath, $this->getListOfSearchersAndActions($searchers));
    }

    protected function storeSearchers($id, $searchers, $storeResultPath)
    {
        $data = [
            'searchers' => $this->getSearchers($searchers),

            'document_path' => $storeResultPath,
        ];

        $storage = Storage::disk('local');
        $storage->put("searchers/$id.json", json_encode($data));
    }

    protected function bootAnalyzer($filePath)
    {
        $redis = Redis::connection();

        $redis->set('analyze_performance_time', Carbon::now()->format('U'));
        $redis->set('analyze_performance_path', pathinfo($filePath,PATHINFO_DIRNAME));
    }

    protected function getSearchers($searchers)
    {
        if (count($searchers) === 1 && str_contains($searchers[0], '.json')) {
            return $this->getSearchersFromFile($searchers[0]);
        }

        return $this->getSearchersFromList($searchers);
    }

    protected function getSearchersFromList($searchers)
    {
        $storage = Storage::disk('local');

        $list = [];

        foreach ($this->getListOfSearchersAndActions($searchers) as $searcherInfo) {
            $searcherPath = 'searchers/' . $searcherInfo['key'] . '.json';

            if ( ! $storage->exists($searcherPath)) {
                throw new \Exception('Searcher "' . $searcherInfo['key'] . '" does not exist');
            }

            $list[] = [
                'content' => json_decode($storage->get($searcherPath), true),
                'type' => $searcherInfo['type'],
                'value' => $searcherInfo['value'],
            ];
        }

        return $list;
    }

    protected function getSearchersFromFile($argument)
    {
        $searchersList = $this->getListOfSearchersAndActions([$argument]);
        $searcherInfo = $searchersList[0];

        $contents = file_get_contents($searcherInfo['key']);

        if ( ! $contents) {
            throw new \Exception('There is no data in the searcher JSON file.');
        }

        return [
            [
                'content' => json_decode($contents),
                'type' => $searcherInfo['type'],
                'value' => $searcherInfo['value'],
            ],
        ];
    }

    protected function getListOfSearchersAndActions($searchers)
    {
        $searchersList = [];

        foreach ($searchers as $searcher) {
            $replaceActionResult = explode(':', $searcher);

            $searcherKey = $replaceActionResult[0];
            $type = 'replace';
            $value = '';

            if (count($replaceActionResult) === 1) {
                $displaceActionResult = explode('+', $searcher);

                if (count($displaceActionResult) > 1) {
                    $searcherKey = $displaceActionResult[0];
                    $type = 'displace';
                    $value = $displaceActionResult[1];
                }
            } else {
                $value = $replaceActionResult[1];
            }

            $searchersList[] = [
                'key' => $searcherKey,
                'type' => $type,
                'value' => $value,
            ];
        }

        return $searchersList;
    }

    protected function getFileMimeType($file) {
        if (function_exists('finfo_file')) {
            $finfo = finfo_open(FILEINFO_MIME_TYPE);
            $type = finfo_file($finfo, $file);
            finfo_close($finfo);
        } else {
            require_once 'upgradephp/ext/mime.php';
            $type = mime_content_type($file);
        }

        if (!$type || in_array($type, array('application/octet-stream', 'text/plain'))) {
            $secondOpinion = exec('file -b --mime-type ' . escapeshellarg($file), $foo, $returnCode);
            if ($returnCode === 0 && $secondOpinion) {
                $type = $secondOpinion;
            }
        }

        if (!$type || in_array($type, array('application/octet-stream', 'text/plain'))) {
            require_once 'upgradephp/ext/mime.php';
            $exifImageType = exif_imagetype($file);
            if ($exifImageType !== false) {
                $type = image_type_to_mime_type($exifImageType);
            }
        }

        return $type;
    }
}