<?php

namespace Aiko;

use ErrorException;
use Exception;
use Helper;
use Symfony\Component\HttpFoundation\File\Exception\FileException;
use Symfony\Component\HttpFoundation\File\UploadedFile;

class Storage
{
    private $isProduction;
    private $registry;
    private $baseStorage;

    public function __construct($registry)
    {
        $this->registry     = $registry;
        $this->isProduction = $this->registry->config->environment === 'production';
        $this->baseStorage  = $this->isProduction ? $this->registry->config->base_storage : __SITE_PATH . '/hcportal_docs/';
    }

    public function fromException($e, $action)
    {
        return Helper::handleException($this->registry, $e, "storage", $action, false, "Storage");
    }
    
    /** @param UploadedFile $file */
    public function validateFile($file, $maxSize = 2048, $allowedMime = []) 
    {
        if ($file instanceof UploadedFile) {
            $mime = $file->getMimeType();
            if (in_array($mime, $allowedMime)) return true;
            return false;
        }
        return false;    
    }

    // 
    // 
    // @param $options = [
    //   'mime' => [],
    //   'size' => 0 
    // ]
    public function store($file, $folderName = 'temp', $prefix = '', $options = [])
    {   
        try {
            $storage  = $this->trimSlashes($this->baseStorage . '/' . $folderName . '/');
            $default  = $this->generateFilename($file);
            $filename = $default;
            if ($prefix) {
                $filename = $prefix . '_' . $default;
            }
            $file->move($storage, $filename);
            return $filename;
        } catch (FileException $e) {
            return $this->fromException($e, "store");
        } catch (ErrorException $e) {
            return $this->fromException($e, "store");
        }
    }

    public function delete($filename, $folderName = 'temp')
    {
        try {
            $link = $this->trimSlashes($this->baseStorage . '/' . $folderName . '/' . $filename);
            if (file_exists($link)) {
                if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
                    $fileTmp = $link;
                    $fileTmp = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR, $fileTmp);
                    @unlink($fileTmp);
                } else {
                    unlink($link);
                }
            }
            return true;
        } catch (Exception $e) {
            return $this->fromException($e, "delete");
        }
    }
    
    public function exists($filename, $folderName = 'temp') 
    {
        $link = $this->trimSlashes($this->baseStorage . '/' . $folderName . '/' . $filename);
        return file_exists($link);
    }

    public function url($filename, $path = 'temp', $isLocal = false)
    {
        if (!$filename) {
            return null;
        }
        $filePath = $this->trimSlashes('hcportal_docs/' . $path . '/' . $filename);
        $prefix = $this->registry->config->server_address;
        if($isLocal){
            $prefix = __SITE_PATH.'/';
        }
        return $prefix . $filePath;
    }

    public function generateFilename($file)
    {
        $time = time();
        $filename = uniqid() . '_' . $time . '.' . $file->guessExtension();
        return $filename;
    }

    public function isValidImage($mimeType)
    {
        return $this->validateMime($mimeType, [
            'image/jpeg',
            'image/png',
            'image/jpg'
        ]);
        return true;
    }

    public function isValidDocument($mimeType)
    {
        return $this->validateMime($mimeType, [
            'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
            'application/vnd.ms-excel',
            'application/pdf'
        ]);
    }

    private function validateMime($mimeType, $mimeClientAlowed)
    {
        if (!in_array($mimeType, $mimeClientAlowed)) {
            return false;
        }
        return true;
    }

    private function trimSlashes($str)
    {
        return preg_replace('/(\/+)/', '/', $str);
    }
}