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Filename : PhotoController.php
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<?php

namespace App\Http\Controllers;

use File;
use Auth;
use Response;
use Log;
use App\Picture;
use Intervention\Image\ImageManager;
use Illuminate\Support\Facades\Input;
use Illuminate\Support\Facades\Validator;

use App\Http\Requests;

class PhotoController extends Controller
{

    protected $upload_path;
    protected $avatar_path;

    public function __construct()
    {
        $this->site_path = '/public/uploader';
        $this->server_path = base_path() . '/public/uploader';
    }

    public function getIndex($id = null)
    {
        $pic = Picture::find($id);
        return view('picture', compact('pic'));
    }

    public function upload()
    {
        $data = Input::all();
        $validator = Validator::make($data, Pictures::$rules, Image::$messages);

        if ($validator->fails()) {

            return Response::json([
                'status' => 'error',
                'message' => $validator->messages()->first(),
            ], 200);
        }

        $photo = $data['img'];

        $original_name = $photo->getClientOriginalName();
        $original_name_without_ext = substr($original_name, 0, strlen($original_name) - 4);

        $filename = $this->sanitize($original_name_without_ext);
        $allowed_filename = $this->createUniqueFilename($filename);

        $filename_ext = $allowed_filename . '.jpg';
        $manager = new ImageManager();
        $image = $manager->make($photo)
            ->resize(300, null, function ($constraint) {
                $constraint->aspectRatio();
            })
            ->encode('jpg')
            ->save($this->upload_path . '/' . $filename_ext);

        if (!$image) {
            return Response::json([
                'status' => 'error',
                'message' => 'Server error while uploading',
            ], 200);

        }

        return Response::json([
            'status' => 'success',
            'url' => env('UPLOAD_URL') . '/' . $filename_ext,
            'width' => $image->width(),
            'height' => $image->height()
        ], 200);
    }

    public function crop()
    {
        $data = Input::all();
        $image_url = $data['imgUrl'];

        // resized sizes
        $imgW = $data['imgW'];
        $imgH = $data['imgH'];
        // offsets
        $imgY1 = $data['imgY1'];
        $imgX1 = $data['imgX1'];
        // crop box
        $cropW = $data['cropW'];
        $cropH = $data['cropH'];
        // rotation angle
        // dd($data);
        $angle = $data['rotation'];

        $filename_array = explode('/', $image_url);
        $filename = $filename_array[sizeof($filename_array) - 1];

        if (!Auth::guest()) {
            $pic_obj = Picture::where('user_id', Auth::user()->id)->where('showhide', 'show')->orderBy('id', 'DESC')->first();
            if (isset($pic_obj)) {
                $filename = $pic_obj->picture;
            }
            $filepath = $this->server_path . '/' . Auth::user()->id . '/' . $filename;
            $dir = $this->server_path . '/' . Auth::user()->id;
            $auth = Auth::user()->id;
            if (!file_exists($dir)) {
                mkdir($dir, 0777, true);
            }
            //dd($filepath);
            if (file_exists($filepath)) {
                $site_puth = $this->site_path . '/' . Auth::user()->id;
            } elseif (file_exists($this->server_path . '/' . $filename)) {
                $filepath = $this->server_path . '/' . $filename;
                $dir = $this->server_path;
                $site_puth = $this->site_path;
            }
        } else {
            $pic_obj = Picture::where('ip', $_SERVER['REMOTE_ADDR'])->where('showhide', 'show')->orderBy('id', 'DESC')->first();
            if (isset($pic_obj)) {
                $filename = $pic_obj->picture;
            } else {
                $filename = '1502341206-realism.jpg';
            }
            $filepath = $this->server_path . '/' . $filename;
            $dir = $this->server_path;
            $site_puth = $this->site_path;
            $auth = 0;
        }


        $manager = new ImageManager();
        $image = $manager->make($filepath);

        $image->resize($imgW, $imgH)
            ->rotate(-$angle)
            ->crop($cropW, $cropH, $imgX1, $imgY1)
            ->save($dir . '/' . $filename);
        if (!$image) {

            return Response::json([
                'status' => 'error',
                'message' => 'Server error while cropping',
            ], 200);

        }
        $obj = new Picture;
        $obj->picture = $filename;
        $obj->showhide = 'show';
        $obj->user_id = $auth;
        $obj->ip = $_SERVER['REMOTE_ADDR'];
        $obj->save();
        setcookie("picture", $filename, time() + 3600, '/');
        return Response::json([
            'status' => 'success',
            'url' => $site_puth . '/' . $filename
        ], 200);
    }


    private function sanitize($string, $force_lowercase = true, $anal = false)
    {
        $strip = array("~", "`", "!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "_", "=", "+", "[", "{", "]",
            "}", "\\", "|", ";", ":", "\"", "'", "&#8216;", "&#8217;", "&#8220;", "&#8221;", "&#8211;", "&#8212;",
            "â€”", "â€“", ",", "<", ".", ">", "/", "?");
        $clean = trim(str_replace($strip, "", strip_tags($string)));
        $clean = preg_replace('/\s+/', "-", $clean);
        $clean = ($anal) ? preg_replace("/[^a-zA-Z0-9]/", "", $clean) : $clean;

        return ($force_lowercase) ?
            (function_exists('mb_strtolower')) ?
                mb_strtolower($clean, 'UTF-8') :
                strtolower($clean) :
            $clean;
    }


    private function createUniqueFilename($filename)
    {
        $upload_path = env('UPLOAD_PATH');
        $full_image_path = $upload_path . '/' . $filename . '.jpg';

        if (File::exists($full_image_path)) {
            // Generate token for image
            $image_token = substr(sha1(mt_rand()), 0, 5);
            return $filename . '-' . $image_token;
        }

        return $filename;
    }
}