<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use App\RemoteContact;
use App\RemoteTransfer;
use App\Permission;
use App\Notifications\DocumentNotification;
use Notification;
use Validator;
use File;
use Hash;
use GuzzleHttp\Client;

class ApiController extends Controller
{
    static $timeout = 20;
    private function isAllowed($login, $pass, $checkIP=false)
    {
        $remote_contact = RemoteContact::where('login', $login)->where('direction', 0)->where('password', $pass)->first();
        if(!$remote_contact)
            return false;

        // if($checkIP)
        //     if(!isset(static::$ip[$login]) || !(static::$ip[$login] == request()->getClientIp()))
        //         return false;

        return $remote_contact;
    }

    private function rules()
    {
        return Validator::make(request()->all(), [                        
            'registration_number' => 'required',
            'registration_date' => 'required | date | date_format:Y-m-d',
            'file' => 'required|mimes:doc,docx,xls,xlsx,pdf,txt,jpeg,jpg,png|max:20480',
            'description' => 'nullable | max:255',
        ]);
    }

    private function checkStatusRules()
    {
        return Validator::make(request()->all(), [                        
            'receipt' => 'required',
        ]);
    }


    public function receiveDocument(Request $request)
    {
        try {
            if(!$request->hasHeader('login') || !$request->hasHeader('password'))
                return response()->json(['success' => false, 'error' => 'login and password required'], 401);

            $remote_contact = $this->isAllowed($request->header()['login'][0], $request->header()['password'][0]);
            if( $remote_contact == false)
                return response()->json(['success' => false, 'error' => 'Unauthorized'], 401);

            $validate = $this->rules();
            if($validate->fails())
                return response()->json(['success' => false, 'error'=>$validate->errors()], 400);

            $transfer = new RemoteTransfer;
            $transfer->receipt = \sha1(rand(99999, 9999999999));
            $transfer->login = $request->header()['login'][0];
            $transfer->direction = 0;
            $transfer->status = 3;
            $transfer->send_at = now();
            // $transfer->description = $request->input('description');
            $transfer->content = json_encode(['registration_number' => $request->input('registration_number') ?? '', 'registration_date'=>$request->input('registration_date') ?? '', 'topic'=>$request->input('topic') ?? '']);
            $transfer->contact_id = $remote_contact->contact_id;

            if ($request->hasFile('file'))
            {
                if(!empty($request->file()) && is_array($request->file()))
                {
                    $place_of_the_documents='documents/'.date('Y').'/'.'remote';
                    $files = $request->file();
                    foreach($files as $key=>$file)
                    {
                        if(!File::isDirectory(public_path().'/'.$place_of_the_documents))
                            File::makeDirectory(public_path().'/'.$place_of_the_documents, 0777, true, true);

                        $document_name = 'remote' . '_' . md5($file->getClientOriginalName() . microtime()) .'.'. $file->getClientOriginalExtension();;
                        $file->move(public_path($place_of_the_documents), $document_name);
            
                        $transfer->place_of_the_documents = $place_of_the_documents;
                        $transfer->document_name = $document_name;

                        if(!in_array($file->getClientOriginalExtension(), ['pdf', 'zip', 'tar', 'rar', 'exe', 'gz']))
						{
							shell_exec('export HOME=/tmp && /usr/bin/libreoffice --headless --convert-to pdf ' . public_path($place_of_the_documents) . '/' . $document_name .  ' --outdir ' . public_path($place_of_the_documents));
						}
                        break;
                    }
                    
                }
                
            }

            if($transfer->save())
            {
                $link = route('transfers.show', base64_encode($transfer->id));
                
                $permitted_users = Permission::getPermittedUsersList(13);
                foreach($permitted_users as $puser)
                {
                    Notification::send($puser, new DocumentNotification($transfer->id, "api", "received", $link));
                }
                return response()->json(['success' => true, 'data' => ['receipt' => $transfer->receipt]], 200);
            }

        } catch (\Throwable $th) {
            \Log::info(['error' => $th->getMessage()]);
            return response()->json(['success' => false, 'error' => 'unknown error'], 500);
        }
    }

    public function checkStatus(Request $request)
    {
        try {
            if(!$request->hasHeader('login') || !$request->hasHeader('password'))
                return response()->json(['success' => false, 'error' => 'login and password required'], 401);

            $remote_contact = $this->isAllowed($request->header()['login'][0], $request->header()['password'][0]);
            if( $remote_contact == false)
                return response()->json(['success' => false, 'error' => 'Unauthorized'], 401);

            $validate = $this->checkStatusRules();
            if($validate->fails())
                return response()->json(['success' => false, 'error'=>$validate->errors()], 400);

            $transfer = RemoteTransfer::where('receipt', $request->input('receipt'))->first();
            if(!$transfer)
                return response()->json(['success' => false, 'error'=>'not found'], 404);

                
            return response()->json(['success' => true, 'data' => ['status' => $transfer->status]], 200);

        } catch (\Throwable $th) {
            \Log::info(['error' => $th->getMessage()]);
            return response()->json(['success' => false, 'error' => 'unknown error'], 500);
        }
    }

    public function sendDocuments($id=null)
    {
        try {
                $remotetransfers = ($id == null) ? RemoteTransfer::where('direction', 1)->whereIn('status', [1, 4])->get() : RemoteTransfer::where('id', $id)->get();
                if($remotetransfers)
                {
                    foreach($remotetransfers as $remotetransfer)
                    {
                        $this->sendDocument($remotetransfer);
                    }   
                }
        } catch (\Throwable $th) {
            \Log::info(['error' => $th->getMessage()]);
            return response()->json(['success' => false, 'data' => 'unknown error'], 500);
        }

    }

    public function getStatus(Request $request)
    {
    }

    private function sendDocument(RemoteTransfer $remotetransfer)
    {
        try {
            $remotecontact = RemoteContact::where('archive', 0)->where('direction', 1)->where('contact_id', $remotetransfer->contact_id)->whereHas('remotecontactapis')->with('remotecontactapis')->first();
            $api = $remotecontact->remotecontactapis->first();

            $file_path = public_path().'/'.$remotetransfer->place_of_the_documents.'/'.$remotetransfer->document_name;
            $client = new Client(['base_uri' => $api->connection_string, 'verify'=>false, 'timeout'=>static::$timeout, 'headers'=>['login'=>$remotecontact->login, 'password'=>$remotecontact->password]]);

            $data[] = [
                    'name'     => 'file',
                    'contents' => fopen($file_path, 'rb'),
                    'filename' => $remotetransfer->document_name,
            ];
            
            $contents = json_decode($remotetransfer->content);
            foreach($contents as $key=>$value)
            {
                $data[] =['name' => $key, 'contents'=>$value]; 
            }

            $response = $client->request($api->connection_method, '',[
                'multipart' => $data,
            ]);

            if($response->getStatusCode() == 200)
            {
                $result = json_decode($response->getBody()->getContents());
                if($result->success == "true")
                {
                    $remotetransfer->receipt = $result->data->receipt;
                    $remotetransfer->status = 2;
                    $remotetransfer->save();
                }
            }
            
        } catch (\Exception $e) {
            \Log::info(['success'=>false, 'msg'=>'connection refused', 'info'=>$e->getMessage()]);
        }
    }
}