Community

const request = require('request');
const fs=require('fs');
const VURL ='https://vantage.abbyy.com';
const VLOGIN ='your-login';
const VPASSWORD ='your-password';
const VANTAGE_SKILL_ID= 'fae19ed1-f4d5-42ed-87f2-d10a3b03171d';
function Authenticate (login,password,callback){
    const options = {
        url: VURL+'/auth/connect/token',
        method: 'POST',
        form : {
            'grant_type': 'password',
            'scope': 'openid permissions',
            'username' : login,
            'password' : password,
            'client_id' : 'ABBYY.Vantage',
            'client_secret' :'f3ec6136-6ccc-75a1-3780-caeef723e998'
          }
    };
    request(options, function(err, res, body) {
        if(err) console.log(err);
        let json = JSON.parse(body);
        return callback(json.access_token);
    });
}
function LaunchTransaction (access_token, filepath, fileName, skillid,callback){
    // create file payload
    files=[];
    files.push('application/pdf');
    files.push(fileName);
    files.push (fs.createReadStream(filepath));
    var payloadform = {
        'file' : files
    }
    var contentLength = payloadform.length;
    const options = {
        url: VURL+'/api/publicapi/v1/transactions/launch?skillId='+skillid,
        method: 'POST',
        headers: {
            'Authorization' : 'Bearer '+ access_token,
            'Content-Length': contentLength,
            'Content-Type': 'multipart/form-data'
        },
        formData : payloadform
    };
    request(options, function(err, res, body) {
        if(err) console.log(err);
        let json = JSON.parse(body);
        return callback(json.transactionId);
    });
}
function GetTransactionResults(access_token,transactionID, callback){
    const options = {
        url: VURL+'/api/publicapi/v1/transactions/'+transactionID,
        method: 'GET',
        headers: {
            'Authorization' : 'Bearer '+ access_token
        }
    };
    request(options, function(err, res, body) {
        if(err) console.log(err);
        return callback (body)
    });
}
function GetProcessedFile(access_token,transactionID,fileID,filepath){
    const options = {
        url: VURL+'/api/publicapi/v1/transactions/'+transactionID+'/files/'+fileID+'/download',
        method: 'GET',
        headers: {
            'Authorization' : 'Bearer '+ access_token
        }
    };
    let file = fs.createWriteStream(filepath);
    let stream = request(options)
    .pipe(file)
    .on('finish', () => {
        console.log(`The file has been downloaded`);
        //resolve();
    })
    .on('error', (error) => {
        //reject(error);
    })
}
// main flow
Authenticate(VLOGIN,VPASSWORD,function (data){
    _access_token = data;
    console.log('Authenticated')
    LaunchTransaction(_access_token,"./invoice.PDF",'invoice.pdf',VANTAGE_SKILL_ID, function(data){
        _transactionID=data;
        console.log('Transaction ID: '+_transactionID);
        console.log('Wait for 15 seconds');
        setTimeout(
            GetTransactionResults,
            15000,
            _access_token,_transactionID,function(data){
                let json = JSON.parse(data);
                console.log('Transaction status: '+json.status);
                var files=json.documents[0].resultFiles;
                var _fileName='';
                var _fileID='';
                for (k=0;k<files.length;k++){ //looking for json file
                  if (files[k].type=="FieldsJson"){
                    _fileID=files[k].fileId;
                    _fileName=files[k].fileName;
                    break;
                  }
                }
                console.log('File Name:'+_fileName);
                console.log('File ID: '+_fileID);
                GetProcessedFile(_access_token,_transactionID,_fileID,'./'+_fileName)
            }
        )
    })
  });