var winston = require('winston');
  var soap = require('soap');

  var crypto = require('crypto');
  var strftime = require('strftime');

  var fs = require("fs");
  var whiskers = require("whiskers");
  var http = require("http");

  var url = require("url");

  
  process.chdir(__dirname);
  var soapTemplate = fs.readFileSync("message.xml");

  
  var max_retry = 10;
  var sleep_before_retry = 5000;
  
  var config;
  var callbackReport;
  var aaa;
  var logger;
  var options;
  
  function start(_config, _callbackReport, options) {
      config = _config;
      callbackReport = _callbackReport
  
      if (options && options.aaa) {
              aaa = options.aaa;
      }
  
      if (options && options.logger) {
          logger = options.logger;
      } else {
          logger = new winston.Logger({
              transports: [
                new (winston.transports.Console)()
              ]
          });
      }
  }
  
  function topupRequest(task, retry) {
      if (retry === undefined) {
          retry = max_retry;
      }

      var remoteProduct = task.remoteProduct.split(',');

      var params = {

          userName: config.h2h_out.userid,
          productCode: remoteProduct[0] ,

          terminal: 'H2HIPN10',

          transactionType: '50',
          billNumber: createBillNumber(task.destination),
          amount: remoteProduct[1],
          bit61: createBillNumber(task.destination),
          reff: task.requestId,

          timeStamp: strftime('%Y-%m-%d %H:%M:%S', new Date())

      }

      var signature = createSignature(params, config.h2h_out.password);
      params.signature = signature;

      //topupRequestSoapDIY(task, params, retry);
      topupRequestSoap(task, params, retry);

  }

  function topupRequestSoap(task, params, retry) {

      soap.createClient(config.h2h_out.partner, function(err, soapClient) {

          var _params = {
              userName: params.userName,
              signature: params.signature,
              productCode: params.productCode,
              terminal: params.terminal,
              transactionType: params.transactionType,
              billNumber: params.billNumber,
              amount: params.amount,
              bit61: params.bit61,
              reff: params.reff,
              timeStamp: params.timeStamp
          }
  
          logger.info('Requesting to service', {url: config.h2h_out.partner, params: _params});
  
          soapClient.apih2h.apih2hPort.billpayment({ inputCheck: _params }, function(err, result) {

              logger.verbose(
                  'Got response',
                  {
                      lastEndpoint: soapClient.lastEndpoint,
                      lastRequest: soapClient.lastRequest,
                      lastMessage: soapClient.lastMessage,
                      lastResponse: soapClient.lastResponse,
                  }
              );

              if (err) {
                  logger.warn('Error requesting service', {err: err});
                  callbackReport(task.requestId, '68', 'something wrong');
                  return;
              }

              topupResponseHandler(task, result);

          });
      });
  }

  function topupResponseHandler(task, response) {
      var st24rc = '68';
      var st24message = response.outputParameter.resultDesc.$value;

      var resultCode = parseInt(response.outputParameter.resultCode.$value);
      var bit39 = parseInt(response.outputParameter.bit39.$value);
  
      if ( resultCode == 1 ) {

          // product disabled
          st24rc = '13';
      }

      else if ( resultCode == 2 ) {

          // prodcode disable
          st24rc = '13';
      }

      else if ( resultCode == 3 ) {

          // duplicate reff
          st24rc = '55';
      }

      else if ( resultCode == 4 ) {

          // not enough balance
          st24rc = '40';
      }

      else if ( resultCode == 5 ) {

          // username blocked
          st24rc = '40';
      }

      else if ( resultCode == 6 ) {

          // not exists username
          st24rc = '40';
      }

      else if ( resultCode == 11 ) {

          // invalid request
          st24rc = '40'
      }

      else if ( resultCode == 12 ) {

          // no route to host
          st24rc = '40'
      }

      else if ( resultCode == 13 ) {

          // invalid signature
          st24rc = '40'
      }

      else if ( bit39 == 6 ) {

          st24rc = '40';
          st24message = 'Error Transaksi ditolak karena terjadi error di H2H dengan response code diluar daftar ini. Silahkan hubungi H2H';
      }

      else if ( bit39 == 12 ) {

          st24rc = '40';
          st24message = 'Invalid Transaction Transaksi ditolak karena flow transaksi tidak valid';
      }

      else if ( bit39 == 13 ) {

          st24rc = '13';
          st24message = 'Invalid voucher nominal';
      }

      else if ( bit39 == 14 ) {

          st24rc = '14';
          st24message = 'MSISDN tidak ditemukan';
      }

      else if ( bit39 == 30 ) {

          st24rc = '40';
          st24message = 'Format Error';
      }

      else if ( bit39 == 31 ) {

          st24rc = '40';
          st24message = 'Kode bank tidak terdaftar';
      }

      else if ( bit39 == 63 ) {

          st24rc = '40';
          st24message = 'Reversal denied';
      }

      else if ( bit39 == 68 ) {

          st24rc = '68';
          st24message = 'Transaksi sedang dalam proses';
      }

      else if ( bit39 == 69 ) {

          st24rc = '68';
          st24message = 'Respon Ok lebih dari 24 detik';
      }

      else if ( bit39 == 70 ) {

          st24rc = '13';
          st24message = 'Voucher out of stock';
      }

      else if ( bit39 == 79 ) {

          st24rc = '14';
          st24message = 'Phone number is blocked by Telkomsel';
      }

      else if ( bit39 == 81 ) {

          st24rc = '14';
          st24message = 'Phone number is expired';
      }

      else if ( bit39 == 89 ) {

          st24rc = '40';
          st24message = 'Link to billing provider is down';
      }

      else if ( bit39 == 91 ) {

          st24rc = '40';
          st24message = 'Database problem';
      }

      else if ( bit39 == 92 ) {

          st24rc = '40';
          st24message = 'Unable to route transaction';
      }

      else if ( bit39 == 94 ) {

          st24rc = '40';
          st24message = 'Duplicate reversal request';
      }

      else if ( resultCode == 0 && bit39 == 0) {
  
          var sn = '';
  
          try {
              sn = response.outputParameter.bit61.$value.substring(43);
          }

          catch(e) {

              sn = '';
          }
  
          st24message = 'SN=' + sn + '; ' + st24message;
          st24rc = '00';
      }

      var message =
          response.outputParameter.resultCode.$value
          + " " + response.outputParameter.resultDesc.$value

          + "; BIT39: " + response.outputParameter.bit39.$value

          ;

      if (response.outputParameter.resultDesc.$value != st24message) {
          var message = message + " " + st24message;
      }

      logger.info('Got result: ' + message, {response: response});

      callbackReport(task.requestId, st24rc, st24message);

  }
  
  function topupRequestRetry(task) {
      task.retry--;
  
      if (task.retry > 0) {
          logger.info('Retrying in ' +  sleepBeforeRetry + 's');
          setTimeout(topupRequest, sleepBeforeRetry * 1000, task, task.retry);
      }
      else {
          logger.warn('Maximum retry for pending status exceeded', {task: task});
      }
  }

  function createSignature(params, password) {

      var passwordHash = crypto.createHash('sha256').update(password).digest().toString('hex');

      var plain =

          params.userName

          + passwordHash

          + params.productCode
          + params.terminal
          + params.transactionType
          + params.billNumber
          + params.amount
          + params.reff
          + params.timeStamp;

      return crypto.createHash('sha1').update(plain).digest().toString('hex');

  }
  
  function createBillNumber(destination) {
      return ("0000000000000" + destination).slice(-13);

  }
  
  exports.start = start;
  exports.topupRequest = topupRequest;

  exports.createSignature = createSignature;
  exports.createBillNumber = createBillNumber;