const MODULE_NAME = 'CORE-CALLBACK.SENDER';

  const axios = require('axios');

  const config = require('komodo-sdk/config');

  const logger = require('tektrans-logger');

  const dumper = require('./dumper/sender');

  const matrix = require('../matrix');

  const HTTP_TIMEOUT = Number(
      config.callback_sender && config.callback_sender.http_timeout_ms,
  ) || 30 * 1000;
  
  const SLEEP_BEFORE_RETRY_MS = Number(
      config.callback_sender && config.callback_sender.sleep_before_retry_ms,
  ) || 10 * 1000;
  
  const MAX_RETRY = Number(
      config.callback_sender && config.callback_sender.max_retry,
  ) || 10;
  
  logger.verbose(`${MODULE_NAME} 848B9104: Initialized`, {
      HTTP_TIMEOUT,
      SLEEP_BEFORE_RETRY_MS,
      MAX_RETRY,
  });

  const axiosHeaders = {
      'Content-Type': 'application/json',
      'User-Agent': 'KOMODO-HTTPGETX callback sender',
  };

  const sleep = require('../sleep');
  const urlConcatQs = require('../url-concat-qs');
  
  const sender = async (data, xid, retry) => {

      if (!data.reverse_url) {
          logger.verbose(`${MODULE_NAME} C4FF18FB: Ignoring missing reverse url`, {
              xid,
              dataFromCore: data,
          });
  
          return;
      }

  
      const params = {
          httpgetx_xid: xid,

          command: data.command,

          request_id: data.request_id && data.request_id.toString(),
          transaction_id: data.transaction_id && data.transaction_id.toString(),
          transaction_date: data.transaction_date,

          store_name: data.store_name,
          terminal_name: data.terminal_name,

          product_name: data.product_name,
          destination: data.destination,

          rc: data.rc,

          sn: data.sn || undefined,

          amount: Number(data.amount) || undefined,
          ending_balance: Number(data.ending_balance) || undefined,

          message: data.message,

  
          bill_count: Number(data.bill_count) || undefined,
          bill_amount: Number(data.bill_amount) || undefined,
          fee_per_bill: Number(data.fee) || undefined,
          fee_total: Number(data.fee_total) || undefined,
  
          bill_detail: data.bill_detail || undefined,

          struk: data.struk || undefined,

      };

      if (data.command === 'INQUIRY' && data.amount_to_charge) {
          params.amount_to_charge = data.amount_to_charge;

      }

      const isPostpaid = ['INQUIRY', 'PAY'].indexOf(data.command) >= 0;
      const isHttpPost = isPostpaid;
  
      const endpointUrl = isHttpPost ? data.reverse_url : urlConcatQs(data.reverse_url, params);

      logger.info(`${MODULE_NAME} 8B6A4CEC: Sending to PARTNER`, {
          xid,

          retry: retry || 0,

          isPostpaid,
          isHttpPost,
          endpointUrl,

      });

      let responseToDump;
      let errorResponseToDump;

      try {

          const response = isHttpPost
              ? await axios.post(data.reverse_url, params, {
                  timeout: HTTP_TIMEOUT,
                  headers: axiosHeaders,
              })
              : await axios.get(data.reverse_url, {
                  params,
                  timeout: HTTP_TIMEOUT,
                  headers: axiosHeaders,
              });

          responseToDump = response;

          matrix.callback_sender.sent += 1;

          matrix.callback_sender.active_count += 1;
          matrix.callback_sender.active_sending[xid] = {
              ts: new Date(),
              trxId: data.trx_id,
              reverseUrl: data.reverse_url,
          };

  
          if (isPostpaid) {

              matrix.callback_sender.sent_using_post += 1;

          } else {

              matrix.callback_sender.sent_using_get += 1;

          }

          logger.info(`${MODULE_NAME} 3641FBD7: Has been sent to PARTNER successfully`, {
              xid,
              retry,
              httpStatus: response.status,
              responseBody: response && response.data,

          });
      } catch (e) {

          matrix.callback_sender.sent_failed += 1;

          matrix.callback_sender.last_error = {
              xid,
              ts: new Date(),
              eCode: e.code,
              eMessage: e.message,

              trxId: data.trx_id,

              reverseUrl: data.reverse_url,
              httpStatus: e.response && e.response.status,
              responseBody: e.response && e.response.data,
          };

          responseToDump = e.response && e.response.data;
          errorResponseToDump = e;

          logger.warn(`${MODULE_NAME} A1EC9E70: Failed on sending to PARTNER`, {

              xid,
              retry,
              maxRetry: MAX_RETRY,
              errCode: e.code,
              errMessage: e.message,
              reverseUrl: data.reverse_url,

              endpointUrl,

              httpStatus: e.response && e.response.status,

              responseBody: e.response && e.response.data,

          });

          if (e.response && e.response.status) {
              logger.verbose(`${MODULE_NAME} 10AE785C: Skip retry on http status presence`, {
                  xid,
                  httpStatus: e.response && e.response.status,
              });
              return;
          }

          if ((retry || 0) < MAX_RETRY) {
              await sleep(SLEEP_BEFORE_RETRY_MS);

              logger.verbose(`${MODULE_NAME} D8958695: Going to retry sending CORE-CALLBACK TO PARTNER`, {

                  xid,
                  retried: retry,
                  sleepTime: SLEEP_BEFORE_RETRY_MS,

              });

              sender(data, xid, (retry || 0) + 1);
          }

      } finally {
          matrix.callback_sender.active_count -= 1;
          if (matrix.callback_sender.active_sending[xid]) {
              delete matrix.callback_sender.active_sending[xid];
          }

          if (config.listener.partner.webhook) {
              try {
                  axios.post(config.listener.partner.webhook, {
                      webhookType: 'KOMODO-CENTER-HTTPGETX.CORE-CALLBACK',
                      body: params,
                  });
              } catch (e) {
                  logger.warn(`${MODULE_NAME} F722520A: Exception on calling webhook`, {
                      xid,
                      eCode: e.code,
                      eMessage: e.message || e.toString(),
                  });
              }
          }

          dumper(
              xid,
              isHttpPost ? 'POST' : 'GET',
              endpointUrl,
              params,
              responseToDump,
              errorResponseToDump,
          );

      }
  };
  
  module.exports = sender;