React Native AsyncStorage event logger

actionLogger.js

import moment from "moment";
import { sendSlackNotification } from "../../functions";
import AsyncStorage from "../../async-storage";
import purgeClientLogs from "./purgeClientLogs";

let currentlyWriting;

const awaitUntilDoneSubmitting = async () =>
  new Promise(resolve => {
    const timerCheckSubmitted = setInterval(() => {
      if (!currentlyWriting) {
        // console.log('All clear to write anew...');
        resolve();
        clearInterval(timerCheckSubmitted);
      } else {
        // console.log('Tried workout submit while another ongoing, polling...');
      }
    }, 100);
  });
const logApiCall = async args => {
  const { response, body, query, url, forceLog = false } = args;

  // Skip it ifs a normal API call and has no body AND no query
  if (!forceLog && response && response.ok && !body && !query) {
    return null;
  }

  // Waits until any other things are done writing
  await awaitUntilDoneSubmitting();

  currentlyWriting = true;
  try {
    const today = moment().format("YYYY-MM-DD");

    let todayClientLog = await AsyncStorage.getItem(
      `@Nerdfitness:clientLog-${today}`
    );

    if (!todayClientLog || todayClientLog.length === 0) {
      // No entries for today, go ahead and purge back
      purgeClientLogs();
      todayClientLog = "";
    }

    // If the log is over 500Kb, stop adding to it to make sure we stay under Android 6Mb AsyncStorage limit
    const logSize = todayClientLog.length;

    if (logSize.length > 500000) {
      sendSlackNotification({
        title: "Log file over 500kb",
        datetime: new Date().toDateString(),
        message: `Client logs too large for: url: ${JSON.stringify(
          url
        )}, query: ${JSON.stringify(query)}, body: ${JSON.stringify(
          body
        )}, length: ${logSize}`,
        env: "LogApiCall function",
        platformName: "CMA"
      });

      return null;
    }

    const callObject = {
      ...args,
      timestamp: new Date().toISOString()
    };

    todayClientLog =
      todayClientLog === ""
        ? JSON.stringify(callObject)
        : `${todayClientLog},${JSON.stringify(callObject)}`;

    await AsyncStorage.setItem(
      `@Nerdfitness:clientLog-${today}`,
      todayClientLog
    );
  } catch (e) {
    console.log("Error appending item to client logs: ", e);
  } finally {
    currentlyWriting = false;
  }

  return null;
};

export default logApiCall;