Topic: GBLSE assets data spreadsheet (Read 4758 times)

//Shrink an array down to at most 3 elements
//Helper function
function get3(info) {
//If you want more or less payouts, change this 3
  while(info.length > 3)
    info.shift();
  return info;
}

//Fetches asset info based on ticker
function getInfo(ticker) {
  return glbseCachedFetch("/api/asset/" + ticker);
}

//Fetches dividend info based on ticker
function getDiv(ticker) {
  return glbseCachedFetch("/api/dividends/asset/" + ticker);
}

//Fetches the price of an asset
//Returns first non-zero price from the list of 24h average, 5 day average, 7 day average, or last trade
function getPrice(ticker) {
  var info = getInfo(ticker);
  return (info.t24havg/100000000) || (info.t5davg/100000000) || (info.t7davg/100000000) || (info.latest_trade/100000000);
}

//Gets the average dividend from passed in array
function getDivArray(info) {
  Logger.log("Into getDivArray");
  if(info === null) return null;
  if(info.length == 0) return 0;
  Logger.log("Not null or zero length");
  var divTotal = 0;
  for(var i = 0; i < info.length; i++) {
    divTotal += info[i].pps;
    Logger.log("Step " + i + "/" + info.length + " " + String(divTotal));
  }
  Logger.log(String(divTotal));
  return divTotal / info.length / 100000000;
}
//Gets average dividend of all payouts
function getAvgDividend(ticker) {
  Logger.log("Into getAvgDividend " + ticker);
  var info = getDiv(ticker);
  Logger.log(info);
  Logger.log("Got Info");
  return getDivArray(info);
}
//Gets Average dividend of last 3 payouts
function get3AvgDividend(ticker) {
  var info = get3(getDiv(ticker));
  return getDivArray(info);
}

//Fetches info from GLBSE, caches when fetched and attempts to use the cache
//Caches info for 30 minutes
function glbseCachedFetch(apiUrl) {
  var publicCache = CacheService.getPublicCache();
  var cached = publicCache.get("http://glbse.com" + apiUrl);
  if(cached !== null && JSON.parse(cached).length > 1 ){
    return JSON.parse(cached);
  } else {
    getSleep();
    //Browser.msgBox("Fetching");
    Logger.log("Fetching");
    var response = UrlFetchApp.fetch("http://glbse.com"+apiUrl);
    //check for status code
    var result = response.getContentText();
    if(response.getResponseCode() < 300)//Only save if good fetch
      publicCache.put("http://glbse.com"+apiUrl, result, 60 * 30);//30 * 60 seconds - 30 minutes
    return JSON.parse(result);
  }
}

//Allows small delay between multiple fetches to lighten the load on GLBSE site
function getSleep() {
  var delay = 50;
  var date = new Date();
  var now = date.getTime();
  var cache = CacheService.getPublicCache();
  var cacheKey = "sleepUntil";
  var timeString = cache.get(cacheKey);
  var time = parseInt(timeString);
  var sleep = time - now;
 
  Logger.log(cacheKey + " " + timeString);
  Logger.log("parseInt " + time);
  Logger.log("sleeping " + sleep);
 
  if((timeString === null) || (timeString == "NaN") || (time === null) || (time == NaN) || (sleep < 0)) {
    cache.put(cacheKey, String(now + delay));
  } else {
    cache.put(cacheKey, String(time + delay));
    Utilities.sleep(sleep);
  }
}
//Days between payouts, based on all payouts
function daysBetween(ticker) {
  var info = getDiv(ticker);
  if(info === null) return null;
  if(info.length < 2) return Infinity;
  var first = info[0];
  var last = info.pop();
  return (last.timestamp - first.timestamp) / info.length / 3600 / 24;
}
//Days between payouts, based on the last 3 payouts
function daysBetween3(ticker) {
  var info = get3(getDiv(ticker));
  if(info === null) return null;
  if(info.length < 2) return Infinity;
  var first = info[0];
  var last = info.pop();
  return (last.timestamp - first.timestamp) / info.length / 3600 / 24;
}