var BCLS = (function(window, document) {
  var baseURL = "https://players.api.brightcove.com/v2/accounts/",
    accountId = "1752604059001",
    returnedPlayers = [],
    callNumber = 0,
    callNumberPublish = 0,
    playerIDsAra = [];
  setRequestGetPlayers();

  // +++ Configure the request to get players and extract their IDs +++
  function setRequestGetPlayers() {
    var responseParsed,
      options = {},
      endPoint = accountId + "/players";
    options.proxyURL =
      "https://solutions.brightcove.com/bcls/bcls-proxy/bcls-proxy-v2.php";
    options.url = baseURL + endPoint;
    options.requestType = "GET";
    // Call function that  calls the proxy which makes the actual call to the API
    makeRequest(options, function(response) {
      responseParsed = JSON.parse(response);
      returnedPlayers = responseParsed.items;
      // Use the filter_players function in conjunction JavaScript filter function extract wanted players
      var filtered_players = returnedPlayers.filter(filter_players);
      filteredPlayersAraLength = filtered_players.length;
      //  Extract IDs into a separate array
      for (var i = 0; i < filteredPlayersAraLength; i++) {
        playerIDsAra.push(filtered_players[i].id);
      }
      // Call function to configure calls to update players
      setRequestMakeUpdate();
    });
    // Define the criteria for set of players to update
    function filter_players(event) {
      return event.description == "For patch players Player Mgmt Sample";
    }
  }

  // +++ Configure the request to update filtered players +++
  function setRequestMakeUpdate() {
    var responseParsed,
      options = {},
      // Define what updates to make on each player
      requestBody = {
        muted: true,
        autoplay: true
      },
      baseURL = "https://players.api.brightcove.com/v2/accounts/",
      endPoint = accountId + "/players/",
      playerIDsAraLength = playerIDsAra.length;
    options.proxyURL =
      "https://solutions.brightcove.com/bcls/bcls-proxy/doc-samples-proxy-v2.php";
    options.url = baseURL + endPoint;
    var currentId = playerIDsAra[callNumber];
    options.url += currentId + "/configuration";
    options.requestBody = JSON.stringify(requestBody);
    options.requestType = "PATCH";
    // Call function that calls the proxy which makes the actual call to the API
    makeRequest(options, function(response) {
      responseParsed = JSON.parse(response);
      callNumber++;
      // If call not made for all players, recursively call this function
      if (callNumber < playerIDsAraLength) {
        setRequestMakeUpdate();
      }
      // Call function to configure calls to publish players
      setRequestPublish();
    });
  }

  // +++ Configure the request to publish updated players +++
  function setRequestPublish() {
    var responseParsed,
      options = {},
      baseURL = "https://players.api.brightcove.com/v2/accounts/",
      endPoint = accountId + "/players/",
      playerIDsAraLength = playerIDsAra.length;
    options.proxyURL =
      "https://solutions.brightcove.com/bcls/bcls-proxy/doc-samples-proxy-v2.php";
    options.url = baseURL + endPoint;
    var currentId = playerIDsAra[callNumberPublish];
    options.url += currentId + "/publish";
    options.requestType = "POST";
    // Call function that calls the proxy which makes the actual call to the API
    makeRequest(options, function(response) {
      responseParsed = JSON.parse(response);
      callNumberPublish++;
      // If call not made for all players, recursively call this function
      if (callNumberPublish < playerIDsAraLength) {
        setRequestPublish();
      }
    });
  }

  // +++ Make the call to the proxy, which in turn make actual call to API +++
  // This function generally should not be changed, if passed proper options it will just work
  function makeRequest(options, callback) {
    var httpRequest = new XMLHttpRequest(),
      response,
      requestParams,
      dataString,
      proxyURL = options.proxyURL,
      // response handler
      getResponse = function() {
        try {
          if (httpRequest.readyState === 4) {
            if (httpRequest.status >= 200 && httpRequest.status < 300) {
              response = httpRequest.responseText;
              // some API requests return '{null}' for empty responses - breaks JSON.parse
              if (response === "{null}") {
                response = null;
              }
              // return the response
              callback(response);
            } else {
              alert(
                "There was a problem with the request. Request returned " +
                  httpRequest.status
              );
            }
          }
        } catch (e) {
          alert("Caught Exception: " + e);
        }
      };
    /**
     * set up request data
     * the proxy used here takes the following request body:
     * JSON.strinify(options)
     */
    // set response handler
    httpRequest.onreadystatechange = getResponse;
    // open the request
    httpRequest.open("POST", proxyURL);
    // set headers if there is a set header line, remove it
    // open and send request
    httpRequest.send(JSON.stringify(options));
  }
})(window, document);