// how_much_netflix.js
// A script that looks through your Netflix viewing activity and
// tallys up how much time you've spent watching Netflix
//
// INSTRUCTIONS TO USE:
// Open https://www.netflix.com/WiViewingActivity and the developer console
// Copy and paste this script into the developer console and press enter
//
(function() {
  var fetchAllViewedItems = function() {
    var deferred = jQuery.Deferred();
    var viewedItems = [];
    (function fetchPage(page) {
      data = netflix.reactContext.models.serverDefs.data;
      url = data.SHAKTI_API_ROOT + '/' + data.BUILD_IDENTIFIER;
      jQuery.getJSON(url + '/viewingactivity?pg=' + page).done(function(json) {
        viewedItems = viewedItems.concat(json.viewedItems);
        console.log('Fetched %s viewed items', viewedItems.length);
        if (json.viewedItems.length == json.size) {
          fetchPage(++page);
        } else {
          deferred.resolve(viewedItems);
        }
      }).fail(deferred.reject);
    })(0);
    return deferred.promise();
  };

  var getDays = function(time) {
    return Math.floor(time / 60 / 60 / 24);
  };

  var getHours = function(time) {
    return Math.floor((time / 60 / 60) % 24);
  };

  var getMinutes = function(time) {
    return Math.round((time / 60) % 60);
  };

  fetchAllViewedItems().then(function(viewedItems) {
    var days = [
      {name: 'Sunday', daysWatched: 0, totalTime: 0},
      {name: 'Monday', daysWatched: 0, totalTime: 0},
      {name: 'Tuesday', daysWatched: 0, totalTime: 0},
      {name: 'Wednesday', daysWatched: 0, totalTime: 0},
      {name: 'Thursday', daysWatched: 0, totalTime: 0},
      {name: 'Friday', daysWatched: 0, totalTime: 0},
      {name: 'Saturday', daysWatched: 0, totalTime: 0},
      {name: 'Sunday', daysWatched: 0, totalTime: 0}
    ];

    var totalMovieTime = 0;
    var totalTvTime = 0;

    var currentDay = '';
    var currentDayTime = 0;
    var longestDay = '';
    var longestDayTime = 0;

    var totalTime = viewedItems.reduce(function(runningTotal, viewedItem) {

      var itemDate = new Date(viewedItem.dateStr);
      days[itemDate.getDay()].totalTime += viewedItem.bookmark;

      if (viewedItem.dateStr == currentDay) {
        currentDayTime += viewedItem.bookmark;
      } else {
        if (currentDayTime > longestDayTime) {
          longestDay = currentDay + '';
          longestDayTime = currentDayTime + 0;
        }
        days[itemDate.getDay()].daysWatched += 1;
        currentDay = viewedItem.dateStr;
        currentDayTime = viewedItem.bookmark;
      }

      // record movie and tv times separately
      if (viewedItem.series === undefined) {
        totalMovieTime += viewedItem.bookmark;
      } else {
        totalTvTime += viewedItem.bookmark;
      }

      return runningTotal + viewedItem.bookmark;
    }, 0);

    for (var i=0; i<days.length-1; i++) {
      var time = days[i].totalTime / days[i].daysWatched;
      var percentageOfWeek = Math.round(days[i].totalTime / totalTime * 100);
      console.log('Average watched on %s: %i hours, %i minutes (%i%)', days[i].name, getHours(time), getMinutes(time), percentageOfWeek);
    }

    longestDate = new Date(longestDay);
    console.log('Longest Day Watching: %s (%i hours, %i minutes)', longestDate.toDateString(), getHours(longestDayTime), getMinutes(longestDayTime));
    
    console.log('You have cumulatively watched %i days, %i hours and %i minutes of movies', getDays(totalMovieTime), getHours(totalMovieTime), getMinutes(totalMovieTime));
    console.log('You have cumulatively watched %i days, %i hours and %i minutes of TV series', getDays(totalTvTime), getHours(totalTvTime), getMinutes(totalTvTime));
    console.log('You have cumulatively watched %i days, %i hours and %i minutes of Netflix', getDays(totalTime), getHours(totalTime), getMinutes(totalTime));
  });
})();