var stateAbbreviations = ['AL', 'AK', 'AZ', 'AR', 'CA', 'CO', 'CT', 'DE', 'FL', 'GA', 'HI', 'ID', 'IL', 'IN', 'IA', 'KS', 'KY', 'LA', 'ME', 'MD', 'MA', 'MI', 'MN', 'MS', 'MO', 'MT', 'NE', 'NV', 'NH', 'NJ', 'NM', 'NY', 'NC', 'ND', 'OH', 'OK', 'OR', 'PA', 'RI', 'SC', 'SD', 'TN', 'TX', 'UT', 'VT', 'VA', 'WA', 'WV', 'WI', 'WY']

function jhopTweets(obj) {
  var twitters = obj;
  var statusHTML = "";
  var username = "";
  for (var i=0; i<twitters.length; i++)
  {
    username = twitters[i].user.screen_name
    statusHTML += ("<li class='tweet-"+ (i+1) +"'><span class='body'>"+htmlifyTweet(twitters[i].text)+"</span> <a class='tweet-link' href='http://twitter.com/"+username+"/statuses/"+twitters[i].id+"'>"+relative_time(twitters[i].created_at)+"</a></li>")
  }
  document.getElementById('jhop-twitter-list').innerHTML = statusHTML;
}

function htmlifyTweet(tweet) {
  var txt = tweet.replace(
    /(https?:\/\/[-a-z0-9._~:\/?#@!$&\'()*+,;=%]+)/ig,
    '<a href="$1">$1</a>'
  ).replace(
    /@+([_A-Za-z0-9-]+)/ig, 
    '<a href="http://twitter.com/$1" target="_blank">@$1</a>'
  ).replace(
    /#+([_A-Za-z0-9-]+)/ig,
    '<a href="http://search.twitter.com/search?q=%23$1" target="_blank">'
        +'#$1</a>'
  );
  return txt
}

function relative_time(time_value) {    
  var values = time_value.split(" ");
  time_value = values[1] + " " + values[2] + ", " + values[5] + " " + values[3];

  var parsed_date = Date.parse(time_value);
  var relative_to = (arguments.length > 1) ? arguments[1] : new Date();
  var delta = parseInt((relative_to.getTime() - parsed_date) / 1000);
  delta = delta + (relative_to.getTimezoneOffset() * 60);

  if (delta < 60) {
    return 'less than a minute ago';
  } else if(delta < 120) {
    return 'about a minute ago';
  } else if(delta < (60*60)) {
    return (parseInt(delta / 60)).toString() + ' minutes ago';
  } else if(delta < (120*60)) {
    return 'about an hour ago';
  } else if(delta < (24*60*60)) {
    return 'about ' + (parseInt(delta / 3600)).toString() + ' hours ago';
  } else if(delta < (48*60*60)) {
    return '1 day ago';
  } else {
    return (parseInt(delta / 86400)).toString() + ' days ago';
  }
}

function setStateAndDate(stateAndDate) {
  var startDate = new Date();
  var today = new Date()
  startDate.setFullYear(2009, 7, 6); // Months are based on a 0 index. Make sure to subtract 1.
  numberOfDays = daysBetween(today, startDate) % 50;
  $("#month").html(today.strftime("%m"));
  $("#day").html(today.strftime("%d"));
  $("#state").html(stateAbbreviations[numberOfDays]);
}

function daysBetween(date1, date2) {
    var DSTAdjust = 0;
    // constants used for our calculations below
    oneMinute = 1000 * 60;
    var oneDay = oneMinute * 60 * 24;
    // equalize times in case date objects have them
    date1.setHours(0);
    date1.setMinutes(0);
    date1.setSeconds(0);
    date2.setHours(0);
    date2.setMinutes(0);
    date2.setSeconds(0);
    // take care of spans across Daylight Saving Time changes
    if (date2 > date1) {
        DSTAdjust = 
            (date2.getTimezoneOffset() - date1.getTimezoneOffset()) * oneMinute;
    } else {
        DSTAdjust = 
            (date1.getTimezoneOffset() - date2.getTimezoneOffset()) * oneMinute;    
    }
    var diff = Math.abs(date2.getTime() - date1.getTime()) - DSTAdjust;
    return Math.ceil(diff/oneDay);
}