/* utils.js - various utils that don't belong anywhere else */

/* trace function, for debugging */

IriSP.traceNum = 0;

IriSP.trace = function( msg, value ) {

/*

	if( IriSP.config.gui.debug === true ) {

		IriSP.traceNum += 1;

		IriSP.jQuery( "<div>"+IriSP.traceNum+" - "+msg+" : "+value+"</div>" ).appendTo( "#Ldt-output" );

	}

*/

};

/* used in callbacks - because in callbacks we lose "this",

   we need to have a special function which wraps "this" in 

   a closure. This way, the 

*/   

IriSP.wrap = function (obj, fn) {

  return function() {    

    var args = Array.prototype.slice.call(arguments, 0);

    return fn.apply(obj, args);

  }

}

/* convert a time to a percentage in the media */

IriSP.timeToPourcent = function(time, timetotal){

	var time = Math.abs(time);

  var timetotal = Math.abs(timetotal);

	return Math.floor((time/timetotal) * 100);

};

IriSP.padWithZeros = function(num) {

  if (Math.abs(num) < 10) {

    return "0" + num.toString();

  } else {

    return num.toString();

  }

};

/* convert a number of milliseconds to a tuple of the form 

   [hours, minutes, seconds]

*/

IriSP.msToTime = function(ms) {

  return IriSP.secondsToTime(ms / 1000);

}

/* convert a number of seconds to a tuple of the form 

   [hours, minutes, seconds]

*/

IriSP.secondsToTime = function(secs) {  

  var hours = Math.abs(parseInt( secs / 3600 ) % 24);

  var minutes = Math.abs(parseInt( secs / 60 ) % 60);

  var seconds = parseFloat(Math.abs(secs % 60).toFixed(0));

  var toString_fn = function() {

    var ret = "";

    if (hours > 0)

       ret = IriSP.padWithZeros(this.hours) + ":";

    ret += IriSP.padWithZeros(this.minutes) + ":" + IriSP.padWithZeros(this.seconds);

    return ret;

  }

  return {"hours" : hours, "minutes" : minutes, "seconds" : seconds, toString: toString_fn};

};

/* format a tweet - replaces @name by a link to the profile, #hashtag, etc. */

IriSP.formatTweet = function(tweet) {

  /*

    an array of arrays which hold a regexp and its replacement.

  */

  var regExps = [

    /* copied from http://codegolf.stackexchange.com/questions/464/shortest-url-regex-match-in-javascript/480#480 */

    [/((https?:\/\/)?[\w-]+(\.[\w-]+)+\.?(:\d+)?(\/\S*)?)/gi, "<a href='$1'>$1</a>"],

    [/@(\w+)/gi, "<a href='http://twitter.com/$1'>@$1</a>"], // matches a @handle

    [/#(\w+)/gi, "<a href='http://twitter.com/search?q=%23$1'>#$1</a>"],// matches a hashtag

    [/(\+\+)/gi, "<span class='Ldt-PolemicPlusPlus'>$1</span>"],

    [/(--)/gi, "<span class='Ldt-PolemicMinusMinus'>$1</span>"],

    [/(==)/gi, "<span class='Ldt-PolemicEqualEqual'>$1</span>"],

    [/(\?\?)/gi, "<span class='Ldt-PolemicQuestion'>$1</span>"]

  ]; 

  var i = 0;

  for(i = 0; i < regExps.length; i++) {

     tweet = tweet.replace(regExps[i][0], regExps[i][1]);

  }

  return tweet;

};

IriSP.countProperties = function(obj) {

    var count = 0;

    for(var prop in obj) {

        if(obj.hasOwnProperty(prop))

                ++count;

    }

    return count;

};

// conversion de couleur Decimal vers HexaDecimal || 000 si fff

IriSP.DEC_HEXA_COLOR = function (dec) {

  var val = +dec;

  var str = val.toString(16);

  var zeroes = "";

  if (str.length < 6) {

    for (var i = 0; i < 6 - str.length; i++)

      zeroes += "0";

  }

  return zeroes + str;

};

/* shortcut to have global variables in templates */

IriSP.templToHTML = function(template, values) {

  var params = IriSP.jQuery.extend(IriSP.default_templates_vars, values);

  return Mustache.to_html(template, params);

};

/* we need to be stricter than encodeURIComponent,

   because of twitter

*/  

IriSP.encodeURI = function(str) {

  return encodeURIComponent(str).replace(/!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').  

                                 replace(/\)/g, '%29').replace(/\*/g, '%2A');  

IriSP.__guidCounter = 0;

IriSP.guid = function(prefix) {

  IriSP.__guidCounter += 1;

  return prefix + IriSP.__guidCounter;

};

/** returns an url to share on facebook */

IriSP.mkFbUrl = function(url, text) {

  if (typeof(text) === "undefined")

    text = "I'm watching ";

  return "http://www.facebook.com/share.php?u=" + IriSP.encodeURI(text) + IriSP.shorten_url(url);

};

/** returns an url to share on twitter */

IriSP.mkTweetUrl = function(url, text) {

  if (typeof(text) === "undefined")

    text = "I'm watching ";

  return "http://twitter.com/home?status=" + IriSP.encodeURI(text) + IriSP.shorten_url(url);

};

/** returns an url to share on google + */

IriSP.mkGplusUrl = function(url, text) {

  return "https://plusone.google.com/_/+1/confirm?hl=en&url=" + IriSP.shorten_url(url);

};

/** test if a value is null or undefined */

IriSP.null_or_undefined = function(val) {

  return (typeof(val) === "undefined" || val === null);

};

/** get a property that can have multiple names **/

IriSP.get_aliased = function(_obj, _aliases) {

    for (var _i = 0; _i < _aliases.length; _i++) {

        if (typeof _obj[_aliases[_i]] !== "undefined") {

            return _obj[_aliases[_i]];

        }

    }

    return null;

}

/** issue a call to an url shortener and return the shortened url */

IriSP.shorten_url = function(url) {

  if (IriSP.config.shortener.hasOwnProperty("shortening_function"))

    return IriSP.config.shortener.shortening_function(url);

  return url;

};

/** Similar to substr but remove the last word if

    we're breaking a word in two.

 */ 

IriSP.clean_substr = function(str, start, end) {

  var s = str.substr(start, end).substr(start, end).split(" ");

  s.pop();

  return s.join(" ");

};

/* for ie compatibility

if (Object.prototype.__defineGetter__&&!Object.defineProperty) {

   Object.defineProperty=function(obj,prop,desc) {

      if ("get" in desc) obj.__defineGetter__(prop,desc.get);

      if ("set" in desc) obj.__defineSetter__(prop,desc.set);

   }

}

*/

/* Creates regexps from text */

IriSP.regexpFromText = function(_text) {

    return new RegExp('(' + _text.replace(/(\W)/gim,'\\$1') + ')','gim');

}