// Place your application-specific JavaScript functions and classes here
// This file is automatically included by javascript_include_tag :defaults
// Place your application-specific JavaScript functions and classes here
// This file is automatically included by javascript_include_tag :defaults


	var UploadProgress = {
	  uploading: null,
	  monitor: function(upid) {
	    if(!this.periodicExecuter) {
	      this.periodicExecuter = new PeriodicalExecuter(function() {
	        if(!UploadProgress.uploading) return;
	        new Ajax.Request('/rsp/progress?upload_id=' + upid);
	      }, 3);
	    }

	    this.uploading = true;
	    this.StatusBar.create();
	  },

	  update: function(total, current) {
	    if(!this.uploading) return;
	    var status     = current / total;
	    var statusHTML = status.toPercentage();
	    $('results').innerHTML   = statusHTML + "<br /><small>" + current.toHumanSize() + ' of ' + total.toHumanSize() + " uploaded.</small>";
	    this.StatusBar.update(status, statusHTML);
	  },

	  reloc: function(key) {
	      this.uploading = false;
	      url='issues';
	      //alert('trying to fwd to:'+url);
	      window.parent.location.href=url;
	  },


	  finish: function() {
	    this.uploading = false;
	    this.StatusBar.finish();
	    $('results').innerHTML = 'finished!';
	  },

	  cancel: function(msg) {
	    if(!this.uploading) return;
	    this.uploading = false;
	    if(this.StatusBar.statusText) this.StatusBar.statusText.innerHTML = msg || 'canceled';
	  },

	  StatusBar: {
	    statusBar: null,
	    statusText: null,
	    statusBarWidth: 500,

	    create: function() {
	      this.statusBar  = this._createStatus('status-bar');
	      this.statusText = this._createStatus('status-text');
	      this.statusText.innerHTML  = '0%';
	      this.statusBar.style.width = '0';
	    },

	    update: function(status, statusHTML) {
	      this.statusText.innerHTML = statusHTML;
	      this.statusBar.style.width = Math.floor(this.statusBarWidth * status);
	    },

	    finish: function() {
	      this.statusText.innerHTML  = '100%';
	      this.statusBar.style.width = '100%';
	    },


	    _createStatus: function(id) {
	      el = $(id);
	      if(!el) {
	        el = document.createElement('span');
	        el.setAttribute('id', id);
	        $('progress-bar').appendChild(el);
	      }
	      return el;
	    }
	  },

	  FileField: {
	    add: function() {
	      new Insertion.Bottom('file-fields', '<p style="display:none"><input id="data" name="data" type="file" /> <a href="#" onclick="UploadProgress.FileField.remove(this);return false;">x</a></p>')
	      $$('#file-fields p').last().visualEffect('blind_down', {duration:0.3});
	    },

	    remove: function(anchor) {
	      anchor.parentNode.visualEffect('drop_out', {duration:0.25});
	    }
	  }
	}

	Number.prototype.bytes     = function() { return this; };
	Number.prototype.kilobytes = function() { return this *  1024; };
	Number.prototype.megabytes = function() { return this * (1024).kilobytes(); };
	Number.prototype.gigabytes = function() { return this * (1024).megabytes(); };
	Number.prototype.terabytes = function() { return this * (1024).gigabytes(); };
	Number.prototype.petabytes = function() { return this * (1024).terabytes(); };
	Number.prototype.exabytes =  function() { return this * (1024).petabytes(); };
	['byte', 'kilobyte', 'megabyte', 'gigabyte', 'terabyte', 'petabyte', 'exabyte'].each(function(meth) {
	  Number.prototype[meth] = Number.prototype[meth+'s'];
	});

	Number.prototype.toPrecision = function() {
	  var precision = arguments[0] || 2;
	  var s         = Math.round(this * Math.pow(10, precision)).toString();
	  var pos       = s.length - precision;
	  var last      = s.substr(pos, precision);
	  return s.substr(0, pos) + (last.match("^0{" + precision + "}$") ? '' : '.' + last);
	}

	// (1/10).toPercentage()
	// # => '10%'
	Number.prototype.toPercentage = function() {
	  return (this * 100).toPrecision() + '%';
	}

	Number.prototype.toHumanSize = function() {
	  if(this < (1).kilobyte())  return this + " Bytes";
	  if(this < (1).megabyte())  return (this / (1).kilobyte()).toPrecision()  + ' KB';
	  if(this < (1).gigabytes()) return (this / (1).megabyte()).toPrecision()  + ' MB';
	  if(this < (1).terabytes()) return (this / (1).gigabytes()).toPrecision() + ' GB';
	  if(this < (1).petabytes()) return (this / (1).terabytes()).toPrecision() + ' TB';
	  if(this < (1).exabytes())  return (this / (1).petabytes()).toPrecision() + ' PB';
	                             return (this / (1).exabytes()).toPrecision()  + ' EB';
	}