Autocomplete, error pages, anchors, lots morrrr

app/controllers/artist_controller.rb

@@ -1,7 +1,22 @@
+require 'uri'
+require 'open-uri'
+
 class ArtistController < ApplicationController
   def data
     data = {}
-    artist = Artist.find_by_name(params[:name].gsub('+', ' '))
+    name = params[:name].gsub('%20', ' ').gsub('+', ' ')
+    artist = Artist.find_by_name(name)
+    unless artist
+      mb_artist = MusicBrainzArtist.getByName(name)
+      if mb_artist
+        ImportController.importArtist(name)
+        render :json => {error:'loading'}
+        return
+      else
+        render :json => {error:404}
+        return
+      end
+    end
     data['artist'] = {name: artist.name, desc: ActionController::Base.helpers.strip_tags(artist.desc), pic: artist.pic_url}
     data['albums'] = []
     albums = artist.albums
@@ -11,10 +26,14 @@ class ArtistController < ApplicationController
       bonus_tracks = []
       album.tracks.each do |track|
         tmp_track = {name: track.name, live: track.live, acoustic: track.acoustic}
+        if track.length
           time = (track.length / 1000).round
           time_m = (time / 60).floor
           time_s = time - time_m * 60
           tmp_track['duration'] = time_m.to_s + ':' + (time_s < 10 ? '0' : '') + time_s.to_s
+        else
+          tmp_track['duration'] = '0:00'
+        end
         (track.bonus == 0 ? album_tracks : bonus_tracks) << tmp_track
       end
       tmp_album['tracks'] = {album: album_tracks, bonus: bonus_tracks}
@@ -22,4 +41,26 @@ class ArtistController < ApplicationController
     end
     render :json => data
   end
+  
+  def autocomplete
+  	autocomplete = ArtistController.getLastFmAutocomplete(params[:query])
+  	return	render :nothing => true if autocomplete.nil?
+  	suggestions = []
+    autocomplete["response"]["docs"].each do |doc|
+    	suggestions << doc["artist"] unless suggestions.include?(doc["artist"])
+    end
+		render :json => {
+			:query => params[:query],
+			:suggestions => suggestions
+		}
+	end
+	
+	def self.getLastFmAutocomplete(query)
+  	return nil if query.nil? or query.strip.empty?
+		json = ActiveSupport::JSON.decode(open(
+		  'http://www.last.fm/search/autocomplete' <<
+		  '?q=' << URI.escape(query)
+    ).read)
+    return json.empty? ? nil : json
+	end
 end

config/routes.rb

@@ -56,5 +56,6 @@ Beathaven::Application.routes.draw do
   # Note: This route will make all actions in every controller accessible via GET requests.
   # match ':controller(/:action(/:id(.:format)))'
   
+  match 'artist/autocomplete' => 'artist#autocomplete'
   match 'artist(/:name)' => 'artist#data'
 end

public/demo/404.html

@@ -0,0 +1,4 @@
+<div id="error_page">
+	<h1>404</h1>
+	<span>Failed while searching?<br/>Wait for autocomplete, it might help.<br/>How about <a href="" onclick="loadSearchPage();return(false);">one more try</a>?</span>
+</div>

public/demo/index.html

@@ -9,6 +9,7 @@
 		<link rel="stylesheet" type="text/css" media="screen" href="/stylesheets/albums.css" />
 		<script type="text/javascript" charset="utf-8" src="/javascripts/jquery.min.js"></script>
 		<script type="text/javascript" charset="utf-8" src="/javascripts/jquery.scroll.js"></script>
+		<script type="text/javascript" charset="utf-8" src="/javascripts/jquery.autocomplete.js"></script>
 		<script type="text/javascript" charset="utf-8" src="/javascripts/layout.js"></script>
 		<script type="text/javascript" charset="utf-8" src="/javascripts/ajax.js"></script>
 		<script type="text/javascript" charset="utf-8" src="/javascripts/pages.js"></script>
@@ -45,18 +46,17 @@
 		<!-- START HEADER -->
 		<div id="header-container">
 			<ul id="navigation">
-				<li class="logo">BeatHaven</li>
+				<li class="logo search">BeatHaven</li>
-				<li>News</li>
+				<li class="search">Search</li>
-				<li>Settings</li>
+				<li><a href="https://twitter.com/#!/beat_haven" target="_blank">News</a></li>
-				<li>Logout</li>
+				<li id="vk_login">Login</li>
+				<li id="vk_logout">Logout</li>
 			</ul>
 		</div>
 		<!-- END HEADER -->
 		
 		<!-- START DATA -->
-		<div id="data-container" class="css-scrollbar">
+		<div id="data-container" class="css-scrollbar"></div>
-			<a class="data artist">Foo Fighters</a>			
-		</div>
 		<!-- END DATA -->
 		
 		<div id="vk_api_transport"></div>

public/demo/search.html

@@ -0,0 +1,18 @@
+<script type="text/javascript">
+$('#search_field').autocomplete({
+	serviceUrl: '/artist/autocomplete', // Страница для обработки запросов автозаполнения
+	minChars: 2, // Минимальная длина запроса для срабатывания автозаполнения
+	delimiter: /(,|;)\s*/, // Разделитель для нескольких запросов, символ или регулярное выражение
+	maxHeight: 400, // Максимальная высота списка подсказок, в пикселях
+	width: 415, // Ширина списка
+	zIndex: 9999, // z-index списка
+	deferRequestBy: 150, // Задержка запроса (мсек)
+	onSelect: loadArtistData
+});
+</script>
+<div id="search-container">
+	<form action="" method="post" id="search_form">
+		<input type="text" id="search_field"/>
+		<input type="submit" value="Search" id="search_button"/>
+	</form>
+</div>

public/demo/whee.html

@@ -0,0 +1,4 @@
+<div id="error_page">
+	<h1>WHEE!</h1>
+	<span>We never known anything about this artist<br/>but now we found something interesting.<br/>Please come back in a minute.</span>
+</div>

public/javascripts/ajax.js

@@ -1,13 +1,50 @@
 function loadArtistData(name) {
+	setArchor('/artist/'+ name +'/');
 	$.get('/artist/'+ name +'/', function(data){
+		if (typeof data.error != 'undefined') {
+			if (data.error == 'loading') {
+				loadWheePage();
+			} else if (data.error == 404) {
+				load404Page();
+			}
+			return false;
+		}
 		Pages.renderArtist(data);
 	})
 }
+function loadSearchPage() {
+	setArchor('/search/');
+	$.get('/demo/search.html', function(data){
+		$('#data-container').html(data);
+	})
+}
+function loadWheePage() {
+	$.get('/demo/whee.html', function(data){
+		$('#data-container').html(data);
+	})
+}
+function load404Page() {
+	$.get('/demo/404.html', function(data){
+		$('#data-container').html(data);
+	})
+}
 
 $(function(){
 	$('a.data.artist').live('click', function(){
 		loadArtistData($(this).html());
 		return false;
 	});
-	$('a.data').trigger('click');
+	$('.search').live('click', function(){
+		loadSearchPage();
+		return false;
+	});
+	$('#search_form').live('submit', function(){
+		$('.autocomplete-container').remove();
+		loadArtistData($('#search_field').val());
+		return false;
+	});
 })
+
+function setArchor(anchor) {
+	window.location = '#'+ anchor;
+}

public/javascripts/jquery.autocomplete.js

@@ -0,0 +1,392 @@
+/**
+*  Ajax Autocomplete for jQuery, version 1.1.3
+*  (c) 2010 Tomas Kirda
+*
+*  Ajax Autocomplete for jQuery is freely distributable under the terms of an MIT-style license.
+*  For details, see the web site: http://www.devbridge.com/projects/autocomplete/jquery/
+*
+*  Last Review: 04/19/2010
+*/
+
+/*jslint onevar: true, evil: true, nomen: true, eqeqeq: true, bitwise: true, regexp: true, newcap: true, immed: true */
+/*global window: true, document: true, clearInterval: true, setInterval: true, jQuery: true */
+
+(function($) {
+
+  var reEscape = new RegExp('(\\' + ['/', '.', '*', '+', '?', '|', '(', ')', '[', ']', '{', '}', '\\'].join('|\\') + ')', 'g');
+
+  function fnFormatResult(value, data, currentValue) {
+	var pattern = '(' + currentValue.replace(reEscape, '\\$1') + ')';
+    return value.replace(new RegExp(pattern, 'gi'), '<strong>$1<\/strong>');
+  }
+
+  function Autocomplete(el, options) {
+    this.el = $(el);
+    this.el.attr('autocomplete', 'off');
+    this.suggestions = [];
+    this.data = [];
+    this.badQueries = [];
+    this.selectedIndex = -1;
+    this.currentValue = this.el.val();
+    this.intervalId = 0;
+    this.cachedResponse = [];
+    this.onChangeInterval = null;
+    this.ignoreValueChange = false;
+    this.serviceUrl = options.serviceUrl;
+    this.isLocal = false;
+    this.options = {
+      autoSubmit: false,
+      minChars: 1,
+      maxHeight: 300,
+      deferRequestBy: 0,
+      width: 0,
+      highlight: true,
+      params: {},
+      fnFormatResult: fnFormatResult,
+      delimiter: null,
+      zIndex: 9999
+    };
+    this.initialize();
+    this.setOptions(options);
+  }
+  
+  $.fn.autocomplete = function(options) {
+    return new Autocomplete(this.get(0)||$('<input />'), options);
+  };
+
+
+  Autocomplete.prototype = {
+
+    killerFn: null,
+
+    initialize: function() {
+
+      var me, uid, autocompleteElId;
+      me = this;
+      uid = Math.floor(Math.random()*0x100000).toString(16);
+      autocompleteElId = 'Autocomplete_' + uid;
+
+      this.killerFn = function(e) {
+        if ($(e.target).parents('.autocomplete').size() === 0) {
+          me.killSuggestions();
+          me.disableKillerFn();
+        }
+      };
+
+      if (!this.options.width) { this.options.width = this.el.width(); }
+      this.mainContainerId = 'AutocompleteContainter_' + uid;
+
+      $('<div class="autocomplete-container" id="' + this.mainContainerId + '" style="position:absolute;z-index:9999;"><div class="autocomplete-w1"><div class="autocomplete" id="' + autocompleteElId + '" style="display:none; width:300px;"></div></div></div>').appendTo('body');
+
+      this.container = $('#' + autocompleteElId);
+      this.fixPosition();
+      if (window.opera) {
+        this.el.keypress(function(e) { me.onKeyPress(e); });
+      } else {
+        this.el.keydown(function(e) { me.onKeyPress(e); });
+      }
+      this.el.keyup(function(e) { me.onKeyUp(e); });
+      this.el.blur(function() { me.enableKillerFn(); });
+      this.el.focus(function() { me.fixPosition(); });
+    },
+    
+    setOptions: function(options){
+      var o = this.options;
+      $.extend(o, options);
+      if(o.lookup){
+        this.isLocal = true;
+        if($.isArray(o.lookup)){ o.lookup = { suggestions:o.lookup, data:[] }; }
+      }
+      $('#'+this.mainContainerId).css({ zIndex:o.zIndex });
+      this.container.css({ maxHeight: o.maxHeight + 'px', width:o.width });
+    },
+    
+    clearCache: function(){
+      this.cachedResponse = [];
+      this.badQueries = [];
+    },
+    
+    disable: function(){
+      this.disabled = true;
+    },
+    
+    enable: function(){
+      this.disabled = false;
+    },
+
+    fixPosition: function() {
+      var offset = this.el.offset();
+      $('#' + this.mainContainerId).css({ top: (offset.top + this.el.innerHeight()) + 'px', left: offset.left + 'px' });
+    },
+
+    enableKillerFn: function() {
+      var me = this;
+      $(document).bind('click', me.killerFn);
+    },
+
+    disableKillerFn: function() {
+      var me = this;
+      $(document).unbind('click', me.killerFn);
+    },
+
+    killSuggestions: function() {
+      var me = this;
+      this.stopKillSuggestions();
+      this.intervalId = window.setInterval(function() { me.hide(); me.stopKillSuggestions(); }, 300);
+    },
+
+    stopKillSuggestions: function() {
+      window.clearInterval(this.intervalId);
+    },
+
+    onKeyPress: function(e) {
+      if (this.disabled || !this.enabled) { return; }
+      // return will exit the function
+      // and event will not be prevented
+      switch (e.keyCode) {
+        case 27: //KEY_ESC:
+          this.el.val(this.currentValue);
+          this.hide();
+          break;
+        case 9: //KEY_TAB:
+        case 13: //KEY_RETURN:
+          if (this.selectedIndex === -1) {
+            this.hide();
+            return;
+          }
+          this.select(this.selectedIndex);
+          if(e.keyCode === 9){ return; }
+          break;
+        case 38: //KEY_UP:
+          this.moveUp();
+          break;
+        case 40: //KEY_DOWN:
+          this.moveDown();
+          break;
+        default:
+          return;
+      }
+      e.stopImmediatePropagation();
+      e.preventDefault();
+    },
+
+    onKeyUp: function(e) {
+      if(this.disabled){ return; }
+      switch (e.keyCode) {
+        case 38: //KEY_UP:
+        case 40: //KEY_DOWN:
+          return;
+      }
+      clearInterval(this.onChangeInterval);
+      if (this.currentValue !== this.el.val()) {
+        if (this.options.deferRequestBy > 0) {
+          // Defer lookup in case when value changes very quickly:
+          var me = this;
+          this.onChangeInterval = setInterval(function() { me.onValueChange(); }, this.options.deferRequestBy);
+        } else {
+          this.onValueChange();
+        }
+      }
+    },
+
+    onValueChange: function() {
+      clearInterval(this.onChangeInterval);
+      this.currentValue = this.el.val();
+      var q = this.getQuery(this.currentValue);
+      this.selectedIndex = -1;
+      if (this.ignoreValueChange) {
+        this.ignoreValueChange = false;
+        return;
+      }
+      if (q === '' || q.length < this.options.minChars) {
+        this.hide();
+      } else {
+        this.getSuggestions(q);
+      }
+    },
+
+    getQuery: function(val) {
+      var d, arr;
+      d = this.options.delimiter;
+      if (!d) { return $.trim(val); }
+      arr = val.split(d);
+      return $.trim(arr[arr.length - 1]);
+    },
+
+    getSuggestionsLocal: function(q) {
+      var ret, arr, len, val, i;
+      arr = this.options.lookup;
+      len = arr.suggestions.length;
+      ret = { suggestions:[], data:[] };
+      q = q.toLowerCase();
+      for(i=0; i< len; i++){
+        val = arr.suggestions[i];
+        if(val.toLowerCase().indexOf(q) === 0){
+          ret.suggestions.push(val);
+          ret.data.push(arr.data[i]);
+        }
+      }
+      return ret;
+    },
+    
+    getSuggestions: function(q) {
+      var cr, me;
+      cr = this.isLocal ? this.getSuggestionsLocal(q) : this.cachedResponse[q];
+      if (cr && $.isArray(cr.suggestions)) {
+        this.suggestions = cr.suggestions;
+        this.data = cr.data;
+        this.suggest();
+      } else if (!this.isBadQuery(q)) {
+        me = this;
+        me.options.params.query = q;
+        $.get(this.serviceUrl, me.options.params, function(txt) { me.processResponse(txt); }, 'text');
+      }
+    },
+
+    isBadQuery: function(q) {
+      var i = this.badQueries.length;
+      while (i--) {
+        if (q.indexOf(this.badQueries[i]) === 0) { return true; }
+      }
+      return false;
+    },
+
+    hide: function() {
+      this.enabled = false;
+      this.selectedIndex = -1;
+      this.container.hide();
+    },
+
+    suggest: function() {
+      if (this.suggestions.length === 0) {
+        this.hide();
+        return;
+      }
+
+      var me, len, div, f, v, i, s, mOver, mClick;
+      me = this;
+      len = this.suggestions.length;
+      f = this.options.fnFormatResult;
+      v = this.getQuery(this.currentValue);
+      mOver = function(xi) { return function() { me.activate(xi); }; };
+      mClick = function(xi) { return function() { me.select(xi); }; };
+      this.container.hide().empty();
+      for (i = 0; i < len; i++) {
+        s = this.suggestions[i];
+		if (typeof s == 'string') {
+          div = $((me.selectedIndex === i ? '<div class="selected"' : '<div') + ' title="' + s + '">' + f(s, this.data[i], v) + '</div>');
+          div.mouseover(mOver(i));
+          div.click(mClick(i));
+          this.container.append(div);
+		}
+      }
+      this.enabled = true;
+      this.container.show();
+    },
+
+    processResponse: function(text) {
+      var response;
+      try {
+        response = eval('(' + text + ')');
+      } catch (err) { return; }
+      if (!$.isArray(response.data)) { response.data = []; }
+      if(!this.options.noCache){
+        this.cachedResponse[response.query] = response;
+        if (response.suggestions.length === 0) { this.badQueries.push(response.query); }
+      }
+      if (response.query === this.getQuery(this.currentValue)) {
+        this.suggestions = response.suggestions;
+        this.data = response.data;
+        this.suggest(); 
+      }
+    },
+
+    activate: function(index) {
+      var divs, activeItem;
+      divs = this.container.children();
+      // Clear previous selection:
+      if (this.selectedIndex !== -1 && divs.length > this.selectedIndex) {
+        $(divs.get(this.selectedIndex)).removeClass();
+      }
+      this.selectedIndex = index;
+      if (this.selectedIndex !== -1 && divs.length > this.selectedIndex) {
+        activeItem = divs.get(this.selectedIndex);
+        $(activeItem).addClass('selected');
+      }
+      return activeItem;
+    },
+
+    deactivate: function(div, index) {
+      div.className = '';
+      if (this.selectedIndex === index) { this.selectedIndex = -1; }
+    },
+
+    select: function(i) {
+      var selectedValue, f;
+      selectedValue = this.suggestions[i];
+      if (selectedValue) {
+        this.el.val(selectedValue);
+        if (this.options.autoSubmit) {
+          f = this.el.parents('form');
+          if (f.length > 0) { f.get(0).submit(); }
+        }
+        this.ignoreValueChange = true;
+        this.hide();
+        this.onSelect(i);
+      }
+    },
+
+    moveUp: function() {
+      if (this.selectedIndex === -1) { return; }
+      if (this.selectedIndex === 0) {
+        this.container.children().get(0).className = '';
+        this.selectedIndex = -1;
+        this.el.val(this.currentValue);
+        return;
+      }
+      this.adjustScroll(this.selectedIndex - 1);
+    },
+
+    moveDown: function() {
+      if (this.selectedIndex === (this.suggestions.length - 1)) { return; }
+      this.adjustScroll(this.selectedIndex + 1);
+    },
+
+    adjustScroll: function(i) {
+      var activeItem, offsetTop, upperBound, lowerBound;
+      activeItem = this.activate(i);
+      offsetTop = activeItem.offsetTop;
+      upperBound = this.container.scrollTop();
+      lowerBound = upperBound + this.options.maxHeight - 25;
+      if (offsetTop < upperBound) {
+        this.container.scrollTop(offsetTop);
+      } else if (offsetTop > lowerBound) {
+        this.container.scrollTop(offsetTop - this.options.maxHeight + 25);
+      }
+      this.el.val(this.getValue(this.suggestions[i]));
+    },
+
+    onSelect: function(i) {
+      var me, fn, s, d;
+      me = this;
+      fn = me.options.onSelect;
+      s = me.suggestions[i];
+      d = me.data[i];
+      me.el.val(me.getValue(s));
+      if ($.isFunction(fn)) { fn(s, d, me.el); }
+    },
+    
+    getValue: function(value){
+        var del, currVal, arr, me;
+        me = this;
+        del = me.options.delimiter;
+        if (!del) { return value; }
+        currVal = me.currentValue;
+        arr = currVal.split(del);
+        if (arr.length === 1) { return value; }
+        return currVal.substr(0, currVal.length - arr[arr.length - 1].length) + value;
+    }
+
+  };
+
+}(jQuery));

public/javascripts/layout.js

@@ -7,6 +7,7 @@ var beathaven = {
 	init: function () {
 		this.drawInterface();
 		this.adjustSizes();
+		load404Page();
 	},
 	drawInterface: function() {
 	},

public/javascripts/pages.js

@@ -15,11 +15,12 @@ var Pages = {
 		
 		var albums_info = $('<div class="albums"></div>');
 		$.each(data.albums, function(i, album){
+			if (album.year != null) {
 				var album_info = $('\
 				<div class="album">\
 					<h2 class="name">'+ album.name +' ('+ album.year +')</h2>\
 					<div class="pic">\
-					<img src="'+ album.pic +'" alt="'+ album.name +' by '+ data.artist.name +'" width="250" />\
+						<img src="'+ album.pic +'" alt="'+ album.name +' by '+ data.artist.name +'" width="250" height="250"/>\
 						<div class="add-album-button-container">\
 							<div class="add-album button gray">Add to Now Playing</div>\
 						</div>\
@@ -47,6 +48,7 @@ var Pages = {
 				});
 			
 				$(albums_info).append(album_info);
+			}
 		})
 		
 		$('#data-container').html('').append(artist_info).append(albums_info).scrollbar();

public/javascripts/vkontakte.js

@@ -1,8 +1,24 @@
+function authInfo(response) {
+	if (typeof response != 'undefined' && response.session) {
+		$('#vk_login').hide();
+		$('#vk_logout').show();
+	} else {
+		$('#vk_login').show();
+		$('#vk_logout').hide();
+	}
+}
 $(function(){
 	VK.init({
 		apiId: 2335068,
 		nameTransportPath: "/demo/xd_receiver.html"
 	});
+	VK.Auth.getLoginStatus(authInfo);
+	$('#vk_login').click(function(){
+		VK.Auth.login(authInfo, 8);
+	});
+	$('#vk_logout').click(function(){
+		VK.Auth.logout(authInfo);
+	});
 })
 
 function loadTracksData(query, callback) {

public/stylesheets/misc.css

@@ -28,6 +28,10 @@
 			font-weight: bold;
 			margin-right: 12px;
 		}
+		#navigation li a {
+			color: inherit;
+			text-decoration: inherit;
+		}
 .button {
 	display: inline;
 	width: auto;
@@ -42,6 +46,9 @@
 		border-color: #DDD;
 	}
 
+#vk_login, #vk_logout {
+	display: none;
+}
 
 .scrollbar-pane {
     margin-right: 8px;
@@ -65,6 +72,55 @@
     background: #AAA;
 }
 
+#search-container {
+	width: 100%;
+	text-align: center;
+	margin-top: 50px;
+}
+	#search-container #search_field {
+		width: 300px;
+		font-size: 24px;
+		padding: 4px;
+		border: #CCC 1px solid;
+		border-radius: 3px;
+	}
+	#search-container #search_button {
+		width: 100px;
+		font-size: 24px;
+		padding: 4px;
+		background-color: #DDD;
+		border: #CCC 1px solid;
+		border-radius: 3px;
+	}
+
+.autocomplete {
+	margin: 4px 0 0 -1px;
+}
+	.autocomplete div {
+		font-size: 24px;
+		padding: 6px 5px;
+		background-color: #FAFAFA;
+		margin-bottom: 1px;
+	}
+		.autocomplete div.selected {
+			background-color: #EAEAEA;
+		}
+
+#error_page {
+	position: absolute;
+	width: 600px;
+	text-align: center;
+	top: 100px;
+	left: 50%;
+	margin-left: -600px;
+}
+	#error_page h1 {
+		font-size: 150px;
+	}
+	#error_page span {
+		font-size: 24px;
+	}
+
 /* Colorizing *
 #player-container	{ background-color: #CFC; }
 #data-container		{ background-color: #CCF; }