Vn.Home = new Class
({
	Extends: Vn.Module
	
	,dateFormat: _('%a, %e %b %Y')

	,activate: function ()
	{
		this.answer = new Htk.RadioGroup ();
	
		var query = 'SELECT title, date_time, text, id  FROM news '
				+'ORDER BY priority, date_time DESC';
		this.conn.execQuery (query, this.newsQueryDone.bind (this));

/*		var query = 'SELECT question, @id := id FROM survey ORDER BY id DESC LIMIT 1; '
			+'SELECT id, answer, votes FROM survey_answer WHERE survey_id = @id';
		this.conn.execQuery (query, this.answersQueryDone.bind (this));
		
		var voteButton = document.getElementById ('vote-button');
		voteButton.addEventListener ('click', this.voteClicked.bind (this));
*/	}

	,newsQueryDone: function (resultSet)
	{
		var newsColumn = document.getElementById ('news-column');
		var res = resultSet.fetchResult ();

		if (res)
		while (res.next ())
		{	
			var div = document.createElement ('div');
			div.className = 'new';

			var title = document.createElement ('h2');
			title.appendChild (document.createTextNode (res.get ('title')));
			div.appendChild (title);

			var p = document.createElement ('p');
			p.className = 'new-info';
			div.appendChild (p);
			
			var date = Vn.Date.strftime (res.get ('date_time'), this.dateFormat);
			p.appendChild (document.createTextNode (date));

			var text = document.createElement ('div');
			text.className = 'new-text';
			div.appendChild (text);
			
			var html = '' + res.get ('text');
			text.innerHTML = html;

			var img = document.createElement ('img');
			img.alt = '';
			img.src = Vn.Config['image_dir'] + '/news/full/' + res.get ('id') + '.png';
			div.appendChild (img);

			newsColumn.appendChild (div);
		}
	}

	,answersQueryDone: function (resultSet)
	{
		var value = resultSet.fetchValue ();

		var question = document.getElementById ('question');
		question.appendChild (document.createTextNode (value));

		var res = resultSet.fetchResult ();

		this.totalVotes = 0;
		var answers = document.getElementById ('answers');

		if (res)
		while (res.next ())
		{
			var tr = document.createElement ('tr');
			answers.appendChild (tr);

			var td = document.createElement ('td');
			td.className = 'radio';
			tr.appendChild (td);
			
			var radio = this.answer.createButton (res.get ('id'));
			td.appendChild (radio);
			
			var td = document.createElement ('td');
			tr.appendChild (td);
		
			var label = document.createElement ('label');
			label.appendChild (document.createTextNode (res.get ('answer')));
			td.appendChild (label);

			var tr = document.createElement ('tr');
			answers.appendChild (tr);
			
			var td = document.createElement ('td');
			tr.appendChild (td);
			
			var td = document.createElement ('td');
			tr.appendChild (td);
	
			var text = document.createTextNode (res.get ('votes') + ' ' + _('votes'));
			td.appendChild (text);

			this.totalVotes += res.get ('votes');
		}
		
		this.refreshVotes ();
	}
	
	,refreshVotes: function ()
	{
		var totalNode = Vn.get ('total');
		Vn.Node.setText (totalNode, this.totalVotes);
	}

	,voteClicked: function ()
	{
		if (this.answer.value)
		{
			var query = 'CALL survey_vote (#id)';

			var batch = new Sql.Batch ();
			batch.addParam ('id', this.answer);

			this.conn.execQuery (query, this.voteDone.bind (this), batch);
		}
		else
			alert (_('NoAnswerSelected'));
	}

	,voteDone: function (resultSet)
	{
		if (resultSet.fetchResult ())
		{
			this.totalVotes++;
			this.refreshVotes ();
			alert (_('ThanksForVote'));
		}
	}
});