var rating = {
    init: function() {
        rating.ratingform = document.getElementById('rating')
        rating.ratingdiv = document.getElementById('ratingdiv')
        rating.stardiv = document.createElement('div')
        rating.notifytext = document.createElement('div')
        rating.average = rating.ratingform.title.split(/:\s*/)[1].split(".")
        rating.submitted = false
        rating.make_stardiv()
    },

    make_stardiv: function() {
        /* Replaces original form with the star images */
        
        YAHOO.util.Dom.setStyle(rating.ratingform, 'display', 'none');
        YAHOO.util.Dom.addClass(rating.stardiv, 'rating');
         
				 
				var names = Array ("x" , "Dno", "Słaby", "Szału nie ma", "Ujdzie w tłoku", "Mogło być lepiej", "Całkiem nieźle", "Daje radę", "Naprawdę dobry", "Rewelacja", "Absolutny hit");  
				 
				 
				 
        // make the stars
        for (var i=1; i<=10; i++) {
            // first, make a div and then an a-element in it
            var star = document.createElement('div');
            star.id = 'star' + i;
            var a = document.createElement('a');
            a.href = '#' + i;
            a.innerHTML = i;
						a.title = names[i];
            YAHOO.util.Dom.addClass(star, 'star');
            star.appendChild(a);
            rating.stardiv.appendChild(star);

            // add needed listeners to every star
            YAHOO.util.Event.addListener(star, 'mouseover', rating.hover_star, i);
            YAHOO.util.Event.addListener(star, 'mouseout', rating.reset_stars);
            YAHOO.util.Event.addListener(star, 'click', rating.submit_rating, i);
        }        
        rating.ratingdiv.appendChild(rating.stardiv);
        // show the average
        rating.reset_stars();
        // add the statustext div and hide it
        YAHOO.util.Dom.addClass(rating.notifytext, 'notifytext');
        YAHOO.util.Dom.setStyle(rating.notifytext, 'opacity', 0);
        rating.ratingdiv.appendChild(rating.notifytext);
    },
    
    hover_star: function(e, which_star) {
        /* hovers the selected star plus every star before it */
        for (var i=1; i<=which_star; i++) {
            var star = document.getElementById('star' + i);
            var a = star.firstChild;
            YAHOO.util.Dom.addClass(star, 'hover');
            YAHOO.util.Dom.setStyle(a, 'width', '100%');
        }
    },
    
    reset_stars: function() {
        /* Resets the status of each star */
        
        // if form is not submitted, the number of stars on depends on the 
        // given average value
        if (rating.submitted == false) {
            var stars_on = rating.average[0];
            if (rating.average[1] >= 0)
                stars_on = parseInt(rating.average[0]) + 1;
            var last_star_width = rating.average[1] + '0%';
        } else {
            // if the form is submitted, then submitted number stays on
            var stars_on = rating.submitted;
            var last_star_width = '100%';
        }

        // cycle trought 1..5 stars
        for (var i=1; i<=10; i++) {
            var star = document.getElementById('star' + i);
            var a = star.firstChild;
            
            // first, reset all stars
            YAHOO.util.Dom.removeClass(star, 'hover');
            YAHOO.util.Dom.removeClass(star, 'on');

            // for every star that should be on, turn them on
            if (i<=stars_on && !YAHOO.util.Dom.hasClass(star, 'on'))
                YAHOO.util.Dom.addClass(star, 'on');

            // and for the last one, set width if needed
            if (i == stars_on)
                YAHOO.util.Dom.setStyle(a, 'width', last_star_width);
        }
    },
    
    submit_rating: function(e, num) {
        // If the form has not been submitted yet 
        // and submission is not in progress
        if (rating.submitted == false) {
            rating.submitted = num;
            // After the form is submitted, instead of old average, show
            // submitted number of stars selected
            rating.average = [num, 0];
            
            // change the statustext div and show it
            rating.notifytext.innerHTML = 'Głos jest zapisywany';
            var notify_display = new YAHOO.util.Anim(rating.notifytext, { opacity: { to: 1 } }, 0.25, YAHOO.util.Easing.easeIn);
            notify_display.animate();       
            
            // change the rating-value for the form and submit the form
            var post_to = rating.ratingform.action;
            rating.ratingform.elements[0].value = num;
            YAHOO.util.Connect.setForm(rating.ratingform);
            var c = YAHOO.util.Connect.asyncRequest('POST', post_to + '?xhr=True', rating.ajax_callback);
        }

    },
    
    ajax_callback: {
        success: function(o) {
            // release the form to normal status and change the statustext
           //rating.submitted = false
            rating.notifytext.innerHTML = 'Głos został zapisany';  rating.submitted = num;
        },
        failure: function(o) { // we shouldn't ever go down this path.
            alert('Error: ' + o.status + " " + o.statusText );
        }
    }
}
YAHOO.util.Event.addListener(window, 'load', rating.init);