/**
 * @package comments
 */
(function($) {
	$(document).ready(function () {
		
		var commentsHolder = $('.comments-holder'),
			commentsList = $('.comments-list', commentsHolder),
			noCommentsYet = $('.no-comments-yet', commentsHolder),
			form = $('#Form_CommentsForm'),
			error = $('#Form_CommentsForm_error', form).hide()

		// create the not comments message if it doesn't exist yet, but hide it (incase we need it)
		if(!noCommentsYet.length){
			noCommentsYet = $('<p class="no-comments-yet">No one has commented on this page yet.</p>').appendTo(commentsHolder).hide();
		}


		/**
		 * Validate
		 */
		form.validate({
		invalidHandler : function(form, validator){
				$('html, body').animate({
			scrollTop: $(validator.errorList[0].element).offset().top - 30
			}, 200);
			},

			errorElement: "span",
			errorClass: "error",

			rules: {
				Name : {
					required : true
				},
				Email : {
					required : true,
					email : true
				},
				Comment: {
					required : true
				},
				URL: {
					url : true
				}
			},
			messages: {
				Name : {
					required : 'Plaese enter your name'
				},
				Email : {
					required : 'Plaese enter your email address',
					email : 'Plaese enter a valid email address'
				},
				Comment: {
					required : 'Plaese enter your comment'
				},
				URL: {
					url : 'Please enter a valid URL'
				}
			}
		});


		/**
		 * Clicking one of the metalinks performs the operation via ajax
		 * this inclues the spam and approve links
		 */
		form.submit(function (e) {

			// trigger validation, if there are errors add the error classes to the elements
			if(!form.validate().valid()){
				form.find('span.error').addClass('message required');
				return false;
			}
		
			// submit the form
			$(this).ajaxSubmit(function(response) {
				noCommentsYet.hide();

				if(!commentsList.length){
					commentsHolder.append("<ul class='comments-list'></ul>");
					commentsList = $('.comments-list', commentsHolder);
				}

				var newComment = $('<li />')
					.addClass('even first')
					.html(response)
					.hide();

				if(response.match('<b>Spam detected!!</b>')) {
					newComment.addClass('spam');
				}

				commentsList.prepend(newComment.fadeIn());
				
				$(this).resetForm();
				
			});
			
			return false;
		});

		
		/**
		 * Clicking one of the metalinks performs the operation via ajax
		 * this inclues the spam and approve links
		 */
		$(".action-links a", commentsList).live('click', function(e) {
			var link = $(this);
			var comment = link.parents('.comment:first');
			var commentsList = comment.parents('ul:first');
			
			$.ajax({
				url: $(this).attr('href'),
				cache: false,
				success: function(html){
					if(link.hasClass('ham')) {
						// comment has been marked as not spam
						comment.html(html);
						comment.removeClass('spam').hide().fadeIn();
					}
					else if(link.hasClass('approve')) {
						// comment has been approved
						comment.html(html);
						comment.removeClass('unmoderated').hide().fadeIn();
					}
					else if(link.hasClass('delete')) {
						comment.fadeOut(1000, function() {
							comment.remove();
									
							if(commentsList.children().length == 0) {
								noCommentsYet.show();
							}
						});
					}
					else if(link.hasClass('spam')) {
						if(html) {
							comment.html(html).addClass('spam').hide().fadeIn();
						} else {
							comment.fadeOut(1000, function() {				// Fade out the comment
								comment.remove();							// remove the comment
							
								if(comments.children().length == 0) {
									noCommentsYet.show();
								}
							});
						}
					}
				},
				failure: function(html) {
					alert(html)
				}
			});
			
			e.preventDefault();
		})
	});
})(jQuery);