// JavaScript Document

(function($){  


// Comments Class
function Comments(options) {
	// init options
	this.page_id = options.page_id;// comment page "id"
	this.url = options.url;// url for getting comments
	this.$comments_container = $(options.comments_container);
	this.$nav = $(options.nav);// jquery selector for nav that controls these comments
	this.$comments_total = $(options.comments_total);// jquery selector for "total comments" counter
	this.$comments_page_count = $(options.comments_page_count);// jquery selector for page counter
	this.is_approved = options.is_approved;
	this.is_deleted = options.is_deleted;
	this.rows_per_page = options.rows_per_page;
	this.form_vars = options.form_vars;
	
	// init other vars
	this.page = 1;// current page number
	this.total_pages = 1; // will be updated by getComments later
	this.total_comments = 1;// will be updated by getComments later
	this.$blank_comment = new Object();
	
	var parentClass = this;
	
	this.init = function(comment_outer_box){

		var $comment_outer_box = $(comment_outer_box);
		
		this.$blank_comment = $(this.$comments_container.find('.comment')).clone();
		
		// set up navigation
		this.$nav.find('.FirstPage').click(function(){
			parentClass.FirstPage();
		});
		this.$nav.find('.PrevPage').click(function(){
			parentClass.PrevPage();
		});
		$(options.nav + ' .GoToPage').live("click", function(){
			var $this = $(this);
			var new_page = $this.text();
			parentClass.GoToPage({new_page: new_page});
		});
		this.$nav.find('.NextPage').click(function(){
			parentClass.NextPage();
		});
		this.$nav.find('.LastPage').click(function(){
			parentClass.LastPage();
		});
		
		// set up moderation
		$(document).find('.moderate').live("click", function(){
			var $this = $(this);
			var comment_id = $this.siblings('.comment_id').text();
			
			var do_approve = false;
			var do_delete = false;
			var post_vars = {};
			
			if($this.hasClass('approve')) {
				do_approve = true;
				post_vars = {approve_ids: comment_id};
			}
			else if($this.hasClass('delete')) {
				do_delete = true;
				post_vars = {id: comment_id};
			}
			else {
				return false;
			}
			
			if(do_approve) {
				$.post('api.php?method=ApproveComments', post_vars, function(){
					$this.parent().fadeOut();
					//$this.parent().css('backgroundColor','#88FF88');
					parentClass.total_comments--;
					parentClass.getComments();
				});
			}
			
			if(do_delete) {
				$.post('api.php?method=DeleteComment', post_vars, function(){
					$this.parent().fadeOut();
					//$this.parent().css('backgroundColor','#FFEEEE');
					parentClass.total_comments--;
					parentClass.getComments();
				});
			}
		});
		
		// set up form
		var $form = $comment_outer_box.find('.addComment_form');
		if($form.length) {
			// if form is found, create a jquery form
			$form.ajaxForm(this.form_vars);
		}
	
		// after everything is ready, get the comments
		this.getComments();
	}
	
	this.FirstPage = function() {
		if(this.page != 1) {
			this.page = 1;
			this.getComments();
		}
	}
	
	this.LastPage = function() {
		if(this.page != this.total_pages) {
			this.page = this.total_pages;
			this.getComments();
		}
	}
	
	this.NextPage = function() {
		if(this.total_pages > this.page) {
			this.page++;
			this.getComments();
		}
	}
	
	this.PrevPage = function() {
		if(this.page > 1)
		{
			this.page--;
			this.getComments();
		}
	}
	
	this.GoToPage = function(opts) {
		var new_page = opts.new_page;
		
		this.page = new_page;
		parentClass.getComments();
	}
	
	this.getComments = function() {

		var post_vars = {
			page_id:this.page_id, 
			page:this.page, 
			is_approved:this.is_approved, 
			is_deleted: this.is_deleted, 
			rows_per_page: this.rows_per_page
			};
		
		$.post(this.url, post_vars, function(data){

			var blank_comment = parentClass.$blank_comment;
			
			parentClass.$comments_container.html('');
			
			$.each(data, function(){
				var comment	= blank_comment.clone(); 
								  
				var name = comment.find('.comment_name');
				var comment_text = comment.find('.comment_text');
				var date = comment.find('.comment_date');
				var comment_id = comment.find('.comment_id');
				var email = comment.find('.comment_email');
				var page_id = comment.find('.comment_page_id');
				
				if(this.name == null) {
					this.name = 'Anonymous';
				}
				
				if(this.email == null) {
					this.email = '';	
				}
				
				comment_id.text(this.id);
				name.text(this.name);
				comment_text.text(this.comment);
				date.text(dateFormat(mysqlTimeStampToDate(this.dtstamp),"fullDate"));
				email.html('<a href="mailto:'+this.email+'">'+this.email+'</a>');
				page_id.text(this.page_id);
				
				// make the comment displayable
				comment.css('display','block');
				
				// write the comment
				parentClass.$comments_container.append(comment);
			 });
		 
		 	 
		 	 if(data.length > 0){
				 var total_pages = data[0].total_pages;
				 var total_comments = data[0].total_comments;
				 
				 // keep track of pages, comment count
				 parentClass.total_pages = total_pages;
				 parentClass.total_comments = total_comments;
			 }
			 else if(parentClass.page <= 1) {
				 parentClass.total_pages = 0;
				 parentClass.total_comments = 0;
			 }
		 
			// set html elements
			 parentClass.$comments_total.text(' ' + parentClass.total_comments);
			 parentClass.$comments_page_count.text(' ' + parentClass.total_pages);
		 
			 // add page navs
			 if(data.length > 0){
				 var $GoToPageLinks = parentClass.$nav.find('.GoToPageLinks');// find page links container
				 $GoToPageLinks.html('');// clear page links container
				 
				 // add page links
				 var startPage = parentClass.page - 2;
				 if(startPage < 1) { startPage = 1; }
				 var endPage = startPage + 4;
				 if(endPage > parentClass.total_pages) {endPage = parentClass.total_pages;}
				 if(((endPage - startPage) < 4) && endPage > 5) {startPage = endPage - 4;}
					
				 for(var i = startPage; i <= endPage; i++) {
					 var $newPageLink = $('<a href="javascript:;" class="GoToPage">'+i+'</a>');
					 
					 if(i == parentClass.page) {
						$newPageLink.addClass('selectedPage');
					 }
	
					 $GoToPageLinks.append($newPageLink);
					 $GoToPageLinks.append('&nbsp;');
				 }
			 }
			 
			 if(parentClass.page == 1 && parentClass.total_pages <= 1 && parentClass.$nav.length) {
				// remove nav if only one page exists
				parentClass.$nav.hide();
			 }
			 else
			 {
				// show the nav
				parentClass.$nav.show();
			 }
			
		}, 'json');
	}
}


// define jQuery plugin
$.fn.killerComment = function(options) { 
    var defaults = {  
     page_id: '', // required
	 url: 'about:blank', // required
	 nav: 'nothing', 
	 comments_total: 'nothing',
	 comments_page_count: 'nothing',
	 comments_container: 'nothing',
	 is_approved: 1,
	 is_deleted: 0,
	 rows_per_page: 5,
	 form_vars: {url:'about:blank'}
    };  
    var options = $.extend(defaults, options);  

	return this.each(function() {  
		var myComment = new Comments(options);
		myComment.init(this);
	});  
};  


})(jQuery);  


/* ************************** END OF KILLER COMMENTS ************************** */



/* ************************** BEGIN HELPER FUNCTIONS ************************** */

// mysqlTimeStampToDate: parses mysql datetime string and returns javascript Date object
function mysqlTimeStampToDate(timestamp) {
	//input has to be in this format: 2007-06-05 15:26:02
	var regex=/^([0-9]{2,4})-([0-1][0-9])-([0-3][0-9]) (?:([0-2][0-9]):([0-5][0-9]):([0-5][0-9]))?$/;
	var parts=timestamp.replace(regex,"$1 $2 $3 $4 $5 $6").split(' ');
	return new Date(parts[0],parts[1]-1,parts[2],parts[3],parts[4],parts[5]);
}


/*
 * Date Format 1.2.3
 * (c) 2007-2009 Steven Levithan <stevenlevithan.com>
 * MIT license
 *
 * Includes enhancements by Scott Trenda <scott.trenda.net>
 * and Kris Kowal <cixar.com/~kris.kowal/>
 *
 * Accepts a date, a mask, or a date and a mask.
 * Returns a formatted version of the given date.
 * The date defaults to the current date/time.
 * The mask defaults to dateFormat.masks.default.
 */

var dateFormat = function () {
	var	token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g,
		timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g,
		timezoneClip = /[^-+\dA-Z]/g,
		pad = function (val, len) {
			val = String(val);
			len = len || 2;
			while (val.length < len) val = "0" + val;
			return val;
		};

	// Regexes and supporting functions are cached through closure
	return function (date, mask, utc) {
		var dF = dateFormat;

		// You can't provide utc if you skip other args (use the "UTC:" mask prefix)
		if (arguments.length == 1 && Object.prototype.toString.call(date) == "[object String]" && !/\d/.test(date)) {
			mask = date;
			date = undefined;
		}

		// Passing date through Date applies Date.parse, if necessary
		date = date ? new Date(date) : new Date;
		if (isNaN(date)) throw SyntaxError("invalid date");

		mask = String(dF.masks[mask] || mask || dF.masks["default"]);

		// Allow setting the utc argument via the mask
		if (mask.slice(0, 4) == "UTC:") {
			mask = mask.slice(4);
			utc = true;
		}

		var	_ = utc ? "getUTC" : "get",
			d = date[_ + "Date"](),
			D = date[_ + "Day"](),
			m = date[_ + "Month"](),
			y = date[_ + "FullYear"](),
			H = date[_ + "Hours"](),
			M = date[_ + "Minutes"](),
			s = date[_ + "Seconds"](),
			L = date[_ + "Milliseconds"](),
			o = utc ? 0 : date.getTimezoneOffset(),
			flags = {
				d:    d,
				dd:   pad(d),
				ddd:  dF.i18n.dayNames[D],
				dddd: dF.i18n.dayNames[D + 7],
				m:    m + 1,
				mm:   pad(m + 1),
				mmm:  dF.i18n.monthNames[m],
				mmmm: dF.i18n.monthNames[m + 12],
				yy:   String(y).slice(2),
				yyyy: y,
				h:    H % 12 || 12,
				hh:   pad(H % 12 || 12),
				H:    H,
				HH:   pad(H),
				M:    M,
				MM:   pad(M),
				s:    s,
				ss:   pad(s),
				l:    pad(L, 3),
				L:    pad(L > 99 ? Math.round(L / 10) : L),
				t:    H < 12 ? "a"  : "p",
				tt:   H < 12 ? "am" : "pm",
				T:    H < 12 ? "A"  : "P",
				TT:   H < 12 ? "AM" : "PM",
				Z:    utc ? "UTC" : (String(date).match(timezone) || [""]).pop().replace(timezoneClip, ""),
				o:    (o > 0 ? "-" : "+") + pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4),
				S:    ["th", "st", "nd", "rd"][d % 10 > 3 ? 0 : (d % 100 - d % 10 != 10) * d % 10]
			};

		return mask.replace(token, function ($0) {
			return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1);
		});
	};
}();

// Some common format strings
dateFormat.masks = {
	"default":      "ddd mmm dd yyyy HH:MM:ss",
	shortDate:      "m/d/yy",
	mediumDate:     "mmm d, yyyy",
	longDate:       "mmmm d, yyyy",
	fullDate:       "dddd, mmmm d, yyyy",
	shortTime:      "h:MM TT",
	mediumTime:     "h:MM:ss TT",
	longTime:       "h:MM:ss TT Z",
	isoDate:        "yyyy-mm-dd",
	isoTime:        "HH:MM:ss",
	isoDateTime:    "yyyy-mm-dd'T'HH:MM:ss",
	isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'"
};

// Internationalization strings
dateFormat.i18n = {
	dayNames: [
		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
		"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
	],
	monthNames: [
		"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
		"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
	]
};

// For convenience...
Date.prototype.format = function (mask, utc) {
	return dateFormat(this, mask, utc);
};