(function($, window, undefined){

	$.fn.center = function() {
		this.css("top", ($(window).height() - this.height()) / 2 + $(window).scrollTop() + "px");
		this.css("left", ($(window).width() - this.width()) / 2 + $(window).scrollLeft() + "px");
		return this;
	};

	$.fn.applyModelErrors = function(errorMessage, errorData) {
		var $this = this;
		
		if (errorMessage !== null) {
			$this.find(".error-summary").first().text(errorMessage).show();
		}
		
		$.each(errorData, function(inputFieldName, value) {
			var $input = $this.find("input[name='" + inputFieldName + "']");
			if ($input.length > 1) {
				$input = $("#" + inputFieldName);
			}
			
			if ($input.length === 1) {
				if ($input[0].localName === "INPUT") {
					$input.addClass("input-validation-error");
				}
				
				$("<span/>")
					.addClass("field-validation-error error-message")
					.text(value)
					.insertAfter($input);
			}
		});
		
		return this;
	};
	
	$.fn.clearModelErrors = function() {
		this
			.find(".field-validation-error")
			.remove()
			.end()
			.find(".input-validation-error")
			.removeClass("input-validation-error")
			.end()
			.find(".error-summary")
			.empty()
			.hide();
			
		return this;
	};
	
	$.vgquotes = function() {
		var ajaxCallback = function(type, callback) {
			return function(data) {
				if (typeof(data) === "undefined" || typeof(data.Error) === "undefined" || data.Error !== null) {
					callback.call(null, null);
					return;
				}
				
				callback.call(null, data.Data[type + "s"][0]);
			};
		};
		
		return {
			refresh: function() { },
			parseDate: function(jsonDate) { return new Date(parseInt(jsonDate.substr(6))); },
			formatDate: function(date) { return date.getFullYear() + "-" + (date.getMonth() + 1) + "-" + date.getDate(); },
			parseAndFormatDate: function(jsonDate) { return $.vgquotes.formatDate($.vgquotes.parseDate(jsonDate)); },
			ajaxErrorHandler: function(xhr) {
				alert("An error occurred (" + xhr.status + ")");
			},
			preload: function(images) {
				//MM_preloadImages(lulz)
				$.each(images, function() {
					$('<img/>')[0].src = this;
				});
			},
			loadingGif: "/media/images/loading.gif",
			getResourceById: function(type, id, callback) {
				id = id.toString();
				$.ajax("/api/" + type + "/" + id, {
					type: "GET",
					success: ajaxCallback(type, callback),
					error: ajaxCallback(type, callback)
				});
			}
		};
	}();

	(function(){
		var refreshCookie = "vgquotes.refreshFragment";

		var refresh = function() {
			var url = window.location.href;
			var fragmentPosition = url.lastIndexOf("#");
			if (fragmentPosition >= 0) {
				if (fragmentPosition !== url.length - 1) {
					$.cookie(refreshCookie, url.substring(fragmentPosition + 1)); //store the fragment in a cookie
				}	
				url = url.substring(0, fragmentPosition);
			}

			window.location.href = url;
		};

		var applyFragmentFromCookie = function() {
			var fragment = $.cookie(refreshCookie);
			if (fragment !== null) {
				window.location.href += "#" + fragment;
				$.cookie(refreshCookie, null); //delete cookie
			}
		};

		$(document).ready(applyFragmentFromCookie);
		$.vgquotes.refresh = refresh;
	}());

	var setupSearch = function() {
		var submitSearch = function() {
			var searchQuery = $.trim($("#search-query").val());
			if (searchQuery.length > 0) {
				window.location = "/search/" + searchQuery;
			}

			return false;
		};
		
		$(document).ready(function() {
			$("#search-query").keypress(function(e) {
				if (e.which === 13) {
					submitSearch();
				}
			});

			$("#search-submit").click(submitSearch);
		});
	};

	var setupVoting = function() {
		var voting = false;
		$(".vote-for, .vote-against").live("click", function() {
			if (voting) {
				alert("Please wait for the current vote to process before voting again");
				return false;
			}

			voting = true;
			var $votingLink = $(this);
			var $container = $votingLink.parents(".quote-container");
			var direction = $votingLink.hasClass("vote-for") ? 1 : 0;
			var quoteId = $container.find("input.quote-id").val();
			var $score = $container.find(".quote-score");
			var score = $score.text();
			
			$.ajax("/vote", {
				type: "POST",
				data: { QuoteId: quoteId, Direction: direction },
				beforeSend: function() {
					$score.empty().append($("<img/>").attr({ src: $.vgquotes.loadingGif, title: "submitting your vote" + String.fromCharCode(0x2026) }));
				},
				success: function(data, status, $xhr) {
					if (data.Error !== null) {
						window.alert(data.Error);
						return;
					}

					score = data.Data.score;
					$score.attr("title", "+" + data.Data.upVotes + ", -" + data.Data.downVotes);

					//remove the voting arrow, and add the other one if needed
					$votingLink.remove();
					if (direction === 1) {
						if ($container.find(".vote-against").length === 0) {
							$("<span/>")
								.addClass("vote-against")
								.attr("title", "I hate this quote")
								.text(String.fromCharCode(0x25BC))
								.appendTo($container.find(".vote-container:last"));
						}
					} else {
						if ($container.find(".vote-for").length === 0) {
							$("<span/>")
								.addClass("vote-for")
								.attr("title", "I like this quote")
								.text(String.fromCharCode(0x25B2))
								.appendTo($container.find(".vote-container:first"));
						}
					}
				},

				complete: function() { 
					voting = false;
					var $img = $score.find("img");
					if ($img.length) {
						$img.remove();
					}
					
					$score.text(score);
				}
			});

			return false;
		});
	};

	var setupReportLink = function() {
		$(".quote-flag-link").click(function() {
			if ($(".report-dialog").length > 0) {
				return false;
			}
			var $link = $(this);
			var $container = $link.parents(".quote-container");
			var quoteId = $container.find("input.quote-id").val();

			var $row = $("<tr/>");
			var flagTypes = [ [1, "Inaccurate"], [2, "Duplicate"], [3, "Spam"], [4, "Fake"], [0, "Other"] ];
			for (var i = 0; i < flagTypes.length; i++) {
				var html = "<td><input type=\"radio\" name=\"flagType\" value=\"" 
					+ flagTypes[i][0] + "\" id=\"flag-type-" +flagTypes[i][0] + "\"/>"
					+ "<label for=\"flag-type-" + flagTypes[i][0] + "\">" + flagTypes[i][1] + "</label></td>";
				
				$row.append($(html));
			}

			var $dialog = $("<div/>").addClass("dialog report-dialog");

			var $submit = $("<input/>")
				.attr("type", "button")
				.attr("value", "Submit Report")
				.click(function() {
					$.ajax("/report", {
						type: "POST",
						data: { QuoteId: quoteId, Comment: $dialog.find("textarea").val(), FlagType: $dialog.find("input[name='flagType']:checked").val() },
						complete: function() { $dialog.remove(); },
						success: function(data, status, $xhr) {
							if (data.Error !== null) {
								alert(data.Error);
								return;
							}
						}
					});
				});

			var $cancel = $("<input/>")
				.attr("type", "button")
				.attr("value", "Cancel")
				.click(function() { $dialog.remove(); });

			$dialog
				.append($("<p/>").text("Flag as:"))
				.append($("<table/>").append($row))
				.append($("<p/>").text("Comment"))
				.append($("<textarea/>"))
				.append($("<div/>").css("text-align", "center").append($submit).append($cancel));

			//"other" should be checked by default
			$dialog.find("#flag-type-0").attr("checked", "checked");

			$("body").append($dialog);
			$dialog.center();

			return false;
		});
	};

	var setupLogin = function() {
		var showLoginForm = function() {
			var $dialog = $("#login-dialog");
			if ($dialog.length > 0) {
				$dialog.remove();
				return false;
			}

			var $usernameInput = $("<input/>").attr({ type: "text", id: "login-username" });
			var $passwordInput = $("<input/>").attr({ type: "password", id: "login-password" });
			var $submit = $("<input/>").attr("type", "submit").css("display", "none");

			var $form = $("<form/>").attr({ method: "post", action: "/login" }).submit(function() {
				$.ajax("/login", {
					type: "POST",
					data: { username: $usernameInput.val(), password: $passwordInput.val() },
					success: function(data, status, $xhr) {
						if (data.Error !== null) {
							alert(data.Error);
							return;
						}

						$.vgquotes.refresh();
					}
				});

				return false;
			});

			var $dialog = $("<div/>").addClass("dialog").attr("id", "login-dialog");

			$form.append($usernameInput).append($passwordInput).append($submit);
			$dialog.append($form);

			$("body").append($dialog);
			$dialog.center();
			$usernameInput.focus();

			return false;
		};

		$(document).ready(function() {
			$("#login-link").click(showLoginForm);
		});
	};

	(function(){
		setupLogin();
		setupSearch();
		
		$(document).ready(function() {
			$.vgquotes.preload([$.vgquotes.loadingGif]);
			setupReportLink();
			setupVoting();

			$("body").ajaxError(function(e, xhr, options, error){
				$.vgquotes.ajaxErrorHandler.call(this, xhr);
			});
			
			$("#search-query").focus();
		});
	}());
	
}(jQuery, window));