var defaults = ["1/1", "2-1", "3*(3+2)", "5*3", "4+12", "0+16"];

var Card = (function() {
    var self = Object.create({}, {
        val: {
            value: -1
        },
		id: {
			value: -1
		},
        index: {
            value: -1
        },
        isMatch: {
            value: function(card) {
                if (this.val == card.val) {
                    return true;
                }
                return false;
            }
        }
    });
    return self;
})();

var Game = (function() {
    var self = Object.create({}, {
        cards: {
            value: null
        },
        matches: {
            value: 0
        },
        init: {
            value: function(count) {
				if(typeof count !== "number"){
					log("Cards count must be an number");	
					return;
				}
				this.cards = new Array(count);
                for (i = 0; i < this.cards.length / 2; i++) {
                    var card = Object.create(Card, {
                        val: {
                            value: i+1
                        },
						id: {
							value: i*2
						}
                    });
					card.index = card.id;
                    var card2 = Object.create(Card, {
                        val: {
                            value: i+1
                        },
						id: {
							value: card.index+1
						}
                    });
					card2.index = card2.id;
					this.cards[card.index] = card;
					this.cards[card2.index] = card2;
                }
            }
        },
        selected: {
            value: null
        }
    });
    return self;
})();

function onTemplateLoadedCallback() {
	$("select[name=count]").each(function(i, select) {
		var min = $(select).data("min");
		var max = $(select).data("max");
		for(var i = min ; i <= max ; i=i+2) {
			var option = $("<option/>");
			option.val(i);
			option.text(fr.njin.i18n.memory.parameters.option.cards(i));
			$(select).append(option);
		}
	});
	$("#timeoutValue").text($("input[name=timeout]").val());	
	$("input[name=timeout]").change(function(){
		$("#timeoutValue").text($(this).val());
	});
}

function reloadApp(app) {
	var cardsCount = parseInt(app.parameters.value("count"));
	var timeout = parseInt(app.parameters.value("timeout"))*1000;
	
	var scene = $("#scene");
	var table = $("<div id='table'/>");
	scene.empty();
	scene.append(table);

	var game = Object.create(Game);			
	game.init(cardsCount);

	var rows = new Array(game.cards.length/2);
	for(i = 0 ; i < game.cards.length/2 ; i++) {
		var row = $("<div/>");
		table.append(row);
		rows[i] = row;
	}

	if(!app.onEdit)
		app.utils.shuffle(game.cards);
		
	for(i = 0 ; i < game.cards.length ; i++) {
		(function(){
			var card = game.cards[i];
			var defaultValue = defaults[card.index]
			card.index = i;

			var pFrontTextKey = cardTextParameterKey(card, 0);
			var pBackTextKey = cardTextParameterKey(card, 1);
			window.card = card;
			window.frontDisplayValue = app.parameters.value(pFrontTextKey) || "?";
			window.backDisplayValue = app.parameters.value(pBackTextKey) || defaultValue;

			var cardView = $(Mustache.render(cardTemplate, window));
			rows[i%2].append(cardView);
			cardView.data("card", card);

			var checkbox = cardView.find("input[name='switch']");
			function setSwicth(index) {
				var val = app.parameters.value("#UsePicture"+cardParameterKey(card, index)) === "true";
				var $p = cardView.find(".cards > div").eq(index);
				if(val) {
					$p.addClass("usePicture");
				}else {
					$p.removeClass("usePicture");
				}
				checkbox.eq(index).attr("checked", val);
			}
			checkbox.each(function(index) {
				$(this).change(function() {
					app.parameters.value("#UsePicture"+cardParameterKey(card, index), $(this).is(':checked'));
					setSwicth(index);
				});
			});
			setSwicth(0);
			setSwicth(1);
			
			var dropzone = cardView.find(".dropzone");
			
			function setPicture(index) {
				var f = $.parseJSON(app.parameters.value("#Picture"+cardParameterKey(card, index)));
				var pictureHolder = dropzone.eq(index).parent().find(">div:eq(0)");
				if(f !== null) {
					var $img = $('<img src="" class="uploadPic" title="" alt="" />').attr(f);
				    pictureHolder.empty();
					pictureHolder.append($img);
				}
			}
			dropzone.each(function(index){
				app.utils.droppable($(this), function(f) {
					app.parameters.value("#Picture"+cardParameterKey(card, index), JSON.stringify(f));
					setPicture(index);
				});
			});
			setPicture(0);
			setPicture(1);
		})();
	}
	if(!app.onEdit) {
		$(".cards>div:first-child").click(function(){
			var cardView = $(this).parent();
			var card = cardView.parent().parent().data("card");
			cardView.toggleClass("flip");
			log("Flip card at index "+card.index+" w/ value "+card.val);
			if(game.selected == null)
				game.selected = card;
			else{
				var toCompare = game.selected;
				log("Compare w/ card at index "+toCompare.index+" w/ value "+toCompare.val);
				var isMatch = card.isMatch(toCompare);
				if(!isMatch) {
					var index = toCompare.index;
					var otherCardView = rows[index%2].find(">div").eq(Math.floor(index/2)).find(".cards:eq(0)");
					setTimeout(function(){
						cardView.toggleClass("flip");
						otherCardView.toggleClass("flip");
					}, timeout);
				}else{
					game.matches++;
				}
				game.selected = null;
			}
		});
	}else{
		$(".card .text > div").each(function(i, e) {
			var card = $(e).parent().parent().parent().parent().parent().parent().data("card");
			var pKey = cardTextParameterKey(card, i);
			e.contentEditable = true;
			$(e).bind('blur keyup paste', function(){
				app.parameters.value(pKey, $(this).text());
			});
		});
		$(".card-container .actions button[role=flip]").click(function(){
			var cardView = $(this).parent().parent().find(">.cards:eq(0)");
			cardView.toggleClass("flip");
		});
		$(".card-container .actions button[role=flip]").click();
	}
	if(window.sankore)
		window.sankore.enableDropOnWidget(app.onEdit);
}

function cardParameterKey(card, i) {
	return "card"+card.id+(i%2==0 ? "Front":"Back");
}

function cardTextParameterKey(card, i) {
	return cardParameterKey(card, i)+"Text";
}

function reloadCallback(parameter) {
	if(parameter === undefined || parameter.key === "count")
		reloadApp(this);
}

$(document).ready(function(){
	var callbacks = {
		onTemplatesLoaded: onTemplateLoadedCallback,
		onEdit: reloadApp,
		onView: reloadApp
	};
	init(reloadCallback, {toolbar: toolbarTemplate, parameters: parametersTemplate}, callbacks);
});