angular.module('CartService', ['ObserverService', 'AjaxService', 'MapService']).service('Cart', function (Observer, Ajax, $q, Map) {
    var obCart = Observer.create();
    var local_restaurant_id = null;
    var cart_defer = null;

    this.getOb = function () {
        return obCart;
    };

    this.refreshCart = function () {
        cart_defer = null;
        obCart.notify();
    };

    this.getCart = function (restaurant_id) {
        if (!cart_defer) {
            cart_defer = $q.defer();
            var defer = cart_defer;
            Ajax.get("Cart", "getCart", [restaurant_id], function (response) {
                if (restaurant_id) {
                    local_restaurant_id = restaurant_id;
                }
                defer.resolve(response);
            });
        }
        return cart_defer.promise;
    };

    this.addCart = function (item_id, restaurant_id) {
        var defer_operation = $q.defer();
        Ajax.get("Cart", "addCart", [item_id, restaurant_id], function (response) {
            local_restaurant_id = restaurant_id;
            defer_operation.resolve(response);
            defer_operation = null;
            cart_defer = null;
            obCart.notify();
        });
        return defer_operation.promise;
    };

	this.clearCart = function (restaurant_id) {
		var defer_operation = $q.defer();
		Ajax.get("Cart", "clearCart", [restaurant_id], function (response) {
			local_restaurant_id = restaurant_id;
			defer_operation.resolve(response);
			defer_operation = null;
			cart_defer = null;
			obCart.notify();
		});
		return defer_operation.promise;
	};

    this.removeCart = function (index, restaurant_id) {
        var defer_operation = $q.defer();
        Ajax.get("Cart", "removeCart", [index, restaurant_id], function (response) {
            local_restaurant_id = restaurant_id;
            defer_operation.resolve(response);
            defer_operation = null;
            cart_defer = null;
            obCart.notify();
        });
        return defer_operation.promise;
    };

    this.setVariations = function (variations, index, restaurant_id) {
        var defer_operation = $q.defer();
        Ajax.post("Cart", "setVariations", [index, restaurant_id], {variations: variations}, function (response) {
            local_restaurant_id = restaurant_id;
            defer_operation.resolve(response);
            defer_operation = null;
            cart_defer = null;
            obCart.notify();
        });

        return defer_operation.promise;
    };

	this.setIngredients = function (ingredients, index, restaurant_id) {
		var defer_operation = $q.defer();
		Ajax.post("Cart", "setIngredients", [index, restaurant_id], {ingredients: ingredients}, function (response) {
			local_restaurant_id = restaurant_id;
			defer_operation.resolve(response);
			defer_operation = null;
			cart_defer = null;
			obCart.notify();
		});

		return defer_operation.promise;
	};

    this.setGift = function (gift_id, index, restaurant_id) {
        var defer_operation = $q.defer();
        Ajax.get("Cart", "setGift", [gift_id, index, restaurant_id], function (response) {
            local_restaurant_id = restaurant_id;
            defer_operation.resolve(response);
            defer_operation = null;
            cart_defer = null;
            obCart.notify();
        });

        return defer_operation.promise;
    };

    this.removeGift = function (index, restaurant_id) {
        var defer_operation = $q.defer();
        Ajax.get("Cart", "removeGift", [index, restaurant_id], function (response) {
            local_restaurant_id = restaurant_id;
            defer_operation.resolve(response);
            defer_operation = null;
            cart_defer = null;
            obCart.notify();
        });

        return defer_operation.promise;
    };

    this.addVariation = function (item_id, index, restaurant_id) {
        var defer_operation = $q.defer();
        Ajax.get("Cart", "addVariation", [item_id, index, restaurant_id], function (response) {
            local_restaurant_id = restaurant_id;
            defer_operation.resolve(response);
            defer_operation = null;
            cart_defer = null;
            obCart.notify();
        });

        return defer_operation.promise;
    };

	this.addIngredient = function (item_id, index, restaurant_id) {
		var defer_operation = $q.defer();
		Ajax.get("Cart", "addIngredient", [item_id, index, restaurant_id], function (response) {
			local_restaurant_id = restaurant_id;
			defer_operation.resolve(response);
			defer_operation = null;
			cart_defer = null;
			obCart.notify();
		});

		return defer_operation.promise;
	};

    this.addTextVariation = function (text, index, restaurant_id) {
        var defer_operation = $q.defer();
        Ajax.post("Cart", "addTextVariation", [index, restaurant_id], {text: text}, function (response) {
            local_restaurant_id = restaurant_id;
            defer_operation.resolve(response);
            defer_operation = null;
            cart_defer = null;
            obCart.notify();
        });

        return defer_operation.promise;
    };

    this.removeVariation = function (index, variation_index, restaurant_id) {
        var defer_operation = $q.defer();
        Ajax.get("Cart", "removeVariation", [index, variation_index, restaurant_id], function (response) {
            local_restaurant_id = restaurant_id;
            defer_operation.resolve(response);
            defer_operation = null;
            cart_defer = null;
            obCart.notify();
        });

        return defer_operation.promise;
    };

	this.removeIngredient = function (index, ingredient_index, restaurant_id) {
		var defer_operation = $q.defer();
		Ajax.get("Cart", "removeIngredient", [index, ingredient_index, restaurant_id], function (response) {
			local_restaurant_id = restaurant_id;
			defer_operation.resolve(response);
			defer_operation = null;
			cart_defer = null;
			obCart.notify();
		});

		return defer_operation.promise;
	};

    this.hasCart = function (cart) {
        return cart && cart.items && cart.items.length > 0;
    };

    this.setNote = function (text, restaurant_id) {
        var defer_operation = $q.defer();
        Ajax.post("Cart", "setNote", [restaurant_id], {text: text}, function (response) {
            local_restaurant_id = restaurant_id;
            defer_operation.resolve(response);
            defer_operation = null;
            cart_defer = null;
            obCart.notify();
        });
        return defer_operation.promise;
    };

});