Mini Kabibi Habibi

DXTravel.HotDeals = function(params) {

    var NYImages = [
            "images/new_york/01.jpg",
            "images/new_york/02.jpg",
            "images/new_york/03.jpg",
            "images/new_york/04.jpg",
            "images/new_york/05.jpg",
            "images/new_york/06.jpg",
            "images/new_york/07.jpg",
            "images/new_york/08.jpg",
            "images/new_york/09.jpg",
            "images/new_york/10.jpg"
    ];

    var flightsMapFn = function(flights) {
        model.loading(false);

        if(!flights.itineraries || !flights.itineraries.length) {
            model.notResults(true);
            return;
        }

        var imageIndex = 0;
        var mappedFlights = $.map(flights.itineraries, function(item, index) {
            var currencyKoeff = 1,
                from,
                to,
                price,
                layover,
                duration,
                image = NYImages[imageIndex];

            imageIndex++;
            if(imageIndex >= NYImages.length)
                imageIndex = 0;

            if(item.price) {
                if(item.price.currencyCode == "RUB")
                    currencyKoeff = 31;
                if(item.price.currencyCode == "INR")
                    currencyKoeff = 55;

                price = '$ ' + Number(item.price.totalAmount / currencyKoeff).toFixed(2);
            }

            if (item.outboundInfo) {
                var outboundStartAirport = item.outboundInfo.airports[0];
                var outboundAirportEnd = item.outboundInfo.airports[item.outboundInfo.airports.length - 1];
                $.each(item.location, function (index, locationItem) {
                    if (locationItem.code == outboundStartAirport)
                        from = locationItem;
                    if (locationItem.code == outboundAirportEnd)
                        to = locationItem;
                });
                layover = item.outboundInfo.layoverInMin;
                duration = item.outboundInfo.durationInMin;
            }

            return {
                id: index,
                image: image,
                price: price,
                from: from,
                to: to,
                layover: Number(layover / 60).toFixed(1),
                duration: Number(duration / 60).toFixed(1),
                timeInAir: Number((duration - layover) / 60).toFixed(1),
            }
        });
        model.flights(mappedFlights.slice(0, 30));
        sessionStorage.setItem("foundFlights", JSON.stringify(mappedFlights));
    };

    var SEARCH_START_DATE_STRING = Globalize.format(new Date($.now() + 15 * DXTravel.MS_PER_DAY), "yyyy-MM-dd"),
        SEARCH_END_DATE_STRING = Globalize.format(new Date($.now() + 22 * DXTravel.MS_PER_DAY), "yyyy-MM-dd");

    var model = {
        handlePurchaseClick: function() {
            var url = "http://demos.devexpress.com/DXTREME/Travel/DXTravel.Web/#FindFlight/NYC/SEA/" + SEARCH_START_DATE_STRING + "/" + SEARCH_END_DATE_STRING;
            if(window.WinJS) {
                Windows.System.Launcher.launchUriAsync(new Windows.Foundation.Uri(url));
            } else {
                window.open(url);
            }
        },
        flights: ko.observableArray(),
        selectedFlight: ko.observable(),
        notResults: ko.observable(),
        loading: ko.observable(true),
        flightItemClick: function(e) {
            if(model.selectedFlight()) {
                model.selectedFlight().selected(false);
            }
            e.itemData.selected(true);
            model.selectedFlight(e.itemData);
        },
        viewShown: function () {
            var flights = $.parseJSON(sessionStorage.getItem("foundFlights")) || [];
            if (!flights.length) {
                DXTravel.FlightUtils.searchFlight({
                    from: 'SEA',
                    to: 'NYC',
                    outboundDate: SEARCH_START_DATE_STRING,
                    inboundDate: SEARCH_END_DATE_STRING
                }, flightsMapFn);
            }
            else {
                model.flights(flights.slice(0, 30));
                model.loading(false);
            }
        }
    };

    model.flights.subscribe(function (items) {
        $.map(items, function (item) {
            item.selected = ko.observable();
        });
        if (items.length && !model.selectedFlight()) {
            items[0].selected(true);
            model.selectedFlight(items[0]);
        }
    });

    return model;
};