/* 
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */


function ftoc(f) {
    return (f - 32) * 5 / 9;
}

function loadWeather(reload) {
    if (typeof reload == "undefined") {
        reload = false;
    } else {
        reload = reload == true;
    }

    if (userPosition.coords.accuracy > 99999) {
        app.dialog.alert("Couldn't find your location.  Wait for a GPS signal and try again.", "Error");
        return;
    }

    var requestfinished = false;
    var weatherdialogopen = false;
    $.ajax({
        url: SETTINGS.weatherapi,
        dataType: 'json',
        data: {
            // Round the numbers off to increase user privacy
            // Accuracy with two decimal places is ~1.1km/0.6mi
            latitude: userPosition.coords.latitude.toFixed(2),
            longitude: userPosition.coords.longitude.toFixed(2)
        },
        timeout: 15 * 1000,
        success: function (resp) {
            if (weatherdialogopen) {
                app.dialog.close();
                weatherdialogopen = false;
            }
            requestfinished = true;
            if (resp.status == "OK") {
                var mintemp = (getStorage("units") == "metric" ? Math.round(ftoc(resp.temp.min)) + " °C" : Math.round(resp.temp.min) + " °F");
                var maxtemp = (getStorage("units") == "metric" ? Math.round(ftoc(resp.temp.max)) + " °C" : Math.round(resp.temp.max) + " °F");
                $("#lowtemp").html(mintemp);
                $("#hightemp").html(maxtemp);
                $("#precipchance").text(Math.round(resp.precipitation.chance * 100.0) + "% chance");
                if (getStorage("units") == "metric") {
                    $("#windspeed").text(Math.round(resp.windspeed * 1.609344) + " km/h");
                } else {
                    $("#windspeed").text(Math.round(resp.windspeed) + " mph");
                }
                if (SETTINGS.weathericons.includes(resp.icon)) {
                    $("#weathericon").attr("src", "assets/images/weather-" + resp.icon + ".svg");
                } else {
                    $("#weathericon").attr("src", "assets/images/weather-none.svg");
                }
                $("#forecast-location").text(resp.location_name);
                $("#forecast-info").text("Forecast covers the next " + resp.forecast_hours + " hours (until " + timestampToTimeString(resp.forecast_until) + ").");
            } else {
                app.dialog.alert(resp.message, "Error");
            }
        },
        error: function (jqXHR, status, errorThrown) {
            if (weatherdialogopen) {
                app.dialog.close();
                weatherdialogopen = false;
            }
            requestfinished = true;
            app.dialog.alert("There was a network issue while checking the weather.  Please try again.", "Error");
        }
    });

    // Open a loading message if there's a delay or we're reloading
    if (reload) {
        app.dialog.preloader("Checking Weather...");
        weatherdialogopen = true;
    } else {
        setTimeout(function () {
            if (!requestfinished) {
                app.dialog.preloader("Checking Weather...");
                weatherdialogopen = true;
            }
        }, 1000);
    }
}