start localization

website/src/lib/units.ts

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+import { get } from 'svelte/store';
+import { settings } from './stores';
+import { _ } from 'svelte-i18n';
+
+export function kilometersToMiles(value: number) {
+    return value * 0.621371;
+}
+
+export function metersToFeet(value: number) {
+    return value * 3.28084;
+}
+
+export function celsiusToFahrenheit(value: number) {
+    return value * 1.8 + 32;
+}
+
+export function distancePerHourToSecondsPerDistance(value: number) {
+    return 3600 / value;
+}
+
+export function secondsToHHMMSS(value: number) {
+    var hours = Math.floor(value / 3600);
+    var minutes = Math.floor(value / 60) % 60;
+    var seconds = Math.round(value % 60);
+
+    return [hours, minutes, seconds]
+        .map((v) => (v < 10 ? '0' + v : v))
+        .filter((v, i) => v !== '00' || i > 0)
+        .join(':');
+}
+
+// Get a string representation of the value with units
+export function getDistanceWithUnits(value: number, convert: boolean = true) {
+    if (convert) {
+        return getConvertedDistance(value).toFixed(2) + ' ' + getDistanceUnits();
+    } else {
+        return value.toFixed(2) + ' ' + getDistanceUnits();
+    }
+}
+
+export function getVelocityWithUnits(value: number, convert: boolean = true) {
+    const velocityUnits = get(settings).velocityUnits;
+    const distanceUnits = get(settings).distanceUnits;
+    if (velocityUnits === 'speed') {
+        if (convert) {
+            return getConvertedVelocity(value).toFixed(2) + ' ' + getVelocityUnits();
+        } else {
+            return value.toFixed(2) + ' ' + getVelocityUnits();
+        }
+    } else {
+        if (convert) {
+            return secondsToHHMMSS(getConvertedVelocity(value));
+        } else {
+            return secondsToHHMMSS(value);
+        }
+    }
+}
+
+export function getElevationWithUnits(value: number, convert: boolean = true) {
+    if (convert) {
+        return getConvertedElevation(value).toFixed(0) + ' ' + getElevationUnits();
+    } else {
+        return value.toFixed(0) + ' ' + getElevationUnits();
+    }
+}
+
+export function getHeartRateWithUnits(value: number) {
+    return value.toFixed(0) + ' ' + getHeartRateUnits();
+}
+
+export function getCadenceWithUnits(value: number) {
+    return value.toFixed(0) + ' ' + getCadenceUnits();
+}
+
+export function getPowerWithUnits(value: number) {
+    return value.toFixed(0) + ' ' + getPowerUnits();
+}
+
+export function getTemperatureWithUnits(value: number, convert: boolean = true) {
+    if (convert) {
+        return getConvertedTemperature(value).toFixed(0) + ' ' + getTemperatureUnits();
+    } else {
+        return value.toFixed(0) + ' ' + getTemperatureUnits();
+    }
+}
+
+// Get the units
+export function getDistanceUnits() {
+    return get(settings).distanceUnits === 'metric' ? get(_)('units.kilometers') : get(_)('units.miles');
+}
+
+export function getVelocityUnits() {
+    const velocityUnits = get(settings).velocityUnits;
+    const distanceUnits = get(settings).distanceUnits;
+    if (velocityUnits === 'speed') {
+        return distanceUnits === 'metric' ? get(_)('units.kilometers_per_hour') : get(_)('units.miles_per_hour');
+    } else {
+        return distanceUnits === 'metric' ? get(_)('units.minutes_per_kilometer') : get(_)('units.minutes_per_mile');
+
+    }
+}
+
+export function getElevationUnits() {
+    return get(settings).distanceUnits === 'metric' ? get(_)('units.meters') : get(_)('units.feet');
+}
+
+export function getHeartRateUnits() {
+    return get(_)('units.heartrate');
+}
+
+export function getCadenceUnits() {
+    return get(_)('units.cadence');
+}
+
+export function getPowerUnits() {
+    return get(_)('units.power');
+}
+
+export function getTemperatureUnits() {
+    return get(settings).temperatureUnits === 'celsius' ? get(_)('units.celsius') : get(_)('units.fahrenheit');
+}
+
+// Convert only the value
+export function getConvertedDistance(value: number) {
+    return get(settings).distanceUnits === 'metric' ? value : kilometersToMiles(value);
+}
+
+export function getConvertedElevation(value: number) {
+    return get(settings).distanceUnits === 'metric' ? value : metersToFeet(value);
+}
+
+export function getConvertedVelocity(value: number) {
+    const velocityUnits = get(settings).velocityUnits;
+    const distanceUnits = get(settings).distanceUnits;
+    if (velocityUnits === 'speed') {
+        return distanceUnits === 'metric' ? value : kilometersToMiles(value);
+    } else {
+        return distanceUnits === 'metric' ? distancePerHourToSecondsPerDistance(value) : distancePerHourToSecondsPerDistance(kilometersToMiles(value));
+    }
+}
+
+export function getConvertedTemperature(value: number) {
+    return get(settings).temperatureUnits === 'celsius' ? value : celsiusToFahrenheit(value);
+}