feat: Implement miles/kilometer selector

App/App.tsx

@@ -24,6 +24,7 @@ import { Screens } from './Screens';
 import { Background as LoadingBackground } from './Screens/Loading/Background';
 import {
  ApiContextProvider,
+ DistanceUnitProvider,
  ErrorContextProvider,
  FrequencyContextProvider,
  LocationContextProvider
@@ -46,7 +47,6 @@ export function App () {
  const [ready, setReady] = useState(false);
  useEffect(() => {
  Promise.all([
-
  Font.loadAsync({
  'gotham-black': require('../assets/fonts/Gotham-Black.ttf'),
  'gotham-book': require('../assets/fonts/Gotham-Book.ttf')
@@ -74,7 +74,9 @@ export function App () {
  <LocationContextProvider>
  <ApiContextProvider>
  <FrequencyContextProvider>
- <Screens />
+ <DistanceUnitProvider>
+ <Screens />
+ </DistanceUnitProvider>
  </FrequencyContextProvider>
  </ApiContextProvider>
  </LocationContextProvider>

App/Screens/About/About.tsx

@@ -16,14 +16,7 @@
 
 import Constants from 'expo-constants';
 import React from 'react';
-import {
- Linking,
- Platform,
- ScrollView,
- StyleSheet,
- Text,
- View
-} from 'react-native';
+import { Linking, Platform, ScrollView, StyleSheet, Switch, Text, View } from 'react-native';
 import { ScrollIntoView, wrapScrollView } from 'react-native-scroll-into-view';
 import { scale } from 'react-native-size-matters';
 import { NavigationInjectedProps } from 'react-navigation';
@@ -33,6 +26,7 @@ import { BackButton } from '../../components';
 import { i18n } from '../../localization';
 import { trackScreen } from '../../util/amplitude';
 import * as theme from '../../util/theme';
+import { useDistanceUnit } from '../../stores/distanceUnit';
 
 const CustomScrollView = wrapScrollView(ScrollView);
 const scrollViewOptions = {
@@ -57,9 +51,7 @@ const handleOpenAqi = () => {
 };
 
 const handleOpenArticle = () => {
- Linking.openURL(
- 'http:https://berkeleyearth.org/air-pollution-and-cigarette-equivalence/'
- );
+ Linking.openURL('http:https://berkeleyearth.org/air-pollution-and-cigarette-equivalence/');
 };
 
 const handleOpenGithub = () => {
@@ -77,35 +69,26 @@ interface AboutProps
 
 export function About (props: AboutProps) {
  const { navigation } = props;
+ const { distanceUnit, localizedDistanceUnit, setDistanceUnit } = useDistanceUnit();
 
  trackScreen('ABOUT');
 
+ const toggleDistanceSwitch = (value: boolean) => setDistanceUnit(value ? 'km' : 'mile');
+
  return (
- <CustomScrollView
- scrollIntoViewOptions={scrollViewOptions}
- style={theme.withPadding}
- >
- <BackButton
- onPress={() => navigation.goBack()}
- style={styles.backButton}
- />
+ <CustomScrollView scrollIntoViewOptions={scrollViewOptions} style={theme.withPadding}>
+ <BackButton onPress={() => navigation.goBack()} style={styles.backButton} />
 
  <View style={styles.section}>
  <Text style={styles.h2}>
  {i18n.t('about_how_do_you_calculate_the_number_of_cigarettes_title')}
  </Text>
  <Text style={theme.text}>
- {i18n.t(
- 'about_how_do_you_calculate_the_number_of_cigarettes_message_1'
- )}{' '}
+ {i18n.t('about_how_do_you_calculate_the_number_of_cigarettes_message_1')}{' '}
  <Text onPress={handleOpenArticle} style={theme.link}>
- {i18n.t(
- 'about_how_do_you_calculate_the_number_of_cigarettes_link_1'
- )}
+ {i18n.t('about_how_do_you_calculate_the_number_of_cigarettes_link_1')}
  </Text>
- {i18n.t(
- 'about_how_do_you_calculate_the_number_of_cigarettes_message_2'
- )}
+ {i18n.t('about_how_do_you_calculate_the_number_of_cigarettes_message_2')}
  <Text style={styles.micro}>&micro;</Text>
  g/m&sup3;
  {' \u207D'}
@@ -126,15 +109,11 @@ export function About (props: AboutProps) {
  style={styles.section}
  >
  <Text style={styles.h2}>{i18n.t('about_beta_inaccurate_title')}</Text>
- <Text style={theme.text}>
- {i18n.t('about_beta_inaccurate_message')}
- </Text>
+ <Text style={theme.text}>{i18n.t('about_beta_inaccurate_message')}</Text>
  </ScrollIntoView>
 
  <View style={styles.section}>
- <Text style={styles.h2}>
- {i18n.t('about_where_does_data_come_from_title')}
- </Text>
+ <Text style={styles.h2}>{i18n.t('about_where_does_data_come_from_title')}</Text>
  <Text style={theme.text}>
  {i18n.t('about_where_does_data_come_from_message_1')}{' '}
  <Text onPress={handleOpenAqi} style={theme.link}>
@@ -145,17 +124,11 @@ export function About (props: AboutProps) {
  </View>
 
  <ScrollIntoView
- onMount={
- navigation.getParam('scrollInto') === 'aboutWhyIsTheStationSoFarTitle'
- }
+ onMount={navigation.getParam('scrollInto') === 'aboutWhyIsTheStationSoFarTitle'}
  style={styles.section}
  >
- <Text style={styles.h2}>
- {i18n.t('about_why_is_the_station_so_far_title')}
- </Text>
- <Text style={theme.text}>
- {i18n.t('about_why_is_the_station_so_far_message')}
- </Text>
+ <Text style={styles.h2}>{i18n.t('about_why_is_the_station_so_far_title')}</Text>
+ <Text style={theme.text}>{i18n.t('about_why_is_the_station_so_far_message')}</Text>
  </ScrollIntoView>
 
  <View style={styles.section}>
@@ -169,6 +142,18 @@ export function About (props: AboutProps) {
  </Text>
  </View>
 
+ <View style={styles.distance}>
+ <Text style={styles.h2}>{i18n.t('about_distance_unit_title')}</Text>
+ <View style={styles.distanceSwitchWrapper}>
+ <Switch
+ onValueChange={toggleDistanceSwitch}
+ trackColor={{ true: theme.primaryColor, false: theme.iconBackgroundColor }}
+ value={distanceUnit === 'km'}
+ />
+ <Text style={styles.distanceText}>{localizedDistanceUnit('long')}</Text>
+ </View>
+ </View>
+
  <View style={styles.credits}>
  <Text style={styles.h2}>{i18n.t('about_credits_title')}</Text>
  <Text style={theme.text}>
@@ -217,6 +202,23 @@ const styles = StyleSheet.create({
  marginBottom: theme.spacing.normal,
  paddingTop: theme.spacing.big
  },
+ distance: {
+ borderTopColor: theme.iconBackgroundColor,
+ borderTopWidth: 1,
+ marginBottom: theme.spacing.big,
+ paddingTop: theme.spacing.big
+ },
+ distanceSwitchWrapper: {
+ display: 'flex',
+ flexDirection: 'row',
+ alignItems: 'center'
+ },
+ distanceText: {
+ ...theme.text,
+ fontSize: scale(14),
+ paddingLeft: theme.spacing.small,
+ textTransform: 'capitalize'
+ },
  h2: {
  ...theme.title,
  fontSize: scale(20),

App/Screens/Details/Details.tsx

@@ -27,11 +27,8 @@ import { Header } from './Header';
 import { i18n } from '../../localization';
 import { ApiContext, CurrentLocationContext } from '../../stores';
 import { trackScreen } from '../../util/amplitude';
-import {
- distanceToStation,
- getCorrectLatLng,
- DistanceUnit
-} from '../../util/station';
+import { useDistanceUnit } from '../../stores/distanceUnit';
+import { distanceToStation, getCorrectLatLng } from '../../util/station';
 
 interface DetailsProps extends NavigationInjectedProps {}
 
@@ -43,9 +40,8 @@ export function Details (props: DetailsProps) {
 
  const [showMap, setShowMap] = useState(false);
  const { api } = useContext(ApiContext);
- const { currentLocation: _currentLocation } = useContext(
- CurrentLocationContext
- );
+ const { currentLocation: _currentLocation } = useContext(CurrentLocationContext);
+ const { distanceUnit } = useDistanceUnit();
 
  trackScreen('DETAILS');
 
@@ -68,14 +64,7 @@ export function Details (props: DetailsProps) {
  // object` error. It's related to the MapView below.
  const currentLocation = { ..._currentLocation! };
 
- const haversineDistanceUnit = i18n.t(
- 'haversine_distance_unit'
- ) as DistanceUnit;
- const distance = distanceToStation(
- currentLocation!,
- api!,
- haversineDistanceUnit
- );
+ const distance = distanceToStation(currentLocation!, api!, distanceUnit);
 
  const station = {
  description: api!.shootISmoke.station || '',
@@ -94,11 +83,9 @@ export function Details (props: DetailsProps) {
  <MapView
  initialRegion={{
  latitude: (currentLocation.latitude + station.latitude) / 2,
- latitudeDelta:
- Math.abs(currentLocation.latitude - station.latitude) * 2,
+ latitudeDelta: Math.abs(currentLocation.latitude - station.latitude) * 2,
  longitude: (currentLocation.longitude + station.longitude) / 2,
- longitudeDelta:
- Math.abs(currentLocation.longitude - station.longitude) * 2
+ longitudeDelta: Math.abs(currentLocation.longitude - station.longitude) * 2
  }}
  onMapReady={handleMapReady}
  style={styles.map}

App/Screens/Details/Distance/Distance.tsx

@@ -20,13 +20,15 @@ import { StyleSheet, Text } from 'react-native';
 import { Banner } from '../../../components';
 import { i18n } from '../../../localization';
 import * as theme from '../../../util/theme';
+import { useDistanceUnit } from '../../../stores/distanceUnit';
 
 interface DistanceProps {
  distance: number;
 }
 
 export function Distance (props: DistanceProps) {
- const distanceUnit = i18n.t('distance_unit');
+ const { localizedDistanceUnit } = useDistanceUnit();
+ const distanceUnit = localizedDistanceUnit('short');
 
  return (
  <Banner elevated shadowPosition="top" style={styles.banner}>

App/Screens/Home/Header/Header.tsx

@@ -15,60 +15,41 @@
 // along with Sh**t! I Smoke. If not, see <http:https://www.gnu.org/licenses/>.
 
 import React, { useContext } from 'react';
-import {
- GestureResponderEvent,
- Image,
- StyleSheet,
- Text,
- View
-} from 'react-native';
+import { GestureResponderEvent, Image, StyleSheet, Text, View } from 'react-native';
 import { scale } from 'react-native-size-matters';
 
 import alert from '../../../../assets/images/alert.png';
 import { ChangeLocation, CurrentLocation } from '../../../components';
 import { i18n } from '../../../localization';
 import { ApiContext, CurrentLocationContext } from '../../../stores';
-import {
- distanceToStation,
- isStationTooFar,
- DistanceUnit
-} from '../../../util/station';
+import { distanceToStation, isStationTooFar } from '../../../util/station';
+import { useDistanceUnit } from '../../../stores/distanceUnit';
 import * as theme from '../../../util/theme';
 
 interface HeaderProps {
- onChangeLocationClick: (event: GestureResponderEvent) => void;
+ onChangeLocationClick: (event: GestureResponderEvent) => void
 }
 
 export function Header (props: HeaderProps) {
  const { api } = useContext(ApiContext)!;
  const { currentLocation, isGps } = useContext(CurrentLocationContext);
+ const { distanceUnit, localizedDistanceUnit } = useDistanceUnit();
  const { onChangeLocationClick } = props;
 
- const distanceUnit = i18n.t('distance_unit');
- const haversineDistanceUnit = i18n.t(
- 'haversine_distance_unit'
- ) as DistanceUnit;
- const distance = distanceToStation(
- currentLocation!,
- api!,
- haversineDistanceUnit
- );
+ const shortDistanceUnit = localizedDistanceUnit('short');
+ const distance = distanceToStation(currentLocation!, api!, distanceUnit);
  const isTooFar = isStationTooFar(currentLocation!, api!);
 
  return (
  <View style={styles.container}>
  <View style={styles.currentLocation}>
- <CurrentLocation
- api={api!}
- currentLocation={currentLocation!}
- numberOfLines={2}
- />
+ <CurrentLocation api={api!} currentLocation={currentLocation!} numberOfLines={2} />
  <View style={styles.distance}>
  {isTooFar && <Image source={alert} style={styles.warning} />}
  <Text style={styles.distanceText}>
  {i18n.t('home_header_air_quality_station_distance', {
  distanceToStation: distance,
- distanceUnit
+ distanceUnit: shortDistanceUnit
  })}{' '}
  {!isGps && i18n.t('home_header_from_search')}
  </Text>

App/localization/languages/en-us.json

@@ -50,8 +50,10 @@
  "details_header_latest_update_ago": "ago",
  "details_header_primary_pollutant_label": "Primary Pollutant:",
  "details_distance_label": "AQI Station: {{distanceToStation}}{{distanceUnit}} away",
- "distance_unit": "mi",
- "haversine_distance_unit": "mile",
+ "distance_unit_short_km": "km",
+ "distance_unit_short_mi": "mi",
+ "distance_unit_long_km": "kilometer",
+ "distance_unit_long_mi": "mile",
  "past_stations_loading": "Loading",
  "past_stations_date_from_to": "{{startDate}} to {{endDate}}",
  "past_stations_monitored_weekly": "Stations monitored from you during the week",
@@ -76,6 +78,7 @@
  "about_weird_results_message_1": "We have also encountered a few surprising results: large cities with better air than small villages; sudden huge increases in the number of cigarettes; stations of the same town showing significantly different numbers... The fact is air quality depends on several factors such as temperature, pressure, humidity and even wind direction and intensity. If the result seems weird for you, check",
  "about_weird_results_link_1": "WAQI",
  "about_weird_results_message_2": "for more information and history on your station.",
+ "about_distance_unit_title": "Distance Unit",
  "about_credits_title": "Credits",
  "about_credits_concept_and_development": "Concept & Development by",
  "about_credits_design_and_copywriting": "Design & Copywriting by",
@@ -84,4 +87,4 @@
  "about_credits_available_github": "available on Github",
  "about_language": "Language",
  "current_location_unknown_station": "Unknown AQI station"
-}
+}

App/localization/languages/en.json

@@ -50,8 +50,10 @@
  "details_header_latest_update_ago": "ago",
  "details_header_primary_pollutant_label": "Primary Pollutant:",
  "details_distance_label": "AQI Station: {{distanceToStation}}{{distanceUnit}} away",
- "distance_unit": "km",
- "haversine_distance_unit": "km",
+ "distance_unit_short_km": "km",
+ "distance_unit_short_mi": "mi",
+ "distance_unit_long_km": "kilometer",
+ "distance_unit_long_mi": "mile",
  "past_stations_loading": "Loading",
  "past_stations_date_from_to": "{{startDate}} to {{endDate}}",
  "past_stations_monitored_weekly": "Stations monitored from you during the week",
@@ -76,6 +78,7 @@
  "about_weird_results_message_1": "We have also encountered a few surprising results: large cities with better air than small villages; sudden huge increases in the number of cigarettes; stations of the same town showing significantly different numbers... The fact is air quality depends on several factors such as temperature, pressure, humidity and even wind direction and intensity. If the result seems weird for you, check",
  "about_weird_results_link_1": "WAQI",
  "about_weird_results_message_2": "for more information and history on your station.",
+ "about_distance_unit_title": "Distance Unit",
  "about_credits_title": "Credits",
  "about_credits_concept_and_development": "Concept & Development by",
  "about_credits_design_and_copywriting": "Design & Copywriting by",
@@ -84,4 +87,4 @@
  "about_credits_available_github": "available on Github",
  "about_language": "Language",
  "current_location_unknown_station": "Unknown AQI station"
-}
+}