Organize common code

1 files changed, 83 insertions, 0 deletions

diff --git a/modern/src/common/util/converter.js b/modern/src/common/util/converter.js
new file mode 100644
index 00000000..61e2dfe6
--- /dev/null
+++ b/modern/src/common/util/converter.js
@@ -0,0 +1,83 @@
+const speedConverter = (unit) => {
+  switch (unit) {
+    case 'kmh':
+      return 1.852;
+    case 'mph':
+      return 1.15078;
+    case 'kn':
+    default:
+      return 1;
+  }
+};
+
+export const speedUnitString = (unit, t) => {
+  switch (unit) {
+    case 'kmh':
+      return t('sharedKmh');
+    case 'mph':
+      return t('sharedMph');
+    case 'kn':
+    default:
+      return t('sharedKn');
+  }
+};
+
+export const speedFromKnots = (value, unit) => value * speedConverter(unit);
+
+export const speedToKnots = (value, unit) => value / speedConverter(unit);
+
+const distanceConverter = (unit) => {
+  switch (unit) {
+    case 'mi':
+      return 0.000621371;
+    case 'nmi':
+      return 0.000539957;
+    case 'km':
+    default:
+      return 0.001;
+  }
+};
+
+export const distanceUnitString = (unit, t) => {
+  switch (unit) {
+    case 'mi':
+      return t('sharedMi');
+    case 'nmi':
+      return t('sharedNmi');
+    case 'km':
+    default:
+      return t('sharedKm');
+  }
+};
+
+export const distanceFromMeters = (value, unit) => value * distanceConverter(unit);
+
+export const distanceToMeters = (value, unit) => value / distanceConverter(unit);
+
+const volumeConverter = (unit) => {
+  switch (unit) {
+    case 'impGal':
+      return 4.546;
+    case 'usGal':
+      return 3.785;
+    case 'ltr':
+    default:
+      return 1;
+  }
+};
+
+export const volumeUnitString = (value, unit, t) => {
+  switch (unit) {
+    case 'impGal':
+      return t('sharedGallonAbbreviation');
+    case 'usGal':
+      return t('sharedGallonAbbreviation');
+    case 'ltr':
+    default:
+      return t('sharedLiterAbbreviation');
+  }
+};
+
+export const volumeFromLiters = (value, unit) => value / volumeConverter(unit);
+
+export const volumeToLiters = (value, unit) => value * volumeConverter(unit);