added Maps functions by labnol

Author: Sourabh Choraria

functions/GOOGLEMAPS_DIRECTIONS.gs

@@ -0,0 +1,32 @@
+// @author Amit Agarwal https://www.labnol.org/google-maps-sheets-200817
+/**
+ * Find the driving direction between two
+ * locations on Google Maps.
+ *
+ * =GOOGLEMAPS_DIRECTIONS("NY 10005", "Hoboken NJ", "walking")
+ *
+ * @param {String} origin The address of starting point
+ * @param {String} destination The address of destination
+ * @param {String} mode The mode of travel (driving, walking, bicycling or transit)
+ * @return {String} The driving direction
+ * @customFunction
+ */
+const GOOGLEMAPS_DIRECTIONS = (origin, destination, mode = 'driving') => {
+  const { routes = [] } = Maps.newDirectionFinder()
+    .setOrigin(origin)
+    .setDestination(destination)
+    .setMode(mode)
+    .getDirections();
+  if (!routes.length) {
+    throw new Error('No route found!');
+  }
+  return routes
+    .map(({ legs }) => {
+      return legs.map(({ steps }) => {
+        return steps.map((step) => {
+          return step.html_instructions.replace(/<[^>]+>/g, '');
+        });
+      });
+    })
+    .join(', ');
+};

functions/GOOGLEMAPS_DISTANCE.gs

@@ -1,6 +1,7 @@
 // @author Amit Agarwal https://www.labnol.org/google-maps-sheets-200817
 /**
- * Calculate the distance between two locations on Google Maps.
+ * Calculate the distance between two
+ * locations on Google Maps.
  *
  * =GOOGLEMAPS_DISTANCE("NY 10005", "Hoboken NJ", "walking")
  *

functions/GOOGLEMAPS_DURATION.gs

@@ -0,0 +1,25 @@
+// @author Amit Agarwal https://www.labnol.org/google-maps-sheets-200817
+/**
+ * Calculate the travel time between two locations
+ * on Google Maps.
+ *
+ * =GOOGLEMAPS_DURATION("NY 10005", "Hoboken NJ", "walking")
+ *
+ * @param {String} origin The address of starting point
+ * @param {String} destination The address of destination
+ * @param {String} mode The mode of travel (driving, walking, bicycling or transit)
+ * @return {String} The time in minutes
+ * @customFunction
+ */
+const GOOGLEMAPS_DURATION = (origin, destination, mode = 'driving') => {
+  const { routes: [data] = [] } = Maps.newDirectionFinder()
+    .setOrigin(origin)
+    .setDestination(destination)
+    .setMode(mode)
+    .getDirections();
+  if (!data) {
+    throw new Error('No route found!');
+  }
+  const { legs: [{ duration: { text: time } } = {}] = [] } = data;
+  return time;
+};

functions/GOOGLEMAPS_LATLONG.gs

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+// @author Amit Agarwal https://www.labnol.org/google-maps-sheets-200817
+/**
+ * Get the latitude and longitude of any
+ * address on Google Maps.
+ *
+ * =GOOGLEMAPS_LATLONG("10 Hanover Square, NY")
+ *
+ * @param {String} address The address to lookup.
+ * @return {String} The latitude and longitude of the address.
+ * @customFunction
+ */
+const GOOGLEMAPS_LATLONG = (address) => {
+  const { results: [data = null] = [] } = Maps.newGeocoder().geocode(address);
+  if (data === null) {
+    throw new Error('Address not found!');
+  }
+  const { geometry: { location: { lat, lng } } = {} } = data;
+  return `${lat}, ${lng}`;
+};

functions/GOOGLEMAPS_REVERSEGEOCODE.gs

@@ -0,0 +1,16 @@
+// @author Amit Agarwal https://www.labnol.org/google-maps-sheets-200817
+/**
+ * Use Reverse Geocoding to get the address of
+ * a point location (latitude, longitude) on Google Maps.
+ *
+ * =GOOGLEMAPS_REVERSEGEOCODE(latitude, longitude)
+ *
+ * @param {String} latitude The latitude to lookup.
+ * @param {String} longitude The longitude to lookup.
+ * @return {String} The postal address of the point.
+ * @customFunction
+ */
+const GOOGLEMAPS_REVERSEGEOCODE = (latitude, longitude) => {
+  const { results: [data = {}] = [] } = Maps.newGeocoder().reverseGeocode(latitude, longitude);
+  return data.formatted_address;
+};