Feat: New mutation allowing leader of the beacon to change duration. (#84)

* feat: new mutation allowing leader to change the duration of beacon.

* rfrac: ran prettier.

* used strict inequality.

* Revert "used strict inequality."

This reverts commit 6b99d9a.

Author: Aadeesh11

graphql/resolvers.js

@@ -113,6 +113,20 @@ const resolvers = {
             return newBeacon;
         },
 
+        changeBeaconDuration: async (_, { newExpiresAt, beaconID }, { user }) => {
+            const beacon = await Beacon.findById(beaconID).populate("leader");
+
+            if (!beacon) return new UserInputError("No beacon exists with that id.");
+            if (beacon.leader.id != user.id)
+                return new Error("Only the leader is allowed to change the beacon duration.");
+            if (beacon.startsAt.getTime() > newExpiresAt) return Error("Beacon can not expire before it has started.");
+
+            beacon.expiresAt = newExpiresAt;
+            await beacon.save();
+
+            return beacon;
+        },
+
         joinBeacon: async (_, { shortcode }, { user, pubsub }) => {
             const beacon = await Beacon.findOne({ shortcode });
 

graphql/schema.js

@@ -103,6 +103,7 @@ const typeDefs = gql`
         updateBeaconLocation(id: ID!, location: LocationInput!): Beacon!
         updateUserLocation(id: ID!, location: LocationInput!): User!
         changeLeader(beaconID: ID!, newLeaderID: ID!): Beacon!
+        changeBeaconDuration(newExpiresAt: Float!, beaconID: ID!): Beacon!
     }
 
     type Subscription {