add beingSpent to mempool

src/graphql/objects/unconfirmed-box.ts

@@ -14,4 +14,7 @@ export class UnconfirmedBox extends IBox {
   assetsResolver() {
     return orderBy(this.assets, (asset) => asset.index);
   }
+
+  @Field(() => Boolean)
+  beingSpent!: boolean;
 }

src/graphql/resolvers/mempool-resolver.ts

@@ -151,7 +151,7 @@ export class MempoolResolver {
     @Ctx() context: GraphQLContext,
     @Info() info: GraphQLResolveInfo
   ) {
-    return context.repository.unconfirmedBoxes.find({
+    const boxes = await context.repository.unconfirmedBoxes.find({
       resolverInfo: info,
       where: removeUndefined({ boxId, transactionId, address, ergoTree, ergoTreeTemplateHash }),
       boxIds,
@@ -161,6 +161,21 @@ export class MempoolResolver {
       skip,
       take
     });
+    const resultBoxIds = boxes.map((box) => box.boxId);
+    const isBeingSpentSelected = isFieldSelected(info, "beingSpent");
+    const unconfirmedBoxIds = isBeingSpentSelected ? 
+      await context.repository.unconfirmedInputs.getUnconfirmedInputBoxIds(resultBoxIds) : [];
+
+    if(!isBeingSpentSelected) {
+      return boxes;
+    }
+
+    return boxes.map((box) => {
+      return {
+        ...box,
+        beingSpent: unconfirmedBoxIds.indexOf(box.boxId) > -1
+      };
+    });
   }
 
   @FieldResolver()

src/graphql/schema.graphql

@@ -333,6 +333,7 @@ type UnconfirmedBox implements IBox {
   additionalRegisters: JSONObject!
   address: String!
   assets: [UnconfirmedAsset!]!
+  beingSpent: Boolean!
   boxId: String!
   creationHeight: Int!
   ergoTree: String!