remove unused fields from balance model

backend/src/graphql/model/Balance.ts

@@ -5,33 +5,20 @@ import Decimal from 'decimal.js-light'
 export class Balance {
   constructor(data: {
     balance: Decimal
-    decay: Decimal
-    lastBookedBalance: Decimal
     balanceGDT: number | null
     count: number
     linkCount: number
-    lastBookedDate?: Date | null
   }) {
     this.balance = data.balance
-    this.decay = data.decay
-    this.lastBookedBalance = data.lastBookedBalance
     this.balanceGDT = data.balanceGDT || null
     this.count = data.count
     this.linkCount = data.linkCount
-    this.lastBookedDate = data.lastBookedDate || null
   }
 
   // the actual balance, decay included
   @Field(() => Decimal)
   balance: Decimal
 
-  // the decay since the last booked balance
-  @Field(() => Decimal)
-  decay: Decimal
-
-  @Field(() => Decimal)
-  lastBookedBalance: Decimal
-
   @Field(() => Number, { nullable: true })
   balanceGDT: number | null
 
@@ -42,8 +29,4 @@ export class Balance {
   // the count of transaction links
   @Field(() => Number)
   linkCount: number
-
-  // may be null as there may be no transaction
-  @Field(() => Date, { nullable: true })
-  lastBookedDate: Date | null
 }

backend/src/graphql/resolver/BalanceResolver.ts

@@ -29,8 +29,6 @@ export class BalanceResolver {
     if (!lastTransaction) {
       return new Balance({
         balance: new Decimal(0),
-        decay: new Decimal(0),
-        lastBookedBalance: new Decimal(0),
         balanceGDT,
         count: 0,
         linkCount: 0,
@@ -69,12 +67,9 @@ export class BalanceResolver {
       balance: calculatedDecay.balance
         .minus(sumHoldAvailableAmount.toString())
         .toDecimalPlaces(2, Decimal.ROUND_DOWN), // round towards zero
-      decay: calculatedDecay.decay.toDecimalPlaces(2, Decimal.ROUND_FLOOR), // round towards - infinity
-      lastBookedBalance: lastTransaction.balance.toDecimalPlaces(2, Decimal.ROUND_DOWN),
       balanceGDT,
       count,
       linkCount,
-      lastBookedDate: lastTransaction.balanceDate,
     })
   }
 }