Merge branch 'virtual-link-transaction' into transaction-link-list-query

backend/src/graphql/enum/TransactionTypeId.ts

@@ -6,6 +6,7 @@ export enum TransactionTypeId {
   RECEIVE = 3,
   // This is a virtual property, never occurring on the database
   DECAY = 4,
+  TRANSACTION_LINK,
 }
 
 registerEnumType(TransactionTypeId, {

backend/src/graphql/resolver/TransactionResolver.ts

@@ -30,7 +30,7 @@ import { calculateBalance, isHexPublicKey } from '@/util/validate'
 import { RIGHTS } from '@/auth/RIGHTS'
 import { User } from '@model/User'
 import { communityUser } from '@/util/communityUser'
-import { virtualDecayTransaction } from '@/util/virtualDecayTransaction'
+import { virtualLinkTransaction, virtualDecayTransaction } from '@/util/virtualTransactions'
 import Decimal from 'decimal.js-light'
 import { calculateDecay } from '@/util/decay'
 
@@ -112,11 +112,29 @@ export class TransactionResolver {
     const self = new User(user)
     const transactions: Transaction[] = []
 
+    const transactionLinkRepository = getCustomRepository(TransactionLinkRepository)
+    const { sumHoldAvailableAmount, sumAmount, lastDate, firstDate } =
+      await transactionLinkRepository.summary(user.id, now)
+
     // decay transaction
     if (!onlyCreations && currentPage === 1 && order === Order.DESC) {
       transactions.push(
         virtualDecayTransaction(lastTransaction.balance, lastTransaction.balanceDate, now, self),
       )
+      // virtual transaction for pending transaction-links sum
+      if (sumHoldAvailableAmount.greaterThan(0)) {
+        transactions.push(
+          virtualLinkTransaction(
+            lastTransaction.balance.minus(sumHoldAvailableAmount.toString()),
+            sumAmount,
+            sumHoldAvailableAmount,
+            sumHoldAvailableAmount.minus(sumAmount.toString()),
+            firstDate || now,
+            lastDate || now,
+            self,
+          ),
+        )
+      }
     }
 
     // transactions
@@ -128,13 +146,10 @@ export class TransactionResolver {
       transactions.push(new Transaction(userTransaction, self, linkedUser))
     })
 
-    const transactionLinkRepository = getCustomRepository(TransactionLinkRepository)
-    const toHoldAvailable = await transactionLinkRepository.sumAmountToHoldAvailable(user.id, now)
-
     // Construct Result
     return new TransactionList(
       calculateDecay(lastTransaction.balance, lastTransaction.balanceDate, now).balance.minus(
-        toHoldAvailable.toString(),
+        sumHoldAvailableAmount.toString(),
       ),
       transactions,
       userTransactionsCount,

backend/src/typeorm/repository/TransactionLink.ts

@@ -4,13 +4,33 @@ import Decimal from 'decimal.js-light'
 
 @EntityRepository(dbTransactionLink)
 export class TransactionLinkRepository extends Repository<dbTransactionLink> {
-  async sumAmountToHoldAvailable(userId: number, date: Date): Promise<Decimal> {
-    const { sum } = await this.createQueryBuilder('transactionLinks')
-      .select('SUM(transactionLinks.holdAvailableAmount)', 'sum')
+  async summary(
+    userId: number,
+    date: Date,
+  ): Promise<{
+    sumHoldAvailableAmount: Decimal
+    sumAmount: Decimal
+    lastDate: Date | null
+    firstDate: Date | null
+  }> {
+    const { sumHoldAvailableAmount, sumAmount, lastDate, firstDate } =
+      await this.createQueryBuilder('transactionLinks')
+        .select('SUM(transactionLinks.holdAvailableAmount)', 'sumHoldAvailableAmount')
+        .addSelect('SUM(transactionLinks.amount)', 'sumAmount')
+        .addSelect('MAX(transactionLinks.validUntil)', 'lastDate')
+        .addSelect('MIN(transactionLinks.createdAt)', 'firstDate')
         .where('transactionLinks.userId = :userId', { userId })
         .andWhere('transactionLinks.redeemedAt is NULL')
         .andWhere('transactionLinks.validUntil > :date', { date })
+        .orderBy('transactionLinks.createdAt', 'DESC')
         .getRawOne()
-    return sum ? new Decimal(sum) : new Decimal(0)
+    return {
+      sumHoldAvailableAmount: sumHoldAvailableAmount
+        ? new Decimal(sumHoldAvailableAmount)
+        : new Decimal(0),
+      sumAmount: sumAmount ? new Decimal(sumAmount) : new Decimal(0),
+      lastDate: lastDate || null,
+      firstDate: firstDate || null,
+    }
   }
 }

backend/src/util/validate.ts

@@ -30,9 +30,9 @@ async function calculateBalance(
   // TODO why we have to use toString() here?
   const balance = decay.balance.add(amount.toString())
   const transactionLinkRepository = getCustomRepository(TransactionLinkRepository)
-  const toHoldAvailable = await transactionLinkRepository.sumAmountToHoldAvailable(userId, time)
+  const { sumHoldAvailableAmount } = await transactionLinkRepository.summary(userId, time)
 
-  if (balance.minus(toHoldAvailable.toString()).lessThan(0)) {
+  if (balance.minus(sumHoldAvailableAmount.toString()).lessThan(0)) {
     return null
   }
   return { balance, lastTransactionId: lastTransaction.id, decay }

backend/src/util/virtualDecayTransaction.ts

@@ -1,52 +0,0 @@
-/* eslint-disable @typescript-eslint/no-unused-vars */
-import Decimal from 'decimal.js-light'
-import { SaveOptions, RemoveOptions } from '@dbTools/typeorm'
-import { Transaction as dbTransaction } from '@entity/Transaction'
-import { calculateDecay } from './decay'
-import { TransactionTypeId } from '@enum/TransactionTypeId'
-import { Transaction } from '@model/Transaction'
-import { User } from '@model/User'
-
-const virtualDecayTransaction = (
-  balance: Decimal,
-  balanceDate: Date,
-  time: Date = new Date(),
-  user: User,
-): Transaction => {
-  const decay = calculateDecay(balance, balanceDate, time)
-  // const balance = decay.balance.minus(lastTransaction.balance)
-  const decayDbTransaction: dbTransaction = {
-    id: -1,
-    userId: -1,
-    previous: -1,
-    typeId: TransactionTypeId.DECAY,
-    amount: decay.decay ? decay.decay : new Decimal(0), // new Decimal(0), // this kinda is wrong, but helps with the frontend query
-    balance: decay.balance,
-    balanceDate: time,
-    decay: decay.decay ? decay.decay : new Decimal(0),
-    decayStart: decay.start,
-    memo: '',
-    creationDate: null,
-    hasId: function (): boolean {
-      throw new Error('Function not implemented.')
-    },
-    save: function (options?: SaveOptions): Promise<dbTransaction> {
-      throw new Error('Function not implemented.')
-    },
-    remove: function (options?: RemoveOptions): Promise<dbTransaction> {
-      throw new Error('Function not implemented.')
-    },
-    softRemove: function (options?: SaveOptions): Promise<dbTransaction> {
-      throw new Error('Function not implemented.')
-    },
-    recover: function (options?: SaveOptions): Promise<dbTransaction> {
-      throw new Error('Function not implemented.')
-    },
-    reload: function (): Promise<void> {
-      throw new Error('Function not implemented.')
-    },
-  }
-  return new Transaction(decayDbTransaction, user)
-}
-
-export { virtualDecayTransaction }

backend/src/util/virtualTransactions.ts

@@ -0,0 +1,82 @@
+/* eslint-disable @typescript-eslint/no-unused-vars */
+import { Transaction } from '@model/Transaction'
+import { SaveOptions, RemoveOptions } from '@dbTools/typeorm'
+import { Transaction as dbTransaction } from '@entity/Transaction'
+import { TransactionTypeId } from '@enum/TransactionTypeId'
+import { calculateDecay } from './decay'
+import { User } from '@model/User'
+import Decimal from 'decimal.js-light'
+
+const defaultModelFunctions = {
+  hasId: function (): boolean {
+    throw new Error('Function not implemented.')
+  },
+  save: function (options?: SaveOptions): Promise<dbTransaction> {
+    throw new Error('Function not implemented.')
+  },
+  remove: function (options?: RemoveOptions): Promise<dbTransaction> {
+    throw new Error('Function not implemented.')
+  },
+  softRemove: function (options?: SaveOptions): Promise<dbTransaction> {
+    throw new Error('Function not implemented.')
+  },
+  recover: function (options?: SaveOptions): Promise<dbTransaction> {
+    throw new Error('Function not implemented.')
+  },
+  reload: function (): Promise<void> {
+    throw new Error('Function not implemented.')
+  },
+}
+
+const virtualLinkTransaction = (
+  balance: Decimal,
+  amount: Decimal,
+  holdAvailableAmount: Decimal,
+  decay: Decimal,
+  createdAt: Date,
+  validUntil: Date,
+  user: User,
+): Transaction => {
+  const linkDbTransaction: dbTransaction = {
+    id: -2,
+    userId: -1,
+    previous: -1,
+    typeId: TransactionTypeId.TRANSACTION_LINK,
+    amount: amount,
+    balance: balance,
+    balanceDate: validUntil,
+    decayStart: createdAt,
+    decay: decay,
+    memo: '',
+    creationDate: null,
+    ...defaultModelFunctions,
+  }
+  return new Transaction(linkDbTransaction, user)
+}
+
+const virtualDecayTransaction = (
+  balance: Decimal,
+  balanceDate: Date,
+  time: Date = new Date(),
+  user: User,
+): Transaction => {
+  const decay = calculateDecay(balance, balanceDate, time)
+  // const balance = decay.balance.minus(lastTransaction.balance)
+  const decayDbTransaction: dbTransaction = {
+    id: -1,
+    userId: -1,
+    previous: -1,
+    typeId: TransactionTypeId.DECAY,
+    amount: decay.decay ? decay.decay : new Decimal(0), // new Decimal(0), // this kinda is wrong, but helps with the frontend query
+    balance: decay.balance,
+    balanceDate: time,
+    decay: decay.decay ? decay.decay : new Decimal(0),
+    decayStart: decay.start,
+    memo: '',
+    creationDate: null,
+    ...defaultModelFunctions,
+  }
+  return new Transaction(decayDbTransaction, user)
+}
+
+export { virtualLinkTransaction, virtualDecayTransaction }