From 9afbadc1fae11e4135b3ca6697a0323f3efc279d Mon Sep 17 00:00:00 2001
From: Onno Visser <visser.onno@gmail.com>
Date: Tue, 12 Sep 2023 18:52:54 +0200
Subject: [PATCH] CentrifugeJS: Loan present value (#1578)

---
 centrifuge-js/src/modules/pools.ts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/centrifuge-js/src/modules/pools.ts b/centrifuge-js/src/modules/pools.ts
index cfbdc305dc..28f72adcb9 100644
--- a/centrifuge-js/src/modules/pools.ts
+++ b/centrifuge-js/src/modules/pools.ts
@@ -2355,6 +2355,7 @@ export function getPoolsModule(inst: Centrifuge) {
           api.query.interestAccrual.rates(),
           api.query.interestAccrual.lastUpdated(),
           api.query.ormlAssetRegistry.metadata((poolValue.toPrimitive() as any).currency),
+          api.call.loansApi.portfolio(poolId), // TODO: remove loans.activeLoans and use values from this runtime call
         ]).pipe(take(1))
       }),
       map(
@@ -2366,6 +2367,7 @@ export function getPoolsModule(inst: Centrifuge) {
           rateValues,
           interestLastUpdated,
           rawCurrency,
+          rawPortfolio,
         ]) => {
           const currency = rawCurrency.toPrimitive() as AssetCurrencyData
           const rates = rateValues.toPrimitive() as InterestAccrual[]
@@ -2385,6 +2387,20 @@ export function getPoolsModule(inst: Centrifuge) {
             }
           })
 
+          const activeLoansPortfolio: Record<
+            string,
+            {
+              presentValue: CurrencyBalance
+            }
+          > = {}
+
+          ;(rawPortfolio as any).forEach(([key, value]: [Codec, Codec]) => {
+            const data = value.toPrimitive() as any
+            activeLoansPortfolio[String(key.toPrimitive())] = {
+              presentValue: new CurrencyBalance(data.presentValue, currency.decimals),
+            }
+          })
+
           function getSharedLoanInfo(loan: CreatedLoanData | ActiveLoanData | ClosedLoanData) {
             const info = 'info' in loan ? loan.info : loan
             const [collectionId, nftId] = info.collateral
@@ -2484,6 +2500,7 @@ export function getPoolsModule(inst: Centrifuge) {
                   new Rate(rate.interestRatePerSec).toApr().toDecimalPlaces(4).toString() ===
                   sharedInfo.pricing.interestRate.toDecimal().toString()
               )
+              const portfolio = activeLoansPortfolio[loanId.toString()]
               const penaltyRate =
                 'external' in loan.pricing
                   ? loan.pricing.external.interest.penalty
@@ -2556,6 +2573,7 @@ export function getPoolsModule(inst: Centrifuge) {
                 normalizedDebt: new CurrencyBalance(normalizedDebt, currency.decimals),
                 outstandingPrincipal,
                 outstandingInterest,
+                presentValue: portfolio.presentValue,
               }
             }
           )