From ae1df08b6d0c9831dde69f8b6b3c5f5fcd925404 Mon Sep 17 00:00:00 2001
From: 0xripleys <0xripleys@solend.fi>
Date: Wed, 12 Jul 2023 18:28:27 -0400
Subject: [PATCH] instruction changes

---
 solend-sdk/src/instructions/forgiveDebt.ts    | 41 +++++++++++++
 solend-sdk/src/instructions/initReserve.ts    | 42 ++++++++++++-
 .../setLendingMarketOwnerAndConfig.ts         | 59 +++++++++++++++++++
 .../src/instructions/updateReserveConfig.ts   | 16 +++++
 4 files changed, 156 insertions(+), 2 deletions(-)
 create mode 100644 solend-sdk/src/instructions/forgiveDebt.ts
 create mode 100644 solend-sdk/src/instructions/setLendingMarketOwnerAndConfig.ts

diff --git a/solend-sdk/src/instructions/forgiveDebt.ts b/solend-sdk/src/instructions/forgiveDebt.ts
new file mode 100644
index 00000000..48019dd6
--- /dev/null
+++ b/solend-sdk/src/instructions/forgiveDebt.ts
@@ -0,0 +1,41 @@
+import { PublicKey, TransactionInstruction } from "@solana/web3.js";
+import * as BufferLayout from "buffer-layout";
+import { RateLimiterConfig } from "../state/rateLimiter";
+import * as Layout from "../utils/layout";
+import { LendingInstruction } from "./instruction";
+
+export const ForgiveDebtInstruction = (
+  obligation: PublicKey,
+  reserve: PublicKey,
+  lendingMarket: PublicKey,
+  lendingMarketOwner: PublicKey,
+  liquidityAmount: number,
+  lendingProgramId: PublicKey
+): TransactionInstruction => {
+  const dataLayout = BufferLayout.struct([
+    BufferLayout.u8("instruction"),
+    Layout.uint64("liquidityAmount"),
+  ]);
+
+  const data = Buffer.alloc(dataLayout.span);
+  dataLayout.encode(
+    {
+      instruction: LendingInstruction.SetLendingMarketOwnerAndConfig,
+      liquidityAmount: liquidityAmount,
+    },
+    data
+  );
+
+  const keys = [
+    { pubkey: obligation, isSigner: false, isWritable: true },
+    { pubkey: reserve, isSigner: false, isWritable: true },
+    { pubkey: lendingMarket, isSigner: false, isWritable: false },
+    { pubkey: lendingMarketOwner, isSigner: true, isWritable: false },
+  ];
+
+  return new TransactionInstruction({
+    keys,
+    programId: lendingProgramId,
+    data,
+  });
+};
diff --git a/solend-sdk/src/instructions/initReserve.ts b/solend-sdk/src/instructions/initReserve.ts
index 2e550ec5..c519ba7b 100644
--- a/solend-sdk/src/instructions/initReserve.ts
+++ b/solend-sdk/src/instructions/initReserve.ts
@@ -34,7 +34,26 @@ export const initReserveInstruction = (
   const dataLayout = BufferLayout.struct([
     BufferLayout.u8("instruction"),
     Layout.uint64("liquidityAmount"),
-    ReserveConfigLayout,
+    BufferLayout.u8("optimalUtilizationRate"),
+    BufferLayout.u8("maxUtilizationRate"),
+    BufferLayout.u8("loanToValueRatio"),
+    BufferLayout.u8("liquidationBonus"),
+    BufferLayout.u8("liquidationThreshold"),
+    BufferLayout.u8("minBorrowRate"),
+    BufferLayout.u8("optimalBorrowRate"),
+    BufferLayout.u8("maxBorrowRate"),
+    Layout.uint64("borrowFeeWad"),
+    Layout.uint64("flashLoanFeeWad"),
+    BufferLayout.u8("hostFeePercentage"),
+    Layout.uint64("depositLimit"),
+    Layout.uint64("borrowLimit"),
+    Layout.publicKey("feeReceiver"),
+    BufferLayout.u8("protocolLiquidationFee"),
+    BufferLayout.u8("protocolTakeRate"),
+    Layout.uint64("addedBorrowWeightBPS"),
+    BufferLayout.u8("reserveType"),
+    BufferLayout.u8("maxLiquidationBonus"),
+    BufferLayout.u8("maxLiquidationThreshold"),
   ]);
 
   const data = Buffer.alloc(dataLayout.span);
@@ -42,7 +61,26 @@ export const initReserveInstruction = (
     {
       instruction: LendingInstruction.InitReserve,
       liquidityAmount: new BN(liquidityAmount),
-      config,
+      optimalUtilizationRate: config.optimalUtilizationRate,
+      maxUtilizationRate: config.maxUtilizationRate,
+      loanToValueRatio: config.loanToValueRatio,
+      liquidationBonus: config.liquidationBonus,
+      liquidationThreshold: config.liquidationThreshold,
+      minBorrowRate: config.minBorrowRate,
+      optimalBorrowRate: config.optimalBorrowRate,
+      maxBorrowRate: config.maxBorrowRate,
+      borrowFeeWad: config.fees.borrowFeeWad,
+      flashLoanFeeWad: config.fees.flashLoanFeeWad,
+      hostFeePercentage: config.fees.hostFeePercentage,
+      depositLimit: config.depositLimit,
+      borrowLimit: config.borrowLimit,
+      feeReceiver: config.feeReceiver,
+      protocolLiquidationFee: config.protocolLiquidationFee,
+      protocolTakeRate: config.protocolTakeRate,
+      addedBorrowWeightBPS: config.addedBorrowWeightBPS,
+      reserveType: config.reserveType,
+      maxLiquidationBonus: config.maxLiquidationBonus,
+      maxLiquidationThreshold: config.maxLiquidationThreshold,
     },
     data
   );
diff --git a/solend-sdk/src/instructions/setLendingMarketOwnerAndConfig.ts b/solend-sdk/src/instructions/setLendingMarketOwnerAndConfig.ts
new file mode 100644
index 00000000..3154822c
--- /dev/null
+++ b/solend-sdk/src/instructions/setLendingMarketOwnerAndConfig.ts
@@ -0,0 +1,59 @@
+import { PublicKey, TransactionInstruction } from '@solana/web3.js';
+import * as BufferLayout from 'buffer-layout';
+import {RateLimiterConfig} from '../state/rateLimiter';
+import * as Layout from "../utils/layout";
+import { LendingInstruction } from './instruction';
+
+/// Sets the new owner of a lending market.
+///
+/// Accounts expected by this instruction:
+///
+///   0. `[writable]` Lending market account.
+///   1. `[signer]` Current owner.
+export const SetLendingMarketOwnerAndConfigInstruction = (
+  lendingMarket: PublicKey,
+  currentMarketOwner: PublicKey,
+  newMarketOwner: PublicKey,
+  newRateLimiterConfig: RateLimiterConfig,
+  whitelistedLiquidator: PublicKey | null,
+  riskAuthority: PublicKey,
+  lendingProgramId: PublicKey,
+): TransactionInstruction => {
+  if (whitelistedLiquidator != null) {
+    throw new Error("Whitelisted liquidator not supported yet");
+  }
+
+  const dataLayout = BufferLayout.struct([
+    BufferLayout.u8('instruction'),
+    Layout.publicKey('newOwner'),
+    Layout.uint64('windowDuration'),
+    Layout.uint64('maxOutflow'),
+    BufferLayout.u8('whitelistedLiquidator'),
+    Layout.publicKey('riskAuthority'),
+  ]);
+
+
+  const data = Buffer.alloc(dataLayout.span);
+  dataLayout.encode(
+    {
+      instruction: LendingInstruction.SetLendingMarketOwnerAndConfig,
+      newOwner: newMarketOwner,
+      windowDuration: newRateLimiterConfig.windowDuration,
+      maxOutflow: newRateLimiterConfig.maxOutflow,
+      whitelistedLiquidator: 0,
+      riskAuthority: riskAuthority,
+    },
+    data,
+  );
+
+  const keys = [
+    { pubkey: lendingMarket, isSigner: false, isWritable: true },
+    { pubkey: currentMarketOwner, isSigner: true, isWritable: false },
+  ];
+
+  return new TransactionInstruction({
+    keys,
+    programId: lendingProgramId,
+    data,
+  });
+};
diff --git a/solend-sdk/src/instructions/updateReserveConfig.ts b/solend-sdk/src/instructions/updateReserveConfig.ts
index 63e687b5..f4e40365 100644
--- a/solend-sdk/src/instructions/updateReserveConfig.ts
+++ b/solend-sdk/src/instructions/updateReserveConfig.ts
@@ -1,4 +1,5 @@
 import { PublicKey, TransactionInstruction } from "@solana/web3.js";
+import {RateLimiterConfig} from "../state/rateLimiter";
 import { ReserveConfig } from "../state/reserve";
 import * as Layout from "../utils/layout";
 import { LendingInstruction } from "./instruction";
@@ -25,11 +26,13 @@ export const updateReserveConfig = (
   pythPrice: PublicKey,
   switchboardOracle: PublicKey,
   reserveConfig: ReserveConfig,
+  rateLimiterConfig: RateLimiterConfig,
   solendProgramAddress: PublicKey
 ): TransactionInstruction => {
   const dataLayout = BufferLayout.struct([
     BufferLayout.u8("instruction"),
     BufferLayout.u8("optimalUtilizationRate"),
+    BufferLayout.u8("maxUtilizationRate"),
     BufferLayout.u8("loanToValueRatio"),
     BufferLayout.u8("liquidationBonus"),
     BufferLayout.u8("liquidationThreshold"),
@@ -44,6 +47,12 @@ export const updateReserveConfig = (
     Layout.publicKey("feeReceiver"),
     BufferLayout.u8("protocolLiquidationFee"),
     BufferLayout.u8("protocolTakeRate"),
+    Layout.uint64("addedBorrowWeightBPS"),
+    BufferLayout.u8("reserveType"),
+    BufferLayout.u8("maxLiquidationBonus"),
+    BufferLayout.u8("maxLiquidationThreshold"),
+    Layout.uint64("windowDuration"),
+    Layout.uint64("maxOutflow"),
   ]);
 
   const data = Buffer.alloc(dataLayout.span);
@@ -51,6 +60,7 @@ export const updateReserveConfig = (
     {
       instruction: LendingInstruction.UpdateReserveConfig,
       optimalUtilizationRate: reserveConfig.optimalUtilizationRate,
+      maxUtilizationRate: reserveConfig.maxUtilizationRate,
       loanToValueRatio: reserveConfig.loanToValueRatio,
       liquidationBonus: reserveConfig.liquidationBonus,
       liquidationThreshold: reserveConfig.liquidationThreshold,
@@ -65,6 +75,12 @@ export const updateReserveConfig = (
       feeReceiver: reserveConfig.feeReceiver,
       protocolLiquidationFee: reserveConfig.protocolLiquidationFee,
       protocolTakeRate: reserveConfig.protocolTakeRate,
+      addedBorrowWeightBPS: reserveConfig.addedBorrowWeightBPS,
+      reserveType: reserveConfig.reserveType,
+      maxLiquidationBonus: reserveConfig.maxLiquidationBonus,
+      maxLiquidationThreshold: reserveConfig.maxLiquidationThreshold,
+      windowDuration: rateLimiterConfig.windowDuration,
+      maxOutflow: rateLimiterConfig.maxOutflow,
     },
     data
   );