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feat: add balancer queries #394

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Mar 7, 2024
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5 changes: 5 additions & 0 deletions .changeset/quiet-snails-hunt.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"@enzymefinance/sdk": patch
---

Add balancer queries
223 changes: 214 additions & 9 deletions packages/sdk/src/Portfolio/Integrations/BalancerV2.ts
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,6 @@ import {
PublicClient,
decodeAbiParameters,
encodeAbiParameters,
parseAbi,
parseAbiParameters,
} from "viem";
import { readContract, simulateContract } from "viem/actions";
Expand Down Expand Up @@ -384,9 +383,139 @@ export async function getClaimableRewards(
}

//--------------------------------------------------------------------------------------------
// EXTERNAL READ FUNCTIONS - BALANCER VAULT
// EXTERNAL READ FUNCTIONS - BALANCER QUERIES
//--------------------------------------------------------------------------------------------

const balancerQueriesAbi = [
{
inputs: [{ internalType: "contract IVault", name: "_vault", type: "address" }],
stateMutability: "nonpayable",
type: "constructor",
},
{
inputs: [
{ internalType: "enum IVault.SwapKind", name: "kind", type: "uint8" },
{
components: [
{ internalType: "bytes32", name: "poolId", type: "bytes32" },
{ internalType: "uint256", name: "assetInIndex", type: "uint256" },
{ internalType: "uint256", name: "assetOutIndex", type: "uint256" },
{ internalType: "uint256", name: "amount", type: "uint256" },
{ internalType: "bytes", name: "userData", type: "bytes" },
],
internalType: "struct IVault.BatchSwapStep[]",
name: "swaps",
type: "tuple[]",
},
{ internalType: "contract IAsset[]", name: "assets", type: "address[]" },
{
components: [
{ internalType: "address", name: "sender", type: "address" },
{ internalType: "bool", name: "fromInternalBalance", type: "bool" },
{ internalType: "address payable", name: "recipient", type: "address" },
{ internalType: "bool", name: "toInternalBalance", type: "bool" },
],
internalType: "struct IVault.FundManagement",
name: "funds",
type: "tuple",
},
],
name: "queryBatchSwap",
outputs: [{ internalType: "int256[]", name: "assetDeltas", type: "int256[]" }],
stateMutability: "nonpayable",
type: "function",
},
{
inputs: [
{ internalType: "bytes32", name: "poolId", type: "bytes32" },
{ internalType: "address", name: "sender", type: "address" },
{ internalType: "address", name: "recipient", type: "address" },
{
components: [
{ internalType: "contract IAsset[]", name: "assets", type: "address[]" },
{ internalType: "uint256[]", name: "minAmountsOut", type: "uint256[]" },
{ internalType: "bytes", name: "userData", type: "bytes" },
{ internalType: "bool", name: "toInternalBalance", type: "bool" },
],
internalType: "struct IVault.ExitPoolRequest",
name: "request",
type: "tuple",
},
],
name: "queryExit",
outputs: [
{ internalType: "uint256", name: "bptIn", type: "uint256" },
{ internalType: "uint256[]", name: "amountsOut", type: "uint256[]" },
],
stateMutability: "nonpayable",
type: "function",
},
{
inputs: [
{ internalType: "bytes32", name: "poolId", type: "bytes32" },
{ internalType: "address", name: "sender", type: "address" },
{ internalType: "address", name: "recipient", type: "address" },
{
components: [
{ internalType: "contract IAsset[]", name: "assets", type: "address[]" },
{ internalType: "uint256[]", name: "maxAmountsIn", type: "uint256[]" },
{ internalType: "bytes", name: "userData", type: "bytes" },
{ internalType: "bool", name: "fromInternalBalance", type: "bool" },
],
internalType: "struct IVault.JoinPoolRequest",
name: "request",
type: "tuple",
},
],
name: "queryJoin",
outputs: [
{ internalType: "uint256", name: "bptOut", type: "uint256" },
{ internalType: "uint256[]", name: "amountsIn", type: "uint256[]" },
],
stateMutability: "nonpayable",
type: "function",
},
{
inputs: [
{
components: [
{ internalType: "bytes32", name: "poolId", type: "bytes32" },
{ internalType: "enum IVault.SwapKind", name: "kind", type: "uint8" },
{ internalType: "contract IAsset", name: "assetIn", type: "address" },
{ internalType: "contract IAsset", name: "assetOut", type: "address" },
{ internalType: "uint256", name: "amount", type: "uint256" },
{ internalType: "bytes", name: "userData", type: "bytes" },
],
internalType: "struct IVault.SingleSwap",
name: "singleSwap",
type: "tuple",
},
{
components: [
{ internalType: "address", name: "sender", type: "address" },
{ internalType: "bool", name: "fromInternalBalance", type: "bool" },
{ internalType: "address payable", name: "recipient", type: "address" },
{ internalType: "bool", name: "toInternalBalance", type: "bool" },
],
internalType: "struct IVault.FundManagement",
name: "funds",
type: "tuple",
},
],
name: "querySwap",
outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
stateMutability: "nonpayable",
type: "function",
},
{
inputs: [],
name: "vault",
outputs: [{ internalType: "contract IVault", name: "", type: "address" }],
stateMutability: "view",
type: "function",
},
] as const;

export interface BatchSwapStep {
poolId: Hex;
assetInIndex: bigint;
Expand All @@ -405,22 +534,98 @@ export interface BatchSwapFunds {
export async function queryBatchSwap(
client: PublicClient,
args: Viem.ContractCallParameters<{
balancerVault: Address;
balancerQueries: Address;
kind: (typeof SwapKind)[keyof typeof SwapKind];
swaps: BatchSwapStep[];
assets: Address[];
funds: BatchSwapFunds;
}>,
) {
return readContract(client, {
const { result } = await simulateContract(client, {
...Viem.extractBlockParameters(args),
abi: parseAbi([
"function queryBatchSwap(uint8 kind, (bytes32 poolId, uint256 assetInIndex, uint256 assetOutIndex, uint256 amount, bytes userData)[] memory swaps, address[] memory assets, (address sender, bool fromInternalBalance, address payable recipient, bool toInternalBalance) memory funds) external view returns (int256[] memory assetDeltas)",
]),
abi: balancerQueriesAbi,
functionName: "queryBatchSwap",
address: args.balancerVault,
args: [args.kind, args.swaps, args.assets, args.funds],
address: args.balancerQueries,
args: [
args.kind,
args.swaps.map((swap) => ({
poolId: swap.poolId,
assetInIndex: swap.assetInIndex,
assetOutIndex: swap.assetOutIndex,
amount: swap.amount,
userData: swap.userData,
})),
args.assets,
{
sender: args.funds.sender,
fromInternalBalance: args.funds.fromInternalBalance,
recipient: args.funds.recipient,
toInternalBalance: args.funds.toInternalBalance,
},
],
});

return result;
}

export async function queryExit(
client: PublicClient,
args: Viem.ContractCallParameters<{
balancerQueries: Address;
poolId: Hex;
sender: Address;
recipient: Address;
request: {
assets: Address[];
minAmountsOut: bigint[];
userData: Hex;
toInternalBalance: boolean;
};
}>,
) {
const {
result: [bptIn, amountsOut],
} = await simulateContract(client, {
address: args.balancerQueries,
abi: balancerQueriesAbi,
functionName: "queryExit",
args: [args.poolId, args.sender, args.recipient, args.request],
});

return {
bptIn,
amountsOut,
};
}

export async function queryJoin(
client: PublicClient,
args: Viem.ContractCallParameters<{
balancerQueries: Address;
poolId: Hex;
sender: Address;
recipient: Address;
request: {
assets: Address[];
maxAmountsIn: bigint[];
userData: Hex;
fromInternalBalance: boolean;
};
}>,
) {
const {
result: [bptOut, amountsIn],
} = await simulateContract(client, {
address: args.balancerQueries,
abi: balancerQueriesAbi,
functionName: "queryJoin",
args: [args.poolId, args.sender, args.recipient, args.request],
});

return {
bptOut,
amountsIn,
};
}

//--------------------------------------------------------------------------------------------
Expand Down
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