@kamino-finance/farms-sdk
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text/typescript
/* eslint-disable @typescript-eslint/no-unused-vars */
import {
Address,
isSome,
IAccountMeta,
IAccountSignerMeta,
IInstruction,
Option,
TransactionSigner,
} from "@solana/kit"
/* eslint-enable @typescript-eslint/no-unused-vars */
import BN from "bn.js" // eslint-disable-line @typescript-eslint/no-unused-vars
import * as borsh from "@coral-xyz/borsh" // eslint-disable-line @typescript-eslint/no-unused-vars
import { borshAddress } from "../utils" // eslint-disable-line @typescript-eslint/no-unused-vars
import * as types from "../types" // eslint-disable-line @typescript-eslint/no-unused-vars
import { PROGRAM_ID } from "../programId"
export interface WithdrawRewardArgs {
amount: BN
rewardIndex: BN
}
export interface WithdrawRewardAccounts {
farmAdmin: TransactionSigner
farmState: Address
rewardMint: Address
rewardVault: Address
farmVaultsAuthority: Address
adminRewardTokenAta: Address
scopePrices: Option<Address>
tokenProgram: Address
}
export const layout = borsh.struct<WithdrawRewardArgs>([
borsh.u64("amount"),
borsh.u64("rewardIndex"),
])
export function withdrawReward(
args: WithdrawRewardArgs,
accounts: WithdrawRewardAccounts,
remainingAccounts: Array<IAccountMeta | IAccountSignerMeta> = [],
programAddress: Address = PROGRAM_ID
) {
const keys: Array<IAccountMeta | IAccountSignerMeta> = [
{
address: accounts.farmAdmin.address,
role: 3,
signer: accounts.farmAdmin,
},
{ address: accounts.farmState, role: 1 },
{ address: accounts.rewardMint, role: 0 },
{ address: accounts.rewardVault, role: 1 },
{ address: accounts.farmVaultsAuthority, role: 0 },
{ address: accounts.adminRewardTokenAta, role: 1 },
isSome(accounts.scopePrices)
? { address: accounts.scopePrices.value, role: 0 }
: { address: programAddress, role: 0 },
{ address: accounts.tokenProgram, role: 0 },
...remainingAccounts,
]
const identifier = Buffer.from([191, 187, 176, 137, 9, 25, 187, 244])
const buffer = Buffer.alloc(1000)
const len = layout.encode(
{
amount: args.amount,
rewardIndex: args.rewardIndex,
},
buffer
)
const data = Buffer.concat([identifier, buffer]).slice(0, 8 + len)
const ix: IInstruction = { accounts: keys, programAddress, data }
return ix
}