@kamino-finance/klend-sdk
Version:
Typescript SDK for interacting with the Kamino Lending (klend) protocol
65 lines (59 loc) • 2.16 kB
text/typescript
/* eslint-disable @typescript-eslint/no-unused-vars */
import {
Address,
isSome,
AccountMeta,
AccountSignerMeta,
Instruction,
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 const DISCRIMINATOR = Buffer.from([106, 31, 146, 195, 103, 108, 48, 250])
export interface GetDecreasePositionArgs {
params: types.GetDecreasePositionParamsFields
}
export interface GetDecreasePositionAccounts {
perpetuals: Address
pool: Address
position: Address
custody: Address
custodyOracleAccount: Address
collateralCustody: Address
collateralCustodyOracleAccount: Address
}
export const layout = borsh.struct<GetDecreasePositionArgs>([
types.GetDecreasePositionParams.layout("params"),
])
export function getDecreasePosition(
args: GetDecreasePositionArgs,
accounts: GetDecreasePositionAccounts,
remainingAccounts: Array<AccountMeta | AccountSignerMeta> = [],
programAddress: Address = PROGRAM_ID
) {
const keys: Array<AccountMeta | AccountSignerMeta> = [
{ address: accounts.perpetuals, role: 0 },
{ address: accounts.pool, role: 0 },
{ address: accounts.position, role: 0 },
{ address: accounts.custody, role: 0 },
{ address: accounts.custodyOracleAccount, role: 0 },
{ address: accounts.collateralCustody, role: 0 },
{ address: accounts.collateralCustodyOracleAccount, role: 0 },
...remainingAccounts,
]
const buffer = Buffer.alloc(1000)
const len = layout.encode(
{
params: types.GetDecreasePositionParams.toEncodable(args.params),
},
buffer
)
const data = Buffer.concat([DISCRIMINATOR, buffer]).slice(0, 8 + len)
const ix: Instruction = { accounts: keys, programAddress, data }
return ix
}