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@kamino-finance/kliquidity-sdk

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Typescript SDK for interacting with the Kamino Liquidity (kliquidity) protocol

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/* eslint-disable @typescript-eslint/no-unused-vars */ import { address, Address, fetchEncodedAccount, fetchEncodedAccounts, GetAccountInfoApi, GetMultipleAccountsApi, Rpc, } 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 TickArrayFields { startTickIndex: number ticks: Array<types.TickFields> whirlpool: Address } export interface TickArrayJSON { startTickIndex: number ticks: Array<types.TickJSON> whirlpool: string } export class TickArray { readonly startTickIndex: number readonly ticks: Array<types.Tick> readonly whirlpool: Address static readonly discriminator = Buffer.from([ 69, 97, 189, 190, 110, 7, 66, 187, ]) static readonly layout = borsh.struct<TickArray>([ borsh.i32("startTickIndex"), borsh.array(types.Tick.layout(), 88, "ticks"), borshAddress("whirlpool"), ]) constructor(fields: TickArrayFields) { this.startTickIndex = fields.startTickIndex this.ticks = fields.ticks.map((item) => new types.Tick({ ...item })) this.whirlpool = fields.whirlpool } static async fetch( rpc: Rpc<GetAccountInfoApi>, address: Address, programId: Address = PROGRAM_ID ): Promise<TickArray | null> { const info = await fetchEncodedAccount(rpc, address) if (!info.exists) { return null } if (info.programAddress !== programId) { throw new Error("account doesn't belong to this program") } return this.decode(Buffer.from(info.data)) } static async fetchMultiple( rpc: Rpc<GetMultipleAccountsApi>, addresses: Address[], programId: Address = PROGRAM_ID ): Promise<Array<TickArray | null>> { const infos = await fetchEncodedAccounts(rpc, addresses) return infos.map((info) => { if (!info.exists) { return null } if (info.programAddress !== programId) { throw new Error("account doesn't belong to this program") } return this.decode(Buffer.from(info.data)) }) } static decode(data: Buffer): TickArray { if (!data.slice(0, 8).equals(TickArray.discriminator)) { throw new Error("invalid account discriminator") } const dec = TickArray.layout.decode(data.slice(8)) return new TickArray({ startTickIndex: dec.startTickIndex, ticks: dec.ticks.map( ( item: any /* eslint-disable-line @typescript-eslint/no-explicit-any */ ) => types.Tick.fromDecoded(item) ), whirlpool: dec.whirlpool, }) } toJSON(): TickArrayJSON { return { startTickIndex: this.startTickIndex, ticks: this.ticks.map((item) => item.toJSON()), whirlpool: this.whirlpool, } } static fromJSON(obj: TickArrayJSON): TickArray { return new TickArray({ startTickIndex: obj.startTickIndex, ticks: obj.ticks.map((item) => types.Tick.fromJSON(item)), whirlpool: address(obj.whirlpool), }) } }