UNPKG

@kamino-finance/scope-sdk

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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 MintsToScopeChainsFields { oraclePrices: Address seedPk: Address seedId: BN bump: number mapping: Array<types.MintToScopeChainFields> } export interface MintsToScopeChainsJSON { oraclePrices: string seedPk: string seedId: string bump: number mapping: Array<types.MintToScopeChainJSON> } /** Map of mints to scope chain only valid for a given price feed */ export class MintsToScopeChains { readonly oraclePrices: Address readonly seedPk: Address readonly seedId: BN readonly bump: number readonly mapping: Array<types.MintToScopeChain> static readonly discriminator = Buffer.from([ 156, 236, 56, 20, 39, 141, 42, 183, ]) static readonly layout = borsh.struct<MintsToScopeChains>([ borshAddress("oraclePrices"), borshAddress("seedPk"), borsh.u64("seedId"), borsh.u8("bump"), borsh.vec(types.MintToScopeChain.layout(), "mapping"), ]) constructor(fields: MintsToScopeChainsFields) { this.oraclePrices = fields.oraclePrices this.seedPk = fields.seedPk this.seedId = fields.seedId this.bump = fields.bump this.mapping = fields.mapping.map( (item) => new types.MintToScopeChain({ ...item }) ) } static async fetch( rpc: Rpc<GetAccountInfoApi>, address: Address, programId: Address = PROGRAM_ID ): Promise<MintsToScopeChains | 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<MintsToScopeChains | 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): MintsToScopeChains { if (!data.slice(0, 8).equals(MintsToScopeChains.discriminator)) { throw new Error("invalid account discriminator") } const dec = MintsToScopeChains.layout.decode(data.slice(8)) return new MintsToScopeChains({ oraclePrices: dec.oraclePrices, seedPk: dec.seedPk, seedId: dec.seedId, bump: dec.bump, mapping: dec.mapping.map( ( item: any /* eslint-disable-line @typescript-eslint/no-explicit-any */ ) => types.MintToScopeChain.fromDecoded(item) ), }) } toJSON(): MintsToScopeChainsJSON { return { oraclePrices: this.oraclePrices, seedPk: this.seedPk, seedId: this.seedId.toString(), bump: this.bump, mapping: this.mapping.map((item) => item.toJSON()), } } static fromJSON(obj: MintsToScopeChainsJSON): MintsToScopeChains { return new MintsToScopeChains({ oraclePrices: address(obj.oraclePrices), seedPk: address(obj.seedPk), seedId: new BN(obj.seedId), bump: obj.bump, mapping: obj.mapping.map((item) => types.MintToScopeChain.fromJSON(item)), }) } }