@saberhq/stableswap-sdk/dist/esm/state/index.js

Solana SDK for Saber's StableSwap program.

import { u64 } from "@saberhq/token-utils";
import { PublicKey } from "@solana/web3.js";
import { decodeFees } from "./fees.js";
import { StableSwapLayout } from "./layout.js";
export * from "./fees.js";
export * from "./layout.js";
/**
 * Decodes the Swap account.
 * @param data
 * @returns
 */
export const decodeSwap = (data) => {
    const stableSwapData = StableSwapLayout.decode(data);
    if (!stableSwapData.isInitialized) {
        throw new Error(`Invalid token swap state`);
    }
    const adminAccount = new PublicKey(stableSwapData.adminAccount);
    const adminFeeAccountA = new PublicKey(stableSwapData.adminFeeAccountA);
    const adminFeeAccountB = new PublicKey(stableSwapData.adminFeeAccountB);
    const tokenAccountA = new PublicKey(stableSwapData.tokenAccountA);
    const tokenAccountB = new PublicKey(stableSwapData.tokenAccountB);
    const poolTokenMint = new PublicKey(stableSwapData.tokenPool);
    const mintA = new PublicKey(stableSwapData.mintA);
    const mintB = new PublicKey(stableSwapData.mintB);
    const initialAmpFactor = u64.fromBuffer(Buffer.from(stableSwapData.initialAmpFactor));
    const targetAmpFactor = u64.fromBuffer(Buffer.from(stableSwapData.targetAmpFactor));
    const startRampTimestamp = stableSwapData.startRampTs;
    const stopRampTimestamp = stableSwapData.stopRampTs;
    const fees = decodeFees(stableSwapData.fees);
    return {
        isInitialized: !!stableSwapData.isInitialized,
        isPaused: !!stableSwapData.isPaused,
        nonce: stableSwapData.nonce,
        futureAdminDeadline: stableSwapData.futureAdminDeadline,
        futureAdminAccount: new PublicKey(stableSwapData.futureAdminAccount),
        adminAccount,
        tokenA: {
            adminFeeAccount: adminFeeAccountA,
            reserve: tokenAccountA,
            mint: mintA,
        },
        tokenB: {
            adminFeeAccount: adminFeeAccountB,
            reserve: tokenAccountB,
            mint: mintB,
        },
        poolTokenMint,
        initialAmpFactor,
        targetAmpFactor,
        startRampTimestamp,
        stopRampTimestamp,
        fees,
    };
};
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