Farms

import { createSolanaRpc, address } from '@solana/kit';
import { Farms, FarmState } from '@kamino-finance/farms-sdk';
import { getScopePricesFromFarm } from '@kamino-finance/farms-sdk/dist/utils/option';
import Decimal from 'decimal.js';

const rpc = createSolanaRpc('https://api.mainnet-beta.solana.com');
const farms = new Farms(rpc);

const FARM = address('9wSacmF3KBr4HmgncxXeBhDdw4Shi2X9ETAFzWJS6pG6');
const STAKE_MINT = address('3EmfhZ3KUaYdwKZ9CwfGoKRqQqUV1MhSCVL5Ch7szX7e');

const farmState = await FarmState.fetch(rpc, FARM);
if (!farmState) console.log(`Farm not found: ${FARM}`);

const scopePrices = getScopePricesFromFarm(farmState);
const amountLamports = new Decimal(0.02).mul(
  new Decimal(10).pow(farmState.token.decimals.toNumber()),
);

// Refresh the farm so reward accounting is current, then stake.
const instructions = [
  await farms.refreshFarmIx(FARM, scopePrices),
  await farms.stakeIx(signer, FARM, amountLamports, STAKE_MINT, scopePrices),
];

console.log('Stake Instructions:', instructions);

import { createSolanaRpc, address } from '@solana/kit';
import { Farms, FarmState } from '@kamino-finance/farms-sdk';
import { getScopePricesFromFarm } from '@kamino-finance/farms-sdk/dist/utils/option';
import { WAD } from '@kamino-finance/farms-sdk/dist/utils/utils';
import Decimal from 'decimal.js';

const rpc = createSolanaRpc('https://api.mainnet-beta.solana.com');
const farms = new Farms(rpc);

const FARM = address('9wSacmF3KBr4HmgncxXeBhDdw4Shi2X9ETAFzWJS6pG6');

const farmState = await FarmState.fetch(rpc, FARM);
if (!farmState) console.log(`Farm not found: ${FARM}`);

const scopePrices = getScopePricesFromFarm(farmState);
const { key: userStateKey } =
  await farms.getUserStateKeyForUndelegatedFarm(signer.address, FARM);

// unstakeIx takes WAD-scaled shares. Refresh the farm and user, then unstake.
const amountScaled = new Decimal(0.02)
  .mul(new Decimal(10).pow(farmState.token.decimals.toNumber()))
  .mul(WAD);

const instructions = [
  await farms.refreshFarmIx(FARM, scopePrices),
  await farms.refreshUserIx(userStateKey, FARM, scopePrices),
  await farms.unstakeIx(signer, FARM, amountScaled, scopePrices),
];

console.log('Unstake Instructions:', instructions);