4.1.5 • Published 4 months ago

@acala-network/sdk-swap v4.1.5

Weekly downloads
169
License
Apache-2.0
Repository
github
Last release
4 months ago

@acala-network/sdk-swap

npm install @acala-network/sdk-core @acala-network/sdk-swap
import { ApiPromise, WsProvider } from '@polkadot/api';
import { options } from '@acala-network/api';
import { Token, FixedPointNumber, getPresetToken } from '@acala-network/sdk-core';
import { SwapTrade } from '@acala-network/sdk-swap';

const provider = new WsProvider('ws://localhost:9944');
const api = ApiPromise.create(options({ provider }));

const aca = getPresetToken('ACA').clone({ amount: new FixedPointNumber(100) });
const ausd = getPresetToken('AUSD');

const availableTokenPairs = SwapTrade.getAvailableToenPairs(api);
const maxTradePathLength = new FixedPointNumber(api.const.dex.tradingPathLimit.toString());
const fee = {
  numerator: new FixedPointNumber(api.const.dex.getExchangeFee[0].toString()),
  denominator: new FixedPointNumber(api.const.dex.getExchanngeFee[1].toString())
};

const swapTrade = new SwapTrade({
  input: aca,
  output: ausd,
  mode: 'EXACT_INPUT',
  availableTokenPairs,
  maxTradePathLength,
  fee,
  acceptSlippage: new FixedPointNumber(0.001)
});

const tradePairs = SwapTrade.getTradeTokenPairsByPaths();

const unsub = api.query.queryMulti(
  tradePairs.map((item) => ([api.query.dex.liquidityPool, ...item.toChainData()])),
  (result) => {
    const pools = SwapTrade.convertLiquidityPoolsToTokenPairs(result, tradePairs);
    const tradeParameters = swapTrade.getTradeParameters(pools)

    if (tradeParameters.mode === 'EXECT_INPUT') {
      api.tx.dex.swapWithExactSupply(...tradeParameters.toChainData(tradeParameters.mode)).signAndSend(...)
    } else {
      api.tx.dex.swapWithExactTarget(...tradeParameters.toChainData(tradeParameters.mode)).signAndSend(...)
    }

    unsub();
  }
);
@acala-network/sdk@acala-network/sdk-core@acala-network/types@polkadot/apirxjs
@everything-registry/sub-chunk-24@acala-network/nuts-swap-adapter@acala-network/sdk-payment@paraspell/xcm-router@zalastax/nolb-_aca
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