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Orca

Orca is the easiest place to trade cryptocurrency on the Solana blockchain. For a detailed description refer to the official Orca documentation and Orca Developer Portal.

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Perform a Swap

  • Create an IDex instance, providing a default account and the RPC client instance:
IDex dex = new OrcaDex(
    WalletH.Account,
    WalletH.Rpc
)
  • Fetch token data:
TokenData tokenA = await dex.GetTokenBySymbol("USDC");
TokenData tokenB = await dex.GetTokenBySymbol("ORCA");
  • Find the whirlpool:
Pool whirlpool = await dex.FindWhirlpoolAddress(tokenA.MintAddress, tokenB.MintAddress)
  • Get a swap quote for 1 USDC:
SwapQuote swapQuote = await dex.GetSwapQuoteFromWhirlpool(
    whirlpool.Address,
    DecimalUtil.ToUlong(1, tokenA.Decimals),
    tokenA.MintAddress,
    slippageTolerance: 0.1,
);

var quote = DecimalUtil.FromBigInteger(swapQuote.EstimatedAmountOut, tokenB.Decimals);
Debug.Log(quote); // Amount of espected Orca token to receive
  • Create the swap transaction:
Transaction tx = await dex.SwapWithQuote(
    whirlpool,
    swapQuote
);
  • Sign and send the swap transaction:
await WalletH.Base.SignAndSendTransaction(tx);

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Open a position and increase the liquidity of the ORCA/USDC whirlpool

An example of adding 5 ORCA and 5 USDC to the liquidity of the pool, minting a metaplex NFT representing the position 
OrcaDex dex = new OrcaDex(
    WalletH.Account,
    WalletH.Rpc
);

var orcaToken = await dex.GetTokenBySymbol("ORCA");
var usdcToken = await dex.GetTokenBySymbol("USDC");

var whirlpool = await dex.FindWhirlpoolAddress(
  usdcToken.MintAddress,
  orcaToken.MintAddress
);

Account mint = new Account();

Transaction tx = await dex.OpenPositionWithLiquidity(
    whirlpool,
    mint,
    -1792,
    1152,
    DecimalUtil.ToUlong(5, tokenA.Decimals),
    DecimalUtil.ToUlong(5, tokenB.Decimals),
    commitment: Commitment.Confirmed
);

var txSer = tx.Build(new List<Account>() {
  WalletH.Account,
  mint
});

await WalletH.Base.SignAndSendTransaction(tx);