Sending Cross-Chain Messages

cargo add debridge-solana-sdk

use anchor_lang::prelude::*;

declare_id!("3botMWU4s1Lcs4Q2wQBkZqsCW1vc3N9H9tY9SZYVs5vZ");

#[program]
pub mod send_via_debridge {
    use debridge_solana_sdk::prelude::*;

    use super::*;

    pub fn send_via_debridge(ctx: Context<SendViaDebridge>) -> Result<()> {
        invoke_debridge_send(
            // Debridge Instruction Data
            SendIx {
                // Chain id to which the tokens are sent
                target_chain_id: chain_ids::POLYGON_CHAIN_ID,
                /// Address in `target_chain_id` that will receive the transferred tokens
                receiver: hex::decode("bd1e72155Ce24E57D0A026e0F7420D6559A7e651").unwrap(),
                // Use of fee in transfer token (not currently enabled)
                is_use_asset_fee: false,
                // Amount of sending tokens. From this amount fee will be taken
                amount: 1000,
                // Additional data for tokens sending with auto external execution
                submission_params: None,
                // Referral code to track your transfers
                referral_code: None,
            },
            // List of accounts used by debridge-program, generated on the client
            ctx.remaining_accounts,
        )
        .map_err(|err| err.into())
    }
}

#[derive(Accounts)]
pub struct SendViaDebridge {}

import { DeBridgeSolanaClient } from "@debridge-finance/solana-contracts-client";
import { AnchorProvider, Program, Wallet as AnchorWallet } from "@coral-xyz/anchor";
import { Connection, clusterApiUrl } from "@solana/web3.js";
import { crypto, helpers, WRAPPED_SOL_MINT } from "@debridge-finance/solana-utils";

const connection = new Connection(clusterApiUrl("mainnet-beta"));
const example = new Program(
    ExampleIDL,
    "3botMWU4s1Lcs4Q2wQBkZqsCW1vc3N9H9tY9SZYVs5vZ",
    new AnchorProvider(connection, {} as unknown as AnchorWallet, {}),
  );
const deBridge = new DeBridgeSolanaClient(connection, undefined, {
    programId: "DEbrdGj3HsRsAzx6uH4MKyREKxVAfBydijLUF3ygsFfh",
    settingsProgramId: "DeSetTwWhjZq6Pz9Kfdo1KoS5NqtsM6G8ERbX4SSCSft",
  });

const chainTo = 137;
const receiver = "0xbd1e72155Ce24E57D0A026e0F7420D6559A7e651";
const amount = 1000;
const tokenMint = WRAPPED_SOL_MINT;

const builder = example.methods.sendViaDebridge(
    amount,
    Array.from(crypto.normalizeChainId(chainTo)),
    helpers.hexToBuffer(receiver),
    false,
  );

const context = await deBridge.buildSendContext(
    sender,
    null,
    tokenMint,
    receiver,
    chainTo,
    false,
    receiver,
  );
builder.remainingAccounts([...context.asAccountMeta, { isWritable: false, isSigner: false, pubkey: deBridge.program.programId }]);
const tx = await builder.transaction();