Unlock Fund

Build a transaction to unlock funds from a smart contract

The following shows a simple example of building a transaction to unlock funds from a smart contract. In this example, we use an async function .complete() instead of .completeSync(). With this completing logic, it would perform auto redeemer update with aiken's uplc.

pub async fn unlock_fund(
    script_utxo: UTxO,
    redeemer: &str,
    script: ProvidedScriptSource,
    my_address: &str,
    inputs: Vec<UTxO>,
    collateral: UTxO,
) -> Result<String, JsError> {
    let mut mesh = MeshTxBuilder::new_core();
    mesh.spending_plutus_script_v2()
        .tx_in(
            &script_utxo.input.tx_hash,
            script_utxo.input.output_index,
            script_utxo.output.amount,
            &script_utxo.output.address,
        )
        .tx_in_inline_datum_present()
        // .tx_in_datum_value(datum here) or provide datum value
        .tx_in_redeemer_value(WRedeemer {
            data: WData::JSON(redeemer.to_string()),
            ex_units: Budget { mem: 0, steps: 0 },
        })
        .tx_in_script(&script.script_cbor, Some(script.language_version))
        .change_address(my_address)
        .tx_in_collateral(
            &collateral.input.tx_hash,
            collateral.input.output_index,
            collateral.output.amount,
            &collateral.output.address,
        )
        .select_utxos_from(inputs.clone(), 5000000)
        .complete(None)
        .await?;

    Ok(mesh.tx_hex())
}