All files / src/transaction makeTransferTransaction.js

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import makeInputTemplate from './makeInputTemplate'
import makeTransaction from './makeTransaction'
 
 
/**
 * @public
 * Generate a `TRANSFER` transaction holding the `asset`, `metadata`, and `outputs`, that fulfills
 * the `fulfilledOutputs` of `unspentTransaction`.
 * @param {object} unspentTransaction Previous Transaction you have control over (i.e. can fulfill
 *                                    its Output Condition)
 * @param {object} metadata Metadata for the Transaction
 * @param {object[]} outputs Array of Output objects to add to the Transaction.
 *                           Think of these as the recipients of the asset after the transaction.
 *                           For `TRANSFER` Transactions, this should usually just be a list of
 *                           Outputs wrapping Ed25519 Conditions generated from the public keys of
 *                           the recipients.
 * @param {...number} OutputIndices Indices of the Outputs in `unspentTransaction` that this
 *                                     Transaction fulfills.
 *                                     Note that listed public keys listed must be used (and in
 *                                     the same order) to sign the Transaction
 *                                     (`signTransaction()`).
 * @returns {object} Unsigned transaction -- make sure to call signTransaction() on it before
 *                   sending it off!
 */
// TODO:
// - Make `metadata` optional argument
export default function makeTransferTransaction(
        unspentTransaction,
        metadata,
        outputs,
        ...outputIndices
    ) {
    const inputs = outputIndices.map((outputIndex) => {
        const fulfilledOutput = unspentTransaction.outputs[outputIndex]
        const transactionLink = {
            'output': outputIndex,
            'transaction_id': unspentTransaction.id,
        }
 
        return makeInputTemplate(fulfilledOutput.public_keys, transactionLink)
    })
 
    const assetLink = {
        'id': unspentTransaction.operation === 'CREATE' ? unspentTransaction.id
                                                        : unspentTransaction.asset.id
    }
 
    return makeTransaction('TRANSFER', assetLink, metadata, outputs, inputs)
}