37 lines
897 B
Go
37 lines
897 B
Go
package lbrycrd
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import (
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"github.com/cockroachdb/errors"
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"github.com/lbryio/lbcd/btcjson"
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)
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type outputFinder struct {
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unspent []btcjson.ListUnspentResult
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lastChecked int
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}
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func newOutputFinder(unspentResults []btcjson.ListUnspentResult) *outputFinder {
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return &outputFinder{unspent: unspentResults, lastChecked: -1}
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}
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func (f *outputFinder) nextBatch(minAmount float64) ([]btcjson.ListUnspentResult, error) {
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var batch []btcjson.ListUnspentResult
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var lbcBatched float64
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for i, unspent := range f.unspent {
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if i > f.lastChecked {
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if unspent.Spendable {
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batch = append(batch, unspent)
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lbcBatched = lbcBatched + unspent.Amount
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}
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}
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if lbcBatched >= minAmount {
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f.lastChecked = i
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break
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}
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if i == len(f.unspent)-1 {
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return nil, errors.WithStack(errors.Newf("Not enough unspent outputs to spend %d on supports.", minAmount))
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}
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}
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return batch, nil
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}
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