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btc: filter address outputs, only return unspent #143

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merged 1 commit into from
Jun 28, 2024
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btc: filter address outputs, only return unspent #143

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21 changes: 20 additions & 1 deletion btc/explorer_api.go
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Original file line number Diff line number Diff line change
Expand Up @@ -165,7 +165,26 @@ func (a *ExplorerAPI) Unspent(addr string) ([]*Vout, error) {
}
}

return outputs, nil
// Now filter those that are really unspent, because above we get all
// outputs that are sent to the address.
var unspent []*Vout
for idx, vout := range outputs {
url := fmt.Sprintf(
"%s/tx/%s/outspend/%d", a.BaseURL, vout.Outspend.Txid,
idx,
)
outspend := Outspend{}
err := fetchJSON(url, &outspend)
if err != nil {
return nil, err
}

if !outspend.Spent {
unspent = append(unspent, vout)
}
}

return unspent, nil
}

func (a *ExplorerAPI) Address(outpoint string) (string, error) {
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