// makeListUnspent generates the cmd structure for listunspent commands.
func makeListUnspent(args []interface{}) (btcjson.Cmd, error) {
var optargs = make([]interface{}, 0, 3)
if len(args) > 0 {
optargs = append(optargs, args[0].(int))
}
if len(args) > 1 {
optargs = append(optargs, args[1].(int))
}
if len(args) > 2 {
var addrs []string
err := json.Unmarshal([]byte(args[2].(string)), &addrs)
if err != nil {
return nil, err
}
optargs = append(optargs, addrs)
}
return btcjson.NewListUnspentCmd("btcctl", optargs...)
}
func GetBtcCredInRange(min, max int64, conf *util.BitcoindConf) (*[]BtcCred, error) {
cmd, err := btcjson.NewListUnspentCmd("")
if err != nil {
return nil, fmt.Errorf("error while making cmd: %v", err.Error())
}
resp, err := util.SendBtcRpc(cmd, conf)
if err != nil {
return nil, fmt.Errorf("error while making cmd: %v", err.Error())
}
if resp.Error != nil {
return nil, fmt.Errorf("error during bitcoind JSON-RPC: %v", resp.Error)
}
addrs := make(map[string]*addressBalance)
unspent := resp.Result.([]btcjson.ListUnSpentResult)
for _, u := range unspent {
if _, ok := addrs[u.Address]; !ok {
addrs[u.Address] = &addressBalance{
Address: u.Address,
Amount: 0,
}
}
ab := addrs[u.Address]
ab.Amount += util.B2S(u.Amount)
}
addrsList := make([]addressBalance, len(addrs))
i := 0
for _, v := range addrs {
addrsList[i] = *v
i++
}
sort.Sort(byAmount(addrsList))
var use *[]BtcCred
for iter := 1; iter <= 5; iter++ {
use, err = inputsInRange(&addrsList, min, max, iter, len(addrsList)-1)
if use != nil {
break
}
}
if err != nil {
return nil, err
}
return use, nil
}