rpc: implement client-side getunspents

pkg/rpc/doc.go

@@ -41,6 +41,7 @@ Supported methods
 
 	getblock
 	getaccountstate
+	getunspents
 	invokescript
 	invokefunction
 	sendrawtransaction

pkg/rpc/rpc.go

@@ -39,6 +39,18 @@ func (c *Client) GetAccountState(address string) (*AccountStateResponse, error)
 	return resp, nil
 }
 
+// GetUnspents returns UTXOs for the given NEO account.
+func (c *Client) GetUnspents(address string) (*UnspentResponse, error) {
+	var (
+		params = newParams(address)
+		resp   = &UnspentResponse{}
+	)
+	if err := c.performRequest("getunspents", params, resp); err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
 // InvokeScript returns the result of the given script after running it true the VM.
 // NOTE: This is a test invoke and will not affect the blockchain.
 func (c *Client) InvokeScript(script string) (*InvokeScriptResponse, error) {

pkg/rpc/types.go

@@ -2,6 +2,7 @@ package rpc
 
 import (
 	"github.com/CityOfZion/neo-go/pkg/core/transaction"
+	"github.com/CityOfZion/neo-go/pkg/rpc/wrappers"
 	"github.com/CityOfZion/neo-go/pkg/vm"
 )
 
@@ -27,6 +28,13 @@ type AccountStateResponse struct {
 	Result *Account `json:"result"`
 }
 
+// UnspentResponse represents server response to the `getunspents` command.
+type UnspentResponse struct {
+	responseHeader
+	Error  *Error             `json:"error,omitempty"`
+	Result *wrappers.Unspents `json:"result,omitempty"`
+}
+
 // Account represents details about a NEO account.
 type Account struct {
 	Version    int    `json:"version"`