update write method

README.md

@@ -8,6 +8,12 @@ Emercoin NVS lib written in Go
 
 -----
 
+## Install
+
+```bash
+go get github.com/sagleft/go-nvs
+```
+
 ## Usage example
 
 ```go

examples/write.go

@@ -19,6 +19,7 @@ func main() {
 	err = client.Write(gonvs.WriteEntryTask{
 		Name:  "test:0001",
 		Value: []byte("entry value"),
+		Days:  30,
 	})
 	if err != nil {
 		log.Fatalln(err)

nvs.go

@@ -1,6 +1,10 @@
 package gonvs
 
 import (
+	"encoding/json"
+	"errors"
+	"strconv"
+
 	rpcclient "github.com/bitlum/go-bitcoind-rpc/rpcclient"
 )
 
@@ -30,7 +34,28 @@ func NewClient(task CreateClientTask) (*Client, error) {
 	return &c, nil
 }
 
-func (c *Client) Write(task WriteEntryTask) error {
-	// TODO
-	return nil
+func (c *Client) Write(task WriteEntryTask) ([]byte, error) {
+	requestData := []json.RawMessage{
+		json.RawMessage(task.Name),
+		json.RawMessage(task.Value),
+		json.RawMessage(strconv.Itoa(task.Days)),
+	}
+	if task.ToAddress != "" {
+		requestData = append(requestData, json.RawMessage(task.ToAddress))
+	}
+	if task.ValueType != "" {
+		requestData = append(requestData, json.RawMessage(task.ValueType))
+	}
+
+	response, err := c.RPC.RawRequest("name_new", requestData)
+	if err != nil {
+		return nil, errors.New("failed to write entry: " + err.Error())
+	}
+
+	msg, err := response.MarshalJSON()
+	if err != nil {
+		return nil, err
+	}
+
+	return msg, nil
 }

structs.go

@@ -18,8 +18,28 @@ type CreateClientTask struct {
 	UseSSL      bool   `json:"useSSL"`
 }
 
+// ValueType - NVS value type
+type ValueType string
+
+const (
+	// ValueTypeHex - hex value
+	ValueTypeHex string = "hex"
+
+	// ValueTypeBase64 - base64 value
+	ValueTypeBase64 string = "base64"
+
+	// ValueTypePlain - plain value
+	ValueTypePlain string = ""
+)
+
 // WriteEntryTask - new blockchain NVS entry data
 type WriteEntryTask struct {
+	//required
 	Name  string `json:"name"`
 	Value []byte `json:"value"`
+	Days  int    `json:"days"`
+
+	// optional
+	ToAddress string    `json:"toAddress"`
+	ValueType ValueType `json:"type"`
 }