fix: set config, set remote

pkg/types/types.go

@@ -0,0 +1,48 @@
+package types
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+)
+
+type Config struct {
+	DeviceID string    `json:"device_id"`
+	Remotes  []*Remote `json:"remotes"`
+}
+
+func (c *Config) ToJSON() (string, error) {
+	var b bytes.Buffer
+	err := c.JSONWriter(&b)
+	if err != nil {
+		return "", err
+	}
+
+	return b.String(), nil
+}
+
+// JSONWriter needs a writer to write the struct into json string
+func (c *Config) JSONWriter(w io.Writer) error {
+	encoder := json.NewEncoder(w)
+	encoder.SetIndent("", "  ")
+	err := encoder.Encode(&c)
+	if err != nil {
+		return fmt.Errorf("Error in encoding struct to json: %v", err)
+	}
+	return nil
+}
+
+// JSONDecoder decode a json string from a reader into a struct
+func (c *Config) JSONDecoder(r io.Reader) error {
+	jsonDecoder := json.NewDecoder(r)
+	if err := jsonDecoder.Decode(&c); err != nil {
+		return fmt.Errorf("Can not unmarshal JSON: %v", err)
+	}
+	return nil
+}
+
+type Remote struct {
+	Name    string `json:"remote_name"`
+	Address string `json:"remote_address"`
+}