write out json cfg file

Signed-off-by: Jeff Carr <jcarr@wit.com>

configfiles.go

@@ -1,14 +1,45 @@
 package main
 
 import (
+	"fmt"
 	"os"
 	"path/filepath"
 	"strings"
 	"time"
 
+	pb "go.wit.com/lib/protobuf/virtbuf"
 	"go.wit.com/log"
 )
 
+var cluster *pb.Cluster
+
+func readConfigFile() {
+	homeDir, _ := os.UserHomeDir()
+	fullname := filepath.Join(homeDir, ".config/virtigo.json")
+	pfile, err := os.ReadFile(fullname)
+	if err != nil {
+		log.Info("open config file :", err)
+		return
+	}
+	err = cluster.UnmarshalJSON(pfile)
+	if err != nil {
+		log.Info("create json failed", err)
+		return
+	}
+}
+
+func writeConfigFile() {
+	homeDir, _ := os.UserHomeDir()
+	fullname := filepath.Join(homeDir, ".config/virtigo.json")
+	cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
+	if err != nil {
+		log.Info("open config file :", err)
+		return
+	}
+	json := cluster.FormatJSON()
+	fmt.Fprintln(cfgfile, json)
+}
+
 func readDropletFile(filename string) {
 	// fmt.Fprintln(w, "GOT TEST?")
 	homeDir, _ := os.UserHomeDir()