read CRM wechat API from different config file

config.go

 //APIConfig contains secrets that cannot store in source file
 var APIConfig WechatAPIConfig
 
-type EspoCRMAPIConfig struct {
-
-	//where the EspoCRM is installed
-	BaseURL string `json:"BaseURL"`
-
-	//access UserName
-	UserName string `json:"UserName"`
-
-	//access Password
-	UserPass string `json:"password"`
-}
-
-//CRMConfig contains secrets that cannot store in source file
-//
-var CRMConfig EspoCRMAPIConfig
-
 func readConfig() error {
 
-	log.Printf("read config from %s\r\n", "server_config.json")
+	log.Printf("read Wechat API config from %s\r\n", "server_config.json")
 	body, err := ioutil.ReadFile("server_config.json")
 	if err != nil {
 		log.Fatal("Cannot read config from server_config.json")

configCRM.go

+package main
+
+import (
+	"encoding/json"
+	"errors"
+	"io/ioutil"
+	"log"
+)
+
+//EspoCRMAPIConfig CRM configuration for API accessing
+type EspoCRMAPIConfig struct {
+
+	//where the EspoCRM is installed
+	BaseURL string `json:"BaseURL"`
+
+	//access UserName
+	UserName string `json:"UserName"`
+
+	//access Password
+	UserPass string `json:"UserPass"`
+}
+
+//CRMConfig contains secrets that cannot store in source file
+//
+var CRMConfig EspoCRMAPIConfig
+
+func readCRMConfig() error {
+	log.Printf("read CRM config from %s\r\n", "crm_config.json")
+	body, err := ioutil.ReadFile("crm_config.json")
+	if err != nil {
+		log.Fatal("Cannot read config from crm_config.json")
+		return err
+	}
+	err = json.Unmarshal(body, &CRMConfig)
+	if CRMConfig.BaseURL == "" {
+		return errors.New("CRM BaseURL not available not available")
+	}
+
+	if CRMConfig.UserName == "" {
+		return errors.New("CRM UserName not available not available")
+	}
+
+	if CRMConfig.UserPass == "" {
+		return errors.New("CRM UserPass not available not available")
+	}
+
+	return err
+}

crm_config.json

+{
+    "BaseURL": "https://crm.hitxy.org.au/",
+    "UserName": "wechat",
+    "UserPass": "crmwechat.api"
+}

main.go

 )
 
 func main() {
-	if readConfig() != nil {
-		log.Fatal("unable to read config, program quit")
+	err := readConfig() //wechat API config
+	if err != nil {
+		log.Println(err)
+		log.Fatal("unable to read server_config.json, program quit")
 		return
 	}
 
+	err = readCRMConfig()
+	if err != nil {
+		log.Println(err)
+		log.Fatal("unable to read crm_config.json, program quit")
+	}
+
 	//fs := http.FileServer(http.Dir("/mnt/data/workspace/angular.ts/ng2-admin/dist"))
 	fs := http.FileServer(http.Dir("/mnt/data/workspace/angular.ts/wechat/ng2-admin/dist"))