fix: allocate the correct size for byte array to read info from existing files

go/configs/config.go

@@ -47,16 +47,31 @@ func GetConfig() (*Config, error) {
 	file, err := getConfigFile(ConfigFileName)
 	if err != nil {
 		if err == ErrConfigNotInitialized {
-			config, err := initializeConfig(file)
-			if err != nil {
-				return config, err
-			}
+			return initializeConfig(file)
 		}
+		return nil, err
 	}
 
+	defer file.Close()
+
 	return getConfig(file)
 }
 
+func (config *Config) Summarize() {
+	fmt.Printf("The project path is %s\nThe volume path is %s\n", config.ProjectPath, config.VolumePath)
+	if config.LoginCredential.Username != "" && config.LoginCredential.Password != "" {
+		fmt.Printf("Login credential [%s] is configured\n", config.LoginCredential.Username)
+	}
+
+	if len(config.RepositoryConfig) > 0 {
+		for name := range config.RepositoryConfig {
+			fmt.Printf("Repository [%s] is added\n", name)
+		}
+	} else {
+		fmt.Println("No repository is added")
+	}
+}
+
 func initializeConfig(w io.WriteCloser) (*Config, error) {
 	config := &Config{}
 	fmt.Printf("Set the project path: ")
@@ -109,13 +124,23 @@ func initializeConfig(w io.WriteCloser) (*Config, error) {
 	return config, nil
 }
 
-func getConfig(f io.Reader) (*Config, error) {
+func getConfig(f *os.File) (*Config, error) {
 	config := &Config{}
-	bytes := make([]byte, 0)
-	_, err := f.Read(bytes)
+
+	info, err := f.Stat()
 	if err != nil {
 		return nil, err
 	}
+	bytes := make([]byte, info.Size())
+	n, err := f.Read(bytes)
+	if err != nil {
+		return nil, err
+	}
+
+	if n == 0 {
+		// The file exists, but it's empty file, so we need to initalize
+		return initializeConfig(f)
+	}
 
 	err = json.Unmarshal(bytes, &config)
 	if err != nil {

go/main.go

@@ -14,6 +14,8 @@ func main() {
 		log.Fatalln(err)
 	}
 
+	config.Summarize()
+
 	// Init tasks
 
 	taskItems := []tasks.Tasker{