feat: füge Unterstützung für das Hinzufügen und Löschen von Servern hinzu, aktualisiere die Konfiguration und verbessere die Benutzeroberfläche

main.go

@@ -1,16 +1,17 @@
 package main
 
 import (
-	"encoding/json"
 	"fmt"
 	"os"
 
 	serveractions "manage-servers/server-actions"
 	"manage-servers/webserver"
+
+	"github.com/spf13/viper"
 )
 
 func main() {
-	servers, err := loadServers("./config/servers.json")
+	servers, err := loadConfig()
 	if err != nil {
 		fmt.Printf("Error loading servers: %v\n", err)
 		return
@@ -73,18 +74,26 @@ func printUsage() {
 	fmt.Println("  serve               - Start a web server to manage servers")
 }
 
-func loadServers(filename string) ([]serveractions.Server, error) {
-	var servers []serveractions.Server
-	
-	file, err := os.ReadFile(filename)
-	if err != nil {
-		fmt.Println("No servers configuration found, please create a servers.json file in the config folder.")
-	} else {
+func loadConfig() ([]serveractions.Server, error) {
+	viper.SetConfigName("servers")    // name of config file (without extension)
+	viper.SetConfigType("json")       // or viper.SetConfigType("YAML")
+	viper.AddConfigPath("./config")   // path to look for the config file in
+	viper.AddConfigPath(".")          // optionally look for config in the working directory
+	err := viper.ReadInConfig()       // Find and read the config file
+	if err != nil {                   // Handle errors reading the config file
+		// Check if the error is that the file doesn't exist
+		if _, ok := err.(viper.ConfigFileNotFoundError); ok {
+			// Config file not found; ignore error and return empty server list
+			return []serveractions.Server{}, nil
+		}
+		return nil, fmt.Errorf("fatal error config file: %w", err)
+	}
 
-	err = json.Unmarshal(file, &servers)
+	var servers []serveractions.Server
+	err = viper.UnmarshalKey("servers", &servers)
 	if err != nil {
-		return nil, err
-	}}
+		return nil, fmt.Errorf("unable to decode into struct, %v", err)
+	}
 
 	return servers, nil
 }
@@ -92,6 +101,6 @@ func loadServers(filename string) ([]serveractions.Server, error) {
 func listServers(servers []serveractions.Server) {
 	fmt.Println("Configured Servers:")
 	for _, s := range servers {
-		fmt.Printf("  - %s (%s) - %s\n", s.Name, s.IP, s.Mac)
+		fmt.Printf("  - %s (%s) - %s - User: %s\n", s.Name, s.IP, s.Mac, s.SSHUser)
 	}
 }