fix: fix nil pointer execution if no proper packagemanager selected

cmd/install_cmd.go

@@ -28,7 +28,7 @@ var installCmd = &cobra.Command{
 			if err := osManager.Install([]string{packageName}); err != nil {
 				log.Printf("error: %v\n", err)
 			}
-		case "homebrew":
+		case "homebrew", "brew":
 			manager = &pm.HomebrewManager{}
 		case "cargo":
 			manager = &pm.CargoManager{}
@@ -38,6 +38,7 @@ var installCmd = &cobra.Command{
 			manager = &pm.FlatpakManager{}
 		default:
 			fmt.Println("No PackageManager found")
+			return
 		}
 		if err := manager.InstallPackage(packageName); err != nil {
 			log.Printf("error: %v\n", err)

cmd/remove_cmd.go

@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	"fmt"
 	"log"
 	"system_setup_tool/utils"
 
@@ -27,7 +28,7 @@ var removeCmd = &cobra.Command{
 			if err := osManager.Install([]string{packageName}); err != nil {
 				log.Printf("error: %v\n", err)
 			}
-		case "homebrew":
+		case "homebrew", "brew":
 			manager = &pm.HomebrewManager{}
 		case "cargo":
 			manager = &pm.CargoManager{}
@@ -36,6 +37,8 @@ var removeCmd = &cobra.Command{
 		case "flatpak":
 			manager = &pm.FlatpakManager{}
 		default:
+			fmt.Println("No PackageManager found")
+			return
 		}
 		if err := manager.RemovePackage(packageName); err != nil {
 			log.Printf("error: %v\n", err)

cmd/search_cmd.go

@@ -27,6 +27,9 @@ var searchCmd = &cobra.Command{
 		}
 
 		if managerName != "" {
+			if managerName == "brew" {
+				managerName = "homebrew"
+			}
 			for _, m := range managers {
 				if strings.EqualFold(m.Name(), managerName) {
 					searchAndDisplayResults(m, packageName)