fix: Use Cobra's Flag Inheritance

A former refactoring to avoid global variables was wrong and broke the parser

Author: jdehaan

backup/cmd/backup.go

@@ -55,11 +55,12 @@ func listCommands(cfg internal.Config) {
 	}
 }
 
-func AddBackupCommands(rootCmd *cobra.Command, configPath string) {
+func AddBackupCommands(rootCmd *cobra.Command) {
 	var runCmd = &cobra.Command{
 		Use:   "run",
 		Short: "Execute the sync jobs",
 		Run: func(cmd *cobra.Command, args []string) {
+			configPath, _ := cmd.Flags().GetString("config")
 			cfg := internal.LoadResolvedConfig(configPath)
 			executeSyncJobs(cfg, false)
 		},
@@ -69,6 +70,7 @@ func AddBackupCommands(rootCmd *cobra.Command, configPath string) {
 		Use:   "simulate",
 		Short: "Simulate the sync jobs",
 		Run: func(cmd *cobra.Command, args []string) {
+			configPath, _ := cmd.Flags().GetString("config")
 			cfg := internal.LoadResolvedConfig(configPath)
 			executeSyncJobs(cfg, true)
 		},
@@ -78,6 +80,7 @@ func AddBackupCommands(rootCmd *cobra.Command, configPath string) {
 		Use:   "list",
 		Short: "List the commands that will be executed",
 		Run: func(cmd *cobra.Command, args []string) {
+			configPath, _ := cmd.Flags().GetString("config")
 			cfg := internal.LoadResolvedConfig(configPath)
 			listCommands(cfg)
 		},

backup/cmd/check.go

@@ -9,13 +9,14 @@ import (
 	"github.com/spf13/cobra"
 )
 
-func AddCheckCommands(rootCmd *cobra.Command, configPath string) {
+func AddCheckCommands(rootCmd *cobra.Command) {
 	var fs = afero.NewOsFs()
 
 	var checkCmd = &cobra.Command{
 		Use:   "check-coverage",
 		Short: "Check path coverage",
 		Run: func(cmd *cobra.Command, args []string) {
+			configPath, _ := cmd.Flags().GetString("config")
 			cfg := internal.LoadResolvedConfig(configPath)
 			uncoveredPaths := internal.ListUncoveredPaths(fs, cfg)
 

backup/cmd/config.go

@@ -10,7 +10,7 @@ import (
 )
 
 // AddConfigCommands binds the config command and its subcommands to the root command.
-func AddConfigCommands(rootCmd *cobra.Command, configPath string) {
+func AddConfigCommands(rootCmd *cobra.Command) {
 	// configCmd represents the config command.
 	var configCmd = &cobra.Command{
 		Use:   "config",
@@ -26,6 +26,7 @@ func AddConfigCommands(rootCmd *cobra.Command, configPath string) {
 		Use:   "show",
 		Short: "Show resolved configuration",
 		Run: func(cmd *cobra.Command, args []string) {
+			configPath, _ := cmd.Flags().GetString("config")
 			cfg := internal.LoadResolvedConfig(configPath)
 
 			out, err := yaml.Marshal(cfg)
@@ -42,6 +43,7 @@ func AddConfigCommands(rootCmd *cobra.Command, configPath string) {
 		Use:   "validate",
 		Short: "Validate configuration",
 		Run: func(cmd *cobra.Command, args []string) {
+			configPath, _ := cmd.Flags().GetString("config")
 			internal.LoadResolvedConfig(configPath)
 			fmt.Println("Configuration is valid.")
 		},

backup/cmd/root.go

@@ -9,27 +9,19 @@ import (
 
 // Execute adds all child commands to the root command and sets flags appropriately.
 func Execute() {
-	var configPath string
-
 	rootCmd := &cobra.Command{
 		Use:   "backup-tool",
 		Short: "A tool for managing backups",
 		Long:  `backup-tool is a CLI tool for managing backups and configurations.`,
 	}
 
-	rootCmd.PersistentFlags().StringVar(&configPath, "config", "config.yaml", "Path to the configuration file")
-
-	// Parse flags before adding commands to ensure configPath is available.
-	err := rootCmd.ParseFlags(os.Args[1:])
-	if err != nil {
-		os.Exit(1)
-	}
+	rootCmd.PersistentFlags().String("config", "config.yaml", "Path to the configuration file")
 
-	AddConfigCommands(rootCmd, configPath)
-	AddBackupCommands(rootCmd, configPath)
-	AddCheckCommands(rootCmd, configPath)
+	AddConfigCommands(rootCmd)
+	AddBackupCommands(rootCmd)
+	AddCheckCommands(rootCmd)
 
-	err = rootCmd.Execute()
+	err := rootCmd.Execute()
 	if err != nil {
 		os.Exit(1)
 	}