feat: configを専用sub commandで更新できるように

internal/cmd/config.go

@@ -0,0 +1,46 @@
+package cmd
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/anoriqq/qpm/internal/config"
+	"github.com/spf13/cobra"
+)
+
+var configCmd = &cobra.Command{
+	Use:   "config",
+	Short: "update config",
+	Example: `  # set ScriptDir to ~/.qpm
+  qpm config ScriptDir ~/.qpm`,
+	RunE: configRun,
+}
+
+func init() {
+	rootCmd.AddCommand(configCmd)
+}
+
+var r = strings.NewReplacer("{", "", "}", "", ":", ": ")
+
+func configRun(_ *cobra.Command, args []string) error {
+	if len(args) < 2 {
+		return errors.New("config field and value is required")
+	}
+	if len(args) != 2 {
+		return errors.New("too many arguments")
+	}
+
+	configField, configValue := args[0], args[1]
+
+	switch strings.ToLower(configField) {
+	case "scriptdir":
+		config.SetScriptDir(configValue)
+	default:
+		return fmt.Errorf("unknown config field: %s", configField)
+	}
+
+	fmt.Println(r.Replace(fmt.Sprintf("%+v\n", config.Cfg)))
+
+	return nil
+}

internal/config/config.go

@@ -87,5 +87,10 @@ func HasScriptDir() bool {
 func SetScriptDir(scriptDir string) error {
 	viper.Set("ScriptDir", scriptDir)
 
-	return viper.WriteConfig()
+	err :=  viper.WriteConfig()
+	if err != nil {
+		return err
+	}
+
+	return viper.Unmarshal(&Cfg)
 }