Implement the config command

cmd/go-quai/config.go

@@ -1,12 +1,14 @@
 package main
 
 import (
+	"os"
 	"path/filepath"
 
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 
 	"github.com/dominant-strategies/go-quai/cmd/utils"
+	"github.com/dominant-strategies/go-quai/common/constants"
 	"github.com/dominant-strategies/go-quai/log"
 	"github.com/dominant-strategies/go-quai/params"
 )
@@ -46,6 +48,31 @@ func configCmdPreRun(cmd *cobra.Command, args []string) error {
 }
 
 func runConfig(cmd *cobra.Command, args []string) error {
-	log.Global.Info("Creating default config file")
+	// set config path to read config file
+	configDir := cmd.Flag(utils.ConfigDirFlag.Name).Value.String()
+
+	// Make sure configDir is a valid directory using path/filepath
+	// filepath.Clean returns the shortest path name equivalent to path by purely lexical processing
+	configDir = filepath.Clean(configDir)
+
+	_, err := os.Stat(configDir)
+	if err != nil && os.IsNotExist(err) {
+		// If the directory does not exist, create it
+		if err := os.MkdirAll(configDir, 0755); err != nil {
+			log.Global.Fatalf("Failed to create config directory: %s, Error: %v", configDir, err)
+		}
+		log.Global.Debugf("Config directory created: %s", configDir)
+	} else if err != nil {
+		log.Global.Fatalf("Error accessing config directory: %s, Error: %v", configDir, err)
+	}
+	if _, err := os.Stat(filepath.Join(configDir, constants.CONFIG_FILE_NAME)); os.IsNotExist(err) {
+		err := utils.WriteDefaultConfigFile(configDir, constants.CONFIG_FILE_NAME, constants.CONFIG_FILE_TYPE)
+		if err != nil {
+			return err
+		}
+		log.Global.WithField("path", filepath.Join(configDir, constants.CONFIG_FILE_NAME)).Info("Initialized new config file.")
+	} else {
+		log.Global.WithField("path", filepath.Join(configDir, constants.CONFIG_FILE_NAME)).Fatal("Cannot init config file. File already exists. Either remove this option to run with the existing config file, or delete the existing config file to re-initialize a new one.")
+	}
 	return nil
 }