feat: allow setting data directory with env var

README.md

@@ -39,6 +39,9 @@ make build
 ## Usage
 todo
 
+It is possibly to change the data directory by setting `MC_CLI_DATA_DIR` to the directory.
+Files will be placed directly in this directory.
+
 ## Automation
 todo discuss output options, non interactive mode, etc
 

internal/pkg/platform/platform.go

@@ -16,24 +16,26 @@ import (
 // if the config directory cannot be found.
 //
 // If the directory does not exist, it will be created.
-func GetConfigDir(indev bool) (string, error) {
-	var err error
-	var configDir string
-	if indev {
-		configDir, err = os.Getwd()
-		if err != nil {
-			return "", err
-		}
+func GetConfigDir(indev bool) (dataDir string, err error) {
+
+	if configDir, ok := os.LookupEnv("MC_CLI_DATA_DIR"); ok {
+		dataDir = configDir
 	} else {
-		configDir, err = os.UserConfigDir()
-		if err != nil {
-			return "", err
+		if indev {
+			configDir, err = os.Getwd()
+			if err != nil {
+				return "", err
+			}
+		} else {
+			configDir, err = os.UserConfigDir()
+			if err != nil {
+				return "", err
+			}
 		}
+		dataDir = path.Join(configDir, "mc-cli")
 	}
 
-	dataDir := path.Join(configDir, "mc-cli")
-
-	if _, err := os.Stat(dataDir); errors.Is(err, fs.ErrNotExist) {
+	if _, err = os.Stat(dataDir); errors.Is(err, fs.ErrNotExist) {
 		err = os.MkdirAll(dataDir, 0755)
 		if err != nil {
 			return "", fmt.Errorf("unable to create data directory: %w", err)