added config

backend/userdata.go

@@ -0,0 +1,82 @@
+package backend
+
+import (
+	"fmt"
+	"os"
+	"os/user"
+	"runtime"
+)
+
+// user config directories vary by operating system and purpose
+// Linux/Mac: ~/.config
+// Windows: C:\Users\<username>\AppData
+func GetUserConfigDirPath() (string, error) {
+	path := ""
+	currentUser, err := user.Current()
+	if err != nil {
+		return "", fmt.Errorf("could not get current user: %w", err)
+	}
+	switch currentOS := runtime.GOOS; currentOS {
+	case "darwin":
+		fallthrough
+	case "linux":
+		path = fmt.Sprintf("/home/%s/.config/yellowjacket", currentUser.Username)
+	case "windows":
+		path = fmt.Sprintf(`C:\Users\%s\AppData\local\yellowjacket\config`, currentUser.Username)
+	default:
+		return "", fmt.Errorf("unsupported OS: %s", currentOS)
+	}
+	err = os.MkdirAll(path, os.ModePerm)
+	if err != nil {
+		return "", fmt.Errorf("could not make user config directory: %w", err)
+	}
+
+	// final check
+	dirInfo, err := os.Stat(path)
+	if err != nil {
+		return "", fmt.Errorf("could not stat the user config directory %s: %w", path, err)
+	}
+
+	if !dirInfo.IsDir() {
+		return "", fmt.Errorf("not a directory: %s", path)
+	}
+
+	return path, nil
+}
+
+// user data directories vary by operating system and purpose
+// Linux/Mac: ~/.local/share
+// Windows: C:\Users\<username>\AppData\Local
+func getUserDataDirPath() (string, error) {
+	path := ""
+	currentUser, err := user.Current()
+	if err != nil {
+		return "", fmt.Errorf("could not get current user: %w", err)
+	}
+	switch currentOS := runtime.GOOS; currentOS {
+	case "darwin":
+		fallthrough
+	case "linux":
+		path = fmt.Sprintf("/home/%s/.local/share/yellowjacket", currentUser.Username)
+	case "windows":
+		path = fmt.Sprintf(`C:\Users\%s\AppData\local\yellowjacket\config`, currentUser.Username)
+	default:
+		return "", fmt.Errorf("unsupported OS: %s", currentOS)
+	}
+	err = os.MkdirAll(path, os.ModePerm)
+	if err != nil {
+		return "", fmt.Errorf("could not make user data directory: %w", err)
+	}
+
+	// final check
+	dirInfo, err := os.Stat(path)
+	if err != nil {
+		return "", fmt.Errorf("could not stat the user data directory %s: %w", path, err)
+	}
+
+	if !dirInfo.IsDir() {
+		return "", fmt.Errorf("not a directory: %s", path)
+	}
+
+	return path, nil
+}