(Feat): Initial Commit

internal/util/fs.go

@@ -0,0 +1,39 @@
+// nolint:revive
+package util
+
+import (
+	"fmt"
+	"os"
+	"time"
+)
+
+// TouchFile creates an empty file if the file doesn’t already exist.
+// If the file already exists then TouchFile updates the modified time of the file.
+// Returns the modification time of the created / updated file.
+func TouchFile(absolutePathToFile string) (time.Time, error) {
+	_, err := os.Stat(absolutePathToFile)
+
+	if os.IsNotExist(err) {
+		file, err := os.Create(absolutePathToFile)
+		if err != nil {
+			return time.Time{}, fmt.Errorf("failed to create file: %w", err)
+		}
+
+		defer file.Close()
+
+		stat, err := file.Stat()
+		if err != nil {
+			return time.Time{}, fmt.Errorf("failed to stat file: %w", err)
+		}
+
+		return stat.ModTime(), nil
+	}
+
+	currentTime := time.Now().Local()
+	err = os.Chtimes(absolutePathToFile, currentTime, currentTime)
+	if err != nil {
+		return time.Time{}, fmt.Errorf("failed to change file time: %w", err)
+	}
+
+	return currentTime, nil
+}