/// Normalize a file path to use forward slashes for cross-platform consistency
/// This ensures paths stored in the database always use `/` regardless of OS
///
/// # Examples
/// ```
/// use image_api::utils::normalize_path;
///
/// assert_eq!(normalize_path("foo\\bar\\baz.jpg"), "foo/bar/baz.jpg");
/// assert_eq!(normalize_path("foo/bar/baz.jpg"), "foo/bar/baz.jpg");
/// ```
pub fn normalize_path(path: &str) -> String {
    path.replace('\\', "/")
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_normalize_path_with_backslashes() {
        assert_eq!(normalize_path("foo\\bar\\baz.jpg"), "foo/bar/baz.jpg");
    }

    #[test]
    fn test_normalize_path_with_forward_slashes() {
        assert_eq!(normalize_path("foo/bar/baz.jpg"), "foo/bar/baz.jpg");
    }

    #[test]
    fn test_normalize_path_mixed() {
        assert_eq!(
            normalize_path("foo\\bar/baz\\qux.jpg"),
            "foo/bar/baz/qux.jpg"
        );
    }

    #[test]
    fn test_normalize_path_empty() {
        assert_eq!(normalize_path(""), "");
    }

    #[test]
    fn test_normalize_path_absolute_windows() {
        assert_eq!(
            normalize_path("C:\\Users\\Photos\\image.jpg"),
            "C:/Users/Photos/image.jpg"
        );
    }

    #[test]
    fn test_normalize_path_unc_path() {
        assert_eq!(
            normalize_path("\\\\server\\share\\folder\\file.jpg"),
            "//server/share/folder/file.jpg"
        );
    }

    #[test]
    fn test_normalize_path_single_filename() {
        assert_eq!(normalize_path("image.jpg"), "image.jpg");
    }

    #[test]
    fn test_normalize_path_trailing_slash() {
        assert_eq!(normalize_path("foo\\bar\\"), "foo/bar/");
    }

    #[test]
    fn test_normalize_path_multiple_consecutive_backslashes() {
        assert_eq!(
            normalize_path("foo\\\\bar\\\\\\baz.jpg"),
            "foo//bar///baz.jpg"
        );
    }

    #[test]
    fn test_normalize_path_deep_nesting() {
        assert_eq!(
            normalize_path("a\\b\\c\\d\\e\\f\\g\\file.jpg"),
            "a/b/c/d/e/f/g/file.jpg"
        );
    }
}