/// Core logic for validating the ownership of a database name.
/// This function checks if the given name matches any of the given prefixes.
/// These prefixes will in most cases be the user's unix username and any
/// unix groups the user is a member of.
pub fn validate_ownership_by_prefixes(
    name: &str,
    prefixes: &[String],
) -> Result<(), OwnerValidationError> {
    if name.is_empty() {
        return Err(OwnerValidationError::StringEmpty);
    }

    if name.starts_with('_') {
        return Err(OwnerValidationError::MissingPrefix);
    }

    let (prefix, _) = match name.split_once('_') {
        Some(pair) => pair,
        None => return Err(OwnerValidationError::MissingPostfix),
    };

    if !prefixes.iter().any(|g| g == prefix) {
        return Err(OwnerValidationError::NoMatch);
    }

    Ok(())
}