use core::fmt;

/// Debugging trait which is specialized for handling secret values
pub trait Strategy<T> {
    /// Format information about the secret's type.
    fn fmt(value: &T, fmt: &mut fmt::Formatter<'_>) -> fmt::Result;
}

/// Debug with type
#[cfg_attr(feature = "serde", derive(serde::Deserialize))]
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum WithType {}

impl<T> Strategy<T> for WithType {
    fn fmt(_: &T, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
        fmt.write_str("*** ")?;
        fmt.write_str(std::any::type_name::<T>())?;
        fmt.write_str(" ***")
    }
}

/// Debug without type
pub enum WithoutType {}

impl<T> Strategy<T> for WithoutType {
    fn fmt(_: &T, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
        fmt.write_str("*** ***")
    }
}