use std::fmt;

#[derive(Clone, Eq, PartialEq)]
pub struct SecretString(String);

impl SecretString {
    pub(crate) fn new(value: String) -> Self {
        Self(value)
    }

    /// Deliberate composition boundary. Never use in diagnostics or fingerprints.
    pub fn expose_secret(&self) -> &str {
        &self.0
    }

    pub fn is_configured(&self) -> bool {
        !self.0.is_empty()
    }
}

impl fmt::Debug for SecretString {
    fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
        formatter
            .debug_tuple("SecretString")
            .field(&if self.is_configured() {
                "configured"
            } else {
                "unconfigured"
            })
            .finish()
    }
}

impl fmt::Display for SecretString {
    fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
        formatter.write_str(if self.is_configured() {
            "configured"
        } else {
            "unconfigured"
        })
    }
}