//! Errors for the git layer. Converted to `forge_core::Error` at crate boundaries.

#[derive(Debug, thiserror::Error)]
pub enum Error {
    #[error("io error: {0}")]
    Io(#[from] std::io::Error),
    #[error("git binary unusable: {0}")]
    Unavailable(String),
    #[error("git {found} is older than required {required}")]
    TooOld { found: String, required: String },
    #[error("invalid revision or path: {0}")]
    InvalidInput(String),
    #[error("git command failed: {0}")]
    Failed(String),
    /// A compare-and-swap ref update found the ref at a different value than expected.
    #[error("ref moved since it was read: {0}")]
    RefMoved(String),
}

pub type Result<T> = std::result::Result<T, Error>;

impl From<Error> for forge_core::Error {
    fn from(e: Error) -> Self {
        forge_core::Error::Git(e.to_string())
    }
}