//! Error types for image registration operations.

use thiserror::Error;

/// Errors that can occur during image registration.
#[derive(Error, Debug)]
pub enum RegistrationError {
    /// I/O error during file operations.
    #[error("I/O error: {0}")]
    Io(#[from] std::io::Error),

    /// Invalid input data.
    #[error("Invalid input: {0}")]
    InvalidInput(String),

    /// Registration failed to converge.
    #[error("Registration failed: {0}")]
    ConvergenceFailed(String),

    /// Transform error.
    #[error("Transform error: {0}")]
    TransformError(String),

    /// Medical I/O error.
    #[error("Medical I/O error: {0}")]
    MedicalIo(#[from] rtx_medical_io::MedicalIoError),
}

/// Result type for registration operations.
pub type Result<T> = std::result::Result<T, RegistrationError>;