//! Error types for FEM export operations.

use thiserror::Error;

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

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

    /// Invalid element type.
    #[error("Invalid element type: {0}")]
    InvalidElement(String),

    /// Invalid material definition.
    #[error("Invalid material: {0}")]
    InvalidMaterial(String),

    /// Parse error when reading FEM files.
    #[error("Parse error: {0}")]
    ParseError(String),

    /// Unsupported feature or format.
    #[error("Unsupported: {0}")]
    Unsupported(String),

    /// Missing required data.
    #[error("Missing data: {0}")]
    MissingData(String),
}

/// Result type for FEM export operations.
pub type Result<T> = std::result::Result<T, FemExportError>;