use thiserror::Error;
use glib::variant::Variant;
use std::fmt;

#[derive(Debug, Error)]
pub enum ParseError {
    #[error("dconf path must begin with a slash")]
    BadPath,
    #[error("dconf key must end with a slash")]
    NotDir,
    #[error("dconf dir must not end with a slash")]
    NotKey,
    #[error("{0}")]
    NulError(#[from] std::ffi::NulError)
}

#[derive(Debug, Error)]
#[error("failed to convert to type")]
pub struct FromVariantConversionError(pub Variant);

#[derive(Debug, Error)]
pub enum Error<E: 'static + std::error::Error + fmt::Display> {
    #[error("failed to parse path: {0}")]
    ParseError(E),
    #[error("{0}")]
    FromVariantConversionError(#[from] FromVariantConversionError),
    #[error("{0}")]
    GlibError(#[from] glib::error::Error),
}