use std::path::PathBuf;

use thiserror::Error;

#[derive(Error, Debug)]
pub enum Error {
    #[error("invalid mod id '{0}'")]
    InvalidModId(String),
    #[error("underlying HTTP error")]
    UreqError(#[from] ureq::Error),
    #[error("underlying I/O error")]
    IoError(#[from] std::io::Error),
    #[error("the website returned unexpected data")]
    InvalidScrape,
    #[error("'{0}' is not a valid mod directory")]
    InvalidModDir(PathBuf),
    #[error("ZIP error")]
    ZipError(#[from] zip::result::ZipError),
    #[error("the downloaded file was empty")]
    EmptyArchive,
    #[error("'{0}' is not a valid game directory")]
    InvalidGameDir(PathBuf),
    #[error("'{0}' is not a valid world directory")]
    InvalidWorldDir(PathBuf),
    #[error("'{0}' is not a valid modpack directory")]
    InvalidModpackDir(PathBuf),
    #[error("the world has no game ID set")]
    NoGameSet,
    #[error("'{0}' does not represent a valid mod source")]
    InvalidSourceSpec(String),
    #[error("invalid URL")]
    UrlError(#[from] url::ParseError),
    #[error("the mod ID '{0}' does not point to a single mod")]
    AmbiguousModId(String),
    #[cfg(unix)]
    #[error("underlying Unix error")]
    NixError(#[from] nix::errno::Errno),
}

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