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#![cfg_attr(docsrs, feature(doc_auto_cfg, doc_cfg))]
#![doc = include_str!("../README.md")]
// @@ begin lint list maintained by maint/add_warning @@
#![cfg_attr(not(ci_arti_stable), allow(renamed_and_removed_lints))]
#![cfg_attr(not(ci_arti_nightly), allow(unknown_lints))]
#![deny(missing_docs)]
#![warn(noop_method_call)]
#![deny(unreachable_pub)]
#![warn(clippy::all)]
#![deny(clippy::await_holding_lock)]
#![deny(clippy::cargo_common_metadata)]
#![deny(clippy::cast_lossless)]
#![deny(clippy::checked_conversions)]
#![warn(clippy::cognitive_complexity)]
#![deny(clippy::debug_assert_with_mut_call)]
#![deny(clippy::exhaustive_enums)]
#![deny(clippy::exhaustive_structs)]
#![deny(clippy::expl_impl_clone_on_copy)]
#![deny(clippy::fallible_impl_from)]
#![deny(clippy::implicit_clone)]
#![deny(clippy::large_stack_arrays)]
#![warn(clippy::manual_ok_or)]
#![deny(clippy::missing_docs_in_private_items)]
#![warn(clippy::needless_borrow)]
#![warn(clippy::needless_pass_by_value)]
#![warn(clippy::option_option)]
#![deny(clippy::print_stderr)]
#![deny(clippy::print_stdout)]
#![warn(clippy::rc_buffer)]
#![deny(clippy::ref_option_ref)]
#![warn(clippy::semicolon_if_nothing_returned)]
#![warn(clippy::trait_duplication_in_bounds)]
#![deny(clippy::unnecessary_wraps)]
#![warn(clippy::unseparated_literal_suffix)]
#![deny(clippy::unwrap_used)]
#![allow(clippy::let_unit_value)] // This can reasonably be done for explicitness
#![allow(clippy::uninlined_format_args)]
#![allow(clippy::significant_drop_in_scrutinee)] // arti/-/merge_requests/588/#note_2812945
#![allow(clippy::result_large_err)] // temporary workaround for arti#587
#![allow(clippy::needless_raw_string_hashes)] // complained-about code is fine, often best
//! <!-- @@ end lint list maintained by maint/add_warning @@ -->

// TODO HSS: write more comprehensive documentation when the API is a bit more
// stable

pub mod config;
mod err;
mod key_specifier;

#[cfg(feature = "keymgr")]
mod key_type;
#[cfg(feature = "keymgr")]
mod keystore;
#[cfg(feature = "keymgr")]
mod mgr;

#[cfg(not(feature = "keymgr"))]
mod dummy;

pub use err::{Error, KeystoreError};
pub use key_specifier::{ArtiPath, ArtiPathComponent, CTorPath, KeySpecifier};

#[cfg(feature = "keymgr")]
#[cfg_attr(docsrs, doc(cfg(feature = "keymgr")))]
pub use {
    key_type::KeyType,
    keystore::arti::ArtiNativeKeystore,
    keystore::{EncodableKey, ErasedKey, KeygenRng, Keystore, ToEncodableKey},
    mgr::KeyMgr,
};

#[cfg(not(feature = "keymgr"))]
#[cfg_attr(docsrs, doc(cfg(not(feature = "keymgr"))))]
pub use dummy::*;

use derive_more::{AsRef, Display};
use serde::{Deserialize, Serialize};
use std::str::FromStr;

/// A Result type for this crate.
pub type Result<T> = std::result::Result<T, Error>;

/// An identifier for a particular [`Keystore`] instance.
//
// TODO HSS: maybe restrict the charset of this ID
#[derive(
    Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Serialize, Deserialize, Display, AsRef,
)]
#[serde(transparent)]
#[non_exhaustive]
pub struct KeystoreId(String);

impl FromStr for KeystoreId {
    type Err = Error;

    fn from_str(s: &str) -> Result<Self> {
        Ok(Self(s.into()))
    }
}

/// Specifies which keystores a [`KeyMgr`] operation should apply to.
#[derive(Copy, Clone, Default, Debug, PartialEq, Eq, Hash)]
#[non_exhaustive]
pub enum KeystoreSelector<'a> {
    /// Try to use the keystore with the specified ID.
    Id(&'a KeystoreId),
    /// Use the default key store.
    #[default]
    Default,
}