#![forbid(unsafe_code)]
#![warn(trivial_casts, unused_lifetimes, unused_qualifications)]

pub mod mime_db;
pub mod findings;
pub mod formats;
pub mod inspectors;
pub mod parameters;
pub mod string_type;
pub mod utils;
pub mod files;

use cfg_if::cfg_if;
use once_cell::sync::OnceCell;
use crate::findings::Findings;
use crate::mime_db::MimeDb;

cfg_if! {
	if #[cfg(any(all(unix, feature = "infer-backend"), all(not(unix), not(feature = "xdg-mime-backend"))))] {
		/// A [OnceCell] holding an instance of [mime_db::MimeDb].
		pub static MIMEDB: OnceCell<mime_db::InferDb> = OnceCell::new();
	} else {
		/// A [OnceCell] holding an instance of [mime_db::MimeDb].
		pub static MIMEDB: OnceCell<mime_db::XdgDb> = OnceCell::new();
	}
}

/// Initialises [`MIMEDB`] with a value dependent on the current backend.
pub fn init_db() {
	cfg_if! {
		if #[cfg(any(all(unix, feature = "infer-backend"), all(not(unix), not(feature = "xdg-mime-backend"))))] {
			MIMEDB
				.set(crate::mime_db::InferDb::init())
				.or(Err("Failed to initialise Infer backend!"))
				.unwrap();
		} else {
			MIMEDB
				.set(crate::mime_db::XdgDb::init())
				.or(Err("Failed to initialise XDG Mime backend!"))
				.unwrap();
		}
	}
}