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use std::{cell::RefCell, rc::Rc};

use deno_core::OpState;

/// `UnstableChecker` is a struct so it can be placed inside `GothamState`;
/// using type alias for a bool could work, but there's a high chance
/// that there might be another type alias pointing to a bool, which
/// would override previously used alias.
pub struct UnstableChecker {
    pub unstable: bool,
}

impl UnstableChecker {
    /// Quits the process if the --unstable flag was not provided.
    ///
    /// This is intentionally a non-recoverable check so that people cannot probe
    /// for unstable APIs from stable programs.
    // NOTE(bartlomieju): keep in sync with `cli/program_state.rs`
    pub fn check_unstable(&self, api_name: &str) {
        if !self.unstable {
            eprintln!(
                "Unstable API '{}'. The --unstable flag must be provided.",
                api_name
            );
            std::process::exit(70);
        }
    }
}

/// Helper for checking unstable features. Used for sync ops.
pub fn check_unstable(state: &OpState, api_name: &str) {
    state.borrow::<UnstableChecker>().check_unstable(api_name)
}

/// Helper for checking unstable features. Used for async ops.
pub fn check_unstable2(state: &Rc<RefCell<OpState>>, api_name: &str) {
    let state = state.borrow();
    state.borrow::<UnstableChecker>().check_unstable(api_name)
}

pub struct TestingFeaturesEnabled(pub bool);