use crate::core::action::{ActionBox, ActionKey, ActionTrait, ActionsList};

use std::collections::HashMap;
use std::sync::{LazyLock, RwLock};

// Registered actions.
static ACTIONS: LazyLock<RwLock<HashMap<ActionKey, ActionsList>>> =
    LazyLock::new(|| RwLock::new(HashMap::new()));

pub fn add_action(action: ActionBox) {
    let key = action.key();
    let mut actions = ACTIONS.write().unwrap();
    if let Some(list) = actions.get_mut(&key) {
        list.add(action);
    } else {
        let mut list = ActionsList::new();
        list.add(action);
        actions.insert(key, list);
    }
}

pub fn dispatch_actions<A, B, F>(key: &ActionKey, f: F)
where
    A: ActionTrait,
    F: FnMut(&A) -> B,
{
    if let Some(list) = ACTIONS.read().unwrap().get(key) {
        list.iter_map(f);
    }
}