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use crate::router::use_router;
use crate::target::Target;
use std::fmt::Debug;
use yew::prelude::*;

#[derive(Clone, Debug, PartialEq, Properties)]
pub struct SwitchProps<T>
where
    T: Target,
{
    /// The function rendering based on the active target.
    pub render: Callback<T, Html>,

    /// The default, in case no route is active (not found).
    #[prop_or_default]
    pub default: Html,
}

#[function_component(Switch)]
pub fn switch<T>(props: &SwitchProps<T>) -> Html
where
    T: Target + 'static,
{
    let router = use_router::<T>().expect("Must be a child of a Router or Nested component");

    match router.active_target {
        Some(target) => props.render.emit(target),
        None => props.default.clone(),
    }
}