use core::any::Any;
use core::sync::atomic::{AtomicI8, Ordering};
use pkmn_lib_interface::app_interface::list::ImmutableList;
use pkmn_lib_interface::app_interface::{
    DynamicLibrary, EffectParameter, ExecutingMove, Pokemon, Statistic,
};
use pkmn_lib_interface::handling::{Script, ScriptCapabilities};

macro_rules! change_stat_effect {
    (
        $stat:ident
    ) => {
        paste::paste! {
            pub struct [<ChangeTarget $stat>] {
                amount: AtomicI8,
            }

            impl [<ChangeTarget $stat>] {
                pub const fn get_const_name() -> &'static str {
                    stringify!([<"change_target_" $stat:snake>])
                }
            }

            impl Script for [<ChangeTarget $stat>] {
                fn new() -> Self {
                    Self {
                        amount: Default::default(),
                    }
                }

                fn get_name(&self) -> &'static str {
                    Self::get_const_name()
                }

                fn get_capabilities(&self) -> &[ScriptCapabilities] {
                    &[
                        ScriptCapabilities::Initialize,
                        ScriptCapabilities::OnSecondaryEffect,
                    ]
                }

                fn on_initialize(
                    &self,
                    _library: &DynamicLibrary,
                    parameters: Option<ImmutableList<EffectParameter>>,
                ) {
                    self.amount.store(
                        parameters.unwrap().get(0).unwrap().as_int() as i8,
                        Ordering::SeqCst,
                    );
                }

                fn on_secondary_effect(&self, mv: ExecutingMove, target: Pokemon, _hit: u8) {
                    target.change_stat_boost(
                        Statistic::$stat,
                        self.amount.load(Ordering::SeqCst),
                        mv.user() == target,
                    );
                }

                fn as_any(&self) -> &dyn Any {
                    self
                }
            }
        }
    };
}

change_stat_effect!(Attack);
change_stat_effect!(Defense);
change_stat_effect!(SpecialAttack);
change_stat_effect!(SpecialDefense);
change_stat_effect!(Speed);