use crate::comp::{
    ActionState::Attack, AttackKind::BasicAttack, EcsStateData, StateHandle, StateUpdate,
};
use crate::util::movement_utils::*;
use std::time::Duration;

#[derive(Clone, Copy, Default, Debug, PartialEq, Serialize, Deserialize, Eq, Hash)]
pub struct BasicAttackState {
    /// How long the state has until exitting
    remaining_duration: Duration,
}

impl StateHandle for BasicAttackState {
    fn handle(&self, ecs_data: &EcsStateData) -> StateUpdate {
        let mut update = StateUpdate {
            pos: *ecs_data.pos,
            vel: *ecs_data.vel,
            ori: *ecs_data.ori,
            character: *ecs_data.character,
        };

        // Check if attack duration has expired
        if self.remaining_duration == Duration::default() {
            // If so, go back to wielding or idling
            update.character.action_state = attempt_wield(ecs_data.stats);
            return update;
        }

        // Otherwise, tick down remaining_duration, and keep rolling
        update.character.action_state = Attack(BasicAttack(BasicAttackState {
            remaining_duration: self
                .remaining_duration
                .checked_sub(Duration::from_secs_f32(ecs_data.dt.0))
                .unwrap_or_default(),
        }));

        return update;
    }
}