use godot::{
    classes::{AnimationTree, Skeleton3D},
    prelude::*,
};

use crate::weapon::{BallWeapon, Raygun, Weapon};

#[derive(GodotClass)]
#[class(base=Node3D, init)]
pub struct SoldierMesh {
    #[export]
    hand_attachment: Option<Gd<Node3D>>,
    #[export]
    animation_tree: Option<Gd<AnimationTree>>,
    #[export]
    skeleton: Option<Gd<Skeleton3D>>,
    #[export]
    raygun: Option<Gd<PackedScene>>,
    #[export]
    ball: Option<Gd<PackedScene>>,
    #[export]
    look_at: Option<Gd<Node3D>>,

    pub current_weapon: Option<DynGd<Node3D, dyn Weapon>>,

    base: Base<Node3D>,
}

#[godot_api]
impl INode3D for SoldierMesh {
    fn ready(&mut self) {}
}

impl SoldierMesh {
    pub fn update_movement(&mut self, movement: Vector2) {
        if let Some(tree) = &mut self.animation_tree {
            tree.set("parameters/Movement/blend_position", &movement.to_variant());
        }
    }

    pub fn update_y_look(&mut self, rotation: f32) {
        if let Some(node) = &mut self.look_at {
            node.set_rotation(Vector3::RIGHT * -rotation);
        }
    }

    pub fn spawn_raygun(&mut self) -> Option<DynGd<Node3D, dyn Weapon>> {
        if let Some(raygun) = &self.raygun {
            let node = raygun.instantiate_as::<Raygun>();
            self.spawn_weapon(node.into_dyn().upcast())
        } else {
            None
        }
    }

    pub fn spawn_ball(&mut self) -> Option<DynGd<Node3D, dyn Weapon>> {
        if let Some(ball) = &self.ball {
            let node = ball.instantiate_as::<BallWeapon>();
            self.spawn_weapon(node.into_dyn().upcast())
        } else {
            None
        }
    }

    fn spawn_weapon(
        &mut self,
        node: DynGd<Node3D, dyn Weapon>,
    ) -> Option<DynGd<Node3D, dyn Weapon>> {
        if let Some(mut weapon) = self.current_weapon.take() {
            weapon.queue_free();
        }
        if let Some(hand) = &mut self.hand_attachment {
            hand.add_child(&node);
            self.current_weapon = Some(node.clone());
            Some(node)
        } else {
            None
        }
    }

    pub fn get_weapon(&self) -> Option<DynGd<Node3D, dyn Weapon>> {
        self.current_weapon.clone()
    }
}