use {
    crate::{
        object::Version,
        utils::clonecell::CloneCell,
        wire::{zwlr_layer_surface_v1::*, ZwlrLayerSurfaceV1Id},
        wl_usr::{usr_object::UsrObject, UsrCon},
    },
    std::{convert::Infallible, rc::Rc},
};

pub struct UsrWlrLayerSurface {
    pub id: ZwlrLayerSurfaceV1Id,
    pub con: Rc<UsrCon>,
    pub owner: CloneCell<Option<Rc<dyn UsrWlrLayerSurfaceOwner>>>,
    pub version: Version,
}

pub trait UsrWlrLayerSurfaceOwner {
    fn configure(&self, ev: &Configure) {
        let _ = ev;
    }

    fn closed(&self) {}
}

impl UsrWlrLayerSurface {
    pub fn set_size(&self, width: i32, height: i32) {
        self.con.request(SetSize {
            self_id: self.id,
            width: width as _,
            height: height as _,
        });
    }

    #[allow(dead_code)]
    pub fn set_keyboard_interactivity(&self, ki: u32) {
        self.con.request(SetKeyboardInteractivity {
            self_id: self.id,
            keyboard_interactivity: ki,
        });
    }

    #[allow(dead_code)]
    pub fn set_layer(&self, layer: u32) {
        self.con.request(SetLayer {
            self_id: self.id,
            layer,
        });
    }
}

impl ZwlrLayerSurfaceV1EventHandler for UsrWlrLayerSurface {
    type Error = Infallible;

    fn configure(&self, ev: Configure, _slf: &Rc<Self>) -> Result<(), Self::Error> {
        if let Some(owner) = self.owner.get() {
            owner.configure(&ev);
        }
        self.con.request(AckConfigure {
            self_id: self.id,
            serial: ev.serial,
        });
        Ok(())
    }

    fn closed(&self, _ev: Closed, _slf: &Rc<Self>) -> Result<(), Self::Error> {
        if let Some(owner) = self.owner.get() {
            owner.closed();
        }
        Ok(())
    }
}

usr_object_base! {
    self = UsrWlrLayerSurface = ZwlrLayerSurfaceV1;
    version = self.version;
}

impl UsrObject for UsrWlrLayerSurface {
    fn destroy(&self) {
        self.con.request(Destroy { self_id: self.id });
    }

    fn break_loops(&self) {
        self.owner.take();
    }
}