use std::sync::Arc;

use conduit::{implement, utils::stream::TryIgnore, Result};
use database::Map;
use futures::Stream;
use ruma::{api::client::room::Visibility, RoomId};

pub struct Service {
	db: Data,
}

struct Data {
	publicroomids: Arc<Map>,
}

impl crate::Service for Service {
	fn build(args: crate::Args<'_>) -> Result<Arc<Self>> {
		Ok(Arc::new(Self {
			db: Data {
				publicroomids: args.db["publicroomids"].clone(),
			},
		}))
	}

	fn name(&self) -> &str { crate::service::make_name(std::module_path!()) }
}

#[implement(Service)]
pub fn set_public(&self, room_id: &RoomId) { self.db.publicroomids.insert(room_id, []); }

#[implement(Service)]
pub fn set_not_public(&self, room_id: &RoomId) { self.db.publicroomids.remove(room_id); }

#[implement(Service)]
pub fn public_rooms(&self) -> impl Stream<Item = &RoomId> + Send { self.db.publicroomids.keys().ignore_err() }

#[implement(Service)]
pub async fn is_public_room(&self, room_id: &RoomId) -> bool { self.visibility(room_id).await == Visibility::Public }

#[implement(Service)]
pub async fn visibility(&self, room_id: &RoomId) -> Visibility {
	if self.db.publicroomids.get(room_id).await.is_ok() {
		Visibility::Public
	} else {
		Visibility::Private
	}
}