use ruma::ServerName;

use super::{OutgoingKind, SendingEventType};
use crate::Result;

pub(crate) trait Data: Send + Sync {
    #[allow(clippy::type_complexity)]
    fn active_requests<'a>(
        &'a self,
    ) -> Box<
        dyn Iterator<Item = Result<(Vec<u8>, OutgoingKind, SendingEventType)>>
            + 'a,
    >;
    fn active_requests_for<'a>(
        &'a self,
        outgoing_kind: &OutgoingKind,
    ) -> Box<dyn Iterator<Item = Result<(Vec<u8>, SendingEventType)>> + 'a>;
    fn delete_active_request(&self, key: Vec<u8>) -> Result<()>;
    fn delete_all_active_requests_for(
        &self,
        outgoing_kind: &OutgoingKind,
    ) -> Result<()>;
    fn delete_all_requests_for(
        &self,
        outgoing_kind: &OutgoingKind,
    ) -> Result<()>;
    fn queue_requests(
        &self,
        requests: &[(&OutgoingKind, SendingEventType)],
    ) -> Result<Vec<Vec<u8>>>;
    fn queued_requests<'a>(
        &'a self,
        outgoing_kind: &OutgoingKind,
    ) -> Box<dyn Iterator<Item = Result<(SendingEventType, Vec<u8>)>> + 'a>;
    fn mark_as_active(
        &self,
        events: &[(SendingEventType, Vec<u8>)],
    ) -> Result<()>;
    fn set_latest_educount(
        &self,
        server_name: &ServerName,
        educount: u64,
    ) -> Result<()>;
    fn get_latest_educount(&self, server_name: &ServerName) -> Result<u64>;
}