another.im-ios/AnotherXMPP/XMPPStorage.swift

import Foundation

public typealias Credentials = [String: String]

public protocol XMPPStorage: AnyObject {
    // credentials
    func getCredentialsByUUID(_ uuid: UUID) async -> Credentials?

    // roster
    func deleteRoster(jid: JID) async
    // where Data is byte representation of array of roster items
    // i.e. [XMLElement] -> Data
    func getRoster(jid: JID) async -> Data?
    func setRoster(jid: JID, roster: Data) async
    func getRosterVer(jid: JID) async -> String?
    func setRosterVer(jid: JID, version: String) async

    // messages

    // omemo

    // whatever else
}