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//
// ShadowsocksRelaySelector.swift
// MullvadREST
//
// Created by Mojgan on 2024-05-23.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import Foundation
import MullvadSettings
import MullvadTypes
public protocol ShadowsocksRelaySelectorProtocol: Sendable {
func selectRelay(with settings: LatestTunnelSettings) throws -> REST.BridgeRelay?
func getBridges() throws -> REST.ServerShadowsocks?
}
final public class ShadowsocksRelaySelector: ShadowsocksRelaySelectorProtocol {
let relayCache: RelayCacheProtocol
public init(
relayCache: RelayCacheProtocol
) {
self.relayCache = relayCache
}
public func selectRelay(with settings: LatestTunnelSettings) throws -> REST.BridgeRelay? {
let cachedRelays = try relayCache.read().relays
let locationConstraint =
switch settings.tunnelMultihopState {
case .on: settings.relayConstraints.entryLocations
case .off: settings.relayConstraints.exitLocations
}
return RelaySelector.Shadowsocks.closestRelay(
location: locationConstraint,
port: settings.relayConstraints.port,
filter: settings.relayConstraints.filter,
in: cachedRelays
)
}
public func getBridges() throws -> REST.ServerShadowsocks? {
let cachedRelays = try relayCache.read()
return RelaySelector.Shadowsocks.tcpBridge(from: cachedRelays.relays)
}
}
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