//
//  ClientSessionBinder.swift
//
//  Copyright 2026 Brendan Szymanski <hello@bscubed.dev>
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
//
//  SPDX-License-Identifier: GPL-3.0-or-later
//

import LuminateServices
import LuminateUI
import Portico

/// Keeps the live Jellyfin client in step with session preference changes.
@MainActor package final class ClientSessionBinder {
    private var tokens: [SubscriptionToken] = []

    /// Subscribes to the server URL and access token preferences.
    ///
    /// - Parameters:
    ///   - client: The client to reconfigure.
    ///   - preferences: The coordinator owning the preference slots.
    package init(client: JellyfinClient, preferences: Preferences = .shared) {
        tokens.append(
            preferences.binding(for: .serverURL).subscribe { url in
                guard let url else { return }
                Task { await client.setServerURL(url) }
            }
        )
        tokens.append(
            preferences.binding(for: .accessToken).subscribe { token in
                Task { await client.setAccessToken(token) }
            }
        )
    }
}