//
//  ViewUpdateScheduler.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 Adwaita
import Foundation
import LuminateCore
import Synchronization

public class ViewUpdateScheduler: ViewUpdateScheduling {
    private let isPending = Mutex<Bool>(false)

    public init() {}

    public func scheduleFlush() {
        let shouldSchedule = isPending.withLock {
            if $0 { return false }
            $0 = true
            return true
        }
        guard shouldSchedule else { return }
        Idle { [weak self] in
            StateManager.updateViews()
            self?.isPending.withLock { $0 = false }
        }
    }
}