MiMO_iOS/MiMoLive/Global/MODelayTask.swift

//
//  MODelayTask.swift
//  MiMoLive
//
//  Created by OneeChan on 2025/10/10.
//

import Foundation


class MODelayTask {
    // 保存任务实例，用于取消
    private static var workItems = NSMapTable<NSString, DispatchWorkItem>.init(
        keyOptions: .strongMemory,
        valueOptions: .weakMemory
    )
    
    /// 执行延时任务（可取消）
    /// - Parameters:
    ///   - delay: 延时秒数
    ///   - queue: 执行队列（默认主线程）
    ///   - task: 延时后执行的任务
    @discardableResult
    static func perform(delay: TimeInterval, queue: DispatchQueue = .main, task: @escaping () -> Void) -> String {
        // 创建任务
        let workItem = DispatchWorkItem(block: task)
        let uuid = UUID().uuidString
        workItems.setObject(workItem, forKey: uuid as NSString)
        
        // 延时执行
        queue.asyncAfter(deadline: .now() + delay, execute: workItem)
        
        return uuid
    }
    
    /// 取消延时任务
    static func cancel(key: String?) {
        guard let key else { return }
        guard let task = workItems.object(forKey: key as NSString) else {
            return
        }
        workItems.removeObject(forKey: key as NSString)
        
        task.cancel()
    }
}