//
//  MabAnalyticsEvents.swift
//  Pods
//
//  Created by 250102 on 2025/5/10.
//

// AnalyticsEvents 单例
internal class AnalyticsEvents {
    
    // 静态单例实例
    static let shared = AnalyticsEvents()
    
    // 私有初始化方法确保单例模式
    private init() {}
    
    // 使用NSHashTable来存储弱引用的处理器
    private var handlers = NSHashTable<AnyObject>.weakObjects()
    
    func registerHandler(handler: AnalyticsEventHandler) {
        handlers.add(handler as AnyObject)
    }
    
    func unregisterHandler(handler: AnalyticsEventHandler) {
        for existingHandler in handlers.allObjects {
            if let existing = existingHandler as? AnalyticsEventHandler,
               existing === handler as AnyObject {
                handlers.remove(existingHandler)
                break
            }
        }
    }
    
    func onEvent(name: String, param: [String: Any]? = nil) {
        for case let handler as AnalyticsEventHandler in handlers.allObjects {
            handler.onEvent(name: name, param: param)
        }
    }
    
    func onEvent(name: String, pairs: (String, any Any)...) {
        let paramMap = Dictionary(uniqueKeysWithValues: pairs)
        onEvent(name: name, param: paramMap)
    }
}

// AnalyticsEventHandler 协议 - 不需要遵循Hashable
public protocol AnalyticsEventHandler: AnyObject {
    func onEvent(name: String, param: [String: Any]?)
}