import Foundation

/// 漏斗追踪器
final class FunnelTracker {

    static let shared = FunnelTracker()

    private var sessions: [String: [String]] = [:]
    private let lock = NSLock()

    private init() {}

    /// 追踪事件
    func track(name: String, properties: [String: Any?]) {
        // 简化实现，后续可扩展
    }

    /// 获取当前会话的事件序列
    func getSessionEvents(sessionId: String) -> [String] {
        lock.lock()
        defer { lock.unlock() }
        return sessions[sessionId] ?? []
    }

    /// 清除会话
    func clearSession(_ sessionId: String) {
        lock.lock()
        defer { lock.unlock() }
        sessions.removeValue(forKey: sessionId)
    }
}