AnalyticsManager.swift

protocol AnalyticsEventsLoggerProtocol {
    func setUserProperties(user: UserProfileModel)
    func trackEvent(event: EventProtocol)
}

// Firebase
class FirebaseEventLogger: AnalyticsEventsLoggerProtocol {
    func setUserProperties(user: UserProfileModel) {
        // set user properties
    }

    func trackEvent(event: EventProtocol) {
        // add implementation of tracking events
    }
}

// Mixpanel
class MixpanelEventLogger: AnalyticsEventsLoggerProtocol {
    func setUserProperties(user: UserProfileModel) {
        // set user properties
    }

    func trackEvent(event: EventProtocol) {
        // add implementation of tracking events
    }
}

// Manager
protocol AnalyticsManagerProtocol {
    func setUp()
    func trackEvent(_ event: EventProtocol,
                    params: [String: Any])
}

class AnalyticsManager: AnalyticsManagerProtocol {
    static let shared = AnalyticsManager()
    var loggers: [AnalyticsEventsLoggerProtocol] = []

    func setUp() {
     // Setup all the Analytics SDK   
    }
    
    func trackEvent(_ event: EventProtocol,
                    params: [String: Any] = [:]) {
        // add extra params to event

        // hit event from all tracking SDK's
        loggers.forEach({ logger in
            logger.trackEvent(event: event)
        })
    }
}