AnalyticsWithClasses.swift

//: Playground - noun: a place where people can play

import Foundation

protocol EventType {
    var name: String { get }
    var info: [ String : Any ] { get }
}

protocol TimedEventType {
    var name: String { get }
    var category: String { get }
    var interval: TimeInterval { get }
}

class Event: EventType {
    let name: String
    let info: [ String : Any ]
    
    init(_ name:String, _ info: [ String : Any ]) {
        self.name = name
        self.info = info
    }
}

class TimedEvent: TimedEventType {
    let name: String
    let category: String
    let interval: TimeInterval
    
    init(_ name:String, _ category: String, _ interval: TimeInterval) {
        self.name = name
        self.category = category
        self.interval = interval
    }
}

enum SBTEvents {
    class action1: Event {
        init(param:String) {
            super.init("Action 1", [ "param" : param ])
        }
    }
    
    class action2: TimedEvent {
        init(interval:TimeInterval) {
            super.init("Action 1", "Some Category", interval)
        }
    }
}

class Analytics {
    private static var shareInstance:Analytics!
    
    static var shared:Analytics {
        if shareInstance == nil {
            shareInstance = Analytics()
        }
        return shareInstance
    }
    
    private init() {
        /* Initialize some analytics implementations */
    }
    
    func log(event:EventType) {
        print("\(event.name) \(event.info)")
    }
    
    func log(event:TimedEventType) {
        print("\(event.name) \(event.category) \(event.interval)")
    }
    
    func log(screen:String) {
        print(screen)
    }
}

Analytics.shared.log(event: SBTEvents.action1(param: "Some value"))
Analytics.shared.log(event: SBTEvents.action2(interval: 2.0))