Example of using Firebase analytics

FA.swift

import Foundation
import Firebase

typealias FIRParamters = [String : NSObject]

protocol EventReportType {
    var name: String { get }
    var parameters: FIRParamters? { get }
    func sendLog()
}

extension EventReportType {
    var parameters: FIRParamters? { return nil }
    
    func sendLog() {
        FIRAnalytics.logEvent(withName: name, parameters: parameters)
    }
}

struct EventReporter {
    struct AppOpen: EventReportType {
        let name = kFIREventAppOpen
    }
    
    struct SignUp: EventReportType {
        enum Method: String {
            case phone = "phone"
            case mail = "mail"
        }
        
        let name = kFIREventSignUp
        var parameters: FIRParamters? {
            var dic = FIRParamters()
            dic[kFIRParameterSignUpMethod] = signupMethod.rawValue as NSObject
            return dic
        }
        let signupMethod: Method
    }
    
    struct SelectContent: EventReportType {
        let name = kFIREventSelectContent
        
        var parameters: FIRParamters? {
            var dic = FIRParamters()
            if let type = contentType {
                dic[kFIRParameterContentType] = type as NSObject
            }
            if let id = itemID {
                dic[kFIRParameterItemID] = id as NSObject
            }
            return dic
        }
        let contentType: String?
        let itemID: String?
    }
    
}