AnalyticsManager class to easily log and manage events in iOS apps

AnalyticsManager.swift

import FirebaseAnalytics
import Crashlytics

enum AnalyticsEvent {
	
	case materialDetails(matName: String?, matNumber: String?)
	case addMaterialInTab(tabName: String)
	case tabPressed(tabName: String)
	case sendOrder(agentCode: String?, customerNumber: String?, totalAmount: NSNumber?, userCurrency: String?, itemsQty: Int?)
	case loggedUserInfo(customerNumber: String?, contactEmail: String?, userMobile: String?)
}

extension AnalyticsEvent{
	var params: [String : Any] {
		switch self {
			case .materialDetails(let matName, let matNumber):
				return [
					"material_name"   : matName   ?? "" as NSString,
					"material_number" : matNumber ?? "" as NSString
				]
			case .sendOrder(let agentCode, let customerNumber, let totalAmount, let userCurrency, let itemsQty):
				return [
					"Customer_number" : customerNumber ?? "" as NSString,
					"Total_amount"    : totalAmount    ?? 0 as NSNumber,
					"User_currency"   : userCurrency   ?? "" as NSString,
					"Items_quantity"  : itemsQty       ?? 0 as NSNumber
				]
			case .addMaterialTab(let tabName),
				 .tabPressed(let tabName):
				return ["tab_name" : tabName as NSString]
			case .loggedUserInfo(let customerSAPNumber, let contactEmail, let userMobile):
				return [
					"customer_number" : customerNumber ?? "" as NSString,
					"contact_email"       : contactEmail      ?? "" as NSString,
					"user_mobile"         : userMobile        ?? "" as NSString,
				]
			default:
				return [:]
		}
	}
	
	var name: String {
		switch self {
			case .materialDetails:
				return "display_material_details"
			case .sendOrder:
				return "send_order"
			case .tabPressed:
				return "tab_pressed"
			case .addMaterialTab:
				return "add_material_tab"
			case .loggedUserInfo:
				return "user_logged_in"
			}
		}
}


class AnalyticsManager{
	static let shared = AnalyticsManager()
	
	func log(event: AnalyticsEvent) {
		// log event to Firebase
		Analytics.logEvent(event.name, parameters: event.params)
    // log event to Fabric
    Answers.logCustomEvent(withName: event.name, customAttributes: event.params)
    
	}
	
}

UseCase.swift

class UseCase {
  AnalyticsManager.shared.log(event: .addMaterialTab(tabName: currentTab))
}