allset branch

import Branch
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]? = nil) -> Bool {

        let branch: Branch = Branch.getInstance()

        branch.initSession(launchOptions: launchOptions, andRegisterDeepLinkHandler: { params, error in
            if error == nil {

                branch.setRequestMetadataKey("$google_analytics_client_id", value: GAI.sharedInstance().defaultTracker.get(kGAIClientId) as NSString)

                if let id = UserAccountEntity().userId {
                    branch.setRequestMetadataKey("$google_analytics_user_id", value: NSNumber(value: id))
                }

                if let cid = params?["cid"] as? String {
                    TradeTracker.shared.identifyUser(branchId: cid)
                }

                if let canonicalId = params?["$canonical_identifier"] as? String,
                    let url = URL.init(string: canonicalId) {

                    DeeplinkCoordinator.shared.processDeeplinking(url)
                }

                BranchTracker.shared.trackInstall()

                let campaign = params?["~campaign"] as? String
                let channel = params?["~channel"] as? String
                let feature = params?["~feature"] as? String


                TradeTracker.shared.trackBranchInitWith(campaign, channel, feature)

            }
        })
}

class TradeTracker {
    func trackBranchInitWith( campaign: String?,  channel: String?, _ feature: String?) {
        let params = [kGAICampaignName: feature ?? "n/a",
                      kGAICampaignSource: channel ?? "n/a",
                      kGAICampaignMedium: campaign ?? "n/a",
                      kGAIDescription: "welcome_page"]

        let sv = GAIDictionaryBuilder.createScreenView()

        if let built = sv?.setAll(params).build() {
            tracker.send(built as! [AnyHashable : Any])
        }

        var action = "open"

        if firstOpen == false {
            firstOpen = true
            action = "first open"
        }

        let dictionaryBuilder = GAIDictionaryBuilder.createEvent(withCategory: "CustomBranch",
                                                                 action: action,
                                                                 label: nil,
                                                                 value: nil)

        if let build = dictionaryBuilder?.setAll(params).build() {
            tracker.send(build as! [AnyHashable : Any])
        }
    }
}