Bookings: Show bookings tab when site is eligible (#16153)

Author: itsmeichigo

WooCommerce/Classes/Bookings/BookingsTabEligibilityChecker.swift

@@ -1,4 +1,3 @@
-// periphery:ignore:all
 import Foundation
 import Yosemite
 import Experiments

WooCommerce/Classes/Bookings/BookingsTabView.swift

@@ -0,0 +1,47 @@
+import SwiftUI
+
+/// Hosting view for `BookingsTabView`
+///
+final class BookingsTabViewHostingController: UIHostingController<BookingsTabView> {
+    // periphery: ignore
+    init(siteID: Int64) {
+        super.init(rootView: BookingsTabView())
+        configureTabBarItem()
+    }
+
+    @MainActor @preconcurrency required dynamic init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override var shouldShowOfflineBanner: Bool {
+        return true
+    }
+
+    // periphery: ignore
+    func didSwitchStore(id: Int64) {
+        // TODO: update view
+    }
+}
+
+private extension BookingsTabViewHostingController {
+    func configureTabBarItem() {
+        tabBarItem.image = UIImage(systemName: "calendar")
+        tabBarItem.title = "Bookings"
+        tabBarItem.accessibilityIdentifier = "tab-bar-bookings-item"
+    }
+}
+
+/// Main content of the Bookings tab
+///
+struct BookingsTabView: View {
+    @State private var visibility: NavigationSplitViewVisibility = .all
+
+    var body: some View {
+        NavigationSplitView(columnVisibility: $visibility) {
+            Text("Booking List")
+        } detail: {
+            Text("Booking Detail Screen")
+        }
+        .navigationSplitViewStyle(.balanced)
+    }
+}

WooCommerce/Classes/POS/TabBar/POSTabCoordinator.swift

@@ -23,7 +23,7 @@ final class POSTabViewController: UIViewController {
 /// Coordinator for the Point of Sale tab.
 ///
 final class POSTabCoordinator {
-    private let siteID: Int64
+    private(set) var siteID: Int64
     private let tabContainerController: TabContainerController
     private let viewControllerToPresent: UIViewController
     private let storesManager: StoresManager
@@ -107,12 +107,55 @@ final class POSTabCoordinator {
     }
 
     func onTabSelected() {
-        presentPOSView()
+        presentPOSView(siteID: siteID)
+    }
+
+    func didSwitchStore(id: Int64) {
+        self.siteID = id
+
+        // Resets lazy properties so they get recreated with new siteID
+        posItemFetchStrategyFactory = PointOfSaleItemFetchStrategyFactory(
+            siteID: siteID,
+            credentials: credentials,
+            selectedSite: defaultSitePublisher,
+            appPasswordSupportState: isAppPasswordSupported
+        )
+
+        posPopularItemFetchStrategyFactory =
+        PointOfSaleFixedItemFetchStrategyFactory(
+            fixedStrategy: posItemFetchStrategyFactory.popularStrategy()
+        )
+
+        posCouponFetchStrategyFactory = PointOfSaleCouponFetchStrategyFactory(
+            siteID: siteID,
+            currencySettings: currencySettings,
+            credentials: credentials,
+            selectedSite: defaultSitePublisher,
+            appPasswordSupportState: isAppPasswordSupported,
+            storage: storageManager
+        )
+
+        posCouponProvider = PointOfSaleCouponService(
+            siteID: siteID,
+            currencySettings: currencySettings,
+            credentials: credentials,
+            selectedSite: defaultSitePublisher,
+            appPasswordSupportState: isAppPasswordSupported,
+            storage: storageManager
+        )
+
+        barcodeScanService = PointOfSaleBarcodeScanService(
+            siteID: siteID,
+            credentials: credentials,
+            selectedSite: defaultSitePublisher,
+            appPasswordSupportState: isAppPasswordSupported,
+            currencySettings: currencySettings
+        )
     }
 }
 
 private extension POSTabCoordinator {
-    func presentPOSView() {
+    func presentPOSView(siteID: Int64) {
         Task { @MainActor [weak self] in
             guard let self else { return }
             let serviceAdaptor = POSServiceLocatorAdaptor()