Display warning if there are more than 100 variations to edit

Author: Ecarrion

WooCommerce/Classes/ViewRelated/Products/Variations/Bulk Update/BulkUpdateViewController.swift

@@ -77,6 +77,7 @@ final class BulkUpdateViewController: UIViewController, GhostableViewController
                 self.sections = sections
                 self.removeGhostContent()
                 self.tableView.reloadData()
+                self.displayTooManyVariationsWarningIfNeeded()
             case .error:
                 self.removeGhostContent()
                 self.displaySyncingError()
@@ -147,6 +148,26 @@ final class BulkUpdateViewController: UIViewController, GhostableViewController
         let viewController = BulkUpdatePriceViewController(viewModel: bulkUpdatePriceSettingsViewModel)
         show(viewController, sender: nil)
     }
+
+    /// Displays a warning informing the user that only the first 100 variations would be editted.
+    /// This is due to API limitations.
+    ///
+    private func displayTooManyVariationsWarningIfNeeded() {
+        guard viewModel.shouldShowVariationLimitWarning else {
+            return
+        }
+
+        let bannerViewModel = TopBannerViewModel(title: nil,
+                                    infoText: Localization.tooManyVariations,
+                                    icon: .noticeImage,
+                                    iconTintColor: .warning,
+                                    isExpanded: false,
+                                    topButton: .none,
+                                    type: .warning)
+        let banner = TopBannerView(viewModel: bannerViewModel)
+        tableView.tableHeaderView = banner
+        tableView.updateHeaderHeight()
+    }
 }
 
 // MARK: - UITableViewDataSource Conformance
@@ -267,6 +288,8 @@ private extension BulkUpdateViewController {
         static let noticeRetryAction = NSLocalizedString("Retry", comment: "Retry Action")
         static let pricesUpdated = NSLocalizedString("Prices updated successfully.",
                                                      comment: "Notice title when updating the price via the bulk variation screen")
+        static let tooManyVariations = NSLocalizedString("Only the first 100 variations will be updated.",
+                                                         comment: "Warning when trying to bulk edit more than 100 variations")
     }
 }
 

WooCommerce/Classes/ViewRelated/Products/Variations/Bulk Update/BulkUpdateViewModel.swift

@@ -26,6 +26,10 @@ final class BulkUpdateViewModel {
     private let currencyFormatter: CurrencyFormatter
     private var onCancelButtonTapped: () -> Void
 
+    /// Returns `true` if there are more than 100 variations to edit.
+    ///
+    let shouldShowVariationLimitWarning: Bool
+
     /// Product Variations Controller.
     ///
     private lazy var resultsController: ResultsController<StorageProductVariation> = {
@@ -48,6 +52,7 @@ final class BulkUpdateViewModel {
 
     init(siteID: Int64,
          productID: Int64,
+         variationCount: Int,
          onCancelButtonTapped: @escaping () -> Void,
          storageManager: StorageManagerType = ServiceLocator.storageManager,
          storesManager: StoresManager = ServiceLocator.stores,
@@ -59,6 +64,7 @@ final class BulkUpdateViewModel {
         self.storesManager = storesManager
         self.currencySettings = currencySettings
         self.currencyFormatter = CurrencyFormatter(currencySettings: currencySettings)
+        self.shouldShowVariationLimitWarning = variationCount > Constants.numberOfObjects
         syncState = .notStarted
     }
 

WooCommerce/Classes/ViewRelated/Products/Variations/ProductVariationsViewController.swift

@@ -575,7 +575,10 @@ private extension ProductVariationsViewController {
         actionSheet.addDefaultActionWithTitle(ActionSheetStrings.bulkUpdate) { [weak self] _ in
             guard let self = self else { return }
 
-            let viewModel = BulkUpdateViewModel(siteID: self.siteID, productID: self.productID, onCancelButtonTapped: { [weak self] in
+            let viewModel = BulkUpdateViewModel(siteID: self.siteID,
+                                                productID: self.productID,
+                                                variationCount: self.product.variations.count,
+                                                onCancelButtonTapped: { [weak self] in
                 self?.dismiss(animated: true)
             })
             let navigationController = WooNavigationController(rootViewController: BulkUpdateViewController(viewModel: viewModel))