Code scanner UI in the order listing screen

WooCommerce/src/main/kotlin/com/woocommerce/android/ui/main/MainActivity.kt

@@ -940,7 +940,8 @@ class MainActivity :
         binding.bottomNav.currentPosition = ORDERS
         binding.bottomNav.active(ORDERS.position)
         val action = OrderListFragmentDirections.actionOrderListFragmentToOrderCreationFragment(
-            OrderCreateEditViewModel.Mode.Creation
+            OrderCreateEditViewModel.Mode.Creation,
+            null
         )
         navController.navigateSafely(action)
     }

WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/OrderNavigator.kt

@@ -182,7 +182,8 @@ class OrderNavigator @Inject constructor() {
             is EditOrder -> {
                 OrderDetailFragmentDirections
                     .actionOrderDetailFragmentToOrderCreationFragment(
-                        OrderCreateEditViewModel.Mode.Edit(target.orderId)
+                        OrderCreateEditViewModel.Mode.Edit(target.orderId),
+                        null
                     ).let { fragment.findNavController().navigateSafely(it) }
             }
             is ViewCustomFields -> {

WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/creation/OrderCreateEditViewModel.kt

@@ -43,6 +43,7 @@ import com.woocommerce.android.analytics.AnalyticsTracker.Companion.OrderNoteTyp
 import com.woocommerce.android.analytics.AnalyticsTracker.Companion.VALUE_FLOW_CREATION
 import com.woocommerce.android.analytics.AnalyticsTracker.Companion.VALUE_FLOW_EDITING
 import com.woocommerce.android.analytics.AnalyticsTrackerWrapper
+import com.woocommerce.android.extensions.isNotNullOrEmpty
 import com.woocommerce.android.extensions.runWithContext
 import com.woocommerce.android.model.Address
 import com.woocommerce.android.model.Order
@@ -172,6 +173,11 @@ class OrderCreateEditViewModel @Inject constructor(
                     )
                 }
                 monitorOrderChanges()
+                // Presence of barcode indicates that this screen was called from the
+                // Order listing screen after scanning the barcode.
+                if (args.sku.isNotNullOrEmpty()) {
+                    fetchProductBySKU(args.sku!!)
+                }
             }
             is Mode.Edit -> {
                 viewModelScope.launch {
@@ -189,7 +195,6 @@ class OrderCreateEditViewModel @Inject constructor(
             }
         }
     }
-
     fun onCustomerNoteEdited(newNote: String) {
         _orderDraft.value.let { order ->
             tracker.track(

WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/list/OrderListFragment.kt

@@ -49,6 +49,7 @@ import com.woocommerce.android.ui.jitm.JitmFragment
 import com.woocommerce.android.ui.main.MainActivity
 import com.woocommerce.android.ui.main.MainNavigationRouter
 import com.woocommerce.android.ui.orders.OrderStatusUpdateSource
+import com.woocommerce.android.ui.orders.creation.IsAddProductViaBarcodeScanningEnabled
 import com.woocommerce.android.ui.orders.creation.OrderCreateEditViewModel
 import com.woocommerce.android.ui.orders.list.OrderListViewModel.OrderListEvent.ShowErrorSnack
 import com.woocommerce.android.ui.orders.list.OrderListViewModel.OrderListEvent.ShowOrderFilters
@@ -87,6 +88,8 @@ class OrderListFragment :
     internal lateinit var currencyFormatter: CurrencyFormatter
     @Inject
     lateinit var feedbackPrefs: FeedbackPrefs
+    @Inject
+    lateinit var isAddProductViaBarcodeScanningEnabled: IsAddProductViaBarcodeScanningEnabled
 
     private val viewModel: OrderListViewModel by viewModels()
     private var snackBar: Snackbar? = null
@@ -144,6 +147,9 @@ class OrderListFragment :
 
         orderListMenu = menu
         searchMenuItem = menu.findItem(R.id.menu_search)
+        // TODO Remove the barcode setting visibility logic after the feature is in production.
+        val barcodeOption = menu.findItem(R.id.menu_barcode)
+        barcodeOption.isVisible = isAddProductViaBarcodeScanningEnabled()
         searchView = searchMenuItem?.actionView as SearchView?
         searchView?.queryHint = getSearchQueryHint()
     }
@@ -256,6 +262,10 @@ class OrderListFragment :
                 enableSearchListeners()
                 true
             }
+            R.id.menu_barcode -> {
+                viewModel.startScan()
+                true
+            }
             else -> false
         }
     }
@@ -349,6 +359,9 @@ class OrderListFragment :
                 is OrderListViewModel.OrderListEvent.ShowIPPDismissConfirmationDialog -> {
                     showIPPFeedbackDismissConfirmationDialog()
                 }
+                is OrderListViewModel.OrderListEvent.OnBarcodeScanned -> {
+                    openOrderCreationFragment(event.code)
+                }
                 else -> event.isHandled = false
             }
         }
@@ -451,12 +464,13 @@ class OrderListFragment :
         findNavController().navigateSafely(R.id.action_orderListFragment_to_orderFilterListFragment)
     }
 
-    private fun openOrderCreationFragment() {
+    private fun openOrderCreationFragment(code: String? = null) {
         OrderDurationRecorder.startRecording()
         AnalyticsTracker.track(AnalyticsEvent.ORDERS_ADD_NEW)
         findNavController().navigateSafely(
             OrderListFragmentDirections.actionOrderListFragmentToOrderCreationFragment(
-                OrderCreateEditViewModel.Mode.Creation
+                OrderCreateEditViewModel.Mode.Creation,
+                code
             )
         )
     }

WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/list/OrderListViewModel.kt

@@ -36,6 +36,8 @@ import com.woocommerce.android.notifications.NotificationChannelType
 import com.woocommerce.android.tools.NetworkStatus
 import com.woocommerce.android.tools.SelectedSite
 import com.woocommerce.android.ui.orders.OrderStatusUpdateSource
+import com.woocommerce.android.ui.orders.creation.CodeScanner
+import com.woocommerce.android.ui.orders.creation.CodeScannerStatus
 import com.woocommerce.android.ui.orders.details.OrderDetailRepository
 import com.woocommerce.android.ui.orders.filters.domain.GetSelectedOrderFiltersCount
 import com.woocommerce.android.ui.orders.filters.domain.GetWCOrderListDescriptorWithFilters
@@ -105,6 +107,7 @@ class OrderListViewModel @Inject constructor(
     private val analyticsTracker: AnalyticsTrackerWrapper,
     private val appPrefs: AppPrefs,
     private val feedbackPrefs: FeedbackPrefs,
+    private val codeScanner: CodeScanner,
 ) : ScopedViewModel(savedState), LifecycleOwner {
     private val lifecycleRegistry: LifecycleRegistry by lazy {
         LifecycleRegistry(this)
@@ -279,6 +282,21 @@ class OrderListViewModel @Inject constructor(
         }
     }
 
+    fun startScan() {
+        launch {
+            codeScanner.startScan().collect { status ->
+                when (status) {
+                    is CodeScannerStatus.Failure -> {
+                        // TODO handle failure case
+                    }
+                    is CodeScannerStatus.Success -> {
+                        triggerEvent(OrderListEvent.OnBarcodeScanned(status.code))
+                    }
+                }
+            }
+        }
+    }
+
     /**
      * Track user clicked to open an order and the status of that order, along with some
      * data about the order custom fields
@@ -718,6 +736,8 @@ class OrderListViewModel @Inject constructor(
         object ShowIPPDismissConfirmationDialog : OrderListEvent()
 
         data class OpenIPPFeedbackSurveyLink(val url: String) : OrderListEvent()
+
+        data class OnBarcodeScanned(val code: String) : OrderListEvent()
     }
 
     @Parcelize

WooCommerce/src/main/res/menu/menu_order_list_fragment.xml

@@ -1,6 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/menu_barcode"
+        android:icon="@drawable/ic_barcode"
+        android:title="@string/scan_barcode"
+        app:showAsAction="always" />
     <item
         android:id="@+id/menu_search"
         android:icon="@drawable/ic_search_24dp"

WooCommerce/src/main/res/navigation/nav_graph_main.xml

@@ -104,6 +104,10 @@
             <argument
                 android:name="mode"
                 app:argType="com.woocommerce.android.ui.orders.creation.OrderCreateEditViewModel$Mode" />
+            <argument
+                android:name="sku"
+                app:argType="string"
+                app:nullable="true"/>
         </action>
     </fragment>
     <fragment

WooCommerce/src/main/res/navigation/nav_graph_order_creations.xml

@@ -95,6 +95,10 @@
         <argument
             android:name="mode"
             app:argType="com.woocommerce.android.ui.orders.creation.OrderCreateEditViewModel$Mode" />
+        <argument
+            android:name="sku"
+            app:argType="string"
+            app:nullable="true"/>
     </fragment>
     <dialog
         android:id="@+id/orderStatusSelectorDialog"

WooCommerce/src/main/res/navigation/nav_graph_orders.xml

@@ -245,6 +245,10 @@
             <argument
                 android:name="mode"
                 app:argType="com.woocommerce.android.ui.orders.creation.OrderCreateEditViewModel$Mode" />
+            <argument
+                android:name="sku"
+                app:argType="string"
+                app:nullable="true"/>
         </action>
 
         <action

WooCommerce/src/main/res/values/strings.xml

@@ -99,6 +99,7 @@
     <string name="emdash" translatable="false">\u2014</string>
     <string name="share">Share</string>
     <string name="search">Search</string>
+    <string name="scan_barcode">Scan Barcode</string>
     <string name="clear">Clear</string>
     <string name="done">Done</string>
     <string name="back">Back</string>

WooCommerce/src/test/kotlin/com/woocommerce/android/ui/orders/OrderListViewModelTest.kt

@@ -18,6 +18,8 @@ import com.woocommerce.android.model.RequestResult
 import com.woocommerce.android.notifications.NotificationChannelType
 import com.woocommerce.android.tools.NetworkStatus
 import com.woocommerce.android.tools.SelectedSite
+import com.woocommerce.android.ui.orders.creation.CodeScanner
+import com.woocommerce.android.ui.orders.creation.CodeScannerStatus
 import com.woocommerce.android.ui.orders.details.OrderDetailRepository
 import com.woocommerce.android.ui.orders.filters.domain.GetSelectedOrderFiltersCount
 import com.woocommerce.android.ui.orders.filters.domain.GetWCOrderListDescriptorWithFilters
@@ -98,6 +100,7 @@ class OrderListViewModelTest : BaseUnitTest() {
     private val analyticsTracker: AnalyticsTrackerWrapper = mock()
     private val appPrefs = mock<AppPrefs>()
     private val feedbackPrefs = mock<FeedbackPrefs>()
+    private val codeScanner = mock<CodeScanner>()
 
     @Before
     fun setup() = testBlocking {
@@ -148,6 +151,7 @@ class OrderListViewModelTest : BaseUnitTest() {
         analyticsTracker = analyticsTracker,
         appPrefs = appPrefs,
         feedbackPrefs = feedbackPrefs,
+        codeScanner = codeScanner,
     )
 
     @Test
@@ -954,6 +958,38 @@ class OrderListViewModelTest : BaseUnitTest() {
             assertEquals(IPPSurveyFeedbackBannerState.Hidden, viewModel.viewState.ippFeedbackBannerState)
         }
 
+    // region barcode scanner
+
+    @Test
+    fun `when code scanner succeeds, then trigger proper event`() {
+        whenever(codeScanner.startScan()).thenAnswer {
+            flow<CodeScannerStatus> {
+                emit(CodeScannerStatus.Success("12345"))
+            }
+        }
+
+        viewModel = createViewModel()
+        viewModel.startScan()
+
+        assertThat(viewModel.event.value).isInstanceOf(OrderListViewModel.OrderListEvent.OnBarcodeScanned::class.java)
+    }
+
+    @Test
+    fun `when code scanner succeeds, then trigger event with proper sku`() {
+        whenever(codeScanner.startScan()).thenAnswer {
+            flow<CodeScannerStatus> {
+                emit(CodeScannerStatus.Success("12345"))
+            }
+        }
+
+        viewModel = createViewModel()
+        viewModel.startScan()
+
+        assertThat(viewModel.event.value).isEqualTo(OrderListViewModel.OrderListEvent.OnBarcodeScanned("12345"))
+    }
+
+    //endregion
+
     private companion object {
         const val ANY_SEARCH_QUERY = "search query"
 

WooCommerce/src/test/kotlin/com/woocommerce/android/ui/orders/creation/CreationFocusedOrderCreateEditViewModelTest.kt

@@ -4,6 +4,7 @@ import com.woocommerce.android.R
 import com.woocommerce.android.analytics.AnalyticsEvent
 import com.woocommerce.android.analytics.AnalyticsTracker
 import com.woocommerce.android.analytics.AnalyticsTracker.Companion.VALUE_FLOW_CREATION
+import com.woocommerce.android.initSavedStateHandle
 import com.woocommerce.android.model.Address
 import com.woocommerce.android.model.Order
 import com.woocommerce.android.ui.orders.OrderNavigationTarget.ViewOrderStatusSelector
@@ -21,6 +22,7 @@ import com.woocommerce.android.ui.orders.creation.navigation.OrderCreateEditNavi
 import com.woocommerce.android.ui.orders.creation.navigation.OrderCreateEditNavigationTarget.SelectItems
 import com.woocommerce.android.ui.orders.creation.navigation.OrderCreateEditNavigationTarget.ShowCreatedOrder
 import com.woocommerce.android.ui.orders.creation.navigation.OrderCreateEditNavigationTarget.ShowProductDetails
+import com.woocommerce.android.ui.products.models.SiteParameters
 import com.woocommerce.android.ui.products.selector.ProductSelectorViewModel
 import com.woocommerce.android.viewmodel.MultiLiveEvent.Event
 import com.woocommerce.android.viewmodel.MultiLiveEvent.Event.Exit
@@ -34,14 +36,18 @@ import org.junit.Test
 import org.mockito.kotlin.any
 import org.mockito.kotlin.doReturn
 import org.mockito.kotlin.mock
+import org.mockito.kotlin.times
 import org.mockito.kotlin.verify
+import org.mockito.kotlin.whenever
 import org.wordpress.android.fluxc.network.rest.wpcom.wc.order.CoreOrderStatus
+import org.wordpress.android.fluxc.store.WCProductStore
 import java.math.BigDecimal
 import java.util.function.Consumer
 
 @ExperimentalCoroutinesApi
 class CreationFocusedOrderCreateEditViewModelTest : UnifiedOrderEditViewModelTest() {
     override val mode: Mode = Creation
+    override val sku: String = "123"
     override val tracksFlow: String = VALUE_FLOW_CREATION
 
     companion object {
@@ -1109,4 +1115,56 @@ class CreationFocusedOrderCreateEditViewModelTest : UnifiedOrderEditViewModelTes
             mapOf(AnalyticsTracker.KEY_FLOW to VALUE_FLOW_CREATION)
         )
     }
+
+    @Test
+    fun `given sku, when view model init, then fetch product information`() {
+        testBlocking {
+            val navArgs = OrderCreateEditFormFragmentArgs(
+                OrderCreateEditViewModel.Mode.Creation, "123"
+            ).initSavedStateHandle()
+            whenever(parameterRepository.getParameters("parameters_key", navArgs)).thenReturn(
+                SiteParameters(
+                    currencyCode = "",
+                    currencySymbol = null,
+                    currencyFormattingParameters = null,
+                    weightUnit = null,
+                    dimensionUnit = null,
+                    gmtOffset = 0F
+                )
+            )
+
+            createSut(navArgs)
+
+            verify(productListRepository, times(2)).searchProductList(
+                "123",
+                WCProductStore.SkuSearchOptions.ExactSearch
+            )
+        }
+    }
+
+    @Test
+    fun `given empty sku, when view model init, then do not fetch product information`() {
+        testBlocking {
+            val navArgs = OrderCreateEditFormFragmentArgs(
+                OrderCreateEditViewModel.Mode.Creation, ""
+            ).initSavedStateHandle()
+            whenever(parameterRepository.getParameters("parameters_key", navArgs)).thenReturn(
+                SiteParameters(
+                    currencyCode = "",
+                    currencySymbol = null,
+                    currencyFormattingParameters = null,
+                    weightUnit = null,
+                    dimensionUnit = null,
+                    gmtOffset = 0F
+                )
+            )
+
+            createSut(navArgs)
+
+            verify(productListRepository, times(1)).searchProductList(
+                "123",
+                WCProductStore.SkuSearchOptions.ExactSearch
+            )
+        }
+    }
 }

WooCommerce/src/test/kotlin/com/woocommerce/android/ui/orders/creation/EditFocusedOrderCreateEditViewModelTest.kt

@@ -31,6 +31,7 @@ import org.mockito.kotlin.verify
 @RunWith(MockitoJUnitRunner.Silent::class)
 class EditFocusedOrderCreateEditViewModelTest : UnifiedOrderEditViewModelTest() {
     override val mode: Mode = Edit(defaultOrderValue.id)
+    override val sku: String = "123"
     override val tracksFlow: String = VALUE_FLOW_EDITING
 
     override fun initMocksForAnalyticsWithOrder(order: Order) {