From 37cd46dee8e93805f904db170cf1bbf0fd4d6aaf Mon Sep 17 00:00:00 2001
From: lobroda <lou.broda@etu.uca.fr>
Date: Fri, 20 Oct 2023 16:22:35 +0100
Subject: [PATCH] ADD : Scan BarCode working - method to add book ToAdd

---
 LivreLand/View/ScanView.xaml    | 15 ++-----
 LivreLand/View/ScanView.xaml.cs |  1 +
 LivreLand/ViewModel/ScanVM.cs   | 71 +++++++++++++++++++++++----------
 3 files changed, 55 insertions(+), 32 deletions(-)

diff --git a/LivreLand/View/ScanView.xaml b/LivreLand/View/ScanView.xaml
index 0ea1198..e5519f1 100644
--- a/LivreLand/View/ScanView.xaml
+++ b/LivreLand/View/ScanView.xaml
@@ -13,12 +13,12 @@
         </Grid.RowDefinitions>
 
         <Grid Grid.Row="0">
-            <cv:CameraView BarCodeDetectionEnabled="True"
+            <cv:CameraView x:Name="cameraView"
+                           BarCodeDetectionEnabled="True"
                            Camera="{Binding ScanVM.Camera}"
                            Cameras="{Binding ScanVM.Cameras}"
                            NumCamerasDetected="{Binding ScanVM.CamerasCount}"
-                           AutoStartPreview="{Binding ScanVM.AutoStartPreview}"
-                           AutoStartRecording="{Binding ScanVM.AutoStartRecording}"
+                           BarCodeResults="{Binding ScanVM.BarCodeResult}"
                            WidthRequest="300"
                            HeightRequest="200">
                 <cv:CameraView.Behaviors>
@@ -28,7 +28,7 @@
                                                     Command="{Binding ScanVM.CamerasLoadCommand}"/>
                 </cv:CameraView.Behaviors>
             </cv:CameraView>
-        </Grid>
+        </Grid> 
         
         <Grid Margin="2"
               Grid.Row="1">
@@ -44,13 +44,6 @@
                    TextColor="{StaticResource Blue100Accent}"
                    Grid.Column="0"/>
 
-            <Button Text="Start Camera" 
-                    Command="{Binding ScanVM.StartCameraCommand}"
-                    Grid.Column="2"/>
-
-            <Button Text="Start Record" 
-                    Command="{Binding ScanVM.StartRecordingCommand}"/>
-
             <Label Text="{Binding ScanVM.BarcodeText}"
                    TextColor="{StaticResource Blue100Accent}"
                    Grid.Column="4"/>
diff --git a/LivreLand/View/ScanView.xaml.cs b/LivreLand/View/ScanView.xaml.cs
index cd8b3aa..fd22222 100644
--- a/LivreLand/View/ScanView.xaml.cs
+++ b/LivreLand/View/ScanView.xaml.cs
@@ -16,6 +16,7 @@ public partial class ScanView : ContentPage
 	{
         ScanVM = scanVM;
 		InitializeComponent();
+        ScanVM.CameraView = cameraView;
         BindingContext = this;
 	}
 
diff --git a/LivreLand/ViewModel/ScanVM.cs b/LivreLand/ViewModel/ScanVM.cs
index 7e43475..e2b0ebe 100644
--- a/LivreLand/ViewModel/ScanVM.cs
+++ b/LivreLand/ViewModel/ScanVM.cs
@@ -8,6 +8,7 @@ using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Input;
 using ViewModels;
+using ZXing;
 
 namespace LivreLand.ViewModel
 {
@@ -15,26 +16,40 @@ namespace LivreLand.ViewModel
     {
         #region Fields
 
+        private CameraView cameraView;
         private CameraInfo camera = null;
         private ObservableCollection<CameraInfo> cameras = new();
         private int camerasCount;
+        private Result[] result;
         private string barcodeText = "ISBN";
 
         #endregion
 
         #region Properties
 
+        public CameraView CameraView
+        {
+            get => cameraView;
+            set
+            {
+                if (cameraView != value)
+                {
+                    cameraView = value;
+                    OnPropertyChanged(nameof(CameraView));
+                }
+            }
+        }
+
         public CameraInfo Camera
         {
             get => camera;
             set
             {
-                camera = value;
-                OnPropertyChanged(nameof(Camera));
-                AutoStartPreview = false;
-                OnPropertyChanged(nameof(AutoStartPreview));
-                AutoStartPreview = true;
-                OnPropertyChanged(nameof(AutoStartPreview));
+                if (camera != value)
+                {
+                    camera = value;
+                    OnPropertyChanged(nameof(Camera));
+                }
             }
         }
 
@@ -63,6 +78,19 @@ namespace LivreLand.ViewModel
             }
         }
 
+        public Result[] BarCodeResult
+        {
+            get => result;
+            set
+            {
+                if (result != value)
+                {
+                    result = value;
+                    OnPropertyChanged(nameof(BarCodeResult));
+                }
+            }
+        }
+
         public string BarcodeText
         {
             get => barcodeText;
@@ -84,12 +112,10 @@ namespace LivreLand.ViewModel
 
         public ManagerVM Manager { get; private set; }
 
-        public ICommand StartCameraCommand { get; private set; }
+        public ICommand CamerasLoadCommand { get; private set; }
 
         public ICommand BarcodeDetectCommand { get; private set; }
 
-        public ICommand StartRecordingCommand { get; private set; }
-
         #endregion
 
         #region Constructor
@@ -98,30 +124,33 @@ namespace LivreLand.ViewModel
         {
             Navigator = navigatorVM;
             Manager = managerVM;
-            StartCameraCommand = new RelayCommand(() => StartCamera());
+            CamerasLoadCommand = new RelayCommand(() => CamerasLoad());
             BarcodeDetectCommand = new RelayCommand(() => BarcodeDetect());
-            StartRecordingCommand = new RelayCommand(() => StartRecording());
         }
 
         #endregion
 
         #region Methods
 
-        private async Task StartCamera()
+        private async Task CamerasLoad()
         {
-            AutoStartPreview = true;
-            OnPropertyChanged(nameof(AutoStartPreview));
+            if (Cameras.Count > 0)
+            {
+                Camera = Cameras.First();
+                MainThread.BeginInvokeOnMainThread(async () =>
+                {
+                    await CameraView.StopCameraAsync();
+                    await CameraView.StartCameraAsync();
+                });
+            }
         }
 
         private async Task BarcodeDetect()
         {
-
-        }
-
-        private async Task StartRecording()
-        {
-            AutoStartRecording = true;
-            OnPropertyChanged(nameof(AutoStartRecording));
+            MainThread.BeginInvokeOnMainThread(() =>
+            {
+                BarcodeText = BarCodeResult[0].Text;
+            });
         }
 
         #endregion