Offline mode

Components/WarningImage.razor

+@page "/warningimage"
+
+<div class="text-center">
+    <img src="./images/warning.png" class="w-50" alt="Warning!" />
+</div>
+
+@code {
+
+}

Pages/CaritasServiceFundVeloFoundConclusion.razor

     <div class="row no-gutters align-items-start justify-content-center w-100">
         <MatHeadline4 Style="font-family:Ubuntu;padding-top:1em">@i18n["Confirmation"]</MatHeadline4>
     </div>
-    @if (responseOk) {
+    @if (ResposeStatus.OK == responseStatus) {
         <div class="row no-gutters align-items-start justify-content-center w-100" style="height:fit-content">
             <div class="w-100" style="text-align: center">
                 <MatHeadline6 Style="font-family:Ubuntu">@i18n["FinishedTextFound"]</MatHeadline6>
             </div>
         </div>
     }
-    <div class="row no-gutters align-items-start justify-content-center w-100" style="height:fit-content">
-        @if (running) {
-            <div style="width:48px;margin:0 auto;">
-                <MatProgressCircle Indeterminate="true" Size="MatProgressCircleSize.Large" />
-            </div>
-            <div class="w-100" style="text-align:center;">
-                <h6 style="font-style:italic;padding-bottom:1em">@i18n["Info.Report.Transmitting"]</h6>
-            </div>
+<div class="row no-gutters align-items-start justify-content-center w-100" style="height:fit-content">
+    @if (running) {
+        <div style="width:48px;margin:0 auto;">
+            <MatProgressCircle Indeterminate="true" Size="MatProgressCircleSize.Large" />
+        </div>
+        <div class="w-100" style="text-align:center;">
+            <h6 style="font-style:italic;padding-bottom:1em">@i18n["Info.Report.Transmitting"]</h6>
+        </div>
+    } else {
+        if (ResposeStatus.OK == responseStatus) {
+            <Animate Animation="Animations.ZoomIn" Duration="TimeSpan.FromSeconds(2.5)">
+                <DoneImage></DoneImage>
+            </Animate>
+        } else if (ResposeStatus.Error == responseStatus) {
+            <Animate Animation="Animations.ZoomIn" Duration="TimeSpan.FromSeconds(2.5)">
+                <FailureImage></FailureImage>
+            </Animate>
         } else {
-            if (responseOk) {
-                <Animate Animation="Animations.ZoomIn" Duration="TimeSpan.FromSeconds(2.5)">
-                    <DoneImage></DoneImage>
-                </Animate>
-            } else {
-                <Animate Animation="Animations.ZoomIn" Duration="TimeSpan.FromSeconds(2.5)">
-                    <FailureImage></FailureImage>
-                </Animate>
-            }
+            <Animate Animation="Animations.ZoomIn" Duration="TimeSpan.FromSeconds(2.5)">
+                <WarningImage></WarningImage>
+            </Animate>
         }
-    </div>
+    }
+</div>
     <div class="row no-gutters align-items-end justify-content-center w-100" style="padding-bottom:2em;padding-top:2em">
         <div class="col w-100 text-center">
             <MatButton Class="w-50" Raised="true" @onclick="Finished">@i18n["Finished"]</MatButton>
 
 @code {
 
+    enum ResposeStatus : ushort {
+        OK = 1,
+        Error = 10,
+        NoConnection = 20
+    }
+
     private Animate doneAnimZoom;
-    private bool responseOk = false;
+    private ResposeStatus responseStatus = ResposeStatus.NoConnection;
     private bool running = true;
     private string referenceNumber;
     ReportResponse response;
         PageHistoryManager.AddPageToHistory(NavigationManager.Uri);
         try {
             response = await IBicycleRestService.SendFoundReport(ReportDataProvider.Report);
-            responseOk = System.Net.HttpStatusCode.OK == response.StatusCode ? true : false;
+            responseStatus = response==null ? ResposeStatus.NoConnection : System.Net.HttpStatusCode.OK == response.StatusCode ? ResposeStatus.OK : ResposeStatus.Error;
         } catch (HttpRequestException ex) {
             response = new(i18n.GetString("FoundBike"), new string[] { ex.Message });
-            responseOk = false;
+            responseStatus = ResposeStatus.Error;
         }
         running = false;
 
-        if (responseOk) {
+        if (ResposeStatus.OK == responseStatus) {
             Toaster.ShowSuccess(i18n.GetString("FoundBike"), response.Message);
             referenceNumber = (response.Data != null && response.Data.Length > 0) ? response.Data[0] : "-";
             PageHistoryManager.Reset();
-        } else {
+        } else if (ResposeStatus.Error == responseStatus) {
             Toaster.ShowError(response.Message, response.GetDataAsFormattedList());
+        } else {
+            Toaster.ShowWarning(i18n.GetString("Warning.NoConnection.Title"), i18n.GetString("Warning.NoConnection.Msg"));
         }
         StateHasChanged();
         AppState.NotifyChanged();

Pages/IndexPage.razor

 @inject Toaster Toaster;
 @inject IConfiguration Configuration;
 @inject IBicycleRestService IBicycleRestService;
+@inject OnlineStatusProvider OnlineStatusProvider;
 
 
 <div class="row h-100 justify-content-center">
     <div class="row align-items-end vw-100 h-50">
         <div class="col text-center">
             <h3 style="font-style:italic;padding-bottom:1em">@i18n["Welcome"]</h3>
-            <div>
-                <MatButton Disabled="@btnDisabled" Raised="true" Style="width:50%" @onclick="@((e) => ButtonClicked())">@i18n["Login"]</MatButton>
-            </div>
+            @*<div>
+                    <MatButton Disabled="@btnDisabled" Raised="true" Style="width:50%" @onclick="@((e) => NavigateToNext())">@i18n["Login"]</MatButton>
+                </div>*@
         </div>
     </div>
     <div class="row align-items-center justify-content-center vw-100 h-25">
             showProgressCircle = true;
             StateHasChanged();
             try {
-                IBicycleRestService.Initialize(Configuration);
+                IBicycleRestService.Initialize(Configuration, OnlineStatusProvider);
                 await MasterDataService.SynchronizeMasterdata();
             } catch (Exception) {
                 Toaster.ShowWarning(i18n.GetString("Warning.Masterdata.Title"), i18n.GetString("Warning.Masterdata.Msg"));
             } finally {
                 showProgressCircle = false;
+                NavigateToNext();
             }
         }
         btnDisabled = false;
         StateHasChanged();
     }
 
-    private void ButtonClicked() {
+    private void NavigateToNext() {
         NavigationManager.NavigateTo("./caritas_services");
-        AppState.LoggedIn = true;
     }
 }

Shared/NavMenu.razor

                     <MatAppBarSection>
                         <MatIconButton Icon="menu" OnClick="@((e) => ButtonClicked())"></MatIconButton>
                         @if (PageHistoryManager.CanGoBack()) {
-                            <MatIconButton Icon="keyboard_backspace" OnClick="@((e) => ButtonBackClicked())" Disabled="@BackButtonDisabled()"></MatIconButton>
+                            <MatIconButton Icon="@MatIconNames.Keyboard_backspace" OnClick="@((e) => ButtonBackClicked())" Disabled="@BackButtonDisabled()"></MatIconButton>
                         }
                         <MatAppBarTitle Class="navBar-title">@LocationUrl</MatAppBarTitle>
                     </MatAppBarSection>
                             </MatRipple>
                             <MatRipple Class="navmenu-mat-ripple" Color="@MatRippleColor.Default">
                                 <MatListItem Class="@((Index == 3) ? "bg-primary-color text-white" : "")" Style="margin-left:0;margin-right:0"
-                                             Href="info"
+                                             Disabled="true"
+                                             Href="extras"
                                              @onclick="@((e) => ButtonClicked(3))">
-                                    <MatIcon Icon="@MatIconNames.Error_outline" Style="transform: rotate(180deg)"></MatIcon>
-                                    <MatListItemText Style="padding-left:0.5em">@i18n["info"]</MatListItemText>
+                                    <MatIcon Icon="@MatIconNames.View_quilt"></MatIcon>
+                                    <MatListItemText Style="padding-left:0.5em">@i18n["Extras"]</MatListItemText>
                                 </MatListItem>
                             </MatRipple>
                             <MatRipple Class="navmenu-mat-ripple" Color="@MatRippleColor.Default">
                                 <MatListItem Class="@((Index == 4) ? "bg-primary-color text-white" : "")" Style="margin-left:0;margin-right:0"
-                                             href=""
-                                             Match="NavLinkMatch.All"
+                                             Href="info"
                                              @onclick="@((e) => ButtonClicked(4))">
-                                    <MatIcon Icon="@MatIconNames.Exit_to_app"></MatIcon>
-                                    <MatListItemText Style="padding-left:0.5em">@i18n["Logout"]</MatListItemText>
+                                    <MatIcon Icon="@MatIconNames.Error_outline" Style="transform: rotate(180deg)"></MatIcon>
+                                    <MatListItemText Style="padding-left:0.5em">@i18n["info"]</MatListItemText>
                                 </MatListItem>
                             </MatRipple>
                         </MatList>
     }
 
     protected override void OnInitialized() {
+        base.OnInitialized();
         AppState.OnChange += StateHasChanged;
         NavigationManager.LocationChanged += LocationChanged;
         PageHistoryManager.AddPageToHistory(NavigationManager.Uri);
-        base.OnInitialized();
+        locUrl = i18n.GetString(NavigationManager.Uri.Replace(NavigationManager.BaseUri, ""));
+        StateHasChanged();
     }
 
     private void ButtonClicked() {
     private void ButtonClicked(int _Index) {
         Index = _Index;
         ButtonClicked();
-        if (_Index == 4) {
-            AppState.LoggedIn = false;
-        }
     }
 
     private void ButtonBackClicked() {
         } else if (e.Location.Contains("account")) {
             Index = 2;
         } else if (e.Location.Contains("info")) {
-            Index = 3;
-        } else {
             Index = 4;
+        } else {
+            Index = 3;
         }
         StateHasChanged();
     }
         string baseUri = NavigationManager.BaseUri;
         string delta = uri.Replace(baseUri, "");
 
-        if (delta == null || delta.Equals("")) {
+        if (delta.Equals("caritas_services")) {
+            Index = 1;
+        } else if (delta.Equals("account")) {
+            Index = 2;
+        } else if (delta.Equals("info")) {
             Index = 4;
-            return false;
         } else {
-            if (delta.Equals("caritas_services")) {
-                Index = 1;
-            } else if (delta.Equals("account")) {
-                Index = 2;
-            } else if (delta.Equals("info")) {
-                Index = 3;
-            }
-            return true;
+            Index = 3;
         }
+        return true;
     }
 
     private bool BackButtonDisabled() {

Shared/ResourceFiles/Resources.de.resx

   <data name="Error.PhotoOrPictureToBig.Title" xml:space="preserve">
     <value>Bilddatei zu gross!</value>
   </data>
+  <data name="Extras" xml:space="preserve">
+    <value>Extras</value>
+  </data>
   <data name="Female" xml:space="preserve">
     <value>Frau</value>
   </data>
   <data name="Warning.Masterdata.Title" xml:space="preserve">
     <value>Stammdaten nicht verfügbar!</value>
   </data>
+  <data name="Warning.NoConnection.Msg" xml:space="preserve">
+    <value>Die Meldung konnte nicht übertragen werde. Sie wurde gespeichert und wird sobald wie möglich übertragen.</value>
+  </data>
+  <data name="Warning.NoConnection.Title" xml:space="preserve">
+    <value>Keine Verbindung zum Internet!</value>
+  </data>
   <data name="Warning.Nominatim.Msg" xml:space="preserve">
     <value>Die Adresse konnte beim Aufrufen des Nominatim-Dienstes nicht aufgelöst werden. Bitte geben Sie die Straße und Postleitzahl/Ort manuell ein.</value>
   </data>

Shared/ResourceFiles/Resources.fr.resx

   <data name="Error.PhotoOrPictureToBig.Title" xml:space="preserve">
     <value>La taille de la photo est trop grande!</value>
   </data>
+  <data name="Extras" xml:space="preserve">
+    <value>Extras</value>
+  </data>
   <data name="Female" xml:space="preserve">
     <value>Madame</value>
   </data>
   <data name="Warning.Masterdata.Title" xml:space="preserve">
     <value>Les données de base ne sont pas disponibles!</value>
   </data>
+  <data name="Warning.NoConnection.Msg" xml:space="preserve">
+    <value>Le message n'a pas pu être transmis. Il a été sauvegardé et sera transmis dès que possible.</value>
+  </data>
+  <data name="Warning.NoConnection.Title" xml:space="preserve">
+    <value>Pas de connexion à l'internet !</value>
+  </data>
   <data name="Warning.Nominatim.Msg" xml:space="preserve">
     <value>L'adresse n'a pas pu être résolue en invoquant le service Nominatim. Veuillez saisir l'adresse en indiquant la rue et le code postal/ville.</value>
   </data>

Shared/ResourceFiles/Resources.it.resx

   <data name="Error.PhotoOrPictureToBig.Title" xml:space="preserve">
     <value>Dimensione dell'immagine troppo grande!</value>
   </data>
+  <data name="Extras" xml:space="preserve">
+    <value>Extras</value>
+  </data>
   <data name="Female" xml:space="preserve">
     <value>Signora</value>
   </data>
   <data name="Warning.Masterdata.Title" xml:space="preserve">
     <value>Dati anagrafici non disponibili!</value>
   </data>
+  <data name="Warning.NoConnection.Msg" xml:space="preserve">
+    <value>Il messaggio non può essere trasmesso. È stato salvato e sarà trasmesso al più presto.</value>
+  </data>
+  <data name="Warning.NoConnection.Title" xml:space="preserve">
+    <value>Nessuna connessione a Internet!</value>
+  </data>
   <data name="Warning.Nominatim.Msg" xml:space="preserve">
     <value>L'indirizzo non può essere risolto invocando il servizio Nominatim. Si prega di digitare la via e CAP/città.</value>
   </data>

Shared/ResourceFiles/Resources.resx

   <data name="Error.PhotoOrPictureToBig.Title" xml:space="preserve">
     <value>Size of picture to big!</value>
   </data>
+  <data name="Extras" xml:space="preserve">
+    <value>Extras</value>
+  </data>
   <data name="Female" xml:space="preserve">
     <value>Madam</value>
   </data>
   <data name="Warning.Masterdata.Title" xml:space="preserve">
     <value>Master data not available!</value>
   </data>
+  <data name="Warning.NoConnection.Msg" xml:space="preserve">
+    <value>The report could not be transmitted. It was stored and will be transmitted as soon as possible!</value>
+  </data>
+  <data name="Warning.NoConnection.Title" xml:space="preserve">
+    <value>No connection to the internet!</value>
+  </data>
   <data name="Warning.Nominatim.Msg" xml:space="preserve">
     <value>The address could not be resolved invoking Nominatim service. Please type in the address street and zip/town.</value>
   </data>

Shared/Services/BicycleRestService.cs

 using cwebplusApp.Shared.Models;
-using Microsoft.AspNetCore.Components;
 using Microsoft.Extensions.Configuration;
 using Newtonsoft.Json;
 using System;
         private static readonly string VERSION = "v1";
 
         private HttpClient httpClient;
-        [Inject]
         public IConfiguration Configuration { get; set; }
+        public OnlineStatusProvider OnlineStatusProvider { get; set; }
 
-        public void Initialize(IConfiguration configuration) {
+        public void Initialize(IConfiguration configuration, OnlineStatusProvider onlineStatusProvider) {
             this.Configuration = configuration;
+            this.OnlineStatusProvider = onlineStatusProvider;
             string hostBaseUrl = Configuration.GetValue<string>("host_base_url");
             if (!String.IsNullOrEmpty(hostBaseUrl)) {
                 this.httpClient = new HttpClient { BaseAddress = new Uri(hostBaseUrl) };
         }
 
         protected async Task<ReportResponse> SendReport(Report report, string subResourceUrl) {
-            if (httpClient != null) {
-                if (!String.IsNullOrEmpty(subResourceUrl)) {
-                    string reportJson = JsonConvert.SerializeObject(report);
-                    HttpContent content = new StringContent(reportJson, Encoding.UTF8, "application/json");
-                    HttpResponseMessage httpResult = await httpClient.PostAsync(string.Format(subResourceUrl, VERSION, CultureInfo.CurrentCulture.TwoLetterISOLanguageName), content);
-                    string msg = await httpResult.Content.ReadAsStringAsync();
-                    ReportResponse response = JsonConvert.DeserializeObject<ReportResponse>(msg);
-                    response.StatusCode = httpResult.StatusCode;
-                    return response;
+            if (OnlineStatusProvider.Online) {
+                if (httpClient != null) {
+                    if (!String.IsNullOrEmpty(subResourceUrl)) {
+                        string reportJson = JsonConvert.SerializeObject(report);
+                        HttpContent content = new StringContent(reportJson, Encoding.UTF8, "application/json");
+                        HttpResponseMessage httpResult = await httpClient.PostAsync(string.Format(subResourceUrl, VERSION, CultureInfo.CurrentCulture.TwoLetterISOLanguageName), content);
+                        string msg = await httpResult.Content.ReadAsStringAsync();
+                        ReportResponse response = JsonConvert.DeserializeObject<ReportResponse>(msg);
+                        response.StatusCode = httpResult.StatusCode;
+                        return response;
+                    }
                 }
+                throw new HttpRequestException("HTTP client not initialized!");
+            } else {
+                //TODO: Save to app storage
+                return null;
             }
-            throw new HttpRequestException("HTTP client not initialized!");
         }
     }
 }

Shared/Services/IBicycleRestService.cs

 namespace cwebplusApp.Shared.Services {
     public interface IBicycleRestService {
 
-        void Initialize(IConfiguration configuration);
+        void Initialize(IConfiguration configuration, OnlineStatusProvider onlineStatusProvider);
 
         Task<List<ColorItem>> GetColors();
 

wwwroot/service-worker.js

     'images/caritas_logo.png',
     'images/integrate_logo.png',
     'images/done.png',
+    'images/failure.png',
+    'images/warning.png',
     'images/icon_camera.png',
     'images/icon_driveupload.png',
     'images/icon_location.png',
 });
 
 // fetch events (appsettings are always first fetched from network)
-self.addEventListener('fetch', event => {
-    if (event.request.url.endsWith(appsettings_url)) {
-        fetch(event.request).then(function (response) {
-            return caches.open(staticCacheName).then(function (cache) {
-                console.log('update cache');
-                cache.put(event.request, response.clone());
-                return response;
-            });
-        }).catch(function () {
-            var cr;
-            console.log('catch network fetch failure 1');
-            event.waitUntil(
-                caches.match(event.request).then(cacheRes => {
-                    console.log('catch network fetch failure 2');
-                    console.log(cacheRes);
-                    cr = cacheRes;
-                })
-            );
-            console.log('catch network fetch failure 3');
-            console.log(cr);
-            return cr;
-            //fromCache(event.request);
-        })
-    } else {
-        event.respondWith(
-            caches.match(event.request).then(cacheRes => {
-                return cacheRes || fetch(event.request);
-            })
-        );
-    }
-});
-
-
-//self.addEventListener('fetch', event => {
-//    if (event.request.url.endsWith(appsettings_url)) {
-//        networkOrCache(event.request);
-//    } else {
-//        event.respondWith(
-//            caches.match(event.request).then(cacheRes => {
-//                return cacheRes || fetch(event.request);
-//            })
-//        );
-//    }
-//});
-
+self.addEventListener('fetch', function (event) {
+    event.respondWith(networkOrCache(event.request).catch(function () {
+    }));
+})
 
-//function networkOrCache(request) {
-//    return fetch(request).then(function (response) {
-//        caches.open(staticCacheName).then(function (cache) {
-//            console.log('update cache');
-//            cache.put(request, response.clone());
-//        });
-//        return response.ok ? response : fromCache(request);
-//    //}).catch(function () {
-//    //    return fromCache(request);
-//    });
-//}
+function networkOrCache(request) {
+    return fetch(request).then(function (response) {
+        return response.ok ? response : fromCache(request);
+    }).catch(function () {
+        return fromCache(request);
+    });
+}
 
-//function fromCache(request) {
-//    return caches.open(staticCacheName).then(function (cache) {
-//        return cache.match(request).then(function (matching) {
-//            return matching || Promise.reject('request-not-in-cache');
-//        });
-//    });
-//}
+function fromCache(request) {
+    return caches.open(staticCacheName).then(function (cache) {
+        return cache.match(request).then(function (matching) {
+            return matching || Promise.reject('request-not-in-cache');
+        });
+    });
+}