Add important notice

Author: atsamd21

Components/Pages/Market.razor

@@ -1,5 +1,12 @@
 @page "/Market"
 
+<Modal Title="Notice" @bind-IsOpen="ShowNotice" OkButtonText="I understand" OnOkPressed="AcknowledgeNotice" ModalButtonOptions="ModalButtonOptions.OK">
+    It is important that you do not force stop the app whilst confirming payment receipt or sent. In rare cases you may be required to use a desktop computer to recover the trade.
+    <br />
+    <br />
+    Sometimes updating trades can take a while due to tor so it's best to wait or let it time out and retry.
+</Modal>
+
 <div class="market-main">
     <div class="year-price-container">
         <div class="dropdowns">

Components/Pages/Market.razor.cs

@@ -67,6 +67,8 @@ public int Year
     public int CurrentPage { get; set; }
     public int PageCount { get; set; }
 
+    public bool ShowNotice { get; set; }
+
     [Inject]
     public ILocalStorageService LocalStorage { get; set; } = default!;
     [Inject]
@@ -124,6 +126,8 @@ protected override async Task OnInitializedAsync()
 
                 PreferredCurrency = await LocalStorage.GetItemAsStringAsync("preferredCurrency") ?? CurrencyCultureInfo.FallbackCurrency;
 
+                ShowNotice = !Helpers.Preferences.Get<bool>(Helpers.Preferences.InitialNoticeAcknowledged);
+
                 try
                 {
                     CurrentMarketPrice = BalanceSingleton.MarketPriceInfoDictionary[PreferredCurrency].ToString("0.00");
@@ -157,6 +161,11 @@ protected override async Task OnInitializedAsync()
         await base.OnInitializedAsync();
     }
 
+    private void AcknowledgeNotice()
+    {
+        Helpers.Preferences.Set(Helpers.Preferences.InitialNoticeAcknowledged, true);
+    }
+
     private async void HandleBalanceFetch(bool isFetching)
     {
         await InvokeAsync(() => {

Helpers/Preferences.cs

@@ -15,6 +15,7 @@ public static class Preferences
     public const string IsToggled = "is-toggled";
     public const string OfferPaymentType = "offer-payment-type";
     public const string CustomXmrNode = "custom-xmr-node";
+    public const string InitialNoticeAcknowledged = "initial-notice-acknowledged";
 
 #if ANDROID
     public static void Set<T>(string key, T? data)