Auth System

FoodsharingSiegen.Server/Auth/LocalStorageService.cs

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+using System.Text.Json;
+using Microsoft.JSInterop;
+
+namespace FoodsharingSiegen.Server.Service
+{
+    /// <summary>
+    /// The local storage service class (a. beging, 02.04.2022)
+    /// </summary>
+    public class LocalStorageService
+    {
+        #region Private Fields
+
+        /// <summary>
+        /// The js runtime
+        /// </summary>
+        private readonly IJSRuntime _jsRuntime;
+
+        #endregion
+
+        #region Setup/Teardown
+
+        /// <summary>
+        ///     Constructor
+        /// </summary>
+        /// <param name="jsRuntime"></param>
+        public LocalStorageService(IJSRuntime jsRuntime) => _jsRuntime = jsRuntime;
+
+        #endregion
+
+        #region Public Method GetItem
+
+        /// <summary>
+        ///     Ein Item aus dem LocalStorage laden
+        /// </summary>
+        /// <param name="key">Der Key des Items</param>
+        /// <typeparam name="T">Typ des Item</typeparam>
+        /// <returns></returns>
+        public async Task<T?> GetItem<T>(string key)
+        {
+            var json = await _jsRuntime.InvokeAsync<string>("localStorage.getItem", key);
+
+            if (json == null)
+                return default;
+
+            return JsonSerializer.Deserialize<T>(json);
+        }
+
+        #endregion
+
+        #region Public Method RemoveItem
+        
+        /// <summary>
+        ///     Ein Item aus dem LocalStorage löschen
+        /// </summary>
+        /// <param name="key">Der Key des Items</param>
+        public async Task RemoveItem(string key)
+        {
+            await _jsRuntime.InvokeVoidAsync("localStorage.removeItem", key);
+        }
+        
+        #endregion
+
+        #region Public Method SetItem
+        
+        /// <summary>
+        ///     Ein Item in den LocalStorage schreiben
+        /// </summary>
+        /// <param name="key">Der Key des Items</param>
+        /// <param name="value">Das Item</param>
+        /// <typeparam name="T">Typ des Item</typeparam>
+        public async Task SetItem<T>(string key, T value)
+        {
+            await _jsRuntime.InvokeVoidAsync("localStorage.setItem", key, JsonSerializer.Serialize(value));
+        }
+
+        #endregion
+    }
+}