From b7ba95b716e34dc9414d776b16bc9247f787a88a Mon Sep 17 00:00:00 2001
From: Andre Beging <a.beging@eas-solutions.de>
Date: Wed, 2 Apr 2025 07:47:33 +0200
Subject: [PATCH] Store Filter between pages

---
 FoodsharingSiegen.Contracts/StorageKeys.cs    | 11 +++++++-
 .../BaseClasses/FsBase.cs                     |  7 +++++
 .../Pages/Prospects.razor                     |  2 +-
 .../Pages/Prospects.razor.cs                  | 27 +++++++++++++++----
 .../Pages/ProspectsAll.razor                  |  2 +-
 .../Pages/ProspectsAll.razor.cs               | 20 ++++++++++++++
 .../Pages/ProspectsDone.razor                 |  2 +-
 .../Pages/ProspectsDone.razor.cs              | 20 ++++++++++++++
 .../Pages/ProspectsVerify.razor               |  2 +-
 .../Pages/ProspectsVerify.razor.cs            | 21 ++++++++++++++-
 10 files changed, 103 insertions(+), 11 deletions(-)

diff --git a/FoodsharingSiegen.Contracts/StorageKeys.cs b/FoodsharingSiegen.Contracts/StorageKeys.cs
index dc09f46..c3334ad 100644
--- a/FoodsharingSiegen.Contracts/StorageKeys.cs
+++ b/FoodsharingSiegen.Contracts/StorageKeys.cs
@@ -5,9 +5,18 @@ namespace FoodsharingSiegen.Contracts
     /// </summary>
     public static class StorageKeys
     {
+        #region Constants
+
         /// <summary>
-        /// The token key
+        ///     Represents the storage key used for prospect filtering preferences.
+        /// </summary>
+        public const string ProspectFilter = "ProspectFilter";
+
+        /// <summary>
+        ///     The token key
         /// </summary>
         public const string TokenKey = "_token";
+
+        #endregion
     }
 }
\ No newline at end of file
diff --git a/FoodsharingSiegen.Server/BaseClasses/FsBase.cs b/FoodsharingSiegen.Server/BaseClasses/FsBase.cs
index f7120ad..458357a 100644
--- a/FoodsharingSiegen.Server/BaseClasses/FsBase.cs
+++ b/FoodsharingSiegen.Server/BaseClasses/FsBase.cs
@@ -3,6 +3,7 @@ using FoodsharingSiegen.Contracts.Entity;
 using FoodsharingSiegen.Contracts.Model;
 using FoodsharingSiegen.Server.Auth;
 using FoodsharingSiegen.Server.Data.Service;
+using FoodsharingSiegen.Server.Service;
 using Microsoft.AspNetCore.Components;
 using Microsoft.Extensions.Options;
 
@@ -31,6 +32,12 @@ namespace FoodsharingSiegen.Server.BaseClasses
         [Inject]
         protected AuthService AuthService { get; set; } = null!;
 
+        /// <summary>
+        ///     Gets or sets the service that interacts with the browser's local storage.
+        /// </summary>
+        [Inject]
+        protected LocalStorageService LocalStorageService { get; set; } = null!;
+
         /// <summary>
         ///     Gets or sets the modal service for handling modals within the application
         /// </summary>
diff --git a/FoodsharingSiegen.Server/Pages/Prospects.razor b/FoodsharingSiegen.Server/Pages/Prospects.razor
index 78b736d..1e4370a 100644
--- a/FoodsharingSiegen.Server/Pages/Prospects.razor
+++ b/FoodsharingSiegen.Server/Pages/Prospects.razor
@@ -26,7 +26,7 @@
 }
 
 <hr/>
-<ProspectFilterControl @bind-Filter="Filter" StateFilter="ProspectStateFilter.OnBoarding"></ProspectFilterControl>
+<ProspectFilterControl Filter="Filter" FilterChanged="FilterChangedAsync" StateFilter="ProspectStateFilter.OnBoarding"></ProspectFilterControl>
 <hr />
 <ProspectGrid
     Prospects="filterList"
diff --git a/FoodsharingSiegen.Server/Pages/Prospects.razor.cs b/FoodsharingSiegen.Server/Pages/Prospects.razor.cs
index 5f7812b..b13f13f 100644
--- a/FoodsharingSiegen.Server/Pages/Prospects.razor.cs
+++ b/FoodsharingSiegen.Server/Pages/Prospects.razor.cs
@@ -1,8 +1,10 @@
+using FoodsharingSiegen.Contracts;
 using FoodsharingSiegen.Contracts.Entity;
 using FoodsharingSiegen.Contracts.Enums;
 using FoodsharingSiegen.Contracts.Model;
 using FoodsharingSiegen.Server.Data.Service;
 using FoodsharingSiegen.Server.Dialogs;
+using FoodsharingSiegen.Server.Service;
 using Microsoft.AspNetCore.Components;
 
 namespace FoodsharingSiegen.Server.Pages
@@ -14,17 +16,14 @@ namespace FoodsharingSiegen.Server.Pages
     {
         #region Dependencies
 
-        /// <summary>
-        ///     Gets or sets the value of the prospect service (ab)
-        /// </summary>
         [Inject]
-        public ProspectService ProspectService { get; set; } = null!;
+        private ProspectService ProspectService { get; set; } = null!;
 
         /// <summary>
         ///     Gets or sets the value of the user service (ab)
         /// </summary>
         [Inject]
-        public UserService UserService { get; set; } = null!;
+        private UserService UserService { get; set; } = null!;
 
         #endregion
 
@@ -44,6 +43,9 @@ namespace FoodsharingSiegen.Server.Pages
         /// <inheritdoc />
         protected override async Task InitializeDataAsync()
         {
+            var filter = await LocalStorageService.GetItem<ProspectFilter>(StorageKeys.ProspectFilter);
+            if (filter != null) Filter = filter;
+            
             // Load prospects
             await LoadProspects();
         }
@@ -63,6 +65,21 @@ namespace FoodsharingSiegen.Server.Pages
 
         #endregion
 
+        #region Private Method FilterChangedAsync
+
+        /// <summary>
+        ///     Updates the current filter with the specified ProspectFilter object.
+        /// </summary>
+        /// <param name="arg">The ProspectFilter object containing the updated filter criteria.</param>
+        /// <returns>A task that represents the asynchronous operation.</returns>
+        private async Task FilterChangedAsync(ProspectFilter arg)
+        {
+            Filter = arg;
+            await LocalStorageService.SetItem(StorageKeys.ProspectFilter, Filter);
+        }
+
+        #endregion
+
         #region Private Method LoadProspects
 
         /// <summary>
diff --git a/FoodsharingSiegen.Server/Pages/ProspectsAll.razor b/FoodsharingSiegen.Server/Pages/ProspectsAll.razor
index 6051744..83f6222 100644
--- a/FoodsharingSiegen.Server/Pages/ProspectsAll.razor
+++ b/FoodsharingSiegen.Server/Pages/ProspectsAll.razor
@@ -17,7 +17,7 @@
 }
 
 <hr/>
-<ProspectFilterControl @bind-Filter="Filter" StateFilter="ProspectStateFilter.All"></ProspectFilterControl>
+<ProspectFilterControl Filter="Filter" FilterChanged="FilterChangedAsync" StateFilter="ProspectStateFilter.All"></ProspectFilterControl>
 <hr />
 <ProspectGrid
     Prospects="filterList"
diff --git a/FoodsharingSiegen.Server/Pages/ProspectsAll.razor.cs b/FoodsharingSiegen.Server/Pages/ProspectsAll.razor.cs
index 1aec9f1..62c5753 100644
--- a/FoodsharingSiegen.Server/Pages/ProspectsAll.razor.cs
+++ b/FoodsharingSiegen.Server/Pages/ProspectsAll.razor.cs
@@ -1,3 +1,4 @@
+using FoodsharingSiegen.Contracts;
 using FoodsharingSiegen.Contracts.Entity;
 using FoodsharingSiegen.Contracts.Helper;
 using FoodsharingSiegen.Contracts.Model;
@@ -46,12 +47,31 @@ namespace FoodsharingSiegen.Server.Pages
         {
             if(!CurrentUser.IsAdmin()) NavigationManager.NavigateTo("/");
             
+            // Load Filter
+            var filter = await LocalStorageService.GetItem<ProspectFilter>(StorageKeys.ProspectFilter);
+            if (filter != null) Filter = filter;
+            
             // Load prospects
             await LoadProspects();
         }
 
         #endregion
 
+        #region Private Method FilterChangedAsync
+
+        /// <summary>
+        ///     Updates the current filter with the specified ProspectFilter object.
+        /// </summary>
+        /// <param name="arg">The ProspectFilter object containing the updated filter criteria.</param>
+        /// <returns>A task that represents the asynchronous operation.</returns>
+        private async Task FilterChangedAsync(ProspectFilter arg)
+        {
+            Filter = arg;
+            await LocalStorageService.SetItem(StorageKeys.ProspectFilter, Filter);
+        }
+
+        #endregion
+        
         #region Private Method LoadProspects
 
         /// <summary>
diff --git a/FoodsharingSiegen.Server/Pages/ProspectsDone.razor b/FoodsharingSiegen.Server/Pages/ProspectsDone.razor
index 0a5fbbf..e52c6db 100644
--- a/FoodsharingSiegen.Server/Pages/ProspectsDone.razor
+++ b/FoodsharingSiegen.Server/Pages/ProspectsDone.razor
@@ -17,7 +17,7 @@
 }
 
 <hr />
-<ProspectFilterControl @bind-Filter="Filter" StateFilter="ProspectStateFilter.Completed"></ProspectFilterControl>
+<ProspectFilterControl Filter="Filter" FilterChanged="FilterChangedAsync" StateFilter="ProspectStateFilter.Completed"></ProspectFilterControl>
 <hr />
 <ProspectGrid
     Prospects="filterList"
diff --git a/FoodsharingSiegen.Server/Pages/ProspectsDone.razor.cs b/FoodsharingSiegen.Server/Pages/ProspectsDone.razor.cs
index 20bc792..65655e4 100644
--- a/FoodsharingSiegen.Server/Pages/ProspectsDone.razor.cs
+++ b/FoodsharingSiegen.Server/Pages/ProspectsDone.razor.cs
@@ -1,3 +1,4 @@
+using FoodsharingSiegen.Contracts;
 using FoodsharingSiegen.Contracts.Entity;
 using FoodsharingSiegen.Contracts.Enums;
 using FoodsharingSiegen.Contracts.Model;
@@ -37,11 +38,30 @@ namespace FoodsharingSiegen.Server.Pages
         /// <inheritdoc />
         protected override async Task InitializeDataAsync()
         {
+            // Load Filter
+            var filter = await LocalStorageService.GetItem<ProspectFilter>(StorageKeys.ProspectFilter);
+            if (filter != null) Filter = filter;
+            
             await LoadProspects();
         }
 
         #endregion
 
+        #region Private Method FilterChangedAsync
+
+        /// <summary>
+        ///     Updates the current filter with the specified ProspectFilter object.
+        /// </summary>
+        /// <param name="arg">The ProspectFilter object containing the updated filter criteria.</param>
+        /// <returns>A task that represents the asynchronous operation.</returns>
+        private async Task FilterChangedAsync(ProspectFilter arg)
+        {
+            Filter = arg;
+            await LocalStorageService.SetItem(StorageKeys.ProspectFilter, Filter);
+        }
+
+        #endregion
+
         #region Private Method LoadProspects
 
         /// <summary>
diff --git a/FoodsharingSiegen.Server/Pages/ProspectsVerify.razor b/FoodsharingSiegen.Server/Pages/ProspectsVerify.razor
index 829f783..2c6e686 100644
--- a/FoodsharingSiegen.Server/Pages/ProspectsVerify.razor
+++ b/FoodsharingSiegen.Server/Pages/ProspectsVerify.razor
@@ -17,7 +17,7 @@
 }
 
 <hr/>
-<ProspectFilterControl @bind-Filter="Filter" StateFilter="ProspectStateFilter.Verification"></ProspectFilterControl>
+<ProspectFilterControl Filter="Filter" FilterChanged="FilterChangedAsync" StateFilter="ProspectStateFilter.Verification"></ProspectFilterControl>
 <hr />
 <ProspectGrid
     Prospects="filterList"
diff --git a/FoodsharingSiegen.Server/Pages/ProspectsVerify.razor.cs b/FoodsharingSiegen.Server/Pages/ProspectsVerify.razor.cs
index cc2253c..3501bac 100644
--- a/FoodsharingSiegen.Server/Pages/ProspectsVerify.razor.cs
+++ b/FoodsharingSiegen.Server/Pages/ProspectsVerify.razor.cs
@@ -1,8 +1,8 @@
+using FoodsharingSiegen.Contracts;
 using FoodsharingSiegen.Contracts.Entity;
 using FoodsharingSiegen.Contracts.Enums;
 using FoodsharingSiegen.Contracts.Model;
 using FoodsharingSiegen.Server.Data.Service;
-using FoodsharingSiegen.Server.Dialogs;
 using Microsoft.AspNetCore.Components;
 
 namespace FoodsharingSiegen.Server.Pages
@@ -44,12 +44,31 @@ namespace FoodsharingSiegen.Server.Pages
         /// <inheritdoc />
         protected override async Task InitializeDataAsync()
         {
+            // Load Filter
+            var filter = await LocalStorageService.GetItem<ProspectFilter>(StorageKeys.ProspectFilter);
+            if (filter != null) Filter = filter;
+
             // Load prospects
             await LoadProspects();
         }
 
         #endregion
 
+        #region Private Method FilterChangedAsync
+
+        /// <summary>
+        ///     Updates the current filter with the specified ProspectFilter object.
+        /// </summary>
+        /// <param name="arg">The ProspectFilter object containing the updated filter criteria.</param>
+        /// <returns>A task that represents the asynchronous operation.</returns>
+        private async Task FilterChangedAsync(ProspectFilter arg)
+        {
+            Filter = arg;
+            await LocalStorageService.SetItem(StorageKeys.ProspectFilter, Filter);
+        }
+
+        #endregion
+
         #region Private Method LoadProspects
 
         /// <summary>