New: User Search and User-Contact UI and Service

Client/Modules/SZUAbsolventenverein.Module.PremiumArea/UserSearch.razor

@@ -0,0 +1,107 @@
+@using SZUAbsolventenverein.Module.PremiumArea.Services
+@using Oqtane.Models
+@namespace SZUAbsolventenverein.Module.PremiumArea
+@inherits ModuleBase
+@inject IUserContactService ContactService
+@inject NavigationManager NavigationManager
+
+@if (Oqtane.Security.UserSecurity.IsAuthorized(PageState.User, RoleNames.Admin) || Oqtane.Security.UserSecurity.IsAuthorized(PageState.User, "Premium Member"))
+{
+    <h3>Mitglieder Suche</h3>
+
+    <div class="input-group mb-3">
+        <input type="text" class="form-control" placeholder="Mitglieder suchen (min 3 Zeichen)..." @bind="_query" @onkeyup="@(e => { if (e.Key == "Enter") Search(); })" />
+        <button class="btn btn-primary" @onclick="Search">Suchen</button>
+    </div>
+
+    @if (_searchResults != null)
+    {
+        @if (_searchResults.Count == 0)
+        {
+            <p class="text-muted">Keine Mitglieder gefunden.</p>
+        }
+        else
+        {
+            <ul class="list-group">
+                @foreach (var user in _searchResults)
+                {
+                    <li class="list-group-item d-flex justify-content-between align-items-center">
+                        <span>
+                            <strong>@user.DisplayName</strong> <small class="text-muted">(@user.Username)</small>
+                        </span>
+                        <button class="btn btn-sm btn-outline-info" @onclick="@(() => InitContact(user))">Kontaktieren</button>
+                    </li>
+                }
+            </ul>
+        }
+    }
+
+    @if (_selectedUser != null)
+    {
+        <div class="card mt-4">
+            <div class="card-header">Nachricht an: @_selectedUser.DisplayName</div>
+            <div class="card-body">
+                <div class="mb-3">
+                    <label>Nachricht</label>
+                    <textarea class="form-control" rows="3" @bind="_messageBody"></textarea>
+                </div>
+                <button class="btn btn-primary" @onclick="Send">Nachricht senden</button>
+                <button class="btn btn-secondary" @onclick="@(() => _selectedUser = null)">Abbrechen</button>
+
+                @if (!string.IsNullOrEmpty(_statusMsg))
+                {
+                    <div class="alert alert-info mt-2">@_statusMsg</div>
+                }
+            </div>
+        </div>
+    }
+}
+else
+{
+    <div class="alert alert-warning">
+        Sie müssen Premium Kunde sein um diese Funktion zu nutzen.
+    </div>
+}
+
+@code {
+    public override SecurityAccessLevel SecurityAccessLevel => SecurityAccessLevel.View;
+
+    private string _query;
+    private List<User> _searchResults;
+    private User _selectedUser;
+    private string _messageBody;
+    private string _statusMsg;
+
+    private async Task Search()
+    {
+        if (string.IsNullOrWhiteSpace(_query) || _query.Length < 3) return;
+        _searchResults = await ContactService.SearchUsersAsync(_query, ModuleState.ModuleId);
+        _selectedUser = null;
+    }
+
+    private void InitContact(User user)
+    {
+        _selectedUser = user;
+        _messageBody = "";
+        _statusMsg = "";
+    }
+
+    private async Task Send()
+    {
+        if (string.IsNullOrWhiteSpace(_messageBody)) return;
+        
+        try
+        {
+            await ContactService.SendMessageAsync(_selectedUser.UserId, _messageBody, ModuleState.ModuleId);
+            _statusMsg = "Message Sent Successully!";
+            // Reset after delay or allow closing
+            await Task.Delay(2000);
+            _selectedUser = null;
+            StateHasChanged(); 
+        }
+        catch (Exception ex)
+        {
+            _statusMsg = "Error sending message: " + ex.Message;
+        }
+    }
+}