Added a mail template editor

Moonlight/App/Models/Misc/MailTemplate.cs

@@ -0,0 +1,9 @@
+using Moonlight.App.Helpers.Files;
+
+namespace Moonlight.App.Models.Misc;
+
+public class MailTemplate // This is just for the blazor table at /admin/system/mail
+{
+    public string Name { get; set; } = "";
+    public FileData File { get; set; }
+}

Moonlight/Shared/Components/Navigations/AdminSystemNavigation.razor

@@ -44,6 +44,11 @@
                     <TL>Configuration</TL>
                 </a>
             </li>
+            <li class="nav-item mt-2">
+                <a class="nav-link text-active-primary ms-0 me-10 py-5 @(Index == 9 ? "active" : "")" href="/admin/system/mail">
+                    <TL>Mail</TL>
+                </a>
+            </li>
         </ul>
     </div>
 </div>

Moonlight/Shared/Views/Admin/Sys/Mail.razor

@@ -0,0 +1,149 @@
+@page "/admin/system/mail"
+
+@using Moonlight.Shared.Components.Navigations
+@using Moonlight.Shared.Components.FileManagerPartials
+@using Moonlight.App.Helpers.Files
+@using Moonlight.App.Helpers
+@using BlazorTable
+@using Moonlight.App.Models.Misc
+@using Moonlight.App.Services
+@using Moonlight.App.Services.Interop
+
+@inject SmartTranslateService SmartTranslateService
+@inject ToastService ToastService
+@inject AlertService AlertService
+
+<OnlyAdmin>
+    <AdminSystemNavigation Index="9"/>
+
+    <LazyLoader @ref="LazyLoader" Load="Load">
+        @if (CurrentMailTemplate == null)
+        {
+            <div class="card">
+                <div class="card-header">
+                    <span class="card-title">
+                        <TL>Mail templates</TL>
+                    </span>
+                    <div class="card-toolbar">
+                        <WButton Text="@(SmartTranslateService.Translate("New mail template"))"
+                                 CssClasses="btn-sm btn-success"
+                                 OnClick="CreateNewMailTemplate">
+                        </WButton>
+                    </div>
+                </div>
+                <div class="card-body">
+                    <div class="table-responsive">
+                        <Table TableItem="MailTemplate" Items="MailTemplateFiles" PageSize="25" TableClass="table table-row-bordered table-row-gray-100 align-middle gs-0 gy-3" TableHeadClass="fw-bold text-muted">
+                            <Column TableItem="MailTemplate" Title="@(SmartTranslateService.Translate("Name"))" Field="@(x => x.Name)" Sortable="true" Filterable="true">
+                                <Template>
+                                    @{
+                                        var name = context.Name.Replace(Path.GetExtension(context.Name), "");
+                                    }
+
+                                    <span>@(name)</span>
+                                </Template>
+                            </Column>
+                            <Column TableItem="MailTemplate" Title="" Field="@(x => x.Name)" Filterable="false" Sortable="false">
+                                <Template>
+                                    <div class="text-end">
+                                        <WButton Text="@(SmartTranslateService.Translate("Edit"))"
+                                                 OnClick="() => EditTemplate(context)">
+                                        </WButton>
+                                        <DeleteButton OnClick="() => DeleteTemplate(context)"
+                                                      Confirm="true">
+                                        </DeleteButton>
+                                    </div>
+                                </Template>
+                            </Column>
+                            <Pager ShowPageNumber="true" ShowTotalCount="true"/>
+                        </Table>
+                    </div>
+                </div>
+            </div>
+        }
+        else
+        {
+            <FileEditor Language="html" 
+                        HideControls="false" 
+                        InitialData="@(CurrentMailTemplateContent)" 
+                        OnCancel="OnCancelTemplateEdit"
+                        OnSubmit="OnSubmitTemplateEdit"/>
+        }
+    </LazyLoader>
+</OnlyAdmin>
+
+@code
+{
+    private MailTemplate[] MailTemplateFiles;
+    private FileAccess FileAccess;
+    private LazyLoader LazyLoader;
+    
+    private MailTemplate? CurrentMailTemplate;
+    private string CurrentMailTemplateContent;
+
+    private async Task Load(LazyLoader arg)
+    {
+        FileAccess = new HostFileAccess(PathBuilder.Dir("storage"));
+
+        await FileAccess.Cd("resources");
+        await FileAccess.Cd("mail");
+
+        MailTemplateFiles = (await FileAccess.Ls())
+            .Where(x => x.IsFile)
+            .Select(x => new MailTemplate()
+            {
+                Name = x.Name,
+                File = x
+            })
+            .ToArray();
+    }
+
+    private async Task EditTemplate(MailTemplate mailTemplate)
+    {
+        CurrentMailTemplate = mailTemplate;
+        
+        CurrentMailTemplateContent = await FileAccess
+            .Read(CurrentMailTemplate.File);
+        
+        await InvokeAsync(StateHasChanged);
+    }
+
+    private async Task DeleteTemplate(MailTemplate mailTemplate)
+    {
+        await FileAccess.Delete(mailTemplate.File);
+        await LazyLoader.Reload();
+    }
+
+    private async void OnCancelTemplateEdit()
+    {
+        CurrentMailTemplate = null;
+        await InvokeAsync(StateHasChanged);
+    }
+
+    private async void OnSubmitTemplateEdit(string text)
+    {
+        await FileAccess.Write(CurrentMailTemplate!.File, text);
+
+        await ToastService.Success(
+            SmartTranslateService.Translate("Successfully saved file"));
+    }
+
+    private async Task CreateNewMailTemplate()
+    {
+        var name = await AlertService.Text(
+            SmartTranslateService.Translate("New mail template"),
+            SmartTranslateService.Translate("Enter the name of the new template"),
+            ""
+            );
+        
+        if(string.IsNullOrEmpty(name))
+            return;
+
+        await FileAccess.Write(new()
+        {
+            Name = name + ".html"
+        }, "");
+        
+        await LazyLoader.Reload();
+    }
+}