Optimize GameServer /announce and add website announcements (#810)

* Improve game server announce by using StringBuilder

* Implement web announcements (condensed commit)

* Implement discord webhook support

* Display a separate message if there are no announcements

* Fix announcement string unit tests

* Fix header admin button unit test

* Clarify announcement id variable name

* Increase webhook truncation limit to 250 chars

* Convert announce text to string when returning 200

* Fix announcement unit tests ... again

* Make announcement text input a textarea rather than a simple input

* Fix styling discrepancy

* Clarify submission button

* Improve announcement webhook & set default textarea row amount

ProjectLighthouse.Servers.Website/Pages/AnnouncePage.cshtml

@@ -0,0 +1,67 @@
+@page "/announce"
+@using LBPUnion.ProjectLighthouse.Localization.StringLists
+@using LBPUnion.ProjectLighthouse.Types.Entities.Website
+@model LBPUnion.ProjectLighthouse.Servers.Website.Pages.AnnouncePage
+@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
+
+@{
+    Layout = "Layouts/BaseLayout";
+    Model.Title = Model.Translate(GeneralStrings.Announcements);
+}
+
+@if (Model.User != null && Model.User.IsAdmin)
+{
+    <div class="ui red segment">
+        <h3>Post New Announcement</h3>
+        @if (!string.IsNullOrWhiteSpace(Model.Error))
+        {
+            @await Html.PartialAsync("Partials/ErrorModalPartial", (Model.Translate(GeneralStrings.Error), Model.Error), ViewData)
+        }
+        <form id="form" method="POST" class="ui form center aligned" action="/announce">
+            @Html.AntiForgeryToken()
+            <div class="field">
+                <label style="text-align: left" for="title">Announcement Title</label>
+                <input type="text" name="title" id="title">
+            </div>
+            <div class="field">
+                <label style="text-align: left" for="content">Announcement Content</label>
+                <textarea name="content" id="content" spellcheck="false" rows="3"></textarea>
+            </div>
+            <button class="ui button green" type="submit" tabindex="0">Post Announcement</button>
+        </form>
+    </div>
+}
+
+@if (Model.Announcements.Any())
+{
+    @foreach (WebsiteAnnouncementEntity announcement in Model.Announcements)
+    {
+        <div class="ui blue segment" style="position: relative;">
+            <h3>@announcement.Title</h3>
+            <p style="white-space: initial;">
+                @announcement.Content
+            </p>
+
+            @if (Model.User != null && Model.User.IsAdmin)
+            {
+                <form method="post">
+                    @Html.AntiForgeryToken()
+                    <button
+                        asp-page-handler="delete"
+                        asp-route-id="@announcement.AnnouncementId"
+                        onclick="return confirm('Are you sure you want to delete this announcement?')"
+                        class="ui red icon button"
+                        style="position: absolute; right: 0.5em; top: 0.5em">
+                        <i class="trash icon"></i>
+                    </button>
+                </form>
+            }
+        </div>
+    }    
+}
+else
+{
+    <div class="ui blue segment" style="position: relative;">
+        <p>There are no announcements to display.</p>
+    </div>
+}

ProjectLighthouse.Servers.Website/Pages/AnnouncePage.cshtml.cs

@@ -0,0 +1,82 @@
+#nullable enable
+
+using LBPUnion.ProjectLighthouse.Configuration;
+using LBPUnion.ProjectLighthouse.Database;
+using LBPUnion.ProjectLighthouse.Helpers;
+using LBPUnion.ProjectLighthouse.Servers.Website.Pages.Layouts;
+using LBPUnion.ProjectLighthouse.Types.Entities.Profile;
+using LBPUnion.ProjectLighthouse.Types.Entities.Website;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace LBPUnion.ProjectLighthouse.Servers.Website.Pages;
+
+public class AnnouncePage : BaseLayout
+{
+    public AnnouncePage(DatabaseContext database) : base(database)
+    { }
+
+    public List<WebsiteAnnouncementEntity> Announcements { get; set; } = new();
+    public string Error { get; set; } = "";
+
+    public async Task<IActionResult> OnGet()
+    {
+        this.Announcements = await this.Database.WebsiteAnnouncements
+            .OrderByDescending(a => a.AnnouncementId)
+            .ToListAsync();
+
+        return this.Page();
+    }
+
+    public async Task<IActionResult> OnPost([FromForm] string title, [FromForm] string content)
+    {
+        UserEntity? user = this.Database.UserFromWebRequest(this.Request);
+        if (user == null) return this.BadRequest();
+        if (!user.IsAdmin) return this.BadRequest();
+
+        if (string.IsNullOrWhiteSpace(title) || string.IsNullOrWhiteSpace(content))
+        {
+            this.Error = "Invalid form data, please ensure all fields are filled out.";
+            return this.Page();
+        }
+
+        WebsiteAnnouncementEntity announcement = new()
+        {
+            Title = title,
+            Content = content,
+        };
+
+        await this.Database.WebsiteAnnouncements.AddAsync(announcement);
+        await this.Database.SaveChangesAsync();
+
+        if (DiscordConfiguration.Instance.DiscordIntegrationEnabled)
+        {
+            string truncatedAnnouncement = content.Length > 250
+                ? content[..250] + $"... [read more]({ServerConfiguration.Instance.ExternalUrl}/announce)"
+                : content;
+
+            await WebhookHelper.SendWebhook($":mega: {title}",
+                truncatedAnnouncement);
+        }
+
+        return this.RedirectToPage();
+    }
+
+    public async Task<IActionResult> OnPostDelete(int id)
+    {
+        UserEntity? user = this.Database.UserFromWebRequest(this.Request);
+        if (user == null) return this.BadRequest();
+        if (!user.IsAdmin) return this.BadRequest();
+
+        WebsiteAnnouncementEntity? announcement = await this.Database.WebsiteAnnouncements
+            .Where(a => a.AnnouncementId == id)
+            .FirstOrDefaultAsync();
+
+        if (announcement == null) return this.BadRequest();
+
+        this.Database.WebsiteAnnouncements.Remove(announcement);
+        await this.Database.SaveChangesAsync();
+
+        return this.RedirectToPage();
+    }
+}

ProjectLighthouse.Servers.Website/Pages/Layouts/BaseLayout.cshtml.cs

@@ -33,6 +33,8 @@ public class BaseLayout : PageModel
         this.NavigationItems.Add(new PageNavigationItem(BaseLayoutStrings.HeaderUsers, "/users/0", "user friends"));
         this.NavigationItems.Add(new PageNavigationItem(BaseLayoutStrings.HeaderPhotos, "/photos/0", "camera"));
         this.NavigationItems.Add(new PageNavigationItem(BaseLayoutStrings.HeaderSlots, "/slots/0", "globe americas"));
+        
+        this.NavigationItemsRight.Add(new PageNavigationItem(GeneralStrings.Announcements, "/announce", "bullhorn"));
     }
 
     public new UserEntity? User {