✨ SEO optimization on the hosted pages

DysonNetwork.Zone/SEO/SitemapController.cs

@@ -0,0 +1,74 @@
+using DysonNetwork.Shared.Models;
+using DysonNetwork.Shared.Proto;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using SimpleMvcSitemap;
+
+namespace DysonNetwork.Zone.SEO;
+
+[ApiController]
+public class SitemapController(
+    AppDatabase db,
+    PostService.PostServiceClient postClient
+)
+    : ControllerBase
+{
+    [HttpGet("sitemap.xml")]
+    public async Task<IActionResult> Sitemap()
+    {
+        var nodes = new List<SitemapNode>
+        {
+            // Add static pages
+            new("/")
+                { ChangeFrequency = ChangeFrequency.Weekly, Priority = 1.0m },
+            new("/about")
+                { ChangeFrequency = ChangeFrequency.Monthly, Priority = 0.8m },
+            new("/posts")
+                { ChangeFrequency = ChangeFrequency.Daily, Priority = 0.9m }
+        };
+
+        // Add dynamic posts
+        var allPosts = await GetAllPosts();
+        nodes.AddRange(allPosts.Select(post =>
+        {
+            var uri = post.AsUrl(Request.Host.ToString(), Request.Scheme);
+            return new SitemapNode(uri)
+            {
+                LastModificationDate = post.EditedAt?.ToDateTimeUtc() ?? post.CreatedAt.ToDateTimeUtc(),
+                ChangeFrequency = ChangeFrequency.Monthly, Priority = 0.7m
+            };
+        }));
+
+        return new SitemapProvider().CreateSitemap(new SitemapModel(nodes));
+    }
+
+    private async Task<List<SnPost>> GetAllPosts()
+    {
+        var allPosts = new List<SnPost>();
+        string? pageToken = null;
+        const int pageSize = 100; // Fetch in batches
+
+        while (true)
+        {
+            var request = new ListPostsRequest
+            {
+                OrderBy = "date",
+                OrderDesc = true,
+                PageSize = pageSize,
+                PageToken = pageToken ?? string.Empty
+            };
+
+            var response = await postClient.ListPostsAsync(request);
+
+            if (response?.Posts != null)
+                allPosts.AddRange(response.Posts.Select(SnPost.FromProtoValue));
+
+            if (string.IsNullOrEmpty(response?.NextPageToken))
+                break;
+
+            pageToken = response.NextPageToken;
+        }
+
+        return allPosts;
+    }
+}