Fix for "No Dispatches appearing" bug. (#149)

* Update ArrowHeadApiService.cs

adding From_Timestamp to NewsFeed task

* Update HelldiversSyncConfiguration.cs

Adding NewsFeedFromTimestamp

* Update ArrowHeadApiService.cs

added NewsFeedFromTimestamp into ArrowHeadApiService, this prevents a crash.

* adding in formatting requests, and fixing what I found to be the acutal issue.  ${} isn't to be used in C#!

* correcting spacing

* Update ArrowHeadApiService.cs

* Update ArrowHeadApiService.cs

Co-authored-by: Wannes Gennar <dealloc@users.noreply.github.com>

---------

Co-authored-by: Wannes Gennar <dealloc@users.noreply.github.com>

Author: CrosswaveOmega

src/Helldivers-2-Sync/Configuration/HelldiversSyncConfiguration.cs

@@ -35,4 +35,9 @@ public sealed class HelldiversSyncConfiguration
     /// Get the maximum number of entries returned by ArrowHead from the newsfeed API.
     /// </summary>
     public uint NewsFeedMaxEntries { get; set; } = 1024;
+
+    /// <summary>
+    /// Get all news feed entries that were published after this timestamp
+    /// </summary>
+    public uint NewsFeedFromTimestamp { get; set; } = 1000;
 }

src/Helldivers-2-Sync/Services/ArrowHeadApiService.cs

@@ -74,16 +74,18 @@ public async Task<Memory<byte>> GetWarStatus(string season, string language, Can
     public async Task<Memory<byte>> LoadFeed(string season, string language, CancellationToken cancellationToken)
     {
         // If the `NewsFeedMaxEntries` flag is not set to 0 we pass it in.
+        // This parameter needs to be passed or a 400 status code will be returned occasionally.
         var request = options.Value.NewsFeedMaxEntries is 0
-            ? BuildRequest($"/api/NewsFeed/{season}", language)
-            : BuildRequest($"/api/NewsFeed/{season}?maxEntries=${options.Value.NewsFeedMaxEntries}", language);
+            ? BuildRequest($"/api/NewsFeed/{season}?fromTimestamp={options.Value.NewsFeedFromTimestamp}", language)
+            : BuildRequest($"/api/NewsFeed/{season}?maxEntries={options.Value.NewsFeedMaxEntries}&fromTimestamp={options.Value.NewsFeedFromTimestamp}", language);
 
         using var response = await http.SendAsync(request, cancellationToken);
 
         // Throw on error responses so we don't have to look down the entire serialisation tree.
         response.EnsureSuccessStatusCode();
 
         await using var stream = await response.Content.ReadAsStreamAsync(cancellationToken);
+
         return await CollectStream(stream, cancellationToken);
     }