change: added ending date for givaway as a timestamp tag

fixed: fixed an issue with flag translates

src/NadekoBot/Db/Models/giveaway/GiveawayModel.cs

@@ -8,6 +8,7 @@ public sealed class GiveawayModel
     public ulong MessageId { get; set; }
     public ulong ChannelId { get; set; }
     public string Message { get; set; }
+    public int Winners { get; set; }
 
     public IList<GiveawayUser> Participants { get; set; } = new List<GiveawayUser>();
     public DateTime EndsAt { get; set; }

src/NadekoBot/Modules/Searches/Translate/FlagTranslateService.cs

@@ -122,13 +122,16 @@ public sealed partial class FlagTranslateService : IReadyExecutor, INService
             if (!_supportedFlags.TryGetValue(code, out var lang))
                 return;
 
-            if (!_msgLangs.Add((reaction.MessageId, lang)))
+            if (_msgLangs.Contains((reaction.MessageId, lang)))
                 return;
 
             var result = await _cache.GetAsync(CdKey(reaction.UserId));
             if (result.TryPickT0(out _, out _))
                 return;
             
+            if (!_msgLangs.Add((reaction.MessageId, lang)))
+                return;
+
             await _cache.AddAsync(CdKey(reaction.UserId), true, TimeSpan.FromSeconds(5));
 
             var msg = await arg1.GetOrDownloadAsync();

src/NadekoBot/Modules/Utility/Giveaway/GiveawayCommands.cs

@@ -38,6 +38,8 @@ public partial class Utility
             eb
                 .WithOkColor()
                 .WithTitle(GetText(strs.giveaway_started))
+                .AddField(GetText(strs.lasts_until), TimestampTag.FromDateTime(DateTime.UtcNow.Add(duration)), true)
+                // .AddField(GetText(strs.winners_count), "1", true)
                 .WithFooter($"id:  {new kwum(id).ToString()}");
 
             await startingMsg.AddReactionAsync(new Emoji(GiveawayService.GiveawayEmoji));

src/NadekoBot/data/strings/responses/responses.en-US.json

@@ -1135,5 +1135,7 @@
   "no_last_queued_found": "No last queued track found.",
   "wrongsong_success": "Oops! Wrong song removed: {0}",
   "server_not_found": "Server not found.",
-  "server_color_set": "Successfully set a new server color."
+  "server_color_set": "Successfully set a new server color.",
+  "lasts_until": "Lasts Until",
+  "winners_count": "Winners"
 }