You can now specify an optional custom message in .feed and .yun which will be posted along with an update

src/NadekoBot/Db/Models/FeedSub.cs

@@ -8,6 +8,8 @@ public class FeedSub : DbEntity
 
     public ulong ChannelId { get; set; }
     public string Url { get; set; }
+    
+    public string Message { get; set; }
 
     public override int GetHashCode()
         => Url.GetHashCode(StringComparison.InvariantCulture) ^ GuildConfigId.GetHashCode();

src/NadekoBot/Migrations/Mysql/20221122204432_feed-text.cs

@@ -0,0 +1,26 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace NadekoBot.Migrations.Mysql
+{
+    public partial class feedtext : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "message",
+                table: "feedsub",
+                type: "longtext",
+                nullable: true)
+                .Annotation("MySql:CharSet", "utf8mb4");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "message",
+                table: "feedsub");
+        }
+    }
+}

src/NadekoBot/Migrations/Mysql/MysqlContextModelSnapshot.cs

@@ -975,6 +975,10 @@ namespace NadekoBot.Migrations.Mysql
                         .HasColumnType("int")
                         .HasColumnName("guildconfigid");
 
+                    b.Property<string>("Message")
+                        .HasColumnType("longtext")
+                        .HasColumnName("message");
+
                     b.Property<string>("Url")
                         .IsRequired()
                         .HasColumnType("varchar(255)")

src/NadekoBot/Migrations/PostgreSql/20221122204423_feed-text.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace NadekoBot.Migrations.PostgreSql
+{
+    public partial class feedtext : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "message",
+                table: "feedsub",
+                type: "text",
+                nullable: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "message",
+                table: "feedsub");
+        }
+    }
+}

src/NadekoBot/Migrations/PostgreSql/PostgreSqlContextModelSnapshot.cs

@@ -1023,6 +1023,10 @@ namespace NadekoBot.Migrations.PostgreSql
                         .HasColumnType("integer")
                         .HasColumnName("guildconfigid");
 
+                    b.Property<string>("Message")
+                        .HasColumnType("text")
+                        .HasColumnName("message");
+
                     b.Property<string>("Url")
                         .IsRequired()
                         .HasColumnType("text")

src/NadekoBot/Migrations/Sqlite/20221122204324_feed-text.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace NadekoBot.Migrations
+{
+    public partial class feedtext : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "Message",
+                table: "FeedSub",
+                type: "TEXT",
+                nullable: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Message",
+                table: "FeedSub");
+        }
+    }
+}

src/NadekoBot/Migrations/Sqlite/NadekoSqliteContextModelSnapshot.cs

@@ -765,6 +765,9 @@ namespace NadekoBot.Migrations
                     b.Property<int>("GuildConfigId")
                         .HasColumnType("INTEGER");
 
+                    b.Property<string>("Message")
+                        .HasColumnType("TEXT");
+
                     b.Property<string>("Url")
                         .IsRequired()
                         .HasColumnType("TEXT");

src/NadekoBot/Modules/Searches/Feeds/FeedCommands.cs

@@ -16,7 +16,7 @@ public partial class Searches
         [Cmd]
         [RequireContext(ContextType.Guild)]
         [UserPerm(GuildPerm.ManageMessages)]
-        public Task YtUploadNotif(string url, [Leftover] ITextChannel channel = null)
+        public Task YtUploadNotif(string url, ITextChannel channel = null, [Leftover] string message = null)
         {
             var m = _ytChannelRegex.Match(url);
             if (!m.Success)
@@ -24,19 +24,19 @@ public partial class Searches
 
             var channelId = m.Groups["channelid"].Value;
 
-            return Feed("https://www.youtube.com/feeds/videos.xml?channel_id=" + channelId, channel);
+            return Feed("https://www.youtube.com/feeds/videos.xml?channel_id=" + channelId, channel, message);
         }
 
         [Cmd]
         [RequireContext(ContextType.Guild)]
         [UserPerm(GuildPerm.ManageMessages)]
-        public async Task Feed(string url, [Leftover] ITextChannel channel = null)
+        public async Task Feed(string url, ITextChannel channel = null, [Leftover] string message = null)
         {
             if (!Uri.TryCreate(url, UriKind.Absolute, out var uri) 
                 || (uri.Scheme != Uri.UriSchemeHttp && uri.Scheme != Uri.UriSchemeHttps))
             {
                 await ReplyErrorLocalizedAsync(strs.feed_invalid_url);
-                return;
+                return; 
             }
 
             channel ??= (ITextChannel)ctx.Channel;
@@ -51,7 +51,10 @@ public partial class Searches
                 return;
             }
 
-            var result = _service.AddFeed(ctx.Guild.Id, channel.Id, url);
+            if (ctx.User is not IGuildUser gu || !gu.GuildPermissions.Administrator)
+                message = message?.SanitizeMentions(true);
+            
+            var result = _service.AddFeed(ctx.Guild.Id, channel.Id, url, message);
             if (result == FeedAddResult.Success)
             {
                 await ReplyConfirmLocalizedAsync(strs.feed_added);

src/NadekoBot/Modules/Searches/Feeds/FeedsService.cs

@@ -162,7 +162,6 @@ public class FeedsService : INService
                             }
                         }
 
-
                         embed.WithTitle(title.TrimTo(256));
 
                         var desc = feedItem.Description?.StripHtml();
@@ -171,15 +170,15 @@ public class FeedsService : INService
 
                         //send the created embed to all subscribed channels
                         var feedSendTasks = kvp.Value
-                                               .Where(x => x.GuildConfig is not null)
-                                               .Select(x => _client.GetGuild(x.GuildConfig.GuildId)
-                                                                   ?.GetTextChannel(x.ChannelId))
-                                               .Where(x => x is not null)
-                                               .Select(x => x.EmbedAsync(embed));
+                            .Where(x => x.GuildConfig is not null)
+                            .Select(x => _client.GetGuild(x.GuildConfig.GuildId)
+                                ?.GetTextChannel(x.ChannelId)
+                                ?.EmbedAsync(embed, x.Message))
+                            .Where(x => x is not null);
 
                         allSendTasks.Add(feedSendTasks.WhenAll());
 
-                        // as data retrieval was sucessful, reset error counter
+                        // as data retrieval was successful, reset error counter
                         ClearErrors(rssUrl);
                     }
                 }
@@ -207,7 +206,7 @@ public class FeedsService : INService
                   .ToList();
     }
 
-    public FeedAddResult AddFeed(ulong guildId, ulong channelId, string rssFeed)
+    public FeedAddResult AddFeed(ulong guildId, ulong channelId, string rssFeed, string message)
     {
         ArgumentNullException.ThrowIfNull(rssFeed, nameof(rssFeed));
 

src/NadekoBot/data/strings/commands/commands.en-US.yml

@@ -1991,13 +1991,22 @@ ytuploadnotif:
   desc: |-
     Subscribe to a youtube channel's upload rss feed.
     Shortcut for `.feed https://www.youtube.com/feeds/videos.xml?channel_id=%3Cyoutube_channel_id`
+    You can optionally specify a message which will be posted with an update.
   args:
-    - "https://www.youtube.com/channel/UCSJ4gkVC6NrvII8umztf0Ow"
+    - "https://www.youtube.com/channel/UCSJ4gkVC6NrvII8umztf0Ow" 
+    - "https://www.youtube.com/channel/UCSJ4gkVC6NrvII8umztf0Ow New video is posted"
 feed:
-  desc: "Subscribes to a feed. Bot will post an update up to once every 10 seconds. You can have up to 10 feeds on one server. All feeds must have unique URLs. Set a channel as a second optional parameter to specify where to send the updates."
+  desc: |-
+    Subscribes to a feed.
+    Bot will post an update up to once every 10 seconds.
+    You can have up to 10 feeds on one server.
+    All feeds must have unique URLs.
+    Set a channel as a second optional parameter to specify where to send the updates.
+    You can optionally specify a message after the channel name which will be posted with an update.
   args:
     - "https://blog.playstation.com/feed/"
     - "https://blog.playstation.com/feed/ #updates"
+    - "https://blog.playstation.com/feed/ #updates New playstation rss feed post!"
 feedremove:
   desc: "Stops tracking a feed on the given index. Use `{0}feeds` command to see a list of feeds and their indexes."
   args: