Added .stickeradd command

Updated docs for medusa

docs/medusa/creating-a-medusa.md

@@ -147,6 +147,7 @@ This section will guide you through how to create a simple custom medusa. You ca
         <!-- Use latest .net features -->
         <LangVersion>preview</LangVersion>
         <EnablePreviewFeatures>true</EnablePreviewFeatures>
+        <GenerateRequiresPreviewFeaturesAttribute>true</GenerateRequiresPreviewFeaturesAttribute>
         
         <!-- tell .net that this library will be used as a plugin -->
         <EnableDynamicLoading>true</EnableDynamicLoading>

src/NadekoBot/Modules/Utility/Utility.cs

@@ -402,6 +402,99 @@ public partial class Utility : NadekoModule
         await ctx.OkAsync();
     }
 
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [BotPerm(GuildPerm.ManageEmojisAndStickers)]
+    [UserPerm(GuildPerm.ManageEmojisAndStickers)]
+    public async Task StickerAdd(string name = null, string description = null, params string[] tags)
+    {
+        string format;
+        Stream stream;
+
+        if (ctx.Message.Stickers.Count is 1 && ctx.Message.Stickers.First() is SocketSticker ss)
+        {
+            name ??= ss.Name;
+            description = ss.Description;
+            format = FormatToExtension(ss.Format);
+
+            using var http = _httpFactory.CreateClient();
+            stream = await http.GetStreamAsync(ss.GetStickerUrl());
+        }
+        // else if (ctx.Message.Attachments.FirstOrDefault() is { } attachment)
+        // {
+        //     var url = attachment?.Url;
+        //
+        //     if (url is null)
+        //         return;
+        //
+        //     if (name is null)
+        //     {
+        //         await ReplyErrorLocalizedAsync(strs.sticker_missing_name);
+        //         return;
+        //     }
+        //
+        //     format = Path.GetExtension(attachment.Filename);
+        //
+        //     if (attachment is not { Width: 300, Height: 300 })
+        //     {
+        //         await ReplyErrorLocalizedAsync(strs.sticker_invalid_size);
+        //         return;
+        //     }
+        //
+        //     using var http = _httpFactory.CreateClient();
+        //     
+        //     using var res = await http.GetAsync(url, HttpCompletionOption.ResponseHeadersRead);
+        //     if (res.GetContentLength() > 512.Kilobytes().Bytes)
+        //     {
+        //         await ReplyErrorLocalizedAsync(strs.invalid_emoji_link);
+        //         return;
+        //     }
+        //
+        //     stream = await res.Content.ReadAsStreamAsync();
+        // }
+        else
+        {
+            await ReplyErrorLocalizedAsync(strs.sticker_error);
+            return;
+        }
+        
+        try
+        {
+            await ctx.Guild.CreateStickerAsync(name,
+                string.IsNullOrWhiteSpace(description) ? "Missing description" : description,
+                tags,
+                stream,
+                $"{name}.{format}");
+
+            await ctx.OkAsync();
+        }
+        catch (Exception ex)
+        {
+            Log.Warning(ex, "Error occurred while adding a sticker: {Message}", ex.Message);
+            await ReplyErrorLocalizedAsync(strs.error_occured);
+        }
+        finally
+        {
+            await stream.DisposeAsync();
+        }
+    }
+    
+    private static string FormatToExtension(StickerFormatType format)
+    {
+      switch (format)
+      {
+        case StickerFormatType.None:
+        case StickerFormatType.Png:
+        case StickerFormatType.Apng:
+          return "png";
+        case StickerFormatType.Lottie:
+          return "lottie";
+        default:
+          throw new ArgumentException(nameof (format));
+      }
+    }
+
     [Cmd]
     [OwnerOnly]
     public async Task ListServers(int page = 1)

src/NadekoBot/data/aliases.yml

@@ -728,6 +728,9 @@ showemojis:
 emojiadd:
   - emojiadd
   - ea
+stickeradd:
+  - stickeradd
+  - sa
 emojiremove:
   - emojiremove
   - emojirm

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

@@ -1245,6 +1245,10 @@ emojiremove:
   desc: "Removes the specified emoji or emojis from this server."
   args:
     - ":eagleWarrior: :plumedArcher:"
+stickeradd:
+  desc: "Adds the sticker from your message to this server. Send the sticker along with this command (in the same message)."
+  args:
+    - "optionalname \"optional description\" tag1 tag2 tagN"
 deckshuffle:
   desc: "Reshuffles all cards back into the deck."
   args:

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

@@ -977,14 +977,14 @@
   "created_by": "Created by {0}",
   "module_footer": "{0}cmds {1}",
   "module_page_empty": "No module on this page.",
-  "module_description_help": "Get command help, descriptions and usage examples",  
+  "module_description_help": "Get command help, descriptions and usage examples",
-  "module_description_gambling": "Bet on dice rolls, blackjack, slots, coinflips and others",  
+  "module_description_gambling": "Bet on dice rolls, blackjack, slots, coinflips and others",
-  "module_description_games": "Play trivia, nunchi, hangman, connect4 and other games",  
+  "module_description_games": "Play trivia, nunchi, hangman, connect4 and other games",
-  "module_description_nsfw": "NSFW commands.",  
+  "module_description_nsfw": "NSFW commands.",
-  "module_description_music": "Play music from youtube, local files soundcloud and radio streams",  
+  "module_description_music": "Play music from youtube, local files soundcloud and radio streams",
-  "module_description_utility": "Manage custom quotes, repeating messages and check facts about the server",  
+  "module_description_utility": "Manage custom quotes, repeating messages and check facts about the server",
   "module_description_administration": "Moderation, punish users, setup self assignable roles and greet messages",
-  "module_description_expressions": "Setup custom bot responses to certain words or phrases",  
+  "module_description_expressions": "Setup custom bot responses to certain words or phrases",
   "module_description_permissions": "Setup perms for commands, filter words and set up command cooldowns",
   "module_description_searches": "Search for jokes, images of animals, anime and manga",
   "module_description_xp": "Gain xp based on chat activity, check users' xp cards",
@@ -1005,7 +1005,7 @@
   "linkonly_disable": "This channel is no longer link-only.",
   "deleted_x_servers": "Deleted {0} servers.",
   "curtr_gift": "Gift from {0} [{1}]",
-  "curtr_award": "Awarded by bot owner {0} [{1}]",  
+  "curtr_award": "Awarded by bot owner {0} [{1}]",
   "curtr_take": "Taken by bot owner {0} [{1}]",
   "list_of_medusae": "List of Medusae",
   "list_of_unloaded": "List of Available Medusae",
@@ -1052,6 +1052,9 @@
   "xpshop_already_owned": "You already own this item.",
   "xpshop_item_not_found": "An item with that key doesn't exist.",
   "xpshop_website": "You can see the list of all Xp Shop items here: <https://xpshop.nadeko.bot>",
+  "sticker_invalid_size": "Stickers must be exactly 300x300 pixels.",
+  "sticker_error": "You must either send a sticker along with this command, or upload a 300x300 .png or .apng image.",
+  "sticker_missing_name": "Please specify a name for the sticker.",
   "thread_deleted": "Thread Deleted",
   "thread_created": "Thread Created"
 }