improve display of edit paste fallback

Author: Erisa

Helpers/DiscordHelpers.cs

@@ -291,9 +291,9 @@ public static async Task<DiscordMessageBuilder> GenerateMessageRelay(Models.Cach
                 embed.AddField("Message Link", $"{MessageLink(message)}");
                 if (oldMessage is not null)
                 {
-                    embed.AddField("Old content", await StringHelpers.CodeOrHasteBinAsync(oldMessage.Content, plain: true, noCode: true));
+                    embed.AddField("Old content", await StringHelpers.CodeOrHasteBinAsync(oldMessage.Content, noCode: true, messageWrapper: true));
                 }
-                embed.AddField("New content", await StringHelpers.CodeOrHasteBinAsync(message.Content, plain: true, noCode: true));
+                embed.AddField("New content", await StringHelpers.CodeOrHasteBinAsync(message.Content, noCode: true, messageWrapper: true));
                 embed.Color = DiscordColor.Yellow;
 
             }

Helpers/HasteBinClient.cs

@@ -83,13 +83,13 @@ public async Task<HasteBinResult> PostTclipAsync(string content, string language
                 fullUrl += "/";
             }
             string postUrl = $"{fullUrl}api/post";
-            if (language == default)
+            if (language == default || language == "")
                 language = "txt";
 
             var formdata = new MultipartFormDataContent
             {
                 { new StringContent(content), "content"},
-                { new StringContent(Program.discord.CurrentUser.Username + "." + (language)), "filename" }
+                { new StringContent(Program.discord.CurrentUser.Username + "." + language), "filename" }
             };
 
             HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, new Uri(postUrl))

Helpers/StringHelpers.cs

@@ -29,7 +29,7 @@ public static string WarningContextString(DiscordUser user, string reason, bool
                 return $"{Program.cfgjson.Emoji.Warning} {user.Mention} was warned: **{reason.Replace("`", "\\`").Replace("*", "\\*")}**";
         }
 
-        public static async Task<string> CodeOrHasteBinAsync(string input, string language = "", int charLimit = 1930, bool plain = false, bool noCode = false)
+        public static async Task<string> CodeOrHasteBinAsync(string input, string language = "", int charLimit = 1930, bool plain = false, bool noCode = false, bool messageWrapper = false)
         {
             bool inputHasCodeBlock = input.Contains("```");
             if (input.Length > charLimit || inputHasCodeBlock)
@@ -41,6 +41,8 @@ public static async Task<string> CodeOrHasteBinAsync(string input, string langua
 
                     if (plain)
                         return hasteUrl;
+                    else if (messageWrapper)
+                        return $"[`📄 View online`]({hasteResult.RawUrl})";
                     else if (inputHasCodeBlock)
                         return $"{Program.cfgjson.Emoji.Warning} Output contained a code block, so it was uploaded to Hastebin to avoid formatting issues: {hasteUrl}";
                     else