make modmailUserId optional

Fixes #307

Author: Erisa

Commands/MuteCmds.cs

@@ -447,7 +447,7 @@ public async Task EditMuteCmd(TextCommandContext ctx,
                                 $"\nMute expires: <t:{TimeHelpers.ToUnixTimestamp(mute.ExpireTime)}:R>";
                 }
 
-                if (reason.ToLower().Contains("modmail"))
+                if (reason.ToLower().Contains("modmail") && Program.cfgjson.ModmailUserId != 0)
                 {
                     dmContent += $"\n{Program.cfgjson.Emoji.Information} When contacting <@{Program.cfgjson.ModmailUserId}>, make sure to **enable DMs** from the server to allow your message to go through.";
                 }

Events/DirectMessageEvent.cs

@@ -19,7 +19,7 @@ public static async void DirectMessageEventHandler(DiscordMessage message)
                 if ((DateTime.UtcNow - msgBefore.CreationTimestamp.DateTime).TotalHours < Program.cfgjson.DmAutoresponseTimeLimit)
                 {
                     // Make sure the message before the current one is from the bot and is a warn/mute DM & respond
-                    if (msgBefore.Author.Id == Program.discord.CurrentUser.Id &&
+                    if (msgBefore.Author.Id == Program.discord.CurrentUser.Id && Program.cfgjson.ModmailUserId != 0 &&
                         (msgBefore.Content.Contains("You were warned") ||
                             msgBefore.Content.Contains("You have been muted") ||
                             msgBefore.Content.Contains("You were automatically warned") ||

Helpers/MuteHelpers.cs

@@ -193,7 +193,7 @@ public static (int MuteHours, int WarnsSinceThreshold) GetHoursToMuteFor(Diction
                         }
                     }
 
-                    if (reason.ToLower().Contains("modmail"))
+                    if (reason.ToLower().Contains("modmail") && Program.cfgjson.ModmailUserId != 0)
                     {
                         dmContent += $"\n{Program.cfgjson.Emoji.Information} When contacting <@{Program.cfgjson.ModmailUserId}>, make sure to **enable DMs** from the server to allow your message to go through.";
                     }

Types/Config.cs

@@ -111,7 +111,7 @@ public class ConfigJson
         public string SecondaryAutoDehoistCharacters { get; private set; }
 
         [JsonProperty("modmailUserId")]
-        public ulong ModmailUserId { get; private set; }
+        public ulong ModmailUserId { get; private set; } = 0;
 
         [JsonProperty("announcementRoles")]
         public Dictionary<string, ulong> AnnouncementRoles { get; private set; }