feat: ephemeral community replies

crates/rustmail/src/commands/add_reminder/slash_command/add_reminder.rs

@@ -111,7 +111,7 @@ impl RegistrableCommand for AddReminderCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            let _ = defer_response(&ctx, &command).await;
+            let _ = defer_response(&ctx, &command, &config).await;
 
             let mut time: Option<String> = None;
             let mut content: Option<String> = None;

crates/rustmail/src/commands/add_staff/slash_command/add_staff.rs

@@ -78,7 +78,7 @@ impl RegistrableCommand for AddStaffCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             if !thread_exists_by_channel(command.channel_id, pool).await {
                 return Err(ModmailError::Thread(ThreadError::NotAThreadChannel));

crates/rustmail/src/commands/alert/slash_command/alert.rs

@@ -76,7 +76,7 @@ impl RegistrableCommand for AlertCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let user_id = get_thread_user_id_from_command(&ctx, &command, &config, pool).await?;
 

crates/rustmail/src/commands/baninfo/slash_command/baninfo.rs

@@ -78,7 +78,7 @@ impl RegistrableCommand for BaninfoCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let mut query: Option<String> = None;
             for option in &command.data.options {

crates/rustmail/src/commands/category/slash_command/category.rs

@@ -288,7 +288,7 @@ impl RegistrableCommand for CategoryCommand {
                 .db_pool
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let subcommand = match command.data.options.first() {
                 Some(s) => s,

crates/rustmail/src/commands/close/slash_command/close.rs

@@ -111,7 +111,7 @@ impl RegistrableCommand for CloseCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let mut time_before_close: Option<String> = None;
             let mut silent: bool = false;

crates/rustmail/src/commands/edit/slash_command/edit.rs

@@ -99,7 +99,7 @@ impl RegistrableCommand for EditCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let mut msg_id: i64 = 0;
             let mut new_content: String = String::new();

crates/rustmail/src/commands/force_close/slash_command/force_close.rs

@@ -59,7 +59,7 @@ impl RegistrableCommand for ForceCloseCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             if !is_a_ticket_channel(command.channel_id, db_pool).await {
                 match command.channel_id.to_channel(&ctx.http).await {

crates/rustmail/src/commands/help/slash_command/help.rs

@@ -69,7 +69,7 @@ impl RegistrableCommand for HelpCommand {
         let config = config.clone();
 
         Box::pin(async move {
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let mut command_name: Option<String> = None;
 

crates/rustmail/src/commands/id/slash_command/id.rs

@@ -61,7 +61,7 @@ impl RegistrableCommand for IdCommand {
                 }
             };
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             if !is_a_ticket_channel(command.channel_id, pool).await {
                 return Err(ModmailError::Thread(ThreadError::NotAThreadChannel));

crates/rustmail/src/commands/logs/slash_command/logs.rs

@@ -70,7 +70,7 @@ impl RegistrableCommand for LogsCommand {
                 None => return Err(ModmailError::Database(DatabaseError::ConnectionFailed)),
             };
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let mut user_id: Option<UserId> = None;
 

crates/rustmail/src/commands/move_thread/slash_command/move_thread.rs

@@ -82,7 +82,7 @@ impl RegistrableCommand for MoveCommand {
                 }
             };
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             if get_user_id_from_channel_id(&command.channel_id.to_string(), pool)
                 .await

crates/rustmail/src/commands/new_thread/slash_command/new_thread.rs

@@ -85,7 +85,7 @@ impl RegistrableCommand for NewThreadCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let user_id = match command
                 .data

crates/rustmail/src/commands/ping/slash_command/ping.rs

@@ -60,7 +60,7 @@ impl RegistrableCommand for PingCommand {
         let config = config.clone();
 
         Box::pin(async move {
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let response = MessageBuilder::system_message(&ctx, &config)
                 .content("...")

crates/rustmail/src/commands/recover/slash_command/recover.rs

@@ -59,7 +59,7 @@ impl RegistrableCommand for RecoverCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let mut params = HashMap::new();
             params.insert("user".to_string(), command.user.name.clone());

crates/rustmail/src/commands/release/slash_command/release.rs

@@ -59,7 +59,7 @@ impl RegistrableCommand for ReleaseCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             if is_a_ticket_channel(command.channel_id, db_pool).await {
                 let thread = match get_thread_by_channel_id(

crates/rustmail/src/commands/reminder_subscription/slash_command/reminder_subscription.rs

@@ -97,7 +97,7 @@ impl RegistrableCommand for ReminderSubscriptionCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            let _ = defer_response(&ctx, &command).await;
+            let _ = defer_response(&ctx, &command, &config).await;
 
             let mut action: Option<String> = None;
             let mut role_id: Option<RoleId> = None;

crates/rustmail/src/commands/remove_reminder/slash_command/remove_reminder.rs

@@ -75,7 +75,7 @@ impl RegistrableCommand for RemoveReminderCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            let _ = defer_response(&ctx, &command).await;
+            let _ = defer_response(&ctx, &command, &config).await;
 
             let mut reminder_id: Option<i64> = None;
 

crates/rustmail/src/commands/remove_staff/slash_command/remove_staff.rs

@@ -80,7 +80,7 @@ impl RegistrableCommand for RemoveStaffCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             if !thread_exists_by_channel(command.channel_id, pool).await {
                 return Err(ModmailError::Thread(ThreadError::NotAThreadChannel));

crates/rustmail/src/commands/rename/slash_command/rename.rs

@@ -79,7 +79,7 @@ impl RegistrableCommand for RenameCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             if !is_a_ticket_channel(command.channel_id, db_pool).await {
                 return Err(ModmailError::Thread(ThreadError::NotAThreadChannel));

crates/rustmail/src/commands/reply/slash_command/reply.rs

@@ -132,7 +132,7 @@ impl RegistrableCommand for ReplyCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let mut content: Option<String> = None;
             let mut snippet_key: Option<String> = None;

crates/rustmail/src/commands/snippet/slash_command/snippet.rs

@@ -232,7 +232,7 @@ impl RegistrableCommand for SnippetCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let subcommand = &command.data.options[0];
             let subcommand_name = &subcommand.name;

crates/rustmail/src/commands/status/slash_command/status.rs

@@ -162,7 +162,7 @@ impl RegistrableCommand for StatusCommand {
         let config = config.clone();
 
         Box::pin(async move {
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let mode = command.data.options.iter().find_map(|opt| {
                 if opt.name == "mode"

crates/rustmail/src/commands/take/slash_command/take.rs

@@ -59,7 +59,7 @@ impl RegistrableCommand for TakeCommand {
                 .as_ref()
                 .ok_or_else(database_connection_failed)?;
 
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             if is_a_ticket_channel(command.channel_id, db_pool).await {
                 let thread = match get_thread_by_channel_id(

crates/rustmail/src/commands/version/slash_command/version.rs

@@ -59,7 +59,7 @@ impl RegistrableCommand for VersionCommand {
         let config = config.clone();
 
         Box::pin(async move {
-            defer_response(&ctx, &command).await?;
+            defer_response(&ctx, &command, &config).await?;
 
             let content = build_version_content(&config).await;
 

crates/rustmail/src/handlers/guild_interaction_handler.rs

@@ -160,7 +160,7 @@ impl EventHandler for InteractionHandler {
                     )
                     .await
                 {
-                    defer_response(&ctx, &command).await.ok();
+                    defer_response(&ctx, &command, &self.config).await.ok();
 
                     let _ = MessageBuilder::system_message(&ctx, &self.config)
                         .translated_content(

crates/rustmail/src/utils/command/defer_response.rs

@@ -1,9 +1,23 @@
+use crate::prelude::config::*;
 use crate::prelude::errors::*;
 use serenity::all::{
     CommandInteraction, Context, CreateInteractionResponse, CreateInteractionResponseMessage,
 };
 
-pub async fn defer_response(ctx: &Context, command: &CommandInteraction) -> ModmailResult<()> {
+/// Defers a slash command. Outside the staff guild (community guild in dual mode) the response is
+/// ephemeral, so only the invoking staff member sees the bot's answer (and any error).
+pub async fn defer_response(
+    ctx: &Context,
+    command: &CommandInteraction,
+    config: &Config,
+) -> ModmailResult<()> {
+    let outside_staff_guild = command
+        .guild_id
+        .is_some_and(|id| id.get() != config.bot.get_staff_guild_id());
+    if outside_staff_guild {
+        return defer_response_ephemeral(ctx, command).await;
+    }
+
     command
         .create_response(
             &ctx.http,

docs/guides/commands.md

@@ -378,7 +378,7 @@ Commands (text and slash) are reserved to staff:
 - **Dual-server mode**: commands only work in the staff server. Slash commands are not registered in the community
   server, and text commands sent there are ignored. The one exception is the *New Thread* user context menu
   (right-click a member → Apps), which is available in the community server too, but only for members of the staff
-  server.
+  server. Its reply there is ephemeral ("Only you can see this"), so community members see nothing of it.
 - **Single-server mode**: staff are the members who can see the inbox category (`inbox_category_id`), which is also
   who can see the tickets. Other members are ignored by text commands and get a "permission denied" reply to slash
   commands. To also hide slash commands from them, restrict the bot's commands in *Server Settings → Integrations*.