add /undo, update help, readme and changelog; fix follow to join

src/group_handler/mod.rs

@@ -18,12 +18,14 @@ use crate::store::ConfigStore;
 use crate::store::data::GroupConfig;
 use crate::utils::{LogError, normalize_acct, VisExt};
 use crate::command::StatusCommand;
+use elefren::entities::account::Account;
 
 mod handle_mention;
 
 /// This is one group's config store capable of persistence
 #[derive(Debug)]
 pub struct GroupHandle {
+    pub(crate) group_account: Account,
     pub(crate) client: FediClient,
     pub(crate) config: GroupConfig,
     pub(crate) store: Arc<ConfigStore>,
@@ -440,7 +442,7 @@ impl GroupHandle {
             admins.sort();
 
             format!("\
-                @{user} Welcome! This group has posting restricted to members. \
+                @{user} Welcome to the group! This group has posting restricted to members. \
                 If you'd like to join, please ask one of the group admins:\n\
                 {admins}",
                     user = notif_acct,
@@ -448,9 +450,13 @@ impl GroupHandle {
             )
         } else {
             follow_back = true;
+
+            self.config.set_member(notif_acct, true)
+                .log_error("Fail add a member");
+
             format!("\
                 @{user} Welcome to the group! The group user will now follow you back to complete the sign-up. \
-                To share a post, tag the group user or use one of the group hashtags.\n\n\
+                To share a post, @ the group user or use a group hashtag.\n\n\
                 Use /help for more info.",
                     user = notif_acct
             )