untested hashtag boost

Cargo.lock

@@ -276,7 +276,6 @@ checksum = "ea57b42383d091c85abcc2706240b94ab2a8fa1fc81c10ff23c4de06e2a90b5e"
 [[package]]
 name = "elefren"
 version = "0.22.0"
-source = "git+https://git.ondrovo.com/MightyPork/elefren-fork.git#de38639fd178ae8ae47adb880ed965437a3d608e"
 dependencies = [
  "chrono",
  "doc-comment",

Cargo.toml

@@ -10,8 +10,8 @@ build = "build.rs"
 
 [dependencies]
 #elefren = { version = "0.22.0", features = ["toml"] }
-#elefren = { path = "../elefren22-fork" }
-elefren = { git = "https://git.ondrovo.com/MightyPork/elefren-fork.git" }
+elefren = { path = "../elefren22-fork" }
+#elefren = { git = "https://git.ondrovo.com/MightyPork/elefren-fork.git" }
 
 env_logger = "0.9.0"
 

src/command.rs

@@ -3,22 +3,54 @@ use regex::Regex;
 
 #[derive(Debug, Clone, PartialEq)]
 pub enum StatusCommand {
-    Boost,
+    /// Ignore this post
     Ignore,
+    /// Boost the previous post in the thread
+    Boost,
+    /// Admin: Ban a user
     BanUser(String),
+    /// Admin: Un-ban a server
     UnbanUser(String),
+    /// Admin: Ban a server
     BanServer(String),
+    /// Admin: Un-ban a server
     UnbanServer(String),
+    /// Admin: Add a member to a closed group (or force join)
     AddMember(String),
+    /// Admin: Remove a user from the group, also unfollow
     RemoveMember(String),
+    /// Admin: Add a hashtag to the group
+    AddTag(String),
+    /// Admin: Remove a hashtag from the group
+    RemoveTag(String),
+    /// Admin: Give admin to a user
     GrantAdmin(String),
+    /// Admin: Revoke admin to a user
     RemoveAdmin(String),
+    /// Admin: Send a public announcement
     Announce(String),
+    /// Admin: Make the group open-access
     OpenGroup,
+    /// Admin: Make the group member-only, this effectively disables posting from non-members
+    /// and disables /join and follow-back
     CloseGroup,
+    /// Show help. The content varies by group params (open/closed access), the user's privileges
+    /// and membership status.
     Help,
+    /// Show members. Non-admins will only see a list of admins.
     ListMembers,
+    /// Show tags.
+    ListTags,
+    /// Leave the group, this asks the group to unfollow the user and also revokes their membership.
     Leave,
+    /// Join a public group. This is normally not needed, as the group follows back and adds followers as members.
+    /// Manual join is useful when the follow somehow fails, or when the user wants to be able to
+    /// post without receiving the group's posts (naughty!)
+    ///
+    /// In member-only groups, this will just DM the user some info on how to get added.
+    Join,
+    /// The group will DM "Pong" back, this is to test that the daemon is running and also that the
+    /// user is not banned and federates.
     Ping,
 }
 
@@ -27,12 +59,19 @@ macro_rules! p_user {
         r"(@?[a-zA-Z0-9_.-]+@[a-zA-Z0-9_.-]+\.[a-z0-9_-]+|@[a-zA-Z0-9_.-]+)"
     };
 }
+
 macro_rules! p_server {
     () => {
         r"([a-zA-Z0-9_.-]+\.[a-zA-Z0-9_-]+)"
     };
 }
 
+macro_rules! p_hashtag {
+    () => {
+        r"#(\w+)"
+    };
+}
+
 macro_rules! command {
     ($($val:expr),+) => {
         Regex::new(concat!(r"(?:^|\s|>|\n)[\\/]", $($val,)+ r"(?:$|[!,]|\W)")).unwrap()
@@ -55,6 +94,10 @@ static RE_ADD_MEMBER: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"(?:
 
 static RE_REMOVE_MEMBER: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"(?:kick|remove)\s+", p_user!()));
 
+static RE_ADD_TAG: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"(?:add)\s+", p_hashtag!()));
+
+static RE_REMOVE_TAG: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"(?:remove)\s+", p_hashtag!()));
+
 static RE_GRANT_ADMIN: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"(?:op|admin)\s+", p_user!()));
 
 static RE_REVOKE_ADMIN: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"(?:deop|deadmin)\s+", p_user!()));
@@ -67,14 +110,37 @@ static RE_HELP: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"help"));
 
 static RE_MEMBERS: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"(?:members|who)"));
 
+static RE_TAGS: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"(?:hashtags|tags)"));
+
 static RE_LEAVE: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"(?:leave)"));
 
+static RE_JOIN: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"(?:join)"));
+
 static RE_PING: once_cell::sync::Lazy<Regex> = Lazy::new(|| command!(r"(?:ping)"));
 
 static RE_ANNOUNCE: once_cell::sync::Lazy<Regex> =
     Lazy::new(|| Regex::new(concat!(r"(?:^|\s|>|\n)[\\/]announce\s+(.*)$")).unwrap());
 
-pub fn parse_status(content: &str) -> Vec<StatusCommand> {
+static RE_A_HASHTAG: once_cell::sync::Lazy<Regex> =
+    Lazy::new(|| Regex::new(concat!(r"\b#(\w+)")).unwrap());
+
+pub fn parse_status_tags(content: &str) -> Vec<String> {
+    debug!("Raw content: {}", content);
+    let content = content.replace("<br/>", " ");
+    let content = voca_rs::strip::strip_tags(&content);
+    debug!("Stripped tags: {}", content);
+
+    let mut tags = vec![];
+    for c in RE_A_HASHTAG.captures_iter(&content) {
+        if let Some(s) = c.get(1) {
+            tags.push(s.as_str().to_string())
+        }
+    }
+
+    tags
+}
+
+pub fn parse_slash_commands(content: &str) -> Vec<StatusCommand> {
     debug!("Raw content: {}", content);
 
     let content = content.replace("<br/>", " ");
@@ -111,6 +177,9 @@ pub fn parse_status(content: &str) -> Vec<StatusCommand> {
     if RE_LEAVE.is_match(&content) {
         debug!("LEAVE");
         commands.push(StatusCommand::Leave);
+    } else if RE_JOIN.is_match(&content) {
+        debug!("JOIN");
+        commands.push(StatusCommand::Join);
     }
 
     if RE_PING.is_match(&content) {
@@ -123,6 +192,11 @@ pub fn parse_status(content: &str) -> Vec<StatusCommand> {
         commands.push(StatusCommand::ListMembers);
     }
 
+    if RE_TAGS.is_match(&content) {
+        debug!("TAGS");
+        commands.push(StatusCommand::ListTags);
+    }
+
     if RE_OPEN_GROUP.is_match(&content) {
         debug!("OPEN GROUP");
         commands.push(StatusCommand::OpenGroup);
@@ -188,11 +262,27 @@ pub fn parse_status(content: &str) -> Vec<StatusCommand> {
         if let Some(s) = c.get(1) {
             let s = s.as_str();
             let s = s.trim_start_matches('@');
-            debug!("UNBAN USER: {}", s);
+            debug!("REMOVE USER: {}", s);
             commands.push(StatusCommand::RemoveMember(s.to_owned()));
         }
     }
 
+    for c in RE_ADD_TAG.captures_iter(&content) {
+        if let Some(s) = c.get(1) {
+            let s = s.as_str();
+            debug!("ADD TAG: {}", s);
+            commands.push(StatusCommand::AddTag(s.to_owned()));
+        }
+    }
+
+    for c in RE_REMOVE_TAG.captures_iter(&content) {
+        if let Some(s) = c.get(1) {
+            let s = s.as_str();
+            debug!("REMOVE TAG: {}", s);
+            commands.push(StatusCommand::RemoveTag(s.to_owned()));
+        }
+    }
+
     for c in RE_GRANT_ADMIN.captures_iter(&content) {
         if let Some(s) = c.get(1) {
             let s = s.as_str();
@@ -216,11 +306,11 @@ pub fn parse_status(content: &str) -> Vec<StatusCommand> {
 
 #[cfg(test)]
 mod test {
-    use crate::command::{parse_status, StatusCommand};
+    use crate::command::{parse_slash_commands, StatusCommand, RE_JOIN, RE_ADD_TAG, RE_A_HASHTAG};
 
     use super::{
         RE_ADD_MEMBER, RE_ANNOUNCE, RE_BAN_SERVER, RE_BAN_USER, RE_BOOST, RE_CLOSE_GROUP, RE_GRANT_ADMIN, RE_HELP,
-        RE_IGNORE, RE_LEAVE, RE_MEMBERS, RE_OPEN_GROUP, RE_REMOVE_MEMBER, RE_REVOKE_ADMIN,
+        RE_IGNORE, RE_LEAVE, RE_MEMBERS, RE_TAGS, RE_OPEN_GROUP, RE_REMOVE_MEMBER, RE_REVOKE_ADMIN,
     };
 
     #[test]
@@ -276,23 +366,18 @@ mod test {
         assert!(RE_BAN_USER.is_match("/ban @LAIN@PleromA.soykaf.com"));
 
         let c = RE_BAN_USER.captures("/ban lain@pleroma.soykaf.com");
-        assert!(c.is_some());
         assert_eq!(c.unwrap().get(1).unwrap().as_str(), "lain@pleroma.soykaf.com");
 
         let c = RE_BAN_USER.captures("/ban lain@pleroma.soykaf.com xx");
-        assert!(c.is_some());
         assert_eq!(c.unwrap().get(1).unwrap().as_str(), "lain@pleroma.soykaf.com");
 
         let c = RE_BAN_USER.captures("/ban @lain@pleroma.soykaf.com");
-        assert!(c.is_some());
         assert_eq!(c.unwrap().get(1).unwrap().as_str(), "@lain@pleroma.soykaf.com");
 
         let c = RE_BAN_USER.captures("/ban @lain");
-        assert!(c.is_some());
         assert_eq!(c.unwrap().get(1).unwrap().as_str(), "@lain");
 
         let c = RE_BAN_USER.captures("/ban @lain xx");
-        assert!(c.is_some());
         assert_eq!(c.unwrap().get(1).unwrap().as_str(), "@lain");
     }
 
@@ -306,11 +391,9 @@ mod test {
         assert!(!RE_BAN_SERVER.is_match("/ban @pleroma.soykaf.com"));
 
         let c = RE_BAN_SERVER.captures("/ban pleroma.soykaf.com");
-        assert!(c.is_some());
         assert_eq!(c.unwrap().get(1).unwrap().as_str(), "pleroma.soykaf.com");
 
         let c = RE_BAN_SERVER.captures("/ban pleroma.soykaf.com xx");
-        assert!(c.is_some());
         assert_eq!(c.unwrap().get(1).unwrap().as_str(), "pleroma.soykaf.com");
     }
 
@@ -321,7 +404,6 @@ mod test {
         assert!(RE_ADD_MEMBER.is_match("\\add @lain"));
 
         let c = RE_ADD_MEMBER.captures("/add @lain");
-        assert!(c.is_some());
         assert_eq!(c.unwrap().get(1).unwrap().as_str(), "@lain");
     }
 
@@ -337,10 +419,34 @@ mod test {
         assert!(RE_REMOVE_MEMBER.is_match("/remove @lain"));
 
         let c = RE_REMOVE_MEMBER.captures("/kick lain@pleroma.soykaf.com");
-        assert!(c.is_some());
         assert_eq!(c.unwrap().get(1).unwrap().as_str(), "lain@pleroma.soykaf.com");
     }
 
+    #[test]
+    fn test_add_member() {
+        assert!(RE_ADD_TAG.is_match("/add #breadposting"));
+        assert!(RE_ADD_TAG.is_match("/add #čučkaři"));
+        assert!(RE_ADD_TAG.is_match("/add #χαλβάς"));
+        assert!(RE_ADD_TAG.is_match("\\add #ласточка"));
+        assert!(RE_ADD_TAG.is_match("/add #nya."));
+        assert!(RE_ADD_TAG.is_match("/add #nya)"));
+
+        let c = RE_ADD_TAG.captures("/add #breadposting");
+        assert_eq!(c.unwrap().get(1).unwrap().as_str(), "breadposting");
+
+        let c = RE_ADD_TAG.captures("/add #χαλβάς");
+        assert_eq!(c.unwrap().get(1).unwrap().as_str(), "χαλβάς");
+
+        let c = RE_ADD_TAG.captures("/add #ласточка");
+        assert_eq!(c.unwrap().get(1).unwrap().as_str(), "ласточка");
+
+        let c = RE_ADD_TAG.captures("#nya.");
+        assert_eq!(c.unwrap().get(1).unwrap().as_str(), "nya");
+
+        let c = RE_ADD_TAG.captures("#nya)");
+        assert_eq!(c.unwrap().get(1).unwrap().as_str(), "nya");
+    }
+
     #[test]
     fn test_add_admin() {
         assert!(!RE_GRANT_ADMIN.is_match("/expel lain@pleroma.soykaf.com"));
@@ -350,7 +456,6 @@ mod test {
         assert!(RE_GRANT_ADMIN.is_match("\\op @lain"));
 
         let c = RE_GRANT_ADMIN.captures("/op @lain@pleroma.soykaf.com");
-        assert!(c.is_some());
         assert_eq!(c.unwrap().get(1).unwrap().as_str(), "@lain@pleroma.soykaf.com");
     }
 
@@ -362,7 +467,6 @@ mod test {
         assert!(RE_REVOKE_ADMIN.is_match("/deadmin @lain"));
 
         let c = RE_REVOKE_ADMIN.captures("/deadmin @lain");
-        assert!(c.is_some());
         assert_eq!(c.unwrap().get(1).unwrap().as_str(), "@lain");
     }
 
@@ -405,6 +509,27 @@ mod test {
         assert!(RE_MEMBERS.is_match("/who"));
     }
 
+    #[test]
+    fn test_members() {
+        assert!(!RE_TAGS.is_match("/members"));
+        assert!(RE_TAGS.is_match("/hashtags"));
+        assert!(RE_TAGS.is_match("dsfsd /tags dfgd d"));
+    }
+
+    #[test]
+    fn test_match_tag() {
+        assert!(!RE_A_HASHTAG.is_match("banana sdfsdf sdfsd fdsf sd"));
+        assert!(RE_A_HASHTAG.is_match("#banana"));
+        assert!(RE_A_HASHTAG.is_match("#ласточка"));
+        assert!(RE_A_HASHTAG.is_match("#χαλβάς"));
+        assert!(RE_A_HASHTAG.is_match("foo #banana gfdfgd"));
+
+        let c = RE_GRANT_ADMIN.captures("foo #banana #χαλβάς #ласточка.");
+        assert_eq!(c.unwrap().get(1).unwrap().as_str(), "banana");
+        assert_eq!(c.unwrap().get(2).unwrap().as_str(), "χαλβάς");
+        assert_eq!(c.unwrap().get(3).unwrap().as_str(), "ласточка");
+    }
+
     #[test]
     fn test_leave() {
         assert!(!RE_LEAVE.is_match("/list"));
@@ -414,6 +539,15 @@ mod test {
         assert!(RE_LEAVE.is_match("/leave z"));
     }
 
+    #[test]
+    fn test_leave() {
+        assert!(!RE_JOIN.is_match("/list"));
+        assert!(RE_JOIN.is_match("/join"));
+        assert!(RE_JOIN.is_match("/join"));
+        assert!(RE_JOIN.is_match("x /join"));
+        assert!(RE_JOIN.is_match("/join z"));
+    }
+
     #[test]
     fn test_announce() {
         assert!(!RE_ANNOUNCE.is_match("/list"));
@@ -435,15 +569,15 @@ mod test {
     fn test_real_post() {
         assert_eq!(
             Vec::<StatusCommand>::new(),
-            parse_status("Hello there is nothing here /fake command")
+            parse_slash_commands("Hello there is nothing here /fake command")
         );
         assert_eq!(
             vec![StatusCommand::Help],
-            parse_status("lets see some \\help and /ban @lain")
+            parse_slash_commands("lets see some \\help and /ban @lain")
         );
         assert_eq!(
             vec![StatusCommand::Ignore],
-            parse_status("lets see some /ignore and /ban @lain")
+            parse_slash_commands("lets see some /ignore and /ban @lain")
         );
         assert_eq!(
             vec![
@@ -451,7 +585,7 @@ mod test {
                 StatusCommand::BanUser("piggo@piggo.space".to_string()),
                 StatusCommand::BanServer("soykaf.com".to_string())
             ],
-            parse_status("let's /ban @lain! /ban @piggo@piggo.space and also /ban soykaf.com")
+            parse_slash_commands("let's /ban @lain! /ban @piggo@piggo.space and also /ban soykaf.com")
         );
     }
 
@@ -459,13 +593,13 @@ mod test {
     fn test_strip() {
         assert_eq!(
             vec![StatusCommand::BanUser("betty".to_string())],
-            parse_status(
+            parse_slash_commands(
                 r#"Let's bad the naughty bot: /ban <span class="h-card"><a class="u-url mention" data-user="9nXpaGZL88fPAiP8xU" href="https://piggo.space/users/betty" rel="ugc">@<span>betty</span></a></span>"#
             )
         );
         assert_eq!(
             vec![StatusCommand::BanUser("betty@abstarbauze.com".to_string())],
-            parse_status(
+            parse_slash_commands(
                 r#"Let's bad the naughty bot: /ban <span class="h-card"><a class="u-url mention" data-user="9nXpaGZL88fPAiP8xU" href="https://piggo.space/users/betty" rel="ugc">@<span>betty@abstarbauze.com</span></a></span>"#
             )
         );

src/group_handle.rs

@@ -2,19 +2,21 @@ use std::collections::HashSet;
 use std::sync::Arc;
 use std::time::{Duration, Instant};
 
+use elefren::{FediClient, StatusBuilder};
 use elefren::debug::EventDisplay;
 use elefren::debug::NotificationDisplay;
+use elefren::debug::StatusDisplay;
 use elefren::entities::event::Event;
 use elefren::entities::notification::{Notification, NotificationType};
+use elefren::entities::status::Status;
 use elefren::status_builder::Visibility;
-use elefren::{FediClient, StatusBuilder};
 use futures::StreamExt;
 
 use crate::command::StatusCommand;
 use crate::error::GroupError;
-use crate::store::data::GroupConfig;
 use crate::store::ConfigStore;
-use crate::utils::{normalize_acct, LogError};
+use crate::store::data::GroupConfig;
+use crate::utils::{LogError, normalize_acct};
 
 /// This is one group's config store capable of persistence
 #[derive(Debug)]
@@ -27,6 +29,9 @@ pub struct GroupHandle {
 const DELAY_BEFORE_ACTION: Duration = Duration::from_millis(250);
 const DELAY_REOPEN_STREAM: Duration = Duration::from_millis(1000);
 const MAX_CATCHUP_NOTIFS: usize = 25;
+// also statuses
+const MAX_CATCHUP_STATUSES: usize = 100;
+// higher because we can expect a lot of non-hashtag statuses here
 const PERIODIC_SAVE: Duration = Duration::from_secs(60);
 const PING_INTERVAL: Duration = Duration::from_secs(15); // must be < periodic save!
 
@@ -45,6 +50,7 @@ impl GroupHandle {
         Ok(())
     }
 
+    /*
     pub async fn reload(&mut self) -> Result<(), GroupError> {
         if let Some(g) = self.store.get_group_config(self.config.get_acct()).await {
             self.config = g;
@@ -53,6 +59,7 @@ impl GroupHandle {
             Err(GroupError::GroupNotExist)
         }
     }
+    */
 }
 
 trait NotifTimestamp {
@@ -65,6 +72,14 @@ impl NotifTimestamp for Notification {
     }
 }
 
+impl NotifTimestamp for Status {
+    fn timestamp_millis(&self) -> u64 {
+        // this may not work well for unseen status tracking,
+        // if ancient statuses were to appear in the timeline :(
+        self.created_at.timestamp_millis().max(0) as u64
+    }
+}
+
 impl GroupHandle {
     pub async fn run(&mut self) -> Result<(), GroupError> {
         assert!(PERIODIC_SAVE >= PING_INTERVAL);
@@ -89,6 +104,20 @@ impl GroupHandle {
                 }
             }
 
+            match self.catch_up_with_missed_statuses().await {
+                Ok(true) => {
+                    debug!("Some missed statuses handled");
+                    // Save asap!
+                    next_save = Instant::now() - PERIODIC_SAVE
+                }
+                Ok(false) => {
+                    debug!("No statuses missed");
+                }
+                Err(e) => {
+                    error!("Failed to handle missed statuses: {}", e);
+                }
+            }
+
             loop {
                 if next_save < Instant::now() {
                     self.save_if_needed().await.log_error("Failed to save group");
@@ -104,7 +133,9 @@ impl GroupHandle {
                     Ok(Some(event)) => {
                         debug!("(@{}) Event: {}", self.config.get_acct(), EventDisplay(&event));
                         match event {
-                            Event::Update(_status) => {}
+                            Event::Update(status) => {
+                                self.handle_status(status).await.log_error("Error handling a status");
+                            }
                             Event::Notification(n) => {
                                 self.handle_notification(n).await.log_error("Error handling a notification");
                             }
@@ -156,7 +187,7 @@ impl GroupHandle {
                         return Ok(());
                     }
 
-                    let commands = crate::command::parse_status(&status.content);
+                    let commands = crate::command::parse_slash_commands(&status.content);
 
                     let mut replies = vec![];
                     let mut announcements = vec![];
@@ -205,6 +236,9 @@ impl GroupHandle {
                                                     any_admin_cmd = true;
                                                     replies.push(format!("User {} banned from group!", u));
 
+                                                    self.unfollow_user(&u).await
+                                                        .log_error("Failed to unfollow");
+
                                                     // no announcement here
                                                 }
                                                 Err(e) => {
@@ -280,11 +314,7 @@ impl GroupHandle {
                                                 Ok(_) => {
                                                     any_admin_cmd = true;
                                                     replies.push(format!("User {} added to the group!", u));
-
-                                                    if self.config.is_member_only() {
-                                                        announcements
-                                                            .push(format!("Welcome new member @{} to the group!", u));
-                                                    }
+                                                    self.follow_user(&u).await.log_error("Failed to follow");
                                                 }
                                                 Err(e) => {
                                                     replies.push(format!("Failed to add user {} to group: {}", u, e));
@@ -303,6 +333,9 @@ impl GroupHandle {
                                                 Ok(_) => {
                                                     any_admin_cmd = true;
                                                     replies.push(format!("User {} removed from the group.", u));
+
+                                                    self.unfollow_user(&u).await
+                                                        .log_error("Failed to unfollow");
                                                 }
                                                 Err(_) => {
                                                     unreachable!()
@@ -313,12 +346,33 @@ impl GroupHandle {
                                         replies.push("Only admins can manage members".to_string());
                                     }
                                 }
+                                StatusCommand::AddTag(tag) => {
+                                    if is_admin {
+                                        any_admin_cmd = true;
+                                        self.config.add_tag(&tag);
+                                        replies.push(format!("Tag #{} added to the group!", tag));
+                                    } else {
+                                        replies.push("Only admins can manage group tags".to_string());
+                                    }
+                                }
+                                StatusCommand::RemoveTag(tag) => {
+                                    if is_admin {
+                                        any_admin_cmd = true;
+                                        self.config.remove_tag(&tag);
+                                        replies.push(format!("Tag #{} removed from the group!", tag));
+                                    } else {
+                                        replies.push("Only admins can manage group tags".to_string());
+                                    }
+                                }
                                 StatusCommand::GrantAdmin(u) => {
                                     let u = normalize_acct(&u, &group_acct)?;
                                     if is_admin {
                                         if !self.config.is_admin(&u) {
                                             match self.config.set_admin(&u, true) {
                                                 Ok(_) => {
+                                                    // try to make the config a little more sane, admins should be members
+                                                    let _ = self.config.set_member(&u, true);
+
                                                     any_admin_cmd = true;
                                                     replies.push(format!("User {} is now a group admin!", u));
                                                     announcements
@@ -409,12 +463,13 @@ impl GroupHandle {
                                         **Supported commands:**\n\
                                         `/boost, /b` - boost the replied-to post into the group\n\
                                         `/ignore, /i` - make the group completely ignore the post\n\
-                                        `/ping` - check that the service is alive".to_string(),
+                                        `/ping` - check that the service is alive\n\
+                                        `/join` - join the group\n\
+                                        `/leave` - leave the group".to_string(),
                                     );
 
                                     if self.config.is_member_only() {
                                         replies.push("`/members, /who` - show group members / admins".to_string());
-                                        replies.push("`/leave` - leave the group".to_string());
                                     } else {
                                         replies.push("`/members, /who` - show group admins".to_string());
                                     }
@@ -441,18 +496,7 @@ impl GroupHandle {
                                     if is_admin {
                                         if self.config.is_member_only() {
                                             replies.push("Group members:".to_string());
-                                            let admins = self.config.get_admins().collect::<HashSet<_>>();
-                                            let mut members = self.config.get_members().collect::<Vec<_>>();
-                                            members.extend(admins.iter());
-                                            members.sort();
-                                            members.dedup();
-                                            for m in members {
-                                                if admins.contains(&m) {
-                                                    replies.push(format!("{} [admin]", m));
-                                                } else {
-                                                    replies.push(m.to_string());
-                                                }
-                                            }
+                                            self.list_members(&mut replies);
                                         } else {
                                             show_admins = true;
                                         }
@@ -462,18 +506,55 @@ impl GroupHandle {
 
                                     if show_admins {
                                         replies.push("Group admins:".to_string());
-                                        let mut admins = self.config.get_admins().collect::<Vec<_>>();
-                                        admins.sort();
-                                        for a in admins {
-                                            replies.push(a.to_string());
-                                        }
+                                        self.list_admins(&mut replies);
+                                    }
+                                }
+                                StatusCommand::ListTags => {
+                                    replies.push("Group tags:".to_string());
+                                    let mut tags = self.config.get_tags().collect::<Vec<_>>();
+                                    tags.sort();
+                                    for t in tags {
+                                        replies.push(format!("#{}", t));
                                     }
                                 }
                                 StatusCommand::Leave => {
-                                    if self.config.is_member(&notif_acct) {
+                                    if self.config.is_member_or_admin(&notif_acct) {
+                                        // admin can leave but that's a bad idea
+
                                         any_admin_cmd = true;
                                         let _ = self.config.set_member(&notif_acct, false);
-                                        replies.push("You left the group.".to_string());
+                                        replies.push("You're no longer a group member. Unfollow the group user to stop receiving group messages.".to_string());
+
+                                        self.unfollow_user(&notif_acct).await
+                                            .log_error("Failed to unfollow");
+                                    }
+                                }
+                                StatusCommand::Join => {
+                                    if self.config.is_member_or_admin(&notif_acct) {
+                                        // Already a member, so let's try to follow the user
+                                        // again, maybe first time it failed
+                                        self.follow_user(&notif_acct).await
+                                            .log_error("Failed to follow");
+                                    } else {
+                                        // Not a member yet
+                                        if self.config.is_member_only() {
+                                            // No you can't
+                                            replies.push(format!(
+                                                "Hi, this group is closed to new sign-ups.\n\
+                                                Please ask one of the group admins to add you:"));
+                                            self.list_admins(&mut replies);
+                                        } else {
+                                            // Open access
+                                            self.follow_user(&notif_acct).await
+                                                .log_error("Failed to follow");
+
+                                            // This only fails if the user is banned, but that is filtered above
+                                            let _ = self.config.set_member(&notif_acct, true);
+                                            replies.push(format!("\
+                                                Thanks for joining, you are now a member and the group user will \
+                                                follow you so you can use group hashtags. Make sure you follow the \
+                                                group user to receive group messages."));
+                                        }
                                     }
                                 }
                                 StatusCommand::Ping => {
@@ -524,43 +605,106 @@ impl GroupHandle {
             }
             NotificationType::Follow => {
                 info!("New follower!");
-                tokio::time::sleep(Duration::from_millis(500)).await;
 
-                let text = if self.config.is_member_only() {
-                    // Admins are listed without @, so they won't become handles here.
-                    // Tagging all admins would be annoying.
-                    let mut admins = self.config.get_admins().cloned().collect::<Vec<_>>();
-                    admins.sort();
-                    format!(
-                        "@{user} welcome to the group! This is a member-only group, you won't be \
-                         able to post. Ask the group admins if you wish to join!\n\n\
-                         Admins: {admins}",
-                        user = notif_acct,
-                        admins = admins.join(", ")
-                    )
+                if self.config.is_member_or_admin(&notif_acct) {
+                    // Already joined, just doing something silly, ignore this
+                    debug!("User already a member, ignoring");
                 } else {
-                    format!(
-                        "@{user} welcome to the group! \
-                         To share a post, tag the group user. Use /help for more info.",
-                        user = notif_acct
-                    )
-                };
+                    let text = if self.config.is_member_only() {
+                        // Admins are listed without @, so they won't become handles here.
+                        // Tagging all admins would be annoying.
+                        let mut admins = self.config.get_admins().cloned().collect::<Vec<_>>();
+                        admins.sort();
+                        format!(
+                            "@{user} Hi, this is a member-only group, you won't be \
+                            able to post. You can still receive group posts though. If you'd like to join, \
+                            please ask one of the group admins to add you:\n\n\
+                         {admins}",
+                            user = notif_acct,
+                            admins = admins.join(", ")
+                        )
+                    } else {
+                        self.follow_user(&notif_acct).await
+                            .log_error("Failed to follow");
+                        make_welcome_text(&notif_acct)
+                    };
 
-                let post = StatusBuilder::new()
-                    .status(text)
-                    .content_type("text/markdown")
-                    .visibility(Visibility::Direct)
-                    .build()
-                    .expect("error build status");
+                    let post = StatusBuilder::new()
+                        .status(text)
+                        .content_type("text/markdown")
+                        .visibility(Visibility::Direct)
+                        .build()
+                        .expect("error build status");
 
-                let _ = self.client.new_status(post).await.log_error("Failed to post");
+                    tokio::time::sleep(Duration::from_millis(500)).await;
+                    let _ = self.client.new_status(post).await.log_error("Failed to post");
+                }
             }
-            _ => {}
+            NotificationType::Favourite => {}
+            NotificationType::Reblog => {}
         }
 
         Ok(())
     }
 
+    /// Handle a non-mention status
+    async fn handle_status(&mut self, s: Status) -> Result<(), GroupError> {
+        debug!("Handling status #{}", s.id);
+        let ts = s.timestamp_millis();
+        self.config.set_last_status(ts);
+
+        if !s.content.contains('#') {
+            debug!("No tags in status");
+            return Ok(());
+        }
+
+        if s.visibility.is_private() {
+            debug!("Status is direct/private, not boosting");
+            return Ok(());
+        }
+
+        if s.content.contains("/add ") || s.content.contains("/remove ") {
+            debug!("Discard, looks like a hashtag manipulation command");
+            return Ok(());
+        }
+
+        let gu = self.config.get_acct();
+        let su = normalize_acct(&s.account.acct, gu)?;
+
+        if self.config.is_banned(&su) {
+            debug!("Status author @{} is banned.", su);
+            return Ok(());
+        }
+
+        if !self.config.is_member_or_admin(&su) {
+            debug!("Status author @{} is not a member.", su);
+            return Ok(());
+        }
+
+        let tags = crate::command::parse_status_tags(&s.content);
+        debug!("Tags in status: {:?}", tags);
+
+        for t in tags {
+            if self.config.is_tag_followed(&t) {
+                self.client.reblog(&s.id).await
+                    .log_error("Failed to reblog");
+                break;
+            }
+        }
+
+        Ok(())
+    }
+
+    async fn follow_user(&mut self, acct: &str) -> Result<(), GroupError> {
+        self.client.follow(acct).await?;
+        Ok(())
+    }
+
+    async fn unfollow_user(&mut self, acct: &str) -> Result<(), GroupError> {
+        self.client.unfollow(acct).await?;
+        Ok(())
+    }
+
     /// Catch up with missed notifications, returns true if any were handled
     async fn catch_up_with_missed_notifications(&mut self) -> Result<bool, GroupError> {
         let last_notif = self.config.get_last_notif();
@@ -601,4 +745,92 @@ impl GroupHandle {
 
         Ok(true)
     }
+
+    /// Catch up with missed statuses, returns true if any were handled
+    async fn catch_up_with_missed_statuses(&mut self) -> Result<bool, GroupError> {
+        let last_status = self.config.get_last_status();
+
+        let notifications = self.client.get_home_timeline().await?;
+        let mut iter = notifications.items_iter();
+
+        let mut statuses_to_handle = vec![];
+
+        // They are retrieved newest first, but we want oldest first for chronological handling
+
+        let mut num = 0;
+        while let Some(s) = iter.next_item().await {
+            let ts = s.timestamp_millis();
+
+            if ts <= last_status {
+                break; // reached our last seen status (hopefully there arent any retro-bumped)
+            }
+            if s.content.contains('#') && !s.visibility.is_private() {
+                statuses_to_handle.push(s);
+            }
+            num += 1;
+            if num > MAX_CATCHUP_STATUSES {
+                warn!("Too many statuses missed to catch up!");
+                break;
+            }
+        }
+
+        if statuses_to_handle.is_empty() {
+            return Ok(false);
+        }
+
+        statuses_to_handle.reverse();
+
+        debug!("{} statuses to catch up!", statuses_to_handle.len());
+
+        for s in statuses_to_handle {
+            debug!("Handling missed status: {}", StatusDisplay(&s));
+            self.handle_status(s).await
+                .log_error("Error handling a status");
+        }
+
+        Ok(true)
+    }
+
+    fn list_admins(&self, replies: &mut Vec<String>) {
+        let mut admins = self.config.get_admins().collect::<Vec<_>>();
+        admins.sort();
+        for a in admins {
+            replies.push(a.to_string());
+        }
+    }
+
+    fn list_members(&self, replies: &mut Vec<String>) {
+        let admins = self.config.get_admins().collect::<HashSet<_>>();
+        let mut members = self.config.get_members().collect::<Vec<_>>();
+        members.extend(admins.iter());
+        members.sort();
+        members.dedup();
+        for m in members {
+            if admins.contains(&m) {
+                replies.push(format!("{} [admin]", m));
+            } else {
+                replies.push(m.to_string());
+            }
+        }
+    }
+}
+
+fn make_welcome_text(user: &str) -> String {
+    format!(
+        "@{user} Welcome to the group! To share a post, tag the group user \
+        or use one of the group hashtags. Use /help for more info.",
+        user = user
+    )
+}
+
+
+trait VisExt: Copy {
+    /// Check if is private or direct
+    fn is_private(self) -> bool;
+}
+
+impl VisExt for Visibility {
+    fn is_private(self) -> bool {
+        self == Visibility::Direct || self == Visibility::Private
+    }
 }

src/store/data.rs

@@ -33,6 +33,8 @@ pub(crate) struct GroupConfig {
     acct: String,
     /// elefren data
     appdata: AppData,
+    /// Hashtags the group will auto-boost from it's members
+    group_tags: HashSet<String>,
     /// List of admin account "acct" names, e.g. piggo@piggo.space
     admin_users: HashSet<String>,
     /// List of users allowed to post to the group, if it is member-only
@@ -43,9 +45,10 @@ pub(crate) struct GroupConfig {
     member_only: bool,
     /// Banned domain names, e.g. kiwifarms.cc
     banned_servers: HashSet<String>,
-    /// Last seen notification timestamp
+    /// Last seen notification timestamp (millis)
     last_notif_ts: u64,
-
+    /// Last seen status timestamp (millis)
+    last_status_ts: u64,
     #[serde(skip)]
     dirty: bool,
 }
@@ -62,12 +65,14 @@ impl Default for GroupConfig {
                 redirect: Default::default(),
                 token: Default::default(),
             },
+            group_tags: Default::default(),
             admin_users: Default::default(),
             member_users: Default::default(),
             banned_users: Default::default(),
             member_only: false,
             banned_servers: Default::default(),
             last_notif_ts: 0,
+            last_status_ts: 0,
             dirty: false,
         }
     }
@@ -86,10 +91,12 @@ impl GroupConfig {
         self.enabled
     }
 
+    /*
     pub(crate) fn set_enabled(&mut self, ena: bool) {
         self.enabled = ena;
         self.mark_dirty();
     }
+    */
 
     pub(crate) fn get_appdata(&self) -> &AppData {
         &self.appdata
@@ -108,6 +115,10 @@ impl GroupConfig {
         self.member_users.iter()
     }
 
+    pub(crate) fn get_tags(&self) -> impl Iterator<Item = &String> {
+        self.group_tags.iter()
+    }
+
     pub(crate) fn set_last_notif(&mut self, ts: u64) {
         self.last_notif_ts = self.last_notif_ts.max(ts);
         self.mark_dirty();
@@ -117,6 +128,15 @@ impl GroupConfig {
         self.last_notif_ts
     }
 
+    pub(crate) fn set_last_status(&mut self, ts: u64) {
+        self.last_status_ts = self.last_status_ts.max(ts);
+        self.mark_dirty();
+    }
+
+    pub(crate) fn get_last_status(&self) -> u64 {
+        self.last_status_ts
+    }
+
     pub(crate) fn get_acct(&self) -> &str {
         &self.acct
     }
@@ -129,6 +149,11 @@ impl GroupConfig {
         self.member_users.contains(acct)
     }
 
+    pub(crate) fn is_member_or_admin(&self, acct: &str) -> bool {
+        self.is_member(acct)
+            || self.is_admin(acct)
+    }
+
     pub(crate) fn is_banned(&self, acct: &str) -> bool {
         self.banned_users.contains(acct) || self.is_users_server_banned(acct)
     }
@@ -205,6 +230,20 @@ impl GroupConfig {
         Ok(())
     }
 
+    pub(crate) fn add_tag(&mut self, tag: &str) {
+        self.group_tags.insert(tag.to_string());
+        self.mark_dirty();
+    }
+
+    pub(crate) fn remove_tag(&mut self, tag: &str) {
+        self.group_tags.remove(tag);
+        self.mark_dirty();
+    }
+
+    pub(crate) fn is_tag_followed(&self, tag: &str) -> bool {
+        self.group_tags.contains(tag)
+    }
+
     pub(crate) fn set_member_only(&mut self, member_only: bool) {
         self.member_only = member_only;
         self.mark_dirty();

src/store/mod.rs

@@ -148,10 +148,12 @@ impl ConfigStore {
             .collect()
     }
 
+    /*
     pub(crate) async fn get_group_config(&self, group: &str) -> Option<GroupConfig> {
         let c = self.data.read().await;
         c.get_group_config(group).cloned()
     }
+    */
 
     //noinspection RsSelfConvention
     /// Set group config to the store. The store then saved.