HostServ: vhost OFFER menu, plus SETALL/DELALL/GROUP

A curated self-serve menu: operators OFFER <host> / OFFERDEL <n>, anyone
sees OFFERLIST, and a user picks one with TAKE <n> (assigned and applied
at once). Offers are a global event-sourced list (VhostOfferAdded/Removed,
threaded through apply like bots). SETALL/DELALL alias SET/DEL and GROUP
is a no-op reassurance, since the per-account vhost already covers every
grouped nick.

hostserv/src/lib.rs

@@ -21,6 +21,10 @@ mod request;
 mod waiting;
 #[path = "approve.rs"]
 mod approve;
+#[path = "offer.rs"]
+mod offer;
+#[path = "take.rs"]
+mod take;
 
 pub struct HostServ {
     pub uid: String,
@@ -42,14 +46,21 @@ impl Service for HostServ {
         match args.first().map(|s| s.to_ascii_uppercase()).as_deref() {
             Some("ON") => on::handle(me, from, ctx, db),
             Some("OFF") => off::handle(me, from, ctx, net, db),
-            Some("SET") => set::handle(me, from, args, ctx, net, db),
-            Some("DEL") => del::handle(me, from, args, ctx, net, db),
+            // SET(ALL)/DEL(ALL): the per-account model already covers every
+            // grouped nick, so ALL is an alias, and GROUP is a no-op reassurance.
+            Some("SET") | Some("SETALL") => set::handle(me, from, args, ctx, net, db),
+            Some("DEL") | Some("DELALL") => del::handle(me, from, args, ctx, net, db),
+            Some("GROUP") => ctx.notice(me, from.uid, "Your vhost already applies to all your grouped nicks — nothing to sync."),
             Some("LIST") => list::handle(me, from, ctx, db),
             Some("REQUEST") => request::handle(me, from, args, ctx, db),
             Some("WAITING") => waiting::handle(me, from, ctx, db),
             Some("ACTIVATE") | Some("APPROVE") => approve::handle(me, from, args, ctx, net, db, true),
             Some("REJECT") => approve::handle(me, from, args, ctx, net, db, false),
-            Some("HELP") | None => ctx.notice(me, from.uid, "HostServ gives you a vhost: \x02ON\x02 activates your assigned vhost, \x02OFF\x02 restores your normal host, \x02REQUEST\x02 <host> asks for one. Operators use \x02SET\x02/\x02DEL\x02 <account>, \x02LIST\x02, and \x02WAITING\x02 + \x02ACTIVATE\x02/\x02REJECT\x02 <account> for requests."),
+            Some("OFFER") => offer::add(me, from, args, ctx, db),
+            Some("OFFERLIST") => offer::list(me, from, ctx, db),
+            Some("OFFERDEL") => offer::del(me, from, args, ctx, db),
+            Some("TAKE") => take::handle(me, from, args, ctx, db),
+            Some("HELP") | None => ctx.notice(me, from.uid, "HostServ gives you a vhost: \x02ON\x02 activates your assigned vhost, \x02OFF\x02 restores your normal host, \x02REQUEST\x02 <host> asks for one, \x02OFFERLIST\x02 + \x02TAKE\x02 <n> pick from the menu. Operators use \x02SET\x02/\x02DEL\x02 <account>, \x02LIST\x02, \x02WAITING\x02 + \x02ACTIVATE\x02/\x02REJECT\x02, and \x02OFFER\x02/\x02OFFERDEL\x02 for the menu."),
             Some(other) => ctx.notice(me, from.uid, format!("I don't know the command \x02{other}\x02. Try \x02HELP\x02.")),
         }
     }

hostserv/src/offer.rs

@@ -0,0 +1,51 @@
+use fedserv_api::{Sender, ServiceCtx, Store};
+
+// OFFER <host>: add a vhost to the self-serve menu (operators).
+pub fn add(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db: &mut dyn Store) {
+    if !super::require_oper(me, from, ctx) {
+        return;
+    }
+    let Some(&host) = args.get(1) else {
+        ctx.notice(me, from.uid, "Syntax: OFFER <host>");
+        return;
+    };
+    if !super::valid_vhost(host) {
+        ctx.notice(me, from.uid, format!("\x02{host}\x02 isn't a valid host."));
+        return;
+    }
+    match db.vhost_offer_add(host) {
+        Ok(true) => ctx.notice(me, from.uid, format!("\x02{host}\x02 is now on the vhost menu.")),
+        Ok(false) => ctx.notice(me, from.uid, "That vhost is already on the menu."),
+        Err(_) => ctx.notice(me, from.uid, "Sorry, that didn't work. Please try again in a moment."),
+    }
+}
+
+// OFFERLIST: show the self-serve vhost menu (anyone).
+pub fn list(me: &str, from: &Sender, ctx: &mut ServiceCtx, db: &dyn Store) {
+    let offers = db.vhost_offers();
+    if offers.is_empty() {
+        ctx.notice(me, from.uid, "No vhosts are on offer.");
+        return;
+    }
+    ctx.notice(me, from.uid, format!("Vhosts on offer ({}):", offers.len()));
+    for (i, host) in offers.iter().enumerate() {
+        ctx.notice(me, from.uid, format!("  {}. {host}", i + 1));
+    }
+    ctx.notice(me, from.uid, "Take one with \x02TAKE\x02 <number>.");
+}
+
+// OFFERDEL <number>: remove an offer from the menu (operators).
+pub fn del(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db: &mut dyn Store) {
+    if !super::require_oper(me, from, ctx) {
+        return;
+    }
+    let Some(n) = args.get(1).and_then(|s| s.parse::<usize>().ok()) else {
+        ctx.notice(me, from.uid, "Syntax: OFFERDEL <number> (see OFFERLIST)");
+        return;
+    };
+    match db.vhost_offer_del(n) {
+        Ok(Some(host)) => ctx.notice(me, from.uid, format!("Removed \x02{host}\x02 from the menu.")),
+        Ok(None) => ctx.notice(me, from.uid, format!("There's no offer #\x02{n}\x02.")),
+        Err(_) => ctx.notice(me, from.uid, "Sorry, that didn't work. Please try again in a moment."),
+    }
+}

hostserv/src/take.rs

@@ -0,0 +1,24 @@
+use fedserv_api::{Sender, ServiceCtx, Store};
+
+// TAKE <number>: assign yourself the vhost offered at that position on the menu.
+pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db: &mut dyn Store) {
+    let Some(account) = from.account else {
+        ctx.notice(me, from.uid, "You need to identify to NickServ first.");
+        return;
+    };
+    let Some(n) = args.get(1).and_then(|s| s.parse::<usize>().ok()) else {
+        ctx.notice(me, from.uid, "Syntax: TAKE <number> (see OFFERLIST)");
+        return;
+    };
+    let Some(host) = n.checked_sub(1).and_then(|i| db.vhost_offers().into_iter().nth(i)) else {
+        ctx.notice(me, from.uid, format!("There's no offer #\x02{n}\x02. See \x02OFFERLIST\x02."));
+        return;
+    };
+    match db.set_vhost(account, &host, "offer") {
+        Ok(()) => {
+            ctx.apply_vhost(from.uid, &host);
+            ctx.notice(me, from.uid, format!("You now have the vhost \x02{host}\x02."));
+        }
+        Err(_) => ctx.notice(me, from.uid, "Sorry, that didn't work. Please try again in a moment."),
+    }
+}