From b0cfd10b80443d3f67d263ff4db177bb53cc90ed Mon Sep 17 00:00:00 2001
From: Igor Soarez <igor@soarez.org>
Date: Fri, 30 Oct 2026 17:27:21 +0200
Subject: reload pi agents on an old extension: versioned extension, control
 socket, menu item and reload-agents

---
 crates/dinggerd/src/main.rs | 50 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

(limited to 'crates/dinggerd/src/main.rs')

diff --git a/crates/dinggerd/src/main.rs b/crates/dinggerd/src/main.rs
index 2c36198..1fc5cd2 100644
--- a/crates/dinggerd/src/main.rs
+++ b/crates/dinggerd/src/main.rs
@@ -90,6 +90,11 @@ enum Command {
         #[arg(long)]
         pane: Option<String>,
     },
+    /// Reload the pi agents that run an old dingger extension: those idle
+    /// and off screen now, the others once they are (a reload while busy,
+    /// or with a draft in the input box, waits). Until all are reloaded or
+    /// the daemon restarts.
+    ReloadAgents,
     /// Restore tmux sessions saved before tmux last stopped (a crash,
     /// shutdown, or kill-server): windows, panes, layouts, directories.
     /// Only adds what is missing; a bare session of the same name (what a
@@ -166,6 +171,7 @@ fn main() {
             no_sounds,
             no_notifications,
         } => {
+            integrations::update_pi_extension();
             if let Err(err) = hooks::spawn_listener() {
                 eprintln!("dingger: {err}");
                 std::process::exit(1);
@@ -208,6 +214,12 @@ fn main() {
                 std::process::exit(1);
             }
         }
+        Command::ReloadAgents => {
+            if let Err(err) = reload_agents() {
+                eprintln!("dingger: {err}");
+                std::process::exit(1);
+            }
+        }
         Command::Poke => {
             // Best effort: a stopped watcher just means nothing to wake.
             let _ = hooks::poke();
@@ -355,6 +367,44 @@ fn set_importance(level: Option<&str>, pane: Option<String>) -> Result<(), Strin
     Ok(())
 }
 
+/// `dingger reload-agents`: ask the daemon to reload the agents on an old
+/// extension; report what happened within a few seconds.
+fn reload_agents() -> Result<(), String> {
+    let count = |name: &str| tmux::show_global(name).and_then(|v| v.trim().parse::<usize>().ok()).unwrap_or(0);
+    let by_hand = count("@dingger_outdated_by_hand");
+    let by_hand_note = || {
+        if by_hand > 0 {
+            let agents = if by_hand == 1 { "agent runs" } else { "agents run" };
+            println!("{by_hand} {agents} an extension too old to reload this way: type /reload in each");
+        }
+    };
+    let before = count("@dingger_outdated");
+    if before == 0 {
+        if by_hand == 0 {
+            println!("every pi agent runs the current dingger extension");
+        }
+        by_hand_note();
+        return Ok(());
+    }
+    if !integrations::pi_extension_installed_is_current() {
+        return Err("the installed pi extension is not this dingger's, so a reload would load the old one again: run `dingger install pi` first".into());
+    }
+    hooks::send(r#"{"method":"agents.reload_outdated"}"#)?;
+    let deadline = std::time::Instant::now() + std::time::Duration::from_secs(5);
+    let mut left = before;
+    while left > 0 && std::time::Instant::now() < deadline {
+        std::thread::sleep(std::time::Duration::from_millis(200));
+        left = count("@dingger_outdated");
+    }
+    let agents = |n: usize| if n == 1 { "agent" } else { "agents" };
+    println!("reloaded {} of {before} {} on an old dingger extension", before.saturating_sub(left), agents(before));
+    if left > 0 {
+        println!("the other {left} reload once idle and off screen, with an empty input box");
+    }
+    by_hand_note();
+    Ok(())
+}
+
 /// `dingger unread`: ask the daemon to mark the pane's idle agent unread,
 /// and wait until it shows as done.
 fn mark_unread(pane: Option<String>) -> Result<(), String> {
-- 
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