From 0f010a383ae256d7e794c85e4332ee45841625aa Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Sat, 31 Oct 2026 03:56:30 +0100
Subject: move change publisher to own module

---
 src/swarm/sync.rs | 81 -------------------------------------------------------
 1 file changed, 81 deletions(-)

(limited to 'src/swarm/sync.rs')

diff --git a/src/swarm/sync.rs b/src/swarm/sync.rs
index 05c0c34..e89c2e2 100644
--- a/src/swarm/sync.rs
+++ b/src/swarm/sync.rs
@@ -10,7 +10,6 @@ use tokio::sync::mpsc;
 use tokio::time::Instant;
 use tracing::{debug, info, trace, warn};
 
-use crate::document::store::ChangeSet;
 use crate::locks::MutexExt;
 use crate::state::{AppState, Liveness, PeerState, Standing};
 use crate::swarm::peer::{peer_swarm, send_hello_once};
@@ -618,83 +617,3 @@ pub(crate) async fn run_sync_worker(state: AppState, mut rx: mpsc::UnboundedRece
         }
     }
 }
-
-// --- change publisher --------------------------------------------------------
-
-fn patch_store_path(patch: &automerge::Patch) -> Vec<String> {
-    let mut path: Vec<String> = patch
-        .path
-        .iter()
-        .map(|(_, prop)| match prop {
-            automerge::Prop::Map(key) => key.clone(),
-            automerge::Prop::Seq(index) => index.to_string(),
-        })
-        .collect();
-
-    match &patch.action {
-        automerge::PatchAction::PutMap { key, .. }
-        | automerge::PatchAction::DeleteMap { key, .. } => path.push(key.clone()),
-        // List, text and counter changes: the containing object changed.
-        _ => {}
-    }
-    path
-}
-
-pub(crate) async fn run_change_publisher(state: AppState) {
-    let mut changed = state.change_tx.subscribe();
-    let mut last_heads = state.write_doc(|doc| doc.get_heads()).await;
-
-    info!("Starting change publisher");
-
-    while changed.changed().await.is_ok() {
-        let before = last_heads.clone();
-
-        let (heads, paths, conflicts) = state
-            .write_doc(move |doc| {
-                let heads = doc.get_heads();
-                if heads == before {
-                    return (heads, Vec::new(), Vec::new());
-                }
-
-                // After an epoch switch the previous heads belong to the old document:
-                // report the root as changed, which every stream is related to.
-                if !before.iter().all(|h| doc.get_change_by_hash(h).is_some()) {
-                    return (heads, vec![Vec::new()], Vec::new());
-                }
-
-                let mut paths = Vec::new();
-                let mut conflicts = Vec::new();
-                for patch in doc.diff(&before, &heads) {
-                    let path = patch_store_path(&patch);
-                    if matches!(
-                        patch.action,
-                        automerge::PatchAction::PutMap { conflict: true, .. }
-                    ) {
-                        conflicts.push(path.clone());
-                    }
-                    paths.push(path);
-                }
-                (heads, paths, conflicts)
-            })
-            .await;
-
-        if heads == last_heads {
-            continue;
-        }
-        last_heads = heads;
-
-        for path in &conflicts {
-            warn!(path = ?path, "Concurrent writes produced a conflict");
-        }
-
-        if paths
-            .iter()
-            .any(|path| crate::swarm::topology::affects_neighbours(path))
-        {
-            state.topology_changed.notify_one();
-        }
-
-        // Fails only when nobody is subscribed.
-        let _ = state.change_events.send(Arc::new(ChangeSet { paths }));
-    }
-}
-- 
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