SSE 调整

internal/chat/streamer.go

@@ -66,14 +66,14 @@ type subscription struct {
 	st *streamer
 }
 
-// Next blocks until at least one event with ID >= lastEventID is available,
+// Next blocks until at least one event with ID >= nextEventID is available,
 // the stream closes, or ctx is cancelled.
-// It returns all events from lastEventID to the current tail.
-func (sub *subscription) Next(ctx context.Context, lastEventID int64) ([]SSEEvent, bool, error) {
+// It returns all events from nextEventID to the current tail.
+func (sub *subscription) Next(ctx context.Context, nextEventID int64) ([]SSEEvent, bool, error) {
 	sub.st.mu.Lock()
 	defer sub.st.mu.Unlock()
 
-	for int64(len(sub.st.events)) <= lastEventID && !sub.st.closed {
+	for int64(len(sub.st.events)) <= nextEventID && !sub.st.closed {
 		done := make(chan struct{})
 		go func() {
 			select {
@@ -88,7 +88,7 @@ func (sub *subscription) Next(ctx context.Context, lastEventID int64) ([]SSEEven
 			return nil, false, ctx.Err()
 		}
 	}
-	out := append([]SSEEvent(nil), sub.st.events[lastEventID:]...)
+	out := append([]SSEEvent(nil), sub.st.events[nextEventID:]...)
 	return out, sub.st.closed, nil
 }