From e31f1df2ac21b80f0d40c0bcff27f2292d58050f Mon Sep 17 00:00:00 2001
From: Hideaki Terai <hideack@pepabo.com>
Date: Sun, 24 May 2026 09:29:13 +0900
Subject: [PATCH] =?UTF-8?q?=E3=83=90=E3=83=83=E3=82=AF=E3=83=95=E3=82=A3?=
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Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 lib/core.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/core.js b/lib/core.js
index 1ff8bb4..9978f7e 100644
--- a/lib/core.js
+++ b/lib/core.js
@@ -568,6 +568,7 @@ core.start = async (commander) => {
       let processedChannels = 0;
       let earliestTs = null;
       let latestTs = null;
+      const fetchedPerChannel = {};
       const CONCURRENCY = 5;
 
       const processMessage = (message, channelId) => {
@@ -632,6 +633,7 @@ core.start = async (commander) => {
         });
 
         totalFetched++;
+        fetchedPerChannel[channelId] = (fetchedPerChannel[channelId] || 0) + 1;
 
         const ts = parseFloat(message.ts);
         if (earliestTs === null || ts < earliestTs) earliestTs = ts;
@@ -676,6 +678,11 @@ core.start = async (commander) => {
         clearInterval(progressInterval);
         if (totalFetched > 0) {
           process.stdout.write(`Backfill complete: ${totalFetched} message(s) fetched.\n`);
+          Object.entries(fetchedPerChannel)
+            .sort((a, b) => b[1] - a[1])
+            .forEach(([chId, count]) => {
+              process.stdout.write(`  ${resolveChannelLabelKey(chId)}: ${count} message(s)\n`);
+            });
         } else {
           process.stdout.write("Backfill complete: no new messages.\n");
         }