From 82ef6f282f68a2581bae049cb5dfb39cef69717a Mon Sep 17 00:00:00 2001
From: evgeny <evgeny@adaptto.ru>
Date: Mon, 26 Oct 2026 22:46:08 +0100
Subject: [PATCH] Reset only dependent group history state when adopting
 editable format

---
 src/chat/db_sync.c | 30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/src/chat/db_sync.c b/src/chat/db_sync.c
index 26466a3d..10e1441d 100644
--- a/src/chat/db_sync.c
+++ b/src/chat/db_sync.c
@@ -319,16 +319,32 @@ static int si_table_init(struct DB_SYNC_INSTANCE* si) {
         snprintf(sql, sizeof(sql), "DELETE FROM \"feedback_%s\"", si->ns);
         if (sqlite3_exec(db, sql, NULL, NULL, NULL) != SQLITE_OK) goto rollback;
     }
-    if (sqlite3_prepare_v2(db, "DELETE FROM merkle_tree_hash WHERE namespace IN (?1,?2)", -1, &st, NULL) != SQLITE_OK)
-        goto rollback;
     char messages[25], feedback[25];
     snprintf(messages, sizeof(messages), "%u:%s", MT_DATA_MESSAGES, si->ns);
     snprintf(feedback, sizeof(feedback), "%u:%s", MT_DATA_FEEDBACK, si->ns);
-    rc = sqlite3_bind_text(st, 1, messages, -1, SQLITE_STATIC);
-    if (rc == SQLITE_OK) rc = sqlite3_bind_text(st, 2, feedback, -1, SQLITE_STATIC);
-    if (rc == SQLITE_OK) rc = sqlite3_step(st);
-    final_rc = sqlite3_finalize(st); st = NULL;
-    if (rc != SQLITE_DONE || final_rc != SQLITE_OK || sqlite3_exec(db, "COMMIT", NULL, NULL, NULL) != SQLITE_OK) goto rollback;
+    const char* dependencies[] = {"merkle_tree_hash", "attachment_keys", "attachment_key_requests", "attachment_key_outbox", "channels", "ui_state"};
+    const char* cleanup[] = {
+        "DELETE FROM merkle_tree_hash WHERE namespace IN (?1,?2)",
+        "DELETE FROM attachment_keys WHERE channel=?1", "DELETE FROM attachment_key_requests WHERE channel=?1",
+        "DELETE FROM attachment_key_outbox WHERE channel=?1",
+        "UPDATE channels SET last_msg_at=0,last_read_msg_id=0,last_pos_msg_id=0 WHERE channel_id=?1",
+        "DELETE FROM ui_state WHERE key IN ('ch_'||?1||'_last_read','ch_'||?1||'_last_pos')"
+    };
+    for (unsigned i = 0; i < sizeof(dependencies) / sizeof(dependencies[0]); i++) {
+        if (sqlite3_prepare_v2(db, "SELECT 1 FROM sqlite_master WHERE type='table' AND name=?", -1, &st, NULL) != SQLITE_OK) goto rollback;
+        rc = sqlite3_bind_text(st, 1, dependencies[i], -1, SQLITE_STATIC);
+        if (rc == SQLITE_OK) rc = sqlite3_step(st);
+        final_rc = sqlite3_finalize(st); st = NULL;
+        if ((rc != SQLITE_ROW && rc != SQLITE_DONE) || final_rc != SQLITE_OK) goto rollback;
+        if (rc == SQLITE_DONE) continue;
+        if (sqlite3_prepare_v2(db, cleanup[i], -1, &st, NULL) != SQLITE_OK) goto rollback;
+        rc = sqlite3_bind_text(st, 1, i ? si->ns : messages, -1, SQLITE_STATIC);
+        if (rc == SQLITE_OK && !i) rc = sqlite3_bind_text(st, 2, feedback, -1, SQLITE_STATIC);
+        if (rc == SQLITE_OK) rc = sqlite3_step(st);
+        final_rc = sqlite3_finalize(st); st = NULL;
+        if (rc != SQLITE_DONE || final_rc != SQLITE_OK) goto rollback;
+    }
+    if (sqlite3_exec(db, "COMMIT", NULL, NULL, NULL) != SQLITE_OK) goto rollback;
     DEBUG_INFO(DEBUG_CATEGORY_CHAT_SYNC, "history format v2: reset old group history and feedback tbl=%s group=%s",
         SI_TBL(si), si->ns);
     return 0;