From 79f50f27f7e4da3b5b4b86b42a83a5cc95546476 Mon Sep 17 00:00:00 2001
From: tecnovert <tecnovert@tecnovert.net>
Date: Sat, 30 May 2026 22:54:14 +0200
Subject: [PATCH] fix: ui, display offer chain a feerate for reversed swaps

---
 basicswap/db.py                |  5 +++--
 basicswap/templates/offer.html |  2 +-
 basicswap/ui/page_offers.py    | 22 ++++++++++++++--------
 doc/release-notes.md           |  5 +++++
 4 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/basicswap/db.py b/basicswap/db.py
index d310f44..3498156 100644
--- a/basicswap/db.py
+++ b/basicswap/db.py
@@ -399,8 +399,9 @@ class XmrOffer(Table):
     swap_id = Column("integer", primary_key=True, autoincrement=True)
     offer_id = Column("blob")
 
-    a_fee_rate = Column("integer")  # Chain a fee rate
-    b_fee_rate = Column("integer")  # Chain b fee rate
+    # TODO: rename to from/to - values are not switched for reverse swaps
+    a_fee_rate = Column("integer")  # Chain from fee rate
+    b_fee_rate = Column("integer")  # Chain to fee rate
 
     # Delay before the chain a lock refund tx can be mined
     lock_time_1 = Column("integer")
diff --git a/basicswap/templates/offer.html b/basicswap/templates/offer.html
index 93cc370..c250945 100644
--- a/basicswap/templates/offer.html
+++ b/basicswap/templates/offer.html
@@ -224,7 +224,7 @@
            </tr>
            <tr class="opacity-100 text-gray-500 dark:text-gray-100 hover:bg-coolGray-200 dark:hover:bg-gray-600">
             <td class="py-3 px-6 bold">Chain A local fee rate</td>
-            <td class="py-3 px-6">{{ data.a_fee_rate_verify }} (Fee source: {{ data.a_fee_rate_verify_src }}{% if data.a_fee_warn == true %} WARNING {% endif %})</td>
+            <td class="py-3 px-6">{{ data.a_fee_rate_verify }} (Fee source: {{ data.a_fee_rate_verify_src }}{% if data.a_fee_warn == "high" %} WARNING - HIGH {% elif data.a_fee_warn == "low" %} WARNING - LOW {% elif data.a_fee_warn is defined %} WARNING {% endif %})</td>
            </tr>
            {% endif %}
           </table>
diff --git a/basicswap/ui/page_offers.py b/basicswap/ui/page_offers.py
index 8daa8c6..48f33d9 100644
--- a/basicswap/ui/page_offers.py
+++ b/basicswap/ui/page_offers.py
@@ -768,24 +768,30 @@ def page_offer(self, url_split, post_string):
     ci_leader = ci_to if reverse_bid else ci_from
 
     if xmr_offer:
-        int_fee_rate_now, fee_source = ci_leader.get_fee_rate()
+        a_fee_rate_now, fee_source = ci_leader.get_fee_rate()
+        a_fee_rate_now = ci_leader.make_int(a_fee_rate_now)
 
-        data["xmr_type"] = True
-        data["a_fee_rate"] = ci_leader.format_amount(xmr_offer.a_fee_rate)
-        data["a_fee_rate_verify"] = ci_leader.format_amount(
-            int_fee_rate_now, conv_int=True
+        chain_a_fee_rate: int = (
+            xmr_offer.b_fee_rate if reverse_bid else xmr_offer.a_fee_rate
         )
+        data["xmr_type"] = True
+        data["a_fee_rate"] = ci_leader.format_amount(chain_a_fee_rate)
+        data["a_fee_rate_verify"] = ci_leader.format_amount(a_fee_rate_now)
         data["a_fee_rate_verify_src"] = fee_source
-        data["a_fee_warn"] = xmr_offer.a_fee_rate < int_fee_rate_now
 
-        from_fee_rate = xmr_offer.b_fee_rate if reverse_bid else xmr_offer.a_fee_rate
+        warning_threshold: float = 1.2
+        if chain_a_fee_rate * warning_threshold < a_fee_rate_now:
+            data["a_fee_warn"] = "low"
+        elif chain_a_fee_rate > a_fee_rate_now * warning_threshold:
+            data["a_fee_warn"] = "high"
+
         lock_spend_tx_vsize = (
             ci_from.xmr_swap_b_lock_spend_tx_vsize()
             if reverse_bid
             else ci_from.xmr_swap_a_lock_spend_tx_vsize()
         )
         lock_spend_tx_fee = ci_from.make_int(
-            from_fee_rate * lock_spend_tx_vsize / 1000, r=1
+            chain_a_fee_rate * lock_spend_tx_vsize / 1000, r=1
         )
         data["amt_from_lock_spend_tx_fee"] = ci_from.format_amount(
             lock_spend_tx_fee // ci_from.COIN()
diff --git a/doc/release-notes.md b/doc/release-notes.md
index 3fc3035..dfd8417 100644
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -13,6 +13,11 @@
 - New setting "startup_delay"
   - Adjusts the time waited for coin daemons to start between "startup_tries".
   - Valid as a base setting and can be overridden per coin with chainclients settings.
+- UI:
+  - offer page:
+    - Fixed feerate from other chain displayed for reversed swaps
+    - Added warning text for fee above 1.2 x local estimate.
+
 
 
 0.14.5