From 10955be6968ff76bc25d1c455d9fac611fdd64f1 Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Tue, 1 Jul 2025 19:15:03 +0200
Subject: [PATCH] Handle base branch changed in `[autolabel]` and check-commits

---
 src/github.rs                 | 8 ++++++++
 src/handlers/autolabel.rs     | 2 ++
 src/handlers/check_commits.rs | 3 ++-
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/github.rs b/src/github.rs
index d3858bf8..4e69e66c 100644
--- a/src/github.rs
+++ b/src/github.rs
@@ -1116,6 +1116,7 @@ pub struct ChangeInner {
 pub struct Changes {
     pub title: Option<ChangeInner>,
     pub body: Option<ChangeInner>,
+    pub base: Option<ChangeInner>,
 }
 
 #[derive(PartialEq, Eq, Debug, serde::Deserialize)]
@@ -1228,6 +1229,13 @@ pub struct IssuesEvent {
     pub sender: User,
 }
 
+impl IssuesEvent {
+    pub fn has_base_changed(&self) -> bool {
+        matches!(self.action, IssuesAction::Edited)
+            && matches!(&self.changes, Some(changes) if changes.base.is_some())
+    }
+}
+
 #[derive(Debug, serde::Deserialize)]
 struct PullRequestEventFields {}
 
diff --git a/src/handlers/autolabel.rs b/src/handlers/autolabel.rs
index 83adf78c..3693760a 100644
--- a/src/handlers/autolabel.rs
+++ b/src/handlers/autolabel.rs
@@ -20,6 +20,7 @@ pub(super) async fn parse_input(
         Some(config) => config,
         None => return Ok(None),
     };
+
     // On opening a new PR or sync'ing the branch, look at the diff and try to
     // add any appropriate labels.
     //
@@ -39,6 +40,7 @@ pub(super) async fn parse_input(
                 | IssuesAction::ReadyForReview
                 | IssuesAction::ConvertedToDraft
         )
+        || event.has_base_changed()
     {
         let files = if can_trigger_files {
             event
diff --git a/src/handlers/check_commits.rs b/src/handlers/check_commits.rs
index f7f173dc..d4eeb754 100644
--- a/src/handlers/check_commits.rs
+++ b/src/handlers/check_commits.rs
@@ -50,7 +50,8 @@ pub(super) async fn handle(ctx: &Context, event: &Event, config: &Config) -> any
             | IssuesAction::Reopened
             | IssuesAction::Synchronize
             | IssuesAction::ReadyForReview
-    ) || !event.issue.is_pr()
+    ) || !event.has_base_changed()
+        || !event.issue.is_pr()
     {
         return Ok(());
     }