From 25b189462950e6268a1e782949ade3edf1dceb61 Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Thu, 17 Jul 2025 20:40:09 +0200
Subject: [PATCH 1/3] Add exclude list for rendered-link handler

---
 src/config.rs                 | 5 ++++-
 src/handlers/rendered_link.rs | 4 ++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/config.rs b/src/config.rs
index c44deefd3..ea96c92d6 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -497,6 +497,8 @@ pub(crate) struct BotPullRequests {}
 #[serde(deny_unknown_fields)]
 pub(crate) struct RenderedLinkConfig {
     pub(crate) trigger_files: Vec<String>,
+    #[serde(default)]
+    pub(crate) exclude_files: Vec<String>,
 }
 
 #[derive(PartialEq, Eq, Debug, serde::Deserialize)]
@@ -720,7 +722,8 @@ mod tests {
                 merge_conflicts: None,
                 bot_pull_requests: None,
                 rendered_link: Some(RenderedLinkConfig {
-                    trigger_files: vec!["posts/".to_string()]
+                    trigger_files: vec!["posts/".to_string()],
+                    exclude_files: vec![],
                 }),
                 issue_links: Some(IssueLinksConfig {
                     check_commits: true,
diff --git a/src/handlers/rendered_link.rs b/src/handlers/rendered_link.rs
index 31b4dcc6d..096d10f91 100644
--- a/src/handlers/rendered_link.rs
+++ b/src/handlers/rendered_link.rs
@@ -47,6 +47,10 @@ async fn add_rendered_link(
                     .trigger_files
                     .iter()
                     .any(|tf| f.filename.starts_with(tf))
+                    && !config
+                        .exclude_files
+                        .iter()
+                        .any(|tf| f.filename.starts_with(tf))
             })
             .and_then(|file| {
                 let head = e.issue.head.as_ref()?;

From 1496c0c2bd100c45db2f534d04b01473a2ef3f6d Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Thu, 17 Jul 2025 21:03:58 +0200
Subject: [PATCH 2/3] Sort by total number of lines changed to improve rendered
 link guess

---
 src/github.rs                 |  3 +++
 src/handlers/rendered_link.rs | 10 +++++++---
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/github.rs b/src/github.rs
index 2c4ede7cb..c72cbfe5e 100644
--- a/src/github.rs
+++ b/src/github.rs
@@ -1100,6 +1100,9 @@ pub struct PullRequestFile {
     pub sha: String,
     pub filename: String,
     pub blob_url: String,
+    pub additions: u64,
+    pub deletions: u64,
+    pub changes: u64,
 }
 
 #[derive(Debug, serde::Deserialize)]
diff --git a/src/handlers/rendered_link.rs b/src/handlers/rendered_link.rs
index 096d10f91..646c9bde1 100644
--- a/src/handlers/rendered_link.rs
+++ b/src/handlers/rendered_link.rs
@@ -42,7 +42,7 @@ async fn add_rendered_link(
 
         let rendered_link = files
             .iter()
-            .find(|f| {
+            .filter(|f| {
                 config
                     .trigger_files
                     .iter()
@@ -52,7 +52,10 @@ async fn add_rendered_link(
                         .iter()
                         .any(|tf| f.filename.starts_with(tf))
             })
-            .and_then(|file| {
+            // Sort the relavant files by the total number of lines changed, as to
+            // improve our guess for the relevant file to show the link to.
+            .max_by_key(|f| f.additions + f.deletions + f.changes)
+            .map(|file| {
                 let head = e.issue.head.as_ref()?;
                 let base = e.issue.base.as_ref()?;
 
@@ -88,7 +91,8 @@ async fn add_rendered_link(
                     },
                     file.filename
                 ))
-            });
+            })
+            .flatten();
 
         let new_body: Cow<'_, str> = if !e.issue.body.contains("[Rendered]") {
             if let Some(rendered_link) = rendered_link {

From 905cdf67b634787e379eed4283a3673f99006f2b Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Fri, 18 Jul 2025 23:27:50 +0200
Subject: [PATCH 3/3] Add documentation to `RenderedLinkConfig` fields

---
 src/config.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/config.rs b/src/config.rs
index ea96c92d6..81d2a2a46 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -496,7 +496,9 @@ pub(crate) struct BotPullRequests {}
 #[serde(rename_all = "kebab-case")]
 #[serde(deny_unknown_fields)]
 pub(crate) struct RenderedLinkConfig {
+    /// List of paths to watch for modifications
     pub(crate) trigger_files: Vec<String>,
+    /// List of paths to exclude from watching for modifications
     #[serde(default)]
     pub(crate) exclude_files: Vec<String>,
 }