From 52b7379a20fb2ca60152046dbfe678adf03e8e81 Mon Sep 17 00:00:00 2001
From: Jordan Doyle <jordan@doyle.la>
Date: Sat, 09 Jul 2022 01:52:19 +0100
Subject: [PATCH] Allow looking up a tree by id

---
 src/git.rs                 | 10 +++++++++-
 statics/style.css          |  4 ++++
 src/methods/repo.rs        |  8 ++++++++
 templates/repo/commit.html |  2 +-
 4 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/src/git.rs b/src/git.rs
index 1ec4f27..597174f 100644
--- a/src/git.rs
+++ a/src/git.rs
@@ -97,12 +97,16 @@
 }
 
 impl OpenRepository {
-    pub async fn path(self: Arc<Self>, path: Option<PathBuf>) -> PathDestination {
+    pub async fn path(self: Arc<Self>, path: Option<PathBuf>, tree_id: Option<String>) -> PathDestination {
         tokio::task::spawn_blocking(move || {
             let repo = self.repo.lock();
 
-            let head = repo.head().unwrap();
-            let mut tree = head.peel_to_tree().unwrap();
+            let mut tree = if let Some(tree_id) = tree_id {
+                repo.find_tree(Oid::from_str(&tree_id).unwrap()).unwrap()
+            } else {
+                let head = repo.head().unwrap();
+                head.peel_to_tree().unwrap()
+            };
 
             if let Some(path) = path.as_ref() {
                 let item = tree.get_path(&path).unwrap();
diff --git a/statics/style.css b/statics/style.css
index 1018024..77321c2 100644
--- a/statics/style.css
+++ a/statics/style.css
@@ -25,6 +25,10 @@
     color: blue;
 }
 
+a.no-style {
+    color: inherit;
+}
+
 a:hover {
     text-decoration: underline;
 }
diff --git a/src/methods/repo.rs b/src/methods/repo.rs
index ecf9df9..ef3bd08 100644
--- a/src/methods/repo.rs
+++ a/src/methods/repo.rs
@@ -245,11 +245,17 @@
     into_response(&CommitView { repo, commit })
 }
 
+#[derive(Deserialize)]
+pub struct TreeQuery {
+    id: Option<String>,
+}
+
 pub async fn handle_tree(
     Extension(repo): Extension<Repository>,
     Extension(RepositoryPath(repository_path)): Extension<RepositoryPath>,
     Extension(ChildPath(child_path)): Extension<ChildPath>,
     Extension(git): Extension<Arc<Git>>,
+    Query(query): Query<TreeQuery>,
 ) -> Response {
     #[derive(Template)]
     #[template(path = "repo/tree.html")]
@@ -267,7 +273,7 @@
 
     let open_repo = git.repo(repository_path).await;
 
-    match open_repo.path(child_path).await {
+    match open_repo.path(child_path, query.id).await {
         PathDestination::Tree(items) => into_response(&TreeView { repo, items }),
         PathDestination::File(file) => into_response(&FileView { repo, file }),
     }
diff --git a/templates/repo/commit.html b/templates/repo/commit.html
index 647a32e..be35019 100644
--- a/templates/repo/commit.html
+++ a/templates/repo/commit.html
@@ -25,7 +25,7 @@
     </tr>
     <tr>
         <th>tree</th>
-        <td colspan="2"><pre>{{ commit.tree() }}</pre></td>
+        <td colspan="2"><pre><a href="/{{ repo.display() }}/tree?id={{ commit.tree() }}" class="no-style">{{ commit.tree() }}</a></pre></td>
     </tr>
     {% for parent in commit.parents() %}
     <tr>
--
rgit 0.1.3