From b5e7fec184889ccc2c5c83b495774f2581cf93b1 Mon Sep 17 00:00:00 2001
From: Luka Hietala <luka.hietala08@gmail.com>
Date: Sat, 22 Nov 2025 20:20:25 +0200
Subject: [PATCH] allow to view raw patch

---
 app.py                | 15 +++++++++++++++
 templates/commit.html |  4 ++--
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/app.py b/app.py
index c6504f0..6b0b144 100644
--- a/app.py
+++ b/app.py
@@ -1,4 +1,5 @@
 import os
+import subprocess
 from flask import Flask, render_template, request, abort
 from datetime import datetime
 from dotenv import load_dotenv
@@ -142,6 +143,20 @@ def commit_detail(repo_name, commit_id):
     commit = get_commit(f"{repo_path}/{repo_name}", commit_id)
     return render_template("commit.html", repo_name=repo_name, commit=commit)
 
+@app.route("/<repo_name>/patch/<commit_id>")
+def commit_patch(repo_name, commit_id):
+    if not validate_repo_name(repo_name):
+        abort(404)
+    if not validate_ref_as_commit(f"{repo_path}/{repo_name}", commit_id):
+        abort(400, "Invalid commit id")
+    # Use git format-patch to generate the patch
+    result = subprocess.run(['git', '--git-dir', f"{repo_path}/{repo_name}", 'format-patch', '-1', '--stdout', commit_id], 
+                            capture_output=True, text=True, encoding='utf-8')
+    # git leaves encoded headers like =?UTF-8?Q?...?=, but that should be fine for patch view for now, TODO 
+    if result.returncode != 0:
+        abort(500, f"Failed to generate patch: {result.stderr}")
+    return result.stdout, 200, {'Content-Type': 'text/plain; charset=utf-8'}
+
 @app.route("/<repo_name>/refs")
 def repo_refs(repo_name):
     if not validate_repo_name(repo_name):
diff --git a/templates/commit.html b/templates/commit.html
index 48627bf..2dd5001 100644
--- a/templates/commit.html
+++ b/templates/commit.html
@@ -31,7 +31,7 @@
         <tbody>
             {% for file in commit.changed_files %}
             <tr>
-                <td>{{ file.file }}</td>
+                <td><a href="{{ url_for('repo_blob_path', repo_name=repo_name, path=file.file) }}?ref={{ commit.id }}">{{ file.file }}</a></td>
                 <td style="color: green;">+{{ file.additions }}</td>
                 <td style="color: red;">-{{ file.deletions }}</td>
                 <td>{{ file.status }}</td>
@@ -40,7 +40,7 @@
         </tbody>
     </table>
     {% if commit.parent_id %}
-    <p><a href="{{ url_for('repo_diff', repo_name=repo_name) }}?id1={{ commit.parent_id }}&id2={{ commit.id }}">View Full Diff</a></p>
+    <p><a href="{{ url_for('repo_diff', repo_name=repo_name) }}?id1={{ commit.parent_id }}&id2={{ commit.id }}">View Full Diff</a> | <a href="{{ url_for('commit_patch', repo_name=repo_name, commit_id=commit.id) }}">Patch</a></p>
     {% endif %}
     {% else %}
     <p>No changes compared to parent</p>
-- 
2.47.3