Add rename exports function to API

docs/docs/integrations/api.md

@@ -302,6 +302,14 @@ It is also possible to export this recording as a timelapse.
 }
 ```
 
+### `DELETE /api/export/<export_name>`
+
+Delete an export from disk.
+
+### `PATCH /api/export/<export_name_current>/<export_name_new>`
+
+Renames an export.
+
 ### `GET /api/<camera_name>/recordings/summary`
 
 Hourly summary of recordings data for a camera.

frigate/http.py

@@ -7,6 +7,7 @@ import os
 import subprocess as sp
 import time
 import traceback
+import re
 from datetime import datetime, timedelta, timezone
 from functools import reduce
 from pathlib import Path
@@ -1954,9 +1955,62 @@ def export_recording(camera_name: str, start_time, end_time):
     )
 
 
+def export_filename_check_extension(filename: str):
+    filename_split = os.path.splitext(filename)
+    if filename_split[1] == ".mp4":
+        return filename
+    else:
+        return filename + ".mp4"
+
+
+def export_filename_is_valid(filename: str):
+    if re.search(r'[^.:_A-Za-z0-9]', filename) or filename.startswith('in_progress.'):
+        return False
+    else:
+        return True
+
+
+@bp.route("/export/<file_name_current>/<file_name_new>", methods=["PATCH"])
+def export_rename(file_name_current, file_name_new: str):
+    safe_file_name_current = secure_filename(export_filename_check_extension(file_name_current))
+    file_current = os.path.join(EXPORT_DIR, safe_file_name_current)
+
+    if not os.path.exists(file_current):
+        return make_response(
+            jsonify({"success": False, "message": f"{file_name_current} not found."}),
+            404,
+        )
+
+    if not export_filename_is_valid(file_name_new):
+        return make_response(
+            jsonify({"success": False, "message": f"{file_name_new} contains illegal characters."}),
+            400,
+        )
+    
+    safe_file_name_new = secure_filename(export_filename_check_extension(file_name_new))
+    file_new = os.path.join(EXPORT_DIR, safe_file_name_new)
+
+    if os.path.exists(file_new):
+        return make_response(
+            jsonify({"success": False, "message": f"{file_name_new} already exists."}),
+            400,
+        )
+
+    os.rename(file_current, file_new)
+    return make_response(
+        jsonify(
+            {
+                "success": True,
+                "message": "Successfully renamed file.",
+            }
+        ),
+        200,
+    )
+
+
 @bp.route("/export/<file_name>", methods=["DELETE"])
 def export_delete(file_name: str):
-    safe_file_name = secure_filename(file_name)
+    safe_file_name = secure_filename(export_filename_check_extension(file_name))
     file = os.path.join(EXPORT_DIR, safe_file_name)
 
     if not os.path.exists(file):