Add snapshot-clean.png API endpoint

docs/docs/integrations/api.md

@@ -290,6 +290,14 @@ Returns a thumbnail for the event id optimized for notifications. Works while th
 
 Returns the clip for the event id. Works after the event has ended.
 
+### `GET /api/events/<id>/snapshot-clean.png`
+
+Returns the clean snapshot image for the event id. Only works after an event has completed and if `snapshots` and `clean_copy` are enabled in the config.
+
+| param      | Type | Description        |
+| ---------- | ---- | ------------------ |
+| `download` | bool | Download the image |
+
 ### `GET /api/events/<id>/snapshot.jpg`
 
 Returns the snapshot image for the event id. Works while the event is in progress and after completion.
@@ -303,6 +311,7 @@ Accepts the following query string parameters, but they are only applied when an
 | `timestamp` | int  | Print the timestamp in the upper left (0 or 1)    |
 | `crop`      | int  | Crop the snapshot to the (0 or 1)                 |
 | `quality`   | int  | Jpeg encoding quality (0-100). Defaults to 70.    |
+| `download`  | bool | Download the image                                |
 
 ### `POST /api/events/<camera_name>/<label>/create`
 

frigate/api/media.py

@@ -935,6 +935,54 @@ def grid_snapshot(camera_name):
         )
 
 
+@MediaBp.route("/events/<id>/snapshot-clean.png")
+def event_snapshot_clean(id):
+    download = request.args.get("download", type=bool)
+    try:
+        event = Event.get(Event.id == id)
+        if event.end_time is None:
+            return make_response(
+                jsonify({"success": False, "message": "Event not complete"}), 404
+            )
+        if not event.has_snapshot:
+            return make_response(
+                jsonify({"success": False, "message": "Snapshot not available"}), 404
+            )
+    except DoesNotExist:
+        return make_response(
+            jsonify({"success": False, "message": "Event not found"}), 404
+        )
+    try:
+        clean_snapshot_path = os.path.join(
+            CLIPS_DIR, f"{event.camera}-{event.id}-clean.png"
+        )
+        if not os.path.exists(clean_snapshot_path):
+            return make_response(
+                jsonify({"success": False, "message": "Clean snapshot not available"}),
+                404,
+            )
+        with open(
+            os.path.join(CLIPS_DIR, f"{event.camera}-{event.id}-clean.png"), "rb"
+        ) as image_file:
+            png_bytes = image_file.read()
+    except Exception:
+        logger.error(f"Unable to load clean png for event: {event.id}")
+        return make_response(
+            jsonify(
+                {"success": False, "message": "Unable to load clean png for event"}
+            ),
+            400,
+        )
+    response = make_response(png_bytes)
+    response.headers["Content-Type"] = "image/png"
+    response.headers["Cache-Control"] = "private, max-age=31536000"
+    if download:
+        response.headers[
+            "Content-Disposition"
+        ] = f"attachment; filename=snapshot-{id}-clean.png"
+    return response
+
+
 @MediaBp.route("/events/<id>/snapshot.jpg")
 def event_snapshot(id):
     download = request.args.get("download", type=bool)