From d76eccad1c7d8dcad06de6727a9711e559048939 Mon Sep 17 00:00:00 2001
From: Michael Shamoon <4887959+shamoon@users.noreply.github.com>
Date: Fri, 1 Apr 2022 01:48:05 -0700
Subject: [PATCH] remote_version API endpoint

---
 src/documents/views.py | 31 +++++++++++++++++++++++++++++++
 src/paperless/urls.py  |  6 ++++++
 2 files changed, 37 insertions(+)

diff --git a/src/documents/views.py b/src/documents/views.py
index 0564e5469..faca183c7 100644
--- a/src/documents/views.py
+++ b/src/documents/views.py
@@ -1,6 +1,8 @@
 import logging
 import os
+import re
 import tempfile
+import urllib
 import uuid
 import zipfile
 from datetime import datetime
@@ -24,6 +26,8 @@ from django.views.decorators.cache import cache_control
 from django.views.generic import TemplateView
 from django_filters.rest_framework import DjangoFilterBackend
 from django_q.tasks import async_task
+from packaging import version as packaging_version
+from paperless import version
 from paperless.db import GnuPG
 from paperless.views import StandardPagination
 from rest_framework import parsers
@@ -666,3 +670,30 @@ class BulkDownloadView(GenericAPIView):
             )
 
             return response
+
+
+class RemoteVersionView(GenericAPIView):
+    def get(self, request, format=None):
+        try:
+            with urllib.request.urlopen(
+                "https://raw.githubusercontent.com/paperless-ngx/paperless-ngx"
+                + "/main/src/paperless/version.py",
+            ) as response:
+                remote = response.read().decode("utf-8")
+            match = re.search("(\\d+, \\d+, \\d+)", remote)
+            if match:
+                remote_version = ".".join(match[0].split(", "))
+        except urllib.error.URLError:
+            remote_version = "0.0.0"
+
+        current_version = ".".join([str(_) for _ in version.__version__[:3]])
+        is_greater = packaging_version.parse(remote_version) > packaging_version.parse(
+            current_version,
+        )
+
+        return Response(
+            {
+                "version": remote_version,
+                "greater_than_current": is_greater,
+            },
+        )
diff --git a/src/paperless/urls.py b/src/paperless/urls.py
index 9dbe39e8a..833788cce 100644
--- a/src/paperless/urls.py
+++ b/src/paperless/urls.py
@@ -14,6 +14,7 @@ from documents.views import DocumentTypeViewSet
 from documents.views import IndexView
 from documents.views import LogViewSet
 from documents.views import PostDocumentView
+from documents.views import RemoteVersionView
 from documents.views import SavedViewViewSet
 from documents.views import SearchAutoCompleteView
 from documents.views import SelectionDataView
@@ -72,6 +73,11 @@ urlpatterns = [
                     BulkDownloadView.as_view(),
                     name="bulk_download",
                 ),
+                re_path(
+                    r"^remote_version/",
+                    RemoteVersionView.as_view(),
+                    name="remoteversion",
+                ),
                 path("token/", views.obtain_auth_token),
             ]
             + api_router.urls,