[gnome-software/1876-gnome-software-missing-an-install-upgrade-button-when-opening-an-rpm-file] packagekit: Mark local file as installed only if the version is lower than the installed

[Milan Crha <mcrha src gnome org>]

commit d4a9ffdad131e826a36679e96662b450cc302e46
Author: Milan Crha <mcrha redhat com>
Date:   Thu Aug 25 12:38:46 2022 +0200

    packagekit: Mark local file as installed only if the version is lower than the installed
    
    This allows to offer to install, aka update, the package from a file.
    When the file has lower version than the installed package then only
    a remove is offered.
    
    Closes https://gitlab.gnome.org/GNOME/gnome-software/-/issues/1876

 plugins/packagekit/gs-plugin-packagekit.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
---
diff --git a/plugins/packagekit/gs-plugin-packagekit.c b/plugins/packagekit/gs-plugin-packagekit.c
index 85f941648..ea9ac4d79 100644
--- a/plugins/packagekit/gs-plugin-packagekit.c
+++ b/plugins/packagekit/gs-plugin-packagekit.c
@@ -2654,11 +2654,18 @@ gs_plugin_packagekit_local_check_installed (GsPluginPackagekit  *self,
        }
        packages = pk_results_get_package_array (results);
        if (packages->len > 0) {
-               gs_app_set_state (app, GS_APP_STATE_UNKNOWN);
-               gs_app_set_state (app, GS_APP_STATE_INSTALLED);
+               gboolean is_higher_version = FALSE;
+               const gchar *app_version = gs_app_get_version (app);
                for (guint i = 0; i < packages->len; i++){
                        PkPackage *pkg = g_ptr_array_index (packages, i);
                        gs_app_add_source_id (app, pk_package_get_id (pkg));
+                       if (!is_higher_version &&
+                           as_vercmp_simple (pk_package_get_version (pkg), app_version) < 0)
+                               is_higher_version = TRUE;
+               }
+               if (!is_higher_version) {
+                       gs_app_set_state (app, GS_APP_STATE_UNKNOWN);
+                       gs_app_set_state (app, GS_APP_STATE_INSTALLED);
                }
        }
        return TRUE;