[gnome-software: 6/7] odrs: Use gs_utils_get_wilson_rating()

[Richard Hughes <rhughes src gnome org>]

commit 0c38e13f0b633de7d01214445c734bfdc4e4c094
Author: Richard Hughes <richard hughsie com>
Date:   Wed Jul 27 12:22:10 2016 +0100

    odrs: Use gs_utils_get_wilson_rating()

 src/plugins/gs-plugin-odrs.c |   24 +++++++++---------------
 1 files changed, 9 insertions(+), 15 deletions(-)
---
diff --git a/src/plugins/gs-plugin-odrs.c b/src/plugins/gs-plugin-odrs.c
index 83141b8..b100c6a 100644
--- a/src/plugins/gs-plugin-odrs.c
+++ b/src/plugins/gs-plugin-odrs.c
@@ -453,10 +453,7 @@ gs_plugin_refine_ratings (GsPlugin *plugin,
 {
        GsPluginData *priv = gs_plugin_get_data (plugin);
        GArray *review_ratings;
-       const guint to_percentage[] = { 0, 20, 40, 60, 80, 100 };
-       guint32 cnt = 0;
-       guint32 acc = 0;
-       guint i;
+       gint rating;
 
        /* get ratings */
        review_ratings = g_hash_table_lookup (priv->ratings,
@@ -465,17 +462,14 @@ gs_plugin_refine_ratings (GsPlugin *plugin,
                return TRUE;
        gs_app_set_review_ratings (app, review_ratings);
 
-       /* find the correct global rating */
-       for (i = 1; i <= 5; i++) {
-               guint32 tmp = g_array_index (review_ratings, guint32, i);
-               acc += to_percentage[i] * tmp;
-               cnt += tmp;
-       }
-       if (cnt == 0)
-               gs_app_set_rating (app, (gint) cnt);
-       else
-               gs_app_set_rating (app, (gint) (acc / cnt));
-
+       /* find the wilson rating */
+       rating = gs_utils_get_wilson_rating (g_array_index (review_ratings, guint32, 1),
+                                            g_array_index (review_ratings, guint32, 2),
+                                            g_array_index (review_ratings, guint32, 3),
+                                            g_array_index (review_ratings, guint32, 4),
+                                            g_array_index (review_ratings, guint32, 5));
+       if (rating > 0)
+               gs_app_set_rating (app, rating);
        return TRUE;
 }