[recipes] Store the user id in gsettings

[Matthias Clasen <matthiasc src gnome org>]

commit d12b62941f2a913624b12291a2858c6f98fcf090
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Mar 7 16:20:53 2017 -0500

    Store the user id in gsettings
    
    No need to write a file for this tiny amount of data.

 data/org.gnome.recipes.gschema.xml |    6 ++++
 src/gr-recipe-store.c              |   52 +++++++++--------------------------
 2 files changed, 20 insertions(+), 38 deletions(-)
---
diff --git a/data/org.gnome.recipes.gschema.xml b/data/org.gnome.recipes.gschema.xml
index e941c90..bf6bc6a 100644
--- a/data/org.gnome.recipes.gschema.xml
+++ b/data/org.gnome.recipes.gschema.xml
@@ -2,6 +2,12 @@
 <schemalist>
 
   <schema path="/org/gnome/recipes/" id="org.gnome.recipes" gettext-domain="gnome-recipes">
+    <key type="s" name="user">
+      <default>''</default>
+      <summary>The user ID of the current user</summary>
+      <description>The user ID of the current user</description>
+    </key>
+
   </schema>
 
 </schemalist>
diff --git a/src/gr-recipe-store.c b/src/gr-recipe-store.c
index 0d955f1..91a63fe 100644
--- a/src/gr-recipe-store.c
+++ b/src/gr-recipe-store.c
@@ -46,7 +46,6 @@
  * - picks, with lists of things to put on the landing page
  * - favorites.db, with a list of the user's favorites
  * - shopping.db, with the current shppping list
- * - user, containing the user id of the user
  * - cooking, with a counter for how often cooking mode was launched
  *
  * Some of these files are preinstalled (picks.db), some are only per-user
@@ -63,6 +62,11 @@
  *
  * At runtime, we keep GrRecipe and GrChef objects in two separate hash tables.
  * Recipes have unique IDs of the form R_<dish_name>_by_<chef_id>.
+ *
+ * Ancillary data
+ * --------------
+ *
+ *  The user id of the user is kept in gsettings
  */
 
 struct _GrRecipeStore
@@ -905,51 +909,23 @@ save_chefs (GrRecipeStore *store)
 static void
 save_user (GrRecipeStore *self)
 {
-        g_autofree char *path = NULL;
-
-        path = g_build_filename (get_user_data_dir (), "user", NULL);
-
-        g_info ("Save user id: %s", path);
-
-        if (self->user == NULL || self->user[0] == '\0') {
-                g_unlink (path);
-        }
-        else {
-                g_autoptr(GError) error = NULL;
-
-                if (!g_file_set_contents (path, self->user, -1, &error)) {
-                        g_error ("Failed to save user id: %s", error->message);
-                }
-        }
+        g_autoptr(GSettings) settings = g_settings_new ("org.gnome.recipes");
+        g_settings_set_string (settings, "user", self->user ? self->user : "");
 }
 
-static gboolean
+static void
 load_user (GrRecipeStore *self,
            const char    *dir)
 {
-        g_autofree char *path = NULL;
-        g_autofree char *contents = NULL;
-        g_autoptr(GError) error = NULL;
+        g_autoptr(GSettings) settings = g_settings_new ("org.gnome.recipes");
+        g_autofree char *user = g_settings_get_string (settings, "user");
 
-        path = g_build_filename (dir, "user", NULL);
-        if (!g_file_get_contents (path, &contents, NULL, &error)) {
-                if (!g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_NOENT))
-                        g_error ("Failed to load user id: %s", error->message);
-                else {
-                        self->user = g_strdup (g_get_user_name ());
-                        save_user (self);
-                }
-                return FALSE;
+        if (user[0] == '\0') {
+                self->user = g_strdup (g_get_user_name ());
+                save_user (self);
         }
 
-        g_info ("Load user id: %s", path);
-
-        self->user = g_strdup (contents);
-
-        if (self->user[strlen (self->user) - 1] == '\n')
-                self->user[strlen (self->user) - 1] = '\0';
-
-        return TRUE;
+        self->user = g_strdup (user);
 }
 
 static void