[shotwell] piwigo: Add .jpg extension to file name

[Jens Georg <jensgeorg src gnome org>]

commit f24bd7af01eff3e3085134ba7de5a5e898e3fbbf
Author: Jens Georg <mail jensge org>
Date:   Tue Mar 7 23:53:25 2017 +0100

    piwigo: Add .jpg extension to file name
    
    Otherwise downloading files would cause the original RAW file name
    created with JPEG contents
    
    Signed-off-by: Jens Georg <mail jensge org>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=729091

 plugins/shotwell-publishing/PiwigoPublishing.vala |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/plugins/shotwell-publishing/PiwigoPublishing.vala 
b/plugins/shotwell-publishing/PiwigoPublishing.vala
index 60219a6..15d118b 100644
--- a/plugins/shotwell-publishing/PiwigoPublishing.vala
+++ b/plugins/shotwell-publishing/PiwigoPublishing.vala
@@ -1773,9 +1773,12 @@ private class ImagesAddTransaction : Publishing.RESTSupport.UploadTransaction {
 
         GLib.HashTable<string, string> disposition_table =
             new GLib.HashTable<string, string>(GLib.str_hash, GLib.str_equal);
-        disposition_table.insert("filename",  Soup.URI.encode(
-            publishable.get_param_string(
-                Spit.Publishing.Publishable.PARAM_STRING_BASENAME), null));
+        var basename = publishable.get_param_string(Spit.Publishing.Publishable.PARAM_STRING_BASENAME);
+        if (!basename.down().has_suffix(".jpeg") &&
+            !basename.down().has_suffix(".jpg")) {
+            basename += ".jpg";
+        }
+        disposition_table.insert("filename",  Soup.URI.encode(basename, null));
         disposition_table.insert("name", "image");
 
         set_binary_disposition_table(disposition_table);