[evolution-data-server] Bug 773419 - Age limit for offline message download ][

[Milan Crha <mcrha src gnome org>]

commit 2da11c1e1d4536a062c0495bd3fe78ce750dd390
Author: Milan Crha <mcrha redhat com>
Date:   Wed Dec 14 15:17:00 2016 +0100

    Bug 773419 - Age limit for offline message download ][

 src/camel/providers/imapx/camel-imapx-folder.c |   22 ++++++++++++++++++----
 1 files changed, 18 insertions(+), 4 deletions(-)
---
diff --git a/src/camel/providers/imapx/camel-imapx-folder.c b/src/camel/providers/imapx/camel-imapx-folder.c
index 4db01fc..4b395d6 100644
--- a/src/camel/providers/imapx/camel-imapx-folder.c
+++ b/src/camel/providers/imapx/camel-imapx-folder.c
@@ -1059,6 +1059,9 @@ camel_imapx_folder_new (CamelStore *store,
        gboolean filter_inbox;
        gboolean filter_junk;
        gboolean filter_junk_inbox;
+       gboolean offline_limit_by_age = FALSE;
+       CamelTimeUnit offline_limit_unit;
+       gint offline_limit_value;
        guint32 add_folder_flags = 0;
 
        d ("opening imap folder '%s'\n", folder_dir);
@@ -1073,6 +1076,9 @@ camel_imapx_folder_new (CamelStore *store,
                "filter-inbox", &filter_inbox,
                "filter-junk", &filter_junk,
                "filter-junk-inbox", &filter_junk_inbox,
+               "limit-by-age", &offline_limit_by_age,
+               "limit-unit", &offline_limit_unit,
+               "limit-value", &offline_limit_value,
                NULL);
 
        g_object_unref (settings);
@@ -1117,10 +1123,18 @@ camel_imapx_folder_new (CamelStore *store,
        camel_object_state_read (CAMEL_OBJECT (folder));
 
        if (camel_offline_folder_can_downsync (CAMEL_OFFLINE_FOLDER (folder))) {
-               /* Ensure cache will never expire, otherwise
-                * it causes redownload of messages. */
-               camel_data_cache_set_expire_age (imapx_folder->cache, -1);
-               camel_data_cache_set_expire_access (imapx_folder->cache, -1);
+               time_t when = (time_t) 0;
+
+               if (offline_limit_by_age)
+                       when = camel_time_value_apply (when, offline_limit_unit, offline_limit_value);
+
+               if (when <= (time_t) 0)
+                       when = (time_t) -1;
+
+               /* Ensure cache will expire when set up, otherwise
+                * it causes redownload of messages too soon. */
+               camel_data_cache_set_expire_age (imapx_folder->cache, when);
+               camel_data_cache_set_expire_access (imapx_folder->cache, when);
        } else {
                /* Set cache expiration for one week. */
                camel_data_cache_set_expire_age (imapx_folder->cache, 60 * 60 * 24 * 7);