use stale cache on failed refresh

1 files changed, 10 insertions, 7 deletions

diff --git a/main.lua b/main.lua
index d8d78b1..c01226d 100644
--- a/main.lua
+++ b/main.lua
@@ -118,18 +118,21 @@ local function cached_xc_call(method)
 	local path = mp_utils.join_path(
 		script_dir,
 		'cache/' .. xc.server:gsub('%W', '_') .. '.' .. method)
-
 	local f = mp_utils.file_info(path)
-	if f and os.time() - f.mtime < 24*60*60 then
-		return util.read_json_file(path)
+	local data
+
+	if not f or os.time() - f.mtime > 24*60*60 then
+		data = xc[method](xc)
+		if data then
+			util.write_json_file(path, data)
+		end
 	end
 
-	local data = xc[method](xc)
-	if not data then
-		return
+	if f and not data then
+		print('using cached ' .. method)
+		data = util.read_json_file(path)
 	end
 
-	util.write_json_file(path, data)
 	return data
 end