TgLib::Cache does its own logging

1 files changed, 17 insertions, 9 deletions

diff --git a/lib/TgLib/Cache.pm b/lib/TgLib/Cache.pm
index b6bb9e6..dbbf252 100644
--- a/lib/TgLib/Cache.pm
+++ b/lib/TgLib/Cache.pm
@@ -3,6 +3,7 @@ package TgLib::Cache;
 use Storable qw<store retrieve>;
 use File::Basename qw<dirname>;
 use File::Path qw<make_path>;
+use Data::Dumper;
 
 use TgLib::Env qw<$CACHE_HOME>;
 
@@ -12,24 +13,31 @@ our @EXPORT = qw<new>;
 my $CACHE_FILE = "$CACHE_HOME/tgutils/cache";
 
 sub new {
-    my $class = shift;
+    my ($class, $logger) = @_;
+    my $cache = -f $CACHE_FILE
+        ? retrieve($CACHE_FILE)
+        : { version => 1 };
+    $logger->debug("Using cache: " . Dumper($cache));
 
     # Fetch cache
-    return bless((-f $CACHE_FILE
-                  ? retrieve($CACHE_FILE)
-                  : {'version' => $main::VERSION}), $class);
+    return bless { cache => $cache, logger => $logger }, $class;
 }
 
 sub offset {
-    my $cache = shift;
-    $cache->{'offset'} = shift if @_;
-    return $cache->{'offset'};
+    my $self = shift;
+    if (@_) {
+        $self->{'cache'}{'offset'} = shift;
+        $self->save;
+    }
+    return $self->{'cache'}{'offset'};
 }
 
+# Not needed to be called explicitly; every cache modification calls this
 sub save {
-    my $cache = shift;
+    my $self = shift;
     make_path dirname $CACHE_FILE;
-    store($cache, $CACHE_FILE);
+    store($self->{'cache'}, $CACHE_FILE);
+    $self->{'logger'}->debug(sprintf "Saved cache: %s\n", Dumper($self->{'cache'}));
 }
 
 1;