libvideosite: Add capability to initialize, load and save a config with builtin methods

diff --git a/libvideosite.pm b/libvideosite.pm
index 959e61c..01fa7d9 100644 (file)
--- a/libvideosite.pm
+++ b/libvideosite.pm
@@ -17,6 +17,8 @@ use LWP::UserAgent;
 use Data::Dumper;
 use File::Basename;
 use Cwd qw(realpath);
+use JSON -support_by_pp;
+use File::Temp qw(tempfile);
 use strict;
 
 @ISA = qw(Exporter);
@@ -30,6 +32,8 @@ my @grabbers;
 my @getters;
 my $getter;
 my %builtin_config = ();
+my $builtin_config_path;
+my $builtin_config_default;
 our $error;
 
 #
@@ -921,6 +925,29 @@ sub _grabbers {
 # ==============================================
 #
 sub _builtin_config_init {
+
+    if (defined($builtin_config_path)) {
+        my $filename = File::Spec->catfile($builtin_config_path, 'videosite.json');
+
+        _debug("Trying to load configuration from %s", $filename);
+
+        if (-r $filename) {
+            eval {
+                local $/;
+                open(CONF, '<', $filename);
+                %builtin_config = %{JSON->new->utf8->decode(<CONF>)};
+                close(CONF);
+            } or do {
+                _io("Error loading configuration: %s", $@);
+            }
+        };
+    } elsif (defined($builtin_config_default)) {
+        _debug("Initializing builtin config from external default");
+        foreach (keys(%{$builtin_config_default})) {
+            _debug("Setting %s=%s", $_, $builtin_config_default->{$_});
+            $builtin_config{$_} = $builtin_config_default->{$_};
+        }
+    }
 }
 
 sub _builtin_config_get {
@@ -936,6 +963,23 @@ sub _builtin_config_has {
 }
 
 sub _builtin_config_save {
+
+    if (defined($builtin_config_path)) {
+        my $filename = File::Spec->catfile($builtin_config_path, 'videosite.json');
+
+        _debug("Attempting to save config to %s", $filename);
+
+        eval {
+            my ($tempfile, $tempfn) = tempfile("videosite.json.XXXXXX", dir => $builtin_config_path);
+            print $tempfile JSON->new->pretty->utf8->encode(\%builtin_config);
+            close($tempfile);
+            rename($tempfn, $filename);
+        } or do {
+            return 0;
+        }
+    }
+
+    return 1;
 }
 
 sub _builtin_config_del {
@@ -1034,6 +1078,14 @@ sub register_api {
         $debug = $a->{_debug}->();
     }
 
+    if (exists($a->{_config_path})) {
+        $builtin_config_path = $a->{_config_path}->();
+    }
+
+    if (exists($a->{_config_default})) {
+        $builtin_config_default = $a->{_config_default}->();
+    }
+
     @outputstack = ({ewpf => $remote_api->{'io'}, window => ""});
 
     return 1;