gluon-autoupdater: replace config script generator with Lua script

package/gluon-autoupdater/Makefile

 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gluon-autoupdater
-PKG_VERSION:=0.1
-PKG_RELEASE:=1.$(GLUON_CONFIG_VERSION)$(if $(GLUON_BRANCH),.$(GLUON_BRANCH))
+PKG_VERSION:=2
+PKG_RELEASE:=$(GLUON_BRANCH)
 
 PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
 
@@ -28,9 +28,10 @@ endef
 define Package/gluon-autoupdater/install
 	$(CP) ./files/* $(1)/
 
-	$(INSTALL_DIR) $(1)/lib/gluon/upgrade/autoupdater/invariant
-	GLUON_BRANCH='$(GLUON_BRANCH)' $(GLUON_CONFIGURE) invariant.pl > $(1)/lib/gluon/upgrade/autoupdater/invariant/010-autoupdater
-	chmod +x $(1)/lib/gluon/upgrade/autoupdater/invariant/010-autoupdater
+	if [ '$(GLUON_BRANCH)' ]; then \
+		$(INSTALL_DIR) $(1)/lib/gluon/autoupdater; \
+		echo '$(GLUON_BRANCH)' > $(1)/lib/gluon/autoupdater/default_branch; \
+	fi
 endef
 
 $(eval $(call BuildPackage,gluon-autoupdater))

package/gluon-autoupdater/files/lib/gluon/upgrade/autoupdater/invariant/010-autoupdater

+#!/usr/bin/lua
+
+local site = require 'gluon.site_config'
+local uci = require 'luci.model.uci'
+
+local c = uci.cursor()
+
+
+for name, config in pairs(site.autoupdater.branches) do
+	c:delete('autoupdater', name)
+	c:section('autoupdater', 'branch', name,
+		  {
+			  name = config.name,
+			  mirror = config.mirrors,
+			  probability = config.probability,
+			  good_signatures = config.good_signatures,
+			  pubkey = config.pubkeys,
+		  }
+	)
+end
+
+if not c:get('autoupdater', 'settings') then
+	local enabled = 0
+	local branch = site.autoupdater.branch
+
+	local f = io.open('/lib/gluon/autoupdater/default_branch')
+	if f then
+		enabled = 1
+		branch = f:read('*line')
+		f:close()
+	end
+
+	c:section('autoupdater', 'autoupdater', 'settings',
+		  {
+			  enabled = enabled,
+			  branch = branch,
+		  }
+	)
+end
+
+c:save('autoupdater')
+c:commit('autoupdater')

package/gluon-autoupdater/invariant.pl

-my $cfg = $CONFIG->{autoupdater};
-
-my $branch = $ENV{GLUON_BRANCH} || $cfg->{branch};
-my $enabled = $ENV{GLUON_BRANCH} ? 1 : 0;
-
-print <<END;
-#/bin/sh
-
-uci -q get autoupdater.settings || {
-uci -q batch <<EOF
-set autoupdater.settings=autoupdater
-set autoupdater.settings.branch=$branch
-set autoupdater.settings.enabled=$enabled
-EOF
-}
-
-uci -q batch <<EOF
-END
-
-foreach my $name (sort keys $cfg->{branches}) {
-  my $branch = $cfg->{branches}->{$name};
-
-  print <<END;
-
-delete autoupdater.$name
-set autoupdater.$name=branch
-END
-
-  for (qw(name probability good_signatures)) {
-    print "set autoupdater.$name.$_=$branch->{$_}\n";
-  }
-
-  for (@{$branch->{mirrors}}) {
-    print "add_list autoupdater.$name.mirror=$_\n";
-  }
-
-  for (@{$branch->{pubkeys}}) {
-    print "add_list autoupdater.$name.pubkey=$_\n";
-  }
-}
-
-print <<END;
-
-commit autoupdater
-EOF
-END