/*
   Nging is a toolbox for webmasters
   Copyright (C) 2018-present  Wenhui Shen <swh@admpub.com>

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU Affero General Public License as published
   by the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Affero General Public License for more details.

   You should have received a copy of the GNU Affero General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

package perm

import (
	"github.com/admpub/events"
	"github.com/admpub/events/emitter"
	"github.com/admpub/nging/application/registry/navigate"
)

var navTreeCached *Map

func NavTreeCached() *Map {
	if navTreeCached != nil {
		return navTreeCached
	}
	navTreeCached = NewMap()
	for _, project := range navigate.ProjectListAll() {
		if project == nil {
			continue
		}
		navTreeCached.Import(project.NavList)
	}
	navTreeCached.Import(navigate.TopNavigate)
	return navTreeCached
}

func init() {
	emitter.DefaultCondEmitter.On(`beforeRun`, events.Callback(func(_ events.Event) error {
		NavTreeCached()
		return nil
	}))
}