// SiYuan - Build Your Eternal Digital Garden
// Copyright (c) 2020-present, b3log.org
//
// 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 model

import (
	"path/filepath"
	"sync"

	"github.com/88250/gulu"
	"github.com/siyuan-note/filelock"
	"github.com/siyuan-note/logging"
	"github.com/siyuan-note/siyuan/kernel/conf"
	"github.com/siyuan-note/siyuan/kernel/util"
)

var snippetsLock = sync.Mutex{}

func SetSnippet(name, typ, content string, enabled bool) (err error) {
	snippetsLock.Lock()
	defer snippetsLock.Unlock()

	snippets, err := loadSnippets()
	if nil != err {
		return
	}
	snippet := &conf.Snippet{Name: name, Type: typ, Content: content, Enabled: enabled}
	snippets = append(snippets, snippet)
	err = writeSnippetsConf(snippets)
	return
}

func LoadSnippets() (ret []*conf.Snippet, err error) {
	snippetsLock.Lock()
	defer snippetsLock.Unlock()
	return loadSnippets()
}

func loadSnippets() (ret []*conf.Snippet, err error) {
	ret = []*conf.Snippet{}
	confPath := filepath.Join(util.DataDir, "snippets/conf.json")
	if !gulu.File.IsExist(confPath) {
		return
	}

	data, err := filelock.ReadFile(confPath)
	if nil != err {
		logging.LogErrorf("load js snippets failed: %s", err)
		return
	}

	if err = gulu.JSON.UnmarshalJSON(data, &ret); nil != err {
		logging.LogErrorf("unmarshal js snippets failed: %s", err)
		return
	}
	return
}

func writeSnippetsConf(snippets []*conf.Snippet) (err error) {
	data, err := gulu.JSON.MarshalIndentJSON(snippets, "", "  ")
	if nil != err {
		logging.LogErrorf("marshal snippets failed: %s", err)
		return
	}

	confPath := filepath.Join(util.DataDir, "snippets/conf.json")
	err = filelock.WriteFile(confPath, data)
	return
}