package service

import (
	"encoding/json"
	"gorm.io/gorm"
	gdb "wireguard-ui/global/client"
	"wireguard-ui/model"
	"wireguard-ui/template/render_data"
)

type setting struct{ *gorm.DB }

func Setting() setting {
	return setting{gdb.DB}
}

func (s setting) SetData(data *model.Setting) error {
	// 判断code是否已经存在
	var count int64
	if err := s.Model(&model.Setting{}).Where("code = ?", data.Code).Count(&count).Error; err != nil {
		return err
	}

	// 存在就更新，反之新增
	if count > 0 {
		return s.Save(&data).Error
	}

	return s.Create(&data).Error
}

// GetWGSetForConfig
// @description: 获取全局配置
// @receiver s
// @return data
// @return err
func (s setting) GetWGSetForConfig() (data *render_data.ServerSetting, err error) {
	var rs *model.Setting
	if err = s.Model(&model.Setting{}).Where("code = ?", "WG_SETTING").Take(&rs).Error; err != nil {
		return
	}

	if err = json.Unmarshal([]byte(rs.Data), &data); err != nil {
		return
	}

	return
}

// GetWGServerForConfig
// @description: 获取wireguard服务端配置为了渲染数据
// @receiver s
// @return render_data
// @return err
func (s setting) GetWGServerForConfig() (data *render_data.Server, err error) {
	var rs *model.Setting
	if err = s.Model(&model.Setting{}).Where("code = ?", "WG_SERVER").Take(&rs).Error; err != nil {
		return
	}

	if err = json.Unmarshal([]byte(rs.Data), &data); err != nil {
		return
	}

	// 获取一下全局的服务配置
	gs, err := s.GetWGSetForConfig()
	if err != nil {
		return
	}

	data.MTU = gs.MTU
	data.Table = gs.Table
	return
}