package controller

import (
	"SciencesServer/app/api/website/model"
	model2 "SciencesServer/app/common/model"
)

type About struct{}

type AboutHandle func() *About

type (
	// AboutInfo 基本信息
	AboutInfo struct {
		ID      string `json:"id"`
		Title   string `json:"title"`
		Content string `json:"content"`
	}
	// AboutNavigationInfo 导航栏信息
	AboutNavigationInfo struct {
		ID    string `json:"id"`
		Title string `json:"title"`
	}
)

// Instance 关于信息
func (c *About) Instance(parentID uint64) (*AboutInfo, error) {
	mSysAbout := model.NewSysAbout()

	if isExist, err := model2.FirstField(mSysAbout.SysAbout, []string{"id", "title", "content"},
		model2.NewWhere("parent_id", parentID)); err != nil {
		return nil, err
	} else if !isExist {
		return nil, nil
	}
	return &AboutInfo{ID: mSysAbout.GetEncodeID(), Title: mSysAbout.Title, Content: mSysAbout.Content}, nil
}

// Navigation 导航栏
func (c *About) Navigation() ([]*AboutNavigationInfo, error) {
	mSysAbout := model.NewSysAbout()
	out := make([]*model2.SysAbout, 0)

	if err := model2.ScanFields(mSysAbout.SysAbout, &out, []string{"id", "title"}, &model2.ModelWhereOrder{
		Where: model2.NewWhere("parent_id", 0),
		Order: model2.NewOrder("sort", model2.OrderModeToDesc),
	}, &model2.ModelWhereOrder{
		Order: model2.NewOrder("id", model2.OrderModeToDesc),
	}); err != nil {
		return nil, err
	}
	list := make([]*AboutNavigationInfo, 0)

	for _, v := range out {
		list = append(list, &AboutNavigationInfo{
			ID: v.GetEncodeID(), Title: v.Title,
		})
	}
	return list, nil
}

func NewAbout() AboutHandle {
	return func() *About {
		return &About{}
	}
}