package logic

import (
	"context"
	"encoding/json"
	"fusenapi/model/gmodel"
	"fusenapi/utils/auth"
	"fusenapi/utils/basic"
	"gorm.io/gorm"
	"io/ioutil"
	"net/http"
	"strconv"
	"time"

	"fusenapi/server/map-library/internal/svc"
	"fusenapi/server/map-library/internal/types"

	"github.com/zeromicro/go-zero/core/logx"
)

type SaveMapLibraryLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewSaveMapLibraryLogic(ctx context.Context, svcCtx *svc.ServiceContext) *SaveMapLibraryLogic {
	return &SaveMapLibraryLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *SaveMapLibraryLogic) SaveMapLibrary(userinfo *auth.UserInfo, req *http.Request) (resp *basic.Response) {
	if userinfo.GetIdType() != auth.IDTYPE_User {
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "please login first")
	}
	bodyData, err := ioutil.ReadAll(req.Body)
	defer req.Body.Close()
	var postData []types.SaveMapLibraryData
	if err = json.Unmarshal(bodyData, &postData); err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeSaveErr, "param err")
	}
	//获取所有贴图数据[获取id]
	mapLibraryModel := gmodel.NewFsMapLibraryModel(l.svcCtx.MysqlConn)
	maplibraryList, err := mapLibraryModel.GetAllEnabledList(l.ctx, "`id`")
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "failed to get map library list")
	}

	sort := int64(0)
	status := int64(1)
	now := time.Now().Unix()
	needDeleteMid := make([]int64, 0, len(postData))
	mapPostMid := make(map[int64]struct{})
	//开启事务
	err = l.svcCtx.MysqlConn.Transaction(func(tx *gorm.DB) error {
		for _, v := range postData {
			infoByte, _ := json.Marshal(v.Info)
			infoJsonStr := string(infoByte)
			switch v.Mid {
			case "": //新增
				err = mapLibraryModel.Create(l.ctx, &gmodel.FsMapLibrary{
					Title:  &v.Info.Title,
					Info:   &infoJsonStr,
					Sort:   &sort,
					Status: &status,
					Ctime:  &now,
					TagId:  &v.Tag.Id,
				})
				if err != nil {
					return err
				}
			default: //修改
				midInt, err := strconv.ParseInt(v.Mid, 10, 64)
				if err != nil {
					return err
				}
				mapPostMid[midInt] = struct{}{}
				err = mapLibraryModel.Update(l.ctx, midInt, &gmodel.FsMapLibrary{
					Title:  &v.Info.Title,
					Info:   &infoJsonStr,
					TagId:  &v.Tag.Id,
					Status: &status,
				})
				if err != nil {
					return err
				}
			}
		}
		//删除需要删除的
		for _, v := range maplibraryList {
			//旧的不在新的里面则删除
			if _, ok := mapPostMid[v.Id]; !ok {
				needDeleteMid = append(needDeleteMid, v.Id)
			}
		}
		return mapLibraryModel.ChangeStatusByIds(l.ctx, needDeleteMid, 0)
	})
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeSaveErr, "failed to save map library info")
	}
	return resp.SetStatusWithMessage(basic.CodeOK, "success")
}