// Copyright 2019 getensh.com. All rights reserved.
// Use of this source code is governed by getensh.com.

package neighbor

import (
	"context"
	"encoding/json"
	"fmt"
	"gorm.io/gorm"
	"property-garden/errors"
	"property-garden/impl/v1/oss_utils"
	dbmodel "property-garden/model"
	pb_v1 "property-garden/pb/v1"
	"property-garden/utils"
	"strings"
	"time"

	"git.getensh.com/common/gopkgs/database"
	"git.getensh.com/common/gopkgs/logger"
	"go.uber.org/zap"
	"google.golang.org/grpc/status"
)

func checkNeighborArticleAddParam(req *pb_v1.NeighborArticleAddRequest) error {

	switch {
	case req.GardenId == 0:
		return status.Error(10003, "小区不能为空")
	case req.ClassId == 0:
		return status.Error(10003, "分类id不能为空")
	case len(req.Title) > 128:
		return status.Error(10003, "标题过长")
	case req.Content == "" && len(req.Pics) == 0:
		return status.Error(10003, "内容不能为空")
	case req.Uid == 0:
		return status.Error(10003, "uid 不能为空")

	}
	return nil
}

func NeighborArticleAdd(ctx context.Context, req *pb_v1.NeighborArticleAddRequest) (reply *pb_v1.NeighborArticleAddReply, err error) {

	reply = &pb_v1.NeighborArticleAddReply{}

	// 捕获各个task中的异常并返回给调用者
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("%+v", r)
			e := &status.Status{}
			if er := json.Unmarshal([]byte(err.Error()), e); er != nil {
				logger.Error("err",
					zap.String("system_err", err.Error()),
					zap.Stack("stacktrace"))
			}
		}
	}()
	// 参数检查
	err = checkNeighborArticleAddParam(req)
	if err != nil {
		return nil, err
	}
	now := time.Now()
	dbname := utils.GetGardenDbName(req.GardenId)

	class := dbmodel.NewNeighborClass(dbname)
	where := map[string]interface{}{
		"id": req.ClassId,
	}
	err = class.Find(database.DB(), where)
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, errors.DataBaseError
	}
	if class.ID == 0 {
		return nil, status.Error(10003, "分类不存在")
	}

	db := database.DB().Begin()

	p := dbmodel.TNeighborArticle{
		Title:     req.Title,
		ClassId:   req.ClassId,
		Content:   req.Content,
		Pics:      utils.StringJoin(req.Pics, ";"),
		UpdatedAt: now,
		CreatedAt: now,
		UserIcon:  req.UserIcon,
		Uid:       req.Uid,
		NickName:  req.NickName,
	}
	p.SetTable(dbname)
	err = p.Insert(db)
	if err != nil {
		db.Rollback()
		if strings.Contains(strings.ToLower(err.Error()), "duplicate") {
			return nil, status.Error(10003, "分类名已存在")
		}
		return nil, errors.DataBaseError
	}
	values := map[string]interface{}{
		"article_count": gorm.Expr("article_count + ?", 1),
	}
	if err = class.Update(db, where, values); err != nil {
		db.Rollback()
		return nil, errors.DataBaseError
	}

	if err := oss_utils.OssObjAdd(req.Pics, nil); err != nil {
		db.Rollback()
		return nil, err
	}

	db.Commit()

	return reply, nil
}