// 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"
	"time"

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

func checkNeighborCommentAddParam(req *pb_v1.NeighborCommentAddRequest) error {

	switch {
	case req.GardenId == 0:
		return status.Error(10003, "小区不能为空")
	case req.Pid == 0 && req.ArticleId == 0:
		return status.Error(10003, "父id和文章id不能同时为空")
	case req.Pid > 0 && req.ArticleId > 0:
		return status.Error(10003, "父id和文章id智能选其一")
	case req.Content == "":
		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 articleCommentAdd(req *pb_v1.NeighborCommentAddRequest, db *gorm.DB, dbname string) (err error) {
	article := dbmodel.NewNeighborArticle(dbname)
	where := map[string]interface{}{
		"id": req.ArticleId,
	}
	err = article.Find(db, where)
	if err != nil && err != gorm.ErrRecordNotFound {
		return errors.DataBaseError
	}
	if article.ID == 0 {
		return errors.ErrRecordNotFound
	}
	now := time.Now()
	p := dbmodel.TNeighborComment{
		ArticleId:       req.ArticleId,
		ClassId:         article.ClassId,
		Pid:             0,
		Content:         req.Content,
		Pics:            utils.StringJoin(req.Pics, ","),
		Uid:             req.Uid,
		SubCommentCount: 0,
		CreatedAt:       now,
		UpdatedAt:       now,
		Likes:           0,
		UserIcon:        req.UserIcon,
		NickName:        req.NickName,
	}
	p.SetTable(dbname)
	err = p.Insert(db)
	if err != nil {
		return errors.DataBaseError
	}
	values := map[string]interface{}{
		"comment_count": gorm.Expr("comment_count + ?", 1),
	}
	err = article.Update(db, where, values)
	if err != nil {
		return errors.DataBaseError
	}
	return nil
}

func subCommentAdd(req *pb_v1.NeighborCommentAddRequest, db *gorm.DB, dbname string) (err error) {
	comment := dbmodel.NewNeighborComment(dbname)
	where := map[string]interface{}{
		"id": req.Pid,
	}
	err = comment.Find(db, where)
	if err != nil && err != gorm.ErrRecordNotFound {
		return errors.DataBaseError
	}
	if comment.ID == 0 {
		return errors.ErrRecordNotFound
	}
	now := time.Now()
	p := dbmodel.TNeighborComment{
		ArticleId:       comment.ArticleId,
		ClassId:         comment.ClassId,
		Pid:             req.Pid,
		Content:         req.Content,
		Pics:            utils.StringJoin(req.Pics, ";"),
		Uid:             req.Uid,
		SubCommentCount: 0,
		CreatedAt:       now,
		UpdatedAt:       now,
		Likes:           0,
		UserIcon:        req.UserIcon,
	}
	p.SetTable(dbname)
	err = p.Insert(db)
	if err != nil {
		return errors.DataBaseError
	}
	values := map[string]interface{}{
		"sub_comment_count": gorm.Expr("sub_comment_count + ?", 1),
	}
	err = comment.Update(db, where, values)
	if err != nil {
		return errors.DataBaseError
	}
	return nil
}

func NeighborCommentAdd(ctx context.Context, req *pb_v1.NeighborCommentAddRequest) (reply *pb_v1.NeighborCommentAddReply, err error) {

	reply = &pb_v1.NeighborCommentAddReply{}

	// 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 = checkNeighborCommentAddParam(req)
	if err != nil {
		return nil, err
	}

	dbname := utils.GetGardenDbName(req.GardenId)
	db := database.DB().Begin()

	if req.Pid > 0 {
		err = subCommentAdd(req, db, dbname)
	} else {
		err = articleCommentAdd(req, db, dbname)
	}
	if err != nil {
		db.Rollback()
		return nil, err
	}

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

	db.Commit()

	return reply, nil
}