app-cloudep-tweeting-service/internal/logic/postservice/inc_dec_like_dislike_count_logic.go

package postservicelogic

import (
	"app-cloudep-tweeting-service/internal/domain"
	model "app-cloudep-tweeting-service/internal/model/mongo"
	"context"

	ers "code.30cm.net/digimon/library-go/errs"

	"app-cloudep-tweeting-service/gen_result/pb/tweeting"
	"app-cloudep-tweeting-service/internal/svc"

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

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

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

type postReactionAction struct {
	PostID       string          `json:"post_id" validate:"required"`                 // 貼文的 ID
	ReactionType domain.LikeType `json:"reaction_type" validate:"required,oneof=1 2"` // 用戶的反應類型，可能是讚或不讚
	IsIncrement  bool            `json:"is_increment" validate:"required"`            // 表示是否增加（true 表示增加，false 表示減少）
}

// IncDecLikeDislikeCount 增減數量
func (l *IncDecLikeDislikeCountLogic) IncDecLikeDislikeCount(in *tweeting.IncDecLikeDislikeCountReq) (*tweeting.OKResp, error) {
	// 驗證資料
	if err := l.svcCtx.Validate.ValidateAll(&postReactionAction{
		PostID:       in.GetPostID(),
		ReactionType: domain.LikeType(in.GetReactionType()),
		IsIncrement:  in.GetIsIncrement(),
	}); err != nil {
		return nil, ers.InvalidFormat(err.Error())
	}

	err := l.svcCtx.PostModel.IncDecLikeDislikeCountLogic(l.ctx, &model.PostReactionAction{
		PostID:       in.GetPostID(),
		ReactionType: domain.LikeType(in.GetReactionType()),
		IsIncrement:  in.GetIsIncrement(),
	})
	if err != nil {
		e := domain.PostMongoErrorL(
			logx.WithContext(l.ctx),
			[]logx.LogField{
				{Key: "req", Value: in},
				{Key: "func", Value: "PostModel.IncDecLikeDislikeCountLogic"},
				{Key: "err", Value: err},
			},
			"failed to inc like or dislike").Wrap(err)
		return nil, e
	}

	return &tweeting.OKResp{}, nil
}