package socialnetworkservicelogic

import (
	"app-cloudep-tweeting-service/internal/domain"
	ers "code.30cm.net/digimon/library-go/errs"
	"context"

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

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

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

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

// GetFolloweeCount 取得我跟隨的數量
func (l *GetFolloweeCountLogic) GetFolloweeCount(in *tweeting.FollowCountReq) (*tweeting.FollowCountResp, error) {
	// 驗證資料
	if err := l.svcCtx.Validate.ValidateAll(&getFollowCountReq{
		UID: in.Uid,
	}); err != nil {
		// 錯誤代碼 05-011-00
		return nil, ers.InvalidFormat(err.Error())
	}

	followeeCount, err := l.svcCtx.SocialNetworkRepository.GetFolloweeCount(l.ctx, in.GetUid())
	if err != nil {
		// 錯誤代碼 05-021-34
		e := domain.CommentErrorL(
			domain.GetFolloweeCountErrorCode,
			logx.WithContext(l.ctx),
			[]logx.LogField{
				{Key: "req", Value: in},
				{Key: "func", Value: "SocialNetworkRepository.GetFolloweeCount"},
				{Key: "err", Value: err},
			},
			"failed to count follower").Wrap(err)

		return nil, e
	}

	return &tweeting.FollowCountResp{
		Uid:   in.GetUid(),
		Total: followeeCount,
	}, nil
}