package socialnetworkservicelogic

import (
	"app-cloudep-tweeting-service/internal/domain"
	"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 RemoveFollowRelationLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

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

// RemoveFollowRelation 取消關注
func (l *RemoveFollowRelationLogic) RemoveFollowRelation(in *tweeting.DoFollowerRelationReq) (*tweeting.OKResp, error) {
	// 驗證資料
	if err := l.svcCtx.Validate.ValidateAll(&doFollowReq{
		FollowerUID: in.GetFollowerUid(),
		FolloweeUID: in.GetFolloweeUid(),
	}); err != nil {
		// 錯誤代碼 05-011-00
		return nil, ers.InvalidFormat(err.Error())
	}

	// 這裡要幫刪除關係， follower 追蹤 -> followee
	err := l.svcCtx.SocialNetworkRepository.RemoveFollowerRelation(l.ctx, in.GetFollowerUid(), in.GetFolloweeUid())
	if err != nil {
		// 錯誤代碼 05-021-35
		e := domain.CommentErrorL(
			domain.RemoveRelationErrorCode,
			logx.WithContext(l.ctx),
			[]logx.LogField{
				{Key: "req", Value: in},
				{Key: "func", Value: "SocialNetworkRepository.RemoveFollowerRelation"},
				{Key: "err", Value: err},
			},
			"failed to remove relation form -> to", in.GetFollowerUid(), in.GetFolloweeUid()).Wrap(err)

		return nil, e
	}

	return &tweeting.OKResp{}, nil
}