x/auction/keeper/keeper.go

@@ -204,12 +204,38 @@ func (k Keeper) GetAuctionById(ctx sdk.Context, id string) (auctiontypes.Auction
 func (k Keeper) GetAuctionsByOwner(ctx sdk.Context, owner string) ([]auctiontypes.Auction, error) {
 	iter, err := k.Auctions.Indexes.Owner.MatchExact(ctx, owner)
 	if err != nil {
-		return []auctiontypes.Auction{}, err
+		return nil, err
 	}
 
 	return indexes.CollectValues(ctx, k.Auctions, iter)
 }
 
+// QueryAuctionsByBidder - query auctions by bidder
+func (k Keeper) QueryAuctionsByBidder(ctx sdk.Context, bidderAddress string) ([]auctiontypes.Auction, error) {
+	auctions := []auctiontypes.Auction{}
+
+	iter, err := k.Bids.Indexes.Bidder.MatchExact(ctx, bidderAddress)
+	if err != nil {
+		return nil, err
+	}
+
+	for ; iter.Valid(); iter.Next() {
+		keyPair, err := iter.PrimaryKey()
+		if err != nil {
+			return nil, err
+		}
+
+		auction, err := k.GetAuctionById(ctx, keyPair.K1())
+		if err != nil {
+			return nil, err
+		}
+
+		auctions = append(auctions, auction)
+	}
+
+	return auctions, nil
+}
+
 // CreateAuction creates a new auction.
 func (k Keeper) CreateAuction(ctx sdk.Context, msg auctiontypes.MsgCreateAuction) (*auctiontypes.Auction, error) {
 	// TODO: Setup checks

x/auction/keeper/query_server.go

@@ -101,7 +101,18 @@ func (qs queryServer) GetBids(c context.Context, req *auctiontypes.QueryBidsRequ
 
 // AuctionsByBidder queries auctions by bidder
 func (qs queryServer) AuctionsByBidder(c context.Context, req *auctiontypes.QueryAuctionsByBidderRequest) (*auctiontypes.QueryAuctionsByBidderResponse, error) {
-	panic("unimplemented")
+	ctx := sdk.UnwrapSDKContext(c)
+
+	if req.BidderAddress == "" {
+		return nil, errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "bidder address is required")
+	}
+
+	auctions, err := qs.k.QueryAuctionsByBidder(ctx, req.BidderAddress)
+	if err != nil {
+		return nil, err
+	}
+
+	return &auctiontypes.QueryAuctionsByBidderResponse{Auctions: &auctiontypes.Auctions{Auctions: auctions}}, nil
 }
 
 // AuctionsByOwner queries auctions by owner

x/auction/module/autocli.go

@@ -60,6 +60,14 @@ func (am AppModule) AutoCLIOptions() *autocliv1.ModuleOptions {
 						{ProtoField: "auction_id"},
 					},
 				},
+				{
+					RpcMethod: "AuctionsByBidder",
+					Use:       "by-bidder [bidder]",
+					Short:     "Get auctions list by bidder",
+					PositionalArgs: []*autocliv1.PositionalArgDescriptor{
+						{ProtoField: "bidder_address"},
+					},
+				},
 			},
 		},
 		Tx: &autocliv1.ServiceCommandDescriptor{