feat(auction): add bank interface

app/app.go

@@ -510,6 +510,7 @@ func New(
 	app.AuctionKeeperB = auctionkeeper.NewBuilder(
 		appCodec,
 		keys[auction.StoreKey],
+		app.BankKeeper,
 	)
 
 	// register the staking hooks

x/auction/expected_keepers.go

@@ -1,4 +1,13 @@
 package auction
 
-// TODO: create a shared interface for bank keeper in /sdkutils
-type BankKeeper interface{}
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+// BankKeeper defines the expected x/bank keeper interface.
+type BankKeeper interface {
+	SendCoinsFromModuleToAccount(ctx sdk.Context, fromModule string, toAddr sdk.AccAddress, coins sdk.Coins) error
+	SendCoinsFromAccountToModule(ctx sdk.Context, fromAddr sdk.AccAddress, toModule string, coins sdk.Coins) error
+	SendCoinsFromModuleToModule(ctx sdk.Context, fromModule string, toModule string, coins sdk.Coins) error
+	SpendableCoins(ctx sdk.Context, addr sdk.AccAddress) sdk.Coins
+}

x/auction/keeper/keeper.go

@@ -4,15 +4,18 @@ import (
 	"github.com/cosmos/cosmos-sdk/codec"
 	storetypes "github.com/cosmos/cosmos-sdk/store/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
+
+	"github.com/umee-network/umee/v6/x/auction"
 )
 
 type Builder struct {
 	cdc      codec.Codec
 	storeKey storetypes.StoreKey
+	bank     auction.BankKeeper
 }
 
-func NewBuilder(cdc codec.Codec, key storetypes.StoreKey) Builder {
-	return Builder{cdc: cdc, storeKey: key}
+func NewBuilder(cdc codec.Codec, key storetypes.StoreKey, b auction.BankKeeper) Builder {
+	return Builder{cdc: cdc, storeKey: key, bank: b}
 }
 
 func (kb Builder) Keeper(ctx *sdk.Context) Keeper {