feat: add batch operation for x/nft module

x/nft/keeper/nft_batch.go

@@ -0,0 +1,57 @@
+package keeper
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+	"github.com/cosmos/cosmos-sdk/x/nft"
+)
+
+// BatchMint defines a method for minting a batch of nfts
+func (k Keeper) BatchMint(ctx sdk.Context,
+	tokens []nft.NFT,
+	receiver sdk.AccAddress,
+) error {
+	for _, token := range tokens {
+		if err := k.Mint(ctx, token, receiver); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// BatchBurn defines a method for burning a batch of nfts from a specific classID.
+// Note: When the upper module uses this method, it needs to authenticate nft
+func (k Keeper) BatchBurn(ctx sdk.Context, classID string, nftIDs []string) error {
+	for _, nftID := range nftIDs {
+		if err := k.Burn(ctx, classID, nftID); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// BatchUpdate defines a method for updating a batch of exist nfts
+// Note: When the upper module uses this method, it needs to authenticate nft
+func (k Keeper) BatchUpdate(ctx sdk.Context, tokens []nft.NFT) error {
+	for _, token := range tokens {
+		if err := k.Update(ctx, token); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// BatchTransfer defines a method for sending a batch of nfts from one account to another account from a specific classID.
+// Note: When the upper module uses this method, it needs to authenticate nft
+func (k Keeper) BatchTransfer(ctx sdk.Context,
+	classID string,
+	nftIDs []string,
+	receiver sdk.AccAddress,
+) error {
+	for _, nftID := range nftIDs {
+		if err := k.Transfer(ctx, classID, nftID, receiver); err != nil {
+			return sdkerrors.Wrap(nft.ErrNFTNotExists, nftID)
+		}
+	}
+	return nil
+}