feat: add batch operation for x/nft module

x/nft/keeper/nft_batch.go

@@ -0,0 +1,107 @@
+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 {
+	classIDs := make(map[string]bool, len(tokens))
+	for _, token := range tokens {
+		if !classIDs[token.ClassId] && !k.HasClass(ctx, token.ClassId) {
+			return sdkerrors.Wrap(nft.ErrClassNotExists, token.ClassId)
+		}
+
+		if k.HasNFT(ctx, token.ClassId, token.Id) {
+			return sdkerrors.Wrap(nft.ErrNFTExists, token.Id)
+		}
+
+		k.setNFT(ctx, token)
+		k.setOwner(ctx, token.ClassId, token.Id, receiver)
+		k.incrTotalSupply(ctx, token.ClassId)
+
+		ctx.EventManager().EmitTypedEvent(&nft.EventMint{
+			ClassId: token.ClassId,
+			Id:      token.Id,
+			Owner:   receiver.String(),
+		})
+		classIDs[token.ClassId] = true
+	}
+	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 {
+	if !k.HasClass(ctx, classID) {
+		return sdkerrors.Wrap(nft.ErrClassNotExists, classID)
+	}
+
+	for _, nftID := range nftIDs {
+		if !k.HasNFT(ctx, classID, nftID) {
+			return sdkerrors.Wrap(nft.ErrNFTNotExists, nftID)
+		}
+
+		owner := k.GetOwner(ctx, classID, nftID)
+		nftStore := k.getNFTStore(ctx, classID)
+		nftStore.Delete([]byte(nftID))
+
+		k.deleteOwner(ctx, classID, nftID, owner)
+		ctx.EventManager().EmitTypedEvent(&nft.EventBurn{
+			ClassId: classID,
+			Id:      nftID,
+			Owner:   owner.String(),
+		})
+	}
+	k.updateTotalSupply(
+		ctx,
+		classID,
+		k.GetTotalSupply(ctx, classID)-uint64(len(nftIDs)),
+	)
+	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 {
+	classIDs := make(map[string]bool, len(tokens))
+	for _, token := range tokens {
+		if !classIDs[token.ClassId] && !k.HasClass(ctx, token.ClassId) {
+			return sdkerrors.Wrap(nft.ErrClassNotExists, token.ClassId)
+		}
+
+		if !k.HasNFT(ctx, token.ClassId, token.Id) {
+			return sdkerrors.Wrap(nft.ErrNFTNotExists, token.Id)
+		}
+		k.setNFT(ctx, token)
+	}
+	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 {
+	if !k.HasClass(ctx, classID) {
+		return sdkerrors.Wrap(nft.ErrClassNotExists, classID)
+	}
+
+	for _, nftID := range nftIDs {
+		if !k.HasNFT(ctx, classID, nftID) {
+			return sdkerrors.Wrap(nft.ErrNFTNotExists, nftID)
+		}
+
+		owner := k.GetOwner(ctx, classID, nftID)
+		k.deleteOwner(ctx, classID, nftID, owner)
+		k.setOwner(ctx, classID, nftID, receiver)
+	}
+	return nil
+}