/
msg_server_burn_nft.go
73 lines (59 loc) · 2.38 KB
/
msg_server_burn_nft.go
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package keeper
import (
"context"
"encoding/json"
"github.com/ipgit2860/vcoa/x/vnft/types"
sdk "github.com/cosmos/cosmos-sdk/types"
)
func (k msgServer) BurnNFT(goCtx context.Context, msg *types.MsgBurnNFT) (*types.MsgBurnNFTResponse, error) {
ctx := sdk.UnwrapSDKContext(goCtx)
// Check nft exists
exists := k.nftKeeper.HasNFT(ctx, msg.ClassId, msg.NftId)
if !exists {
return nil, types.ErrNftNotFound.Wrapf("Class %s NFT %s does not exist", msg.ClassId, msg.NftId)
}
// Check user is owner
owner := k.nftKeeper.GetOwner(ctx, msg.ClassId, msg.NftId)
if err := k.assertBech32EqualsAccAddress(msg.Creator, owner); err != nil {
return nil, err
}
// Check class is set to burnable
class, hasClass := k.nftKeeper.GetClass(ctx, msg.ClassId)
if !hasClass {
return nil, types.ErrNftClassNotFound.Wrapf("Class id %s not found", msg.ClassId)
}
// Unmarshal class data
var classData types.ClassData
if err := classData.Unmarshal(class.Data.Value); err != nil {
return nil, types.ErrFailedToUnmarshalData.Wrapf(err.Error())
}
type format struct {
CField []string `protobuf:"bytes,1,opt,name=cField,proto3" json:"cField,omitempty"`
CType []string `protobuf:"bytes,2,opt,name=cType,proto3" json:"cType,omitempty"`
COptional []bool `protobuf:"bytes,3,opt,name=cOptional,proto3" json:"cOptional,omitempty"`
}
type metadata struct {
Version int `protobuf:"bytes,1,opt,name=version,proto3" json:"version,omitempty"`
Format types.JsonInput `protobuf:"bytes,2,opt,name=format,proto3" json:"format,omitempty"`
MultiAuthor bool `protobuf:"bytes,3,opt,name=multiAuthor,proto3" json:"multiAuthor,omitempty"`
Burnable bool `protobuf:"bytes,4,opt,name=burnable,proto3" json:"burnable,omitempty"`
Transferable bool `protobuf:"bytes,5,opt,name=transferable,proto3" json:"transferable,omitempty"`
}
var classMeta metadata
json.Unmarshal([]byte(classData.Metadata), &classMeta)
if !classMeta.Burnable {
return nil, types.ErrNftNotBurnable.Wrapf("NFT of class %s is not burnable", class.Id)
}
// Burn NFT
err := k.nftKeeper.Burn(ctx, msg.ClassId, msg.NftId)
if err != nil {
return nil, types.ErrFailedToBurnNFT.Wrapf("%s", err.Error())
}
// Emit event
ctx.EventManager().EmitTypedEvent(&types.EventBurnNFT{
ClassId: class.Id,
NftId: msg.NftId,
Owner: owner.String(),
})
return &types.MsgBurnNFTResponse{}, nil
}