airgap

type ArgBuilder interface {
	CreateAccount(signer common.Address) (*TxArgs, error)
	AuthorizeVoteSigner(account common.Address, popSignature []byte) (*TxArgs, error)
	LockGold(signer common.Address, amount *big.Int) (*TxArgs, error)
	UnlockGold(signer common.Address, value *big.Int) (*TxArgs, error)
	RelockGold(signer common.Address, index *big.Int, value *big.Int) (*TxArgs, error)
	WithdrawGold(signer common.Address, index *big.Int) (*TxArgs, error)
	Vote(signer common.Address, group common.Address, value *big.Int) (*TxArgs, error)
	ActivateVotes(signer common.Address, account common.Address, group common.Address) (*TxArgs, error)
	RevokePendingVotes(signer common.Address, account common.Address, group common.Address, value *big.Int) (*TxArgs, error)
	RevokeActiveVotes(signer common.Address, account common.Address, group common.Address, value *big.Int) (*TxArgs, error)
	TransferGold(from common.Address, to common.Address, value *big.Int) (*TxArgs, error)
}

type CeloMethod struct {
	// Name of the abi method
	Name string
	// Registry id of contract where the method is defined
	Contract wrapper.RegistryKey
	// contains filtered or unexported fields
}

type Client interface {
	// Keygen generates a private key
	Keygen() (*ecdsa.PrivateKey, error)
	// Derive the cryptographic public key and on-chain address from the private key
	Derive(privateKey *ecdsa.PrivateKey) (*ecdsa.PublicKey, *common.Address, error)
	// Sign an arbitrary message with the private key
	Sign(message []byte, privateKey *ecdsa.PrivateKey) ([]byte, error)
	// Verify the signature of an arbitrary message
	Verify(message []byte, publicKey *ecdsa.PublicKey, signature []byte) bool

	// ConstructTxFromMetadata creates a new transaction using given Metadata
	ConstructTxFromMetadata(txMetadata *TxMetadata) (*Transaction, error)
	// SignTx signs an unsignedTx using the private seed and return a signedTx that can be submitted to the node
	SignTx(transaction *Transaction, privateKey *ecdsa.PrivateKey) (*Transaction, error)

	// GenerateProofOfPossessionSignature generates a PoP needed for Authorize calls
	GenerateProofOfPossessionSignature(privateKey *ecdsa.PrivateKey, address *common.Address) ([]byte, error)
}

type Server interface {
	ObtainMetadata(ctx context.Context, txOpts *TxArgs) (*TxMetadata, error)
	SubmitTx(ctx context.Context, rawTx []byte) (*common.Hash, error)
}

type Transaction struct {
	*TxMetadata `json:"metadata"`

	// Signature values
	V *big.Int `json:"v"`
	R *big.Int `json:"r"`
	S *big.Int `json:"s"`
}

type TxArgs struct {
	From  common.Address
	Value *big.Int
	// non-nil means exclusively cGLD transfer
	To *common.Address
	// non-nil means celo registry contract invokation
	Method *CeloMethod
	Args   []interface{}
}

type TxMetadata struct {
	From                common.Address
	Nonce               uint64
	GasPrice            *big.Int
	GatewayFeeRecipient *common.Address
	GatewayFee          *big.Int
	FeeCurrency         *common.Address
	To                  common.Address
	Data                []byte
	Value               *big.Int
	Gas                 uint64
	ChainId             *big.Int
}