45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
package bsc
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import (
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"context"
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"git.lehouerou.net/laurent/evm"
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"git.lehouerou.net/laurent/evm/bsc/contracts"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/pkg/errors"
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"github.com/shopspring/decimal"
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)
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type WBNB struct {
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evm.Token
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client evm.Client
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contract *contracts.WBnb
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}
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func NewWBNB(client evm.Client) (*WBNB, error) {
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address, err := client.TokenService().TokenAddressBySymbol("WBNB")
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if err != nil {
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return nil, errors.Wrap(err, "getting wbnb address")
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}
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t, err := evm.NewToken(client, address)
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if err != nil {
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return nil, errors.Wrap(err, "init token contract")
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}
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c, err := contracts.NewWBnb(address, client)
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if err != nil {
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return nil, errors.Wrap(err, "init wbnb contract")
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}
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return &WBNB{
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Token: t,
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client: client,
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contract: c,
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}, nil
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}
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func (w *WBNB) UnwrapWBNB(ctx context.Context, amount decimal.Decimal, opts ...evm.ExecutionOption) (evm.Transaction, error) {
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return w.client.Execute(ctx, func(ctx context.Context, opts *evm.TransactOpts) (*types.Transaction, error) {
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return w.contract.Withdraw(opts.TransactOpts, w.ValueToBigInt(amount))
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}, opts...)
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}
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