github.com/intfoundation/intchain@v0.0.0-20220727031208-4316ad31ca73/contracts/chequebook/api.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package chequebook
    18  
    19  import (
    20  	"errors"
    21  	"math/big"
    22  
    23  	"github.com/intfoundation/intchain/common"
    24  )
    25  
    26  const Version = "1.0"
    27  
    28  var errNoChequebook = errors.New("no chequebook")
    29  
    30  type Api struct {
    31  	chequebookf func() *Chequebook
    32  }
    33  
    34  func NewApi(ch func() *Chequebook) *Api {
    35  	return &Api{ch}
    36  }
    37  
    38  func (self *Api) Balance() (string, error) {
    39  	ch := self.chequebookf()
    40  	if ch == nil {
    41  		return "", errNoChequebook
    42  	}
    43  	return ch.Balance().String(), nil
    44  }
    45  
    46  func (self *Api) Issue(beneficiary common.Address, amount *big.Int) (cheque *Cheque, err error) {
    47  	ch := self.chequebookf()
    48  	if ch == nil {
    49  		return nil, errNoChequebook
    50  	}
    51  	return ch.Issue(beneficiary, amount)
    52  }
    53  
    54  func (self *Api) Cash(cheque *Cheque) (txhash string, err error) {
    55  	ch := self.chequebookf()
    56  	if ch == nil {
    57  		return "", errNoChequebook
    58  	}
    59  	return ch.Cash(cheque)
    60  }
    61  
    62  func (self *Api) Deposit(amount *big.Int) (txhash string, err error) {
    63  	ch := self.chequebookf()
    64  	if ch == nil {
    65  		return "", errNoChequebook
    66  	}
    67  	return ch.Deposit(amount)
    68  }