mirror of https://github.com/waku-org/nwaku.git
33 lines
1.1 KiB
Nim
33 lines
1.1 KiB
Nim
import web3, chronos, options, stint
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proc deployContract*(web3: Web3, code: string, gasPrice = 0, contractInput = ""): Future[ReceiptObject] {.async.} =
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# the contract input is the encoded version of contract constructor's input
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# use nim-web3/encoding.nim module to find the appropriate encoding procedure for different argument types
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# e.g., consider the following contract constructor in solidity
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# constructor(uint256 x, uint256 y)
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#
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# the contractInput can be calculated as follows
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# let
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# x = 1.u256
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# y = 5.u256
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# contractInput = encode(x).data & encode(y).data
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# Note that the order of encoded inputs should match the order of the constructor inputs
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let provider = web3.provider
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let accounts = await provider.eth_accounts()
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var code = code
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if code[1] notin {'x', 'X'}:
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code = "0x" & code
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var tr: EthSend
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tr.source = web3.defaultAccount
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tr.data = code & contractInput
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tr.gas = Quantity(3000000000000).some
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if gasPrice != 0:
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tr.gasPrice = some(gasPrice)
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let r = await web3.send(tr)
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return await web3.getMinedTransactionReceipt(r)
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proc ethToWei*(eth: UInt256): UInt256 =
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eth * 1000000000000000000.u256
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