130 lines
4.8 KiB
Nim
130 lines
4.8 KiB
Nim
# used to be statusgo_backend, should be merged with tokens
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import
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json, chronicles, strformat, stint, strutils, sequtils, tables, atomics
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import
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web3/[ethtypes, conversions], json_serialization
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import
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../statusgo_backend/[core, wallet, settings],
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../statusgo_backend/tokens as statusgo_backend_tokens,
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../types/[setting, network, rpc_response],
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./contracts
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from ../utils import parseAddress
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var
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customTokens {.threadvar.}: seq[Erc20Contract]
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proc visibleTokensSNTDefault(network: Network): JsonNode =
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let symbol = network.sntSymbol()
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let response = getSetting[string](Setting.VisibleTokens, "{}").parseJSON
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if not response.hasKey($network.chainId):
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# Set STT/SNT visible by default
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response[$network.chainId] = %* [symbol]
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return response
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proc convertStringSeqToERC20ContractSeq*(network: Network, stringSeq: seq[string]): seq[Erc20Contract] =
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result = @[]
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for v in stringSeq:
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let t = findErc20Contract(network.chainId, v)
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if t != nil: result.add t
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let ct = customTokens.findBySymbol(v)
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if ct != nil: result.add ct
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proc toggleAsset*(network: Network, symbol: string): seq[Erc20Contract] =
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let visibleTokens = visibleTokensSNTDefault(network)
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var visibleTokenList = visibleTokens[$network.chainId].to(seq[string])
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let symbolIdx = visibleTokenList.find(symbol)
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if symbolIdx > -1:
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visibleTokenList.del(symbolIdx)
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else:
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visibleTokenList.add symbol
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visibleTokens[$network.chainId] = newJArray()
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visibleTokens[$network.chainId] = %* visibleTokenList
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let saved = saveSetting(Setting.VisibleTokens, $visibleTokens)
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convertStringSeqToERC20ContractSeq(network, visibleTokenList)
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proc hideAsset*(network: Network, symbol: string) =
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let visibleTokens = visibleTokensSNTDefault(network)
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var visibleTokenList = visibleTokens[$network.chainId].to(seq[string])
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var symbolIdx = visibleTokenList.find(symbol)
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if symbolIdx > -1:
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visibleTokenList.del(symbolIdx)
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visibleTokens[$network.chainId] = newJArray()
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visibleTokens[$network.chainId] = %* visibleTokenList
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discard saveSetting(Setting.VisibleTokens, $visibleTokens)
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proc getVisibleTokens*(network: Network): seq[Erc20Contract] =
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let visibleTokens = visibleTokensSNTDefault(network)
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var visibleTokenList = visibleTokens[$network.chainId].to(seq[string])
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let customTokens = statusgo_backend_tokens.getCustomTokens()
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result = convertStringSeqToERC20ContractSeq(network, visibleTokenList)
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proc getToken*(network: Network, tokenAddress: string): Erc20Contract =
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allErc20ContractsByChainId(network.chainId).concat(statusgo_backend_tokens.getCustomTokens()).findByAddress(tokenAddress.parseAddress)
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proc getTokenBalance*(network: Network, tokenAddress: string, account: string): string =
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var postfixedAccount: string = account
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postfixedAccount.removePrefix("0x")
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let payload = %* [{
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"to": tokenAddress, "from": account, "data": fmt"0x70a08231000000000000000000000000{postfixedAccount}"
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}, "latest"]
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let response = callPrivateRPC("eth_call", payload)
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let balance = response.parseJson["result"].getStr
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var decimals = 18
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let address = parseAddress(tokenAddress)
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let t = findErc20Contract(network.chainId, address)
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let ct = statusgo_backend_tokens.getCustomTokens().findByAddress(address)
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if t != nil:
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decimals = t.decimals
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elif ct != nil:
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decimals = ct.decimals
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result = $hex2Token(balance, decimals)
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proc getSNTAddress*(network: Network): string =
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let contract = findErc20Contract(network.chainId, network.sntSymbol)
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return $contract.address
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proc getSNTBalance*(network: Network, account: string): string =
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result = getTokenBalance(network, getSNTAddress(network), account)
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proc getTokenString*(contract: Contract, methodName: string): string =
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let payload = %* [{
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"to": $contract.address,
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"data": contract.methods[methodName].encodeAbi()
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}, "latest"]
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let responseStr = callPrivateRPC("eth_call", payload)
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let response = Json.decode(responseStr, RpcResponse)
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if not response.error.isNil:
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raise newException(RpcException, "Error getting token string - " & methodName & ": " & response.error.message)
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if response.result == "0x":
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return ""
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let size = fromHex(Stuint[256], response.result[66..129]).truncate(int)
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result = response.result[130..129+size*2].parseHexStr
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proc tokenName*(contract: Contract): string = getTokenString(contract, "name")
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proc tokenSymbol*(contract: Contract): string = getTokenString(contract, "symbol")
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proc tokenDecimals*(contract: Contract): int =
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let payload = %* [{
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"to": $contract.address,
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"data": contract.methods["decimals"].encodeAbi()
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}, "latest"]
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let responseStr = callPrivateRPC("eth_call", payload)
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let response = Json.decode(responseStr, RpcResponse)
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if not response.error.isNil:
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raise newException(RpcException, "Error getting token decimals: " & response.error.message)
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if response.result == "0x":
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return 0
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result = parseHexInt(response.result)
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