Created
February 10, 2024 09:18
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CodesOnChain.Contracts.RMUDLottery.ex
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defmodule CodesOnChain.Contracts.RMUDLottery do | |
@moduledoc """ | |
the interact with RMUDLottery on mappo chain. | |
> https://mainnet.optimism.io | |
> 10 | |
> https://explorer.optimism.io | |
""" | |
alias Ethereumex.HttpClient | |
alias Components.Transaction | |
require Logger | |
@endpoint "https://rpc.maplabs.io" | |
@chain_id 10 | |
@contract_addr "0xed8b05159460c900f12075c3b901ca274fd7486f" | |
@func %{ | |
balance_of: "balanceOf(address)", | |
} | |
@gas_limit 1_000_000 | |
def get_module_doc, do: @moduledoc | |
def if_bigger_than(addr, num) do | |
num_dec = Decimal.new("#{num}") | |
not Decimal.lt?(balance_of(addr), num_dec) | |
# bigger or eq | |
end | |
def balance_of(addr) do | |
# addr_bin | |
addr_bin = TypeTranslator.addr_to_bin(addr) | |
# get data | |
data = TypeTranslator.get_data(@func.balance_of, [addr_bin]) | |
# get raw response | |
{:ok, raw} = | |
HttpClient.eth_call( | |
%{ | |
data: data, | |
to: @contract_addr | |
}, | |
"latest", | |
[url: @endpoint, request_timeout: 1000] | |
) | |
# decode | |
[balance] = | |
raw | |
|> Binary.drop(2) | |
|> Base.decode16!(case: :lower) | |
|> ABI.TypeDecoder.decode_raw([{:uint, 256}]) | |
balance | |
|> Decimal.div(1_000_000_000_000_000_000) | |
end | |
end |
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