class Indium

# File lib/indium.rb, line 73
def self.custom(url, chain_id = 246)
  self.new(url, chain_id)
end

# File lib/indium.rb, line 61
def self.local(chain_id = 246)
  self.new('http://localhost:8545',chain_id)
end

# File lib/indium.rb, line 9
def initialize(node_url, chain_id)
  @node_url = node_url
  @chain_id = chain_id
  Eth.configure do |config|
    config.chain_id = chain_id # nil by default, meaning valid on any chain
  end
  @client = Ethereum::HttpClient.new(node_url, proxy = nil, log = true) # log to /tmp/ethereum_ruby_http.log
end

# File lib/indium.rb, line 69
def self.prod(chain_id = 246)
  self.new('http://rpcnode.indium.network:8545',chain_id)
end

# File lib/indium.rb, line 65
def self.test(chain_id = 246)
  self.new('http://testrpcnode.indium.network:8545',chain_id)
end

# File lib/indium.rb, line 18
def balance(pubkey)
  @client.get_balance(pubkey)
end

# File lib/indium.rb, line 56
def create_keypair
  kp = Eth::Key.new
  return kp.address, kp.private_hex
end

# File lib/indium.rb, line 52
def eth_str_to_wei(es)
  (BigDecimal.new(es.to_s) * BigDecimal.new("1000_000_000_000_000_000")).to_i
end

# File lib/indium.rb, line 22
def get_receipt(tx_hash)
  @client.eth_get_transaction_receipt(tx_hash)
end

# File lib/indium.rb, line 26
def transfer(signtxn_url, sender_privkey, receiver_pubkey, amount, hex_data = "", gas_limit = 21_000, gas_price = 3_141_592)
      if signtxn_url
              http = HTTPClient.new
              params = {
                "rpc" => @node_url,
                "receiver" => receiver_pubkey,
                "sender" => Eth::Key.new(priv: sender_privkey).address,
                "privkey" => sender_privkey,
                "amount" => amount,
                "gaslimit" => gas_limit,
                "gasprice" => gas_price,
                "chain" => @chain_id,
                "data" => hex_data
              }
              return http.post(signtxn_url, params)
      else
              @client.gas_price = gas_price
              @client.gas_limit = gas_limit
              return @client.transfer(sender_privkey, receiver_pubkey, amount)
      end
end

# File lib/indium.rb, line 48
def wei_to_eth_str(w)
  (BigDecimal.new(w.to_i) / BigDecimal.new("1000_000_000_000_000_000")).to_s
end