# standard imports
import os
import logging

# external imports
from chainlib.eth.unittest.ethtester import EthTesterCase
from chainlib.connection import RPCConnection
from chainlib.eth.nonce import RPCNonceOracle
from chainlib.eth.tx import receipt
from chainlib.eth.tx import TxFactory
from chainlib.eth.tx import TxFormat
from chainlib.eth.contract import ABIContractEncoder
from chainlib.eth.contract import ABIContractType

script_dir = os.path.dirname(os.path.realpath(__file__))
contract_dir = os.path.join(script_dir, '..', '..', 'solidity')

logg = logging.getLogger(__name__)


class TestEthCapped(EthTesterCase):

    def setUp(self):
        super(TestEthCapped, self).setUp()

        self.set_method = None

        self.conn = RPCConnection.connect(self.chain_spec, 'default')
        nonce_oracle = RPCNonceOracle(self.accounts[0], self.conn)

        f = open(os.path.join(contract_dir, 'CappedTest.bin'))
        code = f.read()
        f.close()

        txf = TxFactory(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
        tx = txf.template(self.accounts[0], None, use_nonce=True)

        self.max_supply_value = 1024
        enc = ABIContractEncoder()
        enc.uint256(self.max_supply_value)
        args = enc.get()

        tx = txf.set_code(tx, code + args)
        (tx_hash_hex, o) = txf.build(tx)
        self.conn.do(o)
        o = receipt(tx_hash_hex)
        r = self.conn.do(o)
        self.assertEqual(r['status'], 1)
        self.address = r['contract_address']
        logg.debug('published capped test contract with hash {}'.format(r))


    def set_max_supply(self, contract_address, sender_address, v, tx_format=TxFormat.JSONRPC):
        nonce_oracle = RPCNonceOracle(self.accounts[0], self.conn)
        txf = TxFactory(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
        enc = ABIContractEncoder()
        enc.method('setMaxSupply')
        enc.typ(ABIContractType.UINT256)
        enc.uint256(v)
        data = enc.get()
        tx = txf.template(sender_address, contract_address, use_nonce=True)
        tx = txf.set_code(tx, data)
        tx = txf.finalize(tx, tx_format)
        return tx