# standard imports
import logging
import time

# third-party imports
import pytest
import celery
from web3.exceptions import ValidationError

# local imports
from cic_eth.db.enum import StatusEnum
from cic_eth.db.models.otx import Otx
from cic_eth.db.models.tx import TxCache
from cic_eth.db.models.base import SessionBase
from cic_eth.eth.task import sign_and_register_tx
from cic_eth.eth.task import sign_tx
from cic_eth.eth.token import TokenTxFactory
from cic_eth.eth.token import TxFactory
from cic_eth.eth.token import cache_transfer_data
from cic_eth.eth.rpc import RpcClient
from cic_eth.queue.tx import create as queue_create
from cic_eth.error import OutOfGasError
from cic_eth.db.models.role import AccountRole
from cic_eth.error import AlreadyFillingGasError

logg = logging.getLogger()


def test_refill_gas(
    default_chain_spec,
    init_eth_tester,
    init_rpc,
    init_database,
    cic_registry,
    init_eth_account_roles,
    celery_session_worker,
    eth_empty_accounts,
        ):

    provider_address = AccountRole.get_address('GAS_GIFTER', init_database)
    receiver_address = eth_empty_accounts[0]

    c = init_rpc
    refill_amount = c.refill_amount()

    balance = init_rpc.w3.eth.getBalance(receiver_address)
    s = celery.signature(
            'cic_eth.eth.tx.refill_gas',
            [
                receiver_address,
                str(default_chain_spec),
            ],
            )

    t = s.apply_async()
    r = t.get()
    t.collect()
    assert t.successful()

    s = celery.signature(
            'cic_eth.eth.tx.send',
            [
                [r],
                str(default_chain_spec),
            ],
            )
    t = s.apply_async()
    r = t.get()
    t.collect()
    assert t.successful()

    init_eth_tester.mine_block()
    balance_new = init_rpc.w3.eth.getBalance(receiver_address)
    assert balance_new == (balance + refill_amount)

    # Verify that entry is added in TxCache
    session = SessionBase.create_session()
    q = session.query(Otx)
    q = q.join(TxCache)
    q = q.filter(TxCache.recipient==receiver_address)
    r = q.first()
    
    assert r.status == StatusEnum.SENT


def test_refill_deduplication(
    default_chain_spec,
    init_rpc,
    init_database,
    init_eth_account_roles,
    cic_registry,
    celery_session_worker,
    eth_empty_accounts,
        ):

    provider_address = AccountRole.get_address('ETH_GAS_PROVIDER_ADDRESS', init_database)
    receiver_address = eth_empty_accounts[0]

    c = init_rpc
    refill_amount = c.refill_amount()

    s = celery.signature(
            'cic_eth.eth.tx.refill_gas',
            [
                receiver_address,
                str(default_chain_spec),
            ],
            )

    t = s.apply_async()
    r = t.get()
    for e in t.collect():
        pass
    assert t.successful()

    s = celery.signature(
            'cic_eth.eth.tx.refill_gas',
            [
                receiver_address,
                str(default_chain_spec),
                ],
            )

    t = s.apply_async()
    with pytest.raises(AlreadyFillingGasError):
        t.get()


def test_check_gas(
    default_chain_spec,
    init_eth_tester,
    init_w3,
    init_rpc,
    eth_empty_accounts,
    init_database,
    cic_registry,
    celery_session_worker,
    bancor_registry,
    bancor_tokens,
        ):

    provider_address = init_w3.eth.accounts[0]
    gas_receiver_address = eth_empty_accounts[0]
    token_receiver_address = init_w3.eth.accounts[1]
    
    c = init_rpc
    txf = TokenTxFactory(gas_receiver_address, c)
    tx_transfer = txf.transfer(bancor_tokens[0], token_receiver_address, 42, default_chain_spec)

    (tx_hash_hex, tx_signed_raw_hex) = sign_and_register_tx(tx_transfer, str(default_chain_spec), None)
    
    gas_price = c.gas_price()
    gas_limit = tx_transfer['gas']

    s = celery.signature(
            'cic_eth.eth.tx.check_gas',
            [
                [tx_hash_hex],
                str(default_chain_spec),
                [],
                gas_receiver_address,
                gas_limit * gas_price,
                ],
            )
    t = s.apply_async()
    with pytest.raises(OutOfGasError):
        r = t.get()
    #assert len(r) == 0

    time.sleep(1)
    t.collect()

    session = SessionBase.create_session()
    q = session.query(Otx)
    q = q.filter(Otx.tx_hash==tx_hash_hex)
    r = q.first()
    session.close()
    assert r.status == StatusEnum.WAITFORGAS


def test_resend_with_higher_gas(
    default_chain_spec,
    init_eth_tester,
    init_w3,
    init_rpc,
    init_database,
    cic_registry,
    celery_session_worker,
    bancor_registry,
    bancor_tokens,
    ):

    c = init_rpc
    txf = TokenTxFactory(init_w3.eth.accounts[0], c)

    tx_transfer = txf.transfer(bancor_tokens[0], init_w3.eth.accounts[1], 1024, default_chain_spec)
    logg.debug('txtransfer {}'.format(tx_transfer))
    (tx_hash_hex, tx_signed_raw_hex) = sign_tx(tx_transfer, str(default_chain_spec))
    logg.debug('signed raw {}'.format(tx_signed_raw_hex))
    queue_create(
        tx_transfer['nonce'],
        tx_transfer['from'],
        tx_hash_hex,
        tx_signed_raw_hex,
        str(default_chain_spec),
            )
    logg.debug('create {}'.format(tx_transfer['from']))
    cache_transfer_data(
        tx_hash_hex,
        tx_transfer, #_signed_raw_hex,
            )

    s_resend = celery.signature(
            'cic_eth.eth.tx.resend_with_higher_gas',
            [
                tx_hash_hex,
                str(default_chain_spec),
            ],
            )
    t = s_resend.apply_async()

    i = 0
    for r in t.collect():
        logg.debug('{} {}'.format(i, r[0].get()))
        i += 1 
    
    assert t.successful()

#
#def test_resume(
#    default_chain_spec,
#    init_eth_tester,
#    w3,
#    w3_account_roles,
#    init_database,
#    bancor_tokens,
#    celery_session_worker,
#    eth_empty_accounts,
#        ):
#
#    txf = TokenTxFactory()
#
#    tx_transfer = txf.transfer(bancor_tokens[0], eth_empty_accounts[1], 1024)
#    (tx_hash_hex, tx_signed_raw_hex) = sign_and_register_tx(tx_transfer)
#
#    resume_tx()