#!/usr/bin/python3

import subprocess
import pexpect
import re
import uuid
import logging
import requests
import json
import os

from robot.api.deco import keyword
from robot.api import logger
import robot.errors
from robot.libraries.BuiltIn import BuiltIn
from neocore.KeyPair import KeyPair

from Crypto import Random

ROBOT_AUTO_KEYWORDS = False

if os.getenv('ROBOT_PROFILE') == 'selectel_smoke':
    from selectelcdn_smoke_vars import (NEOGO_CLI_PREFIX, NEO_MAINNET_ENDPOINT,
    NEOFS_NEO_API_ENDPOINT, NEOFS_ENDPOINT)
else:
    from neofs_int_vars import (NEOGO_CLI_PREFIX, NEO_MAINNET_ENDPOINT,
    NEOFS_NEO_API_ENDPOINT, NEOFS_ENDPOINT)


NEOFS_CONTRACT = "5f490fbd8010fd716754073ee960067d28549b7d"

@keyword('Init wallet')
def init_wallet():

    filename = "wallets/" + str(uuid.uuid4()) + ".json"
    cmd = ( f"{NEOGO_CLI_PREFIX} wallet init -w {filename}" )

    logger.info(f"Executing shell command: {cmd}")
    out = run_sh(cmd)
    logger.info(f"Command completed with output: {out}")
    return filename

@keyword('Generate wallet')
def generate_wallet(wallet: str):
    cmd = ( f"{NEOGO_CLI_PREFIX} wallet create -w {wallet}" )

    logger.info(f"Executing command: {cmd}")
    p = pexpect.spawn(cmd)
    p.expect(".*")
    p.sendline('\n')
    p.sendline('\n')
    p.sendline('\n')
    p.wait()
    out = p.read()

    logger.info(f"Command completed with output: {out}")

@keyword('Dump Address')
def dump_address(wallet: str):
    #"address": "Ngde6LSaBZ58p72trTNkgqEZmX8dTWBgHo",
    address = ""
    cmd = ( f"{NEOGO_CLI_PREFIX} wallet dump -w {wallet}" )

    logger.info(f"Executing command: {cmd}")
    out = run_sh(cmd)
    logger.info(f"Command completed with output: {out}")

    m = re.search(r'"address": "(\w+)"', out)
    if m.start() != m.end():
        address = m.group(1)
    else:
        raise Exception("Can not get address.")

    return address

@keyword('Dump PrivKey')
def dump_privkey(wallet: str, address: str):
    cmd = ( f"{NEOGO_CLI_PREFIX} wallet export -w {wallet} --decrypt {address}" )

    logger.info(f"Executing command: {cmd}")
    out = run_sh_with_passwd('', cmd)
    logger.info(f"Command completed with output: {out}")

    return out

@keyword('Transfer Mainnet Gas')
def transfer_mainnet_gas(wallet: str, address: str, address_to: str, amount: int):
    cmd = ( f"{NEOGO_CLI_PREFIX} wallet nep5 transfer -w {wallet} -r http://main_chain.neofs.devenv:30333 --from {address} "
            f"--to {address_to} --token gas --amount {amount}" )

    logger.info(f"Executing command: {cmd}")
    out = run_sh_with_passwd('', cmd)
    logger.info(f"Command completed with output: {out}")

    if not re.match(r'^(\w{64})$', out):
        raise Exception("Can not get Tx.")

    return out

@keyword('Withdraw Mainnet Gas')
def withdraw_mainnet_gas(wallet: str, address: str, scripthash: str, amount: int):
    cmd = ( f"{NEOGO_CLI_PREFIX} contract invokefunction -w {wallet} -a {address} -r http://main_chain.neofs.devenv:30333 "
            f"{NEOFS_CONTRACT} withdraw {scripthash} int:{amount}  -- {scripthash}" )

    logger.info(f"Executing command: {cmd}")
    out = run_sh_with_passwd('', cmd)
    logger.info(f"Command completed with output: {out}")

    #if not re.match(r'^(\w{64})$', out):
    #    raise Exception("Can not get Tx.")

    return out

@keyword('Mainnet Balance')
def mainnet_balance(address: str):
    request = 'curl -X POST '+NEO_MAINNET_ENDPOINT+' --cacert ca/nspcc-ca.pem -H \'Content-Type: application/json\' -d \'{ "jsonrpc": "2.0", "id": 5, "method": "getnep5balances", "params": [\"'+address+'\"] }\''
    logger.info(f"Executing request: {request}")

    complProc = subprocess.run(request, check=True, universal_newlines=True,
            stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=15, shell=True)

    out = complProc.stdout
    logger.info(out)

    m = re.search(r'"668e0c1f9d7b70a99dd9e06eadd4c784d641afbc","amount":"([\d\.]+)"', out)
    if not m.start() != m.end():
        raise Exception("Can not get mainnet gas balance.")

    amount = m.group(1)

    return amount

@keyword('Expexted Mainnet Balance')
def expected_mainnet_balance(address: str, expected: int):

    amount = mainnet_balance(address)

    if float(amount) != float(expected):
        raise Exception(f"Expected amount ({expected}) of GAS has not been found. Found {amount}.")

    return True

@keyword('NeoFS Deposit')
def neofs_deposit(wallet: str, address: str, scripthash: str, amount: int, wallet_pass:str=''):
    cmd = ( f"{NEOGO_CLI_PREFIX} contract invokefunction -w {wallet} -a {address} "
            f"-r {NEOFS_NEO_API_ENDPOINT} {NEOFS_CONTRACT} "
            f"deposit {scripthash} int:{amount} bytes: -- {scripthash}")

    logger.info(f"Executing command: {cmd}")
    out = run_sh_with_passwd(wallet_pass, cmd)
    logger.info(f"Command completed with output: {out}")

    m = re.match(r'^Sent invocation transaction (\w{64})$', out)
    if m is None:
        raise Exception("Can not get Tx.")

    tx = m.group(1)

    # Sent invocation transaction

    return tx

@keyword('Transaction accepted in block')
def transaction_accepted_in_block(tx_id):
    """
    This function return True in case of accepted TX.
    Parameters:
    :param tx_id:           transaction is
    :rtype:                 block number or Exception
    """

    logger.info("Transaction id: %s" % tx_id)

    TX_request = 'curl -X POST '+NEO_MAINNET_ENDPOINT+' --cacert ca/nspcc-ca.pem -H \'Content-Type: application/json\' -d \'{ "jsonrpc": "2.0", "id": 5, "method": "gettransactionheight", "params": [\"'+ tx_id +'\"] }\''

    logger.info(f"Executing command: {TX_request}")

    complProc = subprocess.run(TX_request, check=True, universal_newlines=True,
            stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=15, shell=True)
    logger.info(complProc.stdout)
    response = json.loads(complProc.stdout)

    if (response['result'] == 0):
        raise Exception( "Transaction is not found in the blocks." )

    logger.info("Transaction has been found in the block %s." % response['result'] )
    return response['result']

@keyword('Get Transaction')
def get_transaction(tx_id: str):
    """
    This function return information about TX.
    Parameters:
    :param tx_id:           transaction id
    """

    TX_request = 'curl -X POST '+NEO_MAINNET_ENDPOINT+' --cacert ca/nspcc-ca.pem -H \'Content-Type: application/json\' -d \'{ "jsonrpc": "2.0", "id": 5, "method": "getapplicationlog", "params": [\"'+tx_id+'\"] }\''
    complProc = subprocess.run(TX_request, check=True, universal_newlines=True,
            stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=15, shell=True)
    logger.info(complProc.stdout)

def run_sh(args):
    complProc = subprocess.run(args, check=True, universal_newlines=True,
                stdout=subprocess.PIPE, stderr=subprocess.PIPE,
                timeout=150, shell=True)
    output, errors = complProc.stdout, complProc.stderr
    if errors:
        return errors
    return output


def run_sh_with_passwd(passwd, cmd):
    p = pexpect.spawn(cmd)
    p.expect(".*")
    p.sendline(passwd)
    p.wait()
    # throw a string with password prompt
    # take a string with tx hash
    tx_hash = p.read().splitlines()[-1]
    return tx_hash.decode()



#@keyword('Transfer Mainnet Gas')
#def transfer_mainnet_gas(wallet_to: str, amount: int):

#
#    Cmd = f'docker exec -it main_chain neo-go wallet nep5 transfer -w wallets/wallet.json -r http://main_chain.neofs.devenv:30333 --from NTrezR3C4X8aMLVg7vozt5wguyNfFhwuFx --to {wallet_to} --token gas --amount {amount}'
#    command = ['docker', 'exec', '-it', 'main_chain', 'neo-go', 'wallet', 'nep5', 'transfer', '-w', 'wallets/wallet.json', '-r', 'http://main_chain.neofs.devenv:30333', '--from NTrezR3C4X8aMLVg7vozt5wguyNfFhwuFx', '--to', 'NULwe3UAHckN2fzNdcVg31tDiaYtMDwANt', '--token gas', '--amount', '5']



#    logger.info("Cmd: %s" % Cmd)

#import subprocess
#command = ['myapp', '--arg1', 'value_for_arg1']
#p = subprocess.Popen(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
#output = p.communicate(input='some data'.encode())[0]

#a=subprocess.Popen("docker run -t -i fedora bash", shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
#4. >>> a.stdin.write("exit\n")
#5. >>> print a.poll()

    complProc = subprocess.Popen(Cmd.split(), stdin=subprocess.PIPE,
                stdout=subprocess.PIPE, stderr=subprocess.STDOUT, shell=True)
    complProc.stdin.write("\n".encode())

    output = complProc.stdout.read() #.communicate(input=''.encode())[0]

    logger.info("Output: %s" % output)

@keyword('Request NeoFS Deposit')
def request_neofs_deposit(public_key: str):
    """
    This function requests Deposit to the selected public key.
    :param public_key:      neo public key
    """

    response = requests.get('https://fs.localtest.nspcc.ru/api/deposit/'+str(public_key), verify='ca/nspcc-ca.pem')

    if response.status_code != 200:
        BuiltIn().fatal_error('Can not run Deposit to {} with error: {}'.format(public_key, response.text))
    else:
        logger.info("Deposit has been completed for '%s'; tx: '%s'" % (public_key, response.text) )

    return response.text

@keyword('Get Balance')
def get_balance(privkey: str):
    """
    This function returns NeoFS balance for selected public key.
    :param public_key:      neo public key
    """

    balance = _get_balance_request(privkey)

    return balance

@keyword('Expected Balance')
def expected_balance(privkey: str, init_amount: float, deposit_size: float):
    """
    This function returns NeoFS balance for selected public key.
    :param public_key:      neo public key
    :param init_amount:     initial number of tokens in the account
    :param deposit_size:    expected amount of the balance increasing
    """

    balance = _get_balance_request(privkey)

    deposit_change = round((float(balance) - init_amount),8)
    if deposit_change != deposit_size:
        raise Exception('Expected deposit increase: {}. This does not correspond to the actual change in account: {}'.format(deposit_size, deposit_change))

    logger.info('Expected deposit increase: {}. This correspond to the actual change in account: {}'.format(deposit_size, deposit_change))

    return deposit_change

def _get_balance_request(privkey: str):
    '''
    Internal method.
    '''
    Cmd = f'neofs-cli --key {privkey} --rpc-endpoint {NEOFS_ENDPOINT} accounting balance'
    logger.info("Cmd: %s" % Cmd)
    complProc = subprocess.run(Cmd, check=True, universal_newlines=True,
                stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=150, shell=True)
    output = complProc.stdout
    logger.info("Output: %s" % output)


    m = re.match(r'(-?[\d.\.?\d*]+)', output )
    if m is None:
        BuiltIn().fatal_error('Can not parse balance: "%s"' % output)
    balance = m.group(1)

    logger.info("Balance for '%s' is '%s'" % (privkey, balance) )

    return balance