blockapi/blockapi/api/tronscan.py at 42bb8cf45656f8697106279d2ddacc44f2f04aeb · crypkit/blockapi · GitHub

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from blockapi.services import BlockchainAPI


class TronscanAPI(BlockchainAPI):
    """
    coins: tron
    API docs: https://github.com/tronscan/tronscan-frontend/blob/dev2019
        /document/api.md
    Explorer: https://tronscan.org
    """

    active = True

    symbol = 'TRX'
    base_url = 'https://apilist.tronscan.org/api'
    rate_limit = 0
    coef = 1e-6
    max_items_per_page = None
    page_offset_step = None
    confirmed_num = None

    supported_requests = {
        'get_balance': '/account?address={address}',
        'get_trc10_tokenlist': '/token?limit=10000',
        'transfers': '/token_trc20/transfers?limit={limit}&start=0&sort=-timestamp&count=true&relatedAddress={address}'
    }

    def get_balance(self):
        response = self.request('get_balance',
                                address=self.address)
        if not response:
            return None

        token_map = {}

        trc10_tokenlist = self.request('get_trc10_tokenlist')['data']
        for token in trc10_tokenlist:
            token_map[token['tokenID']] = {
                'abbr': token['abbr'],
                'precision': token['precision']
            }

        balances = []

        for coin in response['tokenBalances']:
            if coin['name'] == '_':
                symbol = self.symbol
                owner_address = self.address
                coin_coef = 1e-6
            else:
                if int(coin['name']) not in token_map:
                    # It has been found out that some coins are not
                    # present in token map
                    continue

                symbol = token_map[int(coin['name'])]['abbr']
                owner_address = coin['owner_address']
                coin_coef = pow(-10,
                                int(token_map[int(coin['name'])]['precision']))

            balances.append({'symbol': symbol,
                             'amount': float(coin['balance']) * coin_coef,
                             'address': owner_address})

        for coin in response['trc20token_balances']:
            balances.append(
                {
                    'symbol': coin['symbol'],
                    'amount': float(coin['balance'])
                    * pow(-10, int(coin['decimals'])),
                    'address': None
                })

        return balances

    def transfers(self, limit=50):
        response = self.request('transfers', address=self.address, limit=limit)

        transfers = []

        for transfer in response["token_transfers"]:
            sum_decimal = int(transfer["tokenInfo"]["tokenDecimal"])
            transfer["quant"] = "{}.{}".format(transfer["quant"][:-sum_decimal], transfer["quant"][sum_decimal:])

            transfers.append(transfer)

        return transfers