lto_bridge.py

import os
from operator import itemgetter
from json import JSONDecodeError
from time import sleep

import click
import requests
import pendulum


LTO_NODE = 'http://127.0.0.1:6869'
LTO_API_KEY = os.environ['LTO_API_KEY']
BRIDGE_TROLL_FEES = '3JrGV6TeEV3ovVjsh9SPqQL48EDLET47B9U'
BRIDGE_TROLL = '3JugjxT51cTjWAsgnQK4SpmMqK6qua1VpXH'
INITIAL_SUPPLY = 500_000_000
CROWDSALE_BURNED = 39_267_891.526_663_22


s = requests.session()
s.headers['X-API-Key'] = LTO_API_KEY


class ApiException(Exception):
    pass


def lto(request):
    r = s.get(f'{LTO_NODE}{request}')
    r.raise_for_status()
    try:
        return r.json()
    except JSONDecodeError:
        raise ApiException(r.text)


def get_transactions(limit):
    bridge_txs = lto(f'/transactions/address/{BRIDGE_TROLL}/limit/{limit}')[0]
    fees_txs = lto(f'/transactions/address/{BRIDGE_TROLL_FEES}/limit/{limit}')[0]
    return list(sorted(bridge_txs + fees_txs, key=itemgetter('height')))


def tokens(value):
    return value / 1e8


def pretty_tx(tx):
    if tx['sender'] == BRIDGE_TROLL:
        symbol, message = '🌝', 'to mainnet'
    if tx['recipient'] == BRIDGE_TROLL:
        symbol, message = '🐬', 'to erc20'
    if tx['recipient'] == BRIDGE_TROLL_FEES:
        symbol, message = '🔥', 'burned'
    ts = pendulum.from_timestamp(tx['timestamp'] / 1000)
    value = tokens(tx['amount'])
    print(
        ts.to_datetime_string(),
        symbol,
        f'{value:12,.0f}',
        message,
        sep='  ',
    )


@click.command()
@click.option('--watch', is_flag=True)
def main(watch):
    seen = set()
    burned = 0
    mainnet = 0
    for tx in get_transactions(10000):
        pretty_tx(tx)
        seen.add(tx['id'])
        if tx['recipient'] == BRIDGE_TROLL_FEES:
            burned += tokens(tx['amount'])
        if tx['sender'] == BRIDGE_TROLL:
            mainnet += tokens(tx['amount'])

    supply = INITIAL_SUPPLY - CROWDSALE_BURNED - burned
    print(f'--  burned = {burned:,.0f} from bridge + {CROWDSALE_BURNED:,.0f} from crowdsale')
    print(f'--  moved to mainnet = {mainnet:,.0f}')
    print(f'--  total supply = {supply:,.0f}')
    
    if watch:
        loop(seen)


def loop(seen):
    while True:
        for tx in get_transactions(100):
            if tx['id'] in seen:
                continue
            pretty_tx(tx)
            seen.add(tx['id'])
        sleep(60)


if __name__ == '__main__':
    main()