def exchange_fees_coin():
"""'Exchange fees by cryptocurrency' page.
"""
# If 'calc_currency' exists in cookie, use it
currency = request.cookies.get('calc_currency')
if currency:
curr = currency
else:
curr = Params.DEFAULT_CURRENCY
curr = get_coin(curr)
feedback_form = FeedbackForm()
# Get exchanges
coins = get_coins(pos_limit=Params.BROWSE_FEE_COINS, status="Active")
# Get Meta tags
title = get_meta_tags('Exchanges|Fees|Coin',
'Title')
description = get_meta_tags('Exchanges|Fees|Coin',
'Description')
# Actions if Feedback Form was filled
if feedback_form.feedback_submit.data:
if feedback_form.validate():
manage_feedback_form(feedback_form, request.path)
# Load page
return render_template('exchange_fees_coin.html',
curr=curr,
title=title,
description=description,
feedback_form=feedback_form,
coins=coins)
def get_best_coinZ(self, coin, baseCoin):
"""Finds a coin that trades in the exchange against both given coins.
Returns a 'CoinZ' object.
"""
# Get CoinZ's that trade against 'coin' & 'baseCoin'
coinZ_coin = self.get_all_coinZs(coin)
coinZ_baseCoin = self.get_all_coinZs(baseCoin)
# Find CoinZ that trades agains both coins with highest liquidity
winning_coinZ = CoinZ(None, -1, -1)
for coinZ in coinZ_coin:
for coinZ_2 in coinZ_baseCoin:
if coinZ[0] == coinZ_2[0]:
if min(coinZ[1], coinZ_2[1]) < winning_coinZ.min_liq():
continue
# If same liquidity (or no available), BTC prevails
elif min(coinZ[1], coinZ_2[1]) == winning_coinZ.min_liq():
if (winning_coinZ.coin
and winning_coinZ.coin.id == 'BTC'):
continue
winning_coinZ = CoinZ(get_coin(coinZ[0]), coinZ[1],
coinZ_2[1])
if not winning_coinZ.coin:
return None
self.logger.debug("[{}] Chosen CoinZ: {}".format(
self.exchange.id, winning_coinZ))
return winning_coinZ
def exchange_fees_exch():
"""'Exchange fees by exchange' page.
"""
# If 'calc_currency' exists in cookie, use it
currency = request.cookies.get('calc_currency')
if currency:
curr = currency
else:
curr = Params.DEFAULT_CURRENCY
curr = get_coin(curr)
feedback_form = FeedbackForm()
# Get exchanges
exchanges = get_exchanges(['Exchange'], status='Active')
# Get promos
promos = get_promos()
# Get Meta tags
title = get_meta_tags('Exchanges|Fees|Exch',
'Title')
description = get_meta_tags('Exchanges|Fees|Exch',
'Description')
# Actions if Feedback Form was filled
if feedback_form.feedback_submit.data:
if feedback_form.validate():
manage_feedback_form(feedback_form, request.path)
return render_template('exchange_fees_exch.html',
curr=curr,
title=title,
description=description,
feedback_form=feedback_form,
exchanges=exchanges,
promos=promos)
def exchange_fees_by_exch(exch_id):
"""Displays the fees of the exchange given as argument.
"""
exchange = get_exchange(exch_id)
# If exchange not recognnized, redirect
if not exchange:
return redirect(url_for('exchange_fees_exch'))
# Get Exchange fees
trading_fees = get_trading_fees_by_exch(exch_id)
dep_with_fees = get_dep_with_fees_by_exch(exch_id)
# Get Exchange data
exch_data = get_exchange_data(exchange.id,
exchange.site_url,
exchange_info_file,
logger)
# Get promos
promos = get_promos()
# If 'calc_currency' exists in cookie, use it
currency = request.cookies.get('calc_currency')
if currency:
curr = currency
else:
curr = Params.DEFAULT_CURRENCY
curr = get_coin(curr)
# Get forms
feedback_form = FeedbackForm()
promo_form = PromoForm()
# Get Meta tags
title = get_meta_tags('Exchanges|Fees|Exch|Exch',
'Title',
[exchange.name])
description = get_meta_tags('Exchanges|Fees|Exch|Exch',
'Description',
[exchange.name])
# Get Texts
trading_text = Markup(get_exch_text(exch_id, 'Trade'))
withdrawal_text = Markup(get_exch_text(exch_id, 'Withdrawal'))
# Actions if Feedback Form was filled
if feedback_form.feedback_submit.data:
if feedback_form.validate():
manage_feedback_form(feedback_form, request.path)
# Load page
return render_template('exchange_fees_by_exch.html',
exchange=exchange,
curr=curr,
title=title,
description=description,
feedback_form=feedback_form,
promo_form=promo_form,
trading_text=trading_text,
withdrawal_text=withdrawal_text,
trading_fees=trading_fees,
dep_with_fees=dep_with_fees,
exch_data=exch_data,
promos=promos)
def home():
url_orig_coin = 'empty'
url_dest_coin = 'empty'
input_form = SearchForm()
# If 'calc_currency' exists in cookie, use it
currency = request.cookies.get('calc_currency')
if currency:
curr = currency
input_form.currency.data = currency
else:
curr = Params.DEFAULT_CURRENCY
curr = get_coin(curr)
exchanges = get_exchanges(['Exchange'], status='Active')
user_exchanges = [exch.id for exch in exchanges]
# Get Blog information
posts = get_latest_posts(None, 6)
# Get Meta tags
title = get_meta_tags('Home', 'Title')
description = get_meta_tags('Home', 'Description')
# Get forms
feedback_form = FeedbackForm()
promo_form = PromoForm()
# Get promos
promos = get_promos()
# Actions if Feedback Form was filled
if promo_form.promo_submit.data:
if promo_form.validate():
manage_promo_form(promo_form, 'Promos')
# Actions if Feedback Form was filled
if feedback_form.feedback_submit.data:
if feedback_form.validate():
manage_feedback_form(feedback_form, request.path)
resp = make_response(render_template('home.html', form=input_form,
curr=curr, exchanges=exchanges,
user_exchanges=user_exchanges,
title=title,
description=description,
feedback_form=feedback_form,
promo_form=promo_form,
promos=promos,
url_orig_coin=url_orig_coin,
url_dest_coin=url_dest_coin,
add_flaticon_link=True,
posts=posts))
# Store session ID in cookie if it is not already stored
session_id = request.cookies.get('session')
if not session_id:
resp.set_cookie('session', token_hex(8))
session_id = request.cookies.get('session')
return resp
def perform_trade(self, sell_amt, sell_coin, buy_coin):
"""Performs the trade from 'sell_coin' to 'buy_coin'.
Returns a 'Trade' object
"""
# Find the trading fee for the given pairget_trade_fee(
fee_amt_perc, fee_coin, fee_literal = self.get_trade_fee(
sell_amt, sell_coin, buy_coin)
if fee_amt_perc is None:
self.logger.warning("perform_trade: No trade fee for '{}[{}/{}]'."
"Skipping trade calculation.".format(
self.exchange.id, sell_coin.id,
buy_coin.id))
return None
# Perform trade:
buy_amt = fx_exchange(sell_coin.id, buy_coin.id,
sell_amt * (1 - fee_amt_perc / 100), self.logger)
if buy_amt is None:
self.logger.warning("perform_trade [2]: Trade could not be "
"performed '{}[{}/{}]'. "
"Skipping trade calculation.".format(
self.exchange.id, sell_coin.id,
buy_coin.id))
return None
elif buy_amt <= 0:
self.logger.warning(
"perform_trade [3]: Trade performed with negative outcome '{}[{} {} --> {} {}]'. "
"Skipping trade calculation.".format(self.exchange.id,
sell_amt, sell_coin.id,
buy_amt, buy_coin.id))
return None
# Fees calculated by default in 'sell_coin'
fee_amt = fee_amt_perc / 100 * sell_amt
# If 'FeeCoin' has a value, calculate fees in 'FeeCoin'
if fee_coin and fee_coin is not '-':
fee_amt = fx_exchange(sell_coin.id, fee_coin, fee_amt, self.logger)
fee_coin = get_coin(fee_coin)
else:
fee_coin = sell_coin
# Return calculated trade
self.logger.debug("perform_trade [3]: Trade for '{}[{}/{}]:"
" Sell={} {} / Buy={} {} / Fee={} {}'"
"".format(self.exchange.id, sell_coin.id,
buy_coin.id, sell_amt, sell_coin.id,
buy_amt, buy_coin.id, fee_amt,
fee_coin.id))
return Trade(sell_amt, sell_coin, buy_amt, buy_coin, fee_amt, fee_coin,
fee_literal)
def promotions():
try:
# If 'calc_currency' exists in cookie, use it
currency = request.cookies.get('calc_currency')
if currency:
curr = currency
else:
curr = Params.DEFAULT_CURRENCY
curr = get_coin(curr)
# Get forms
feedback_form = FeedbackForm()
promo_form = PromoForm()
# Get Meta tags
title = get_meta_tags('Promotions', 'Title')
description = get_meta_tags('Promotions', 'Description')
# Get promos
promos = get_promos()
# Actions if Feedback Form was filled
if promo_form.promo_submit.data:
if promo_form.validate():
manage_promo_form(promo_form, 'Promos')
# Actions if Feedback Form was filled
if feedback_form.feedback_submit.data:
if feedback_form.validate():
manage_feedback_form(feedback_form, request.path)
# Catch generic exception just in case anything went wront
except Exception as e:
logger.error("routes: Error procesing 'crypto-promotions'")
error_notifier(type(e).__name__,
traceback.format_exc(),
mail,
logger)
return redirect(url_for('home'))
# Load page
return render_template('promotions.html',
curr=curr,
title=title,
description=description,
feedback_form=feedback_form,
promo_form=promo_form,
promos=promos)
def exchange_fees_by_coin(coin_url_name):
"""Displays the fees for the coin given as as argument.
"""
try:
coin = get_coin_by_urlname(coin_url_name)
# If coin not recognized, redirect
if not coin:
return redirect(url_for('exchange_fees_coin'))
# Get coin fees
coin_fees = get_coin_fees(coin.id)
# Get coin data
coin_data = get_coin_data(coin.paprika_id,
coin_info_file,
people_info_file,
tag_info_file,
logger)
# If 'calc_currency' exists in cookie, use it
currency = request.cookies.get('calc_currency')
if currency:
curr = currency
else:
curr = Params.DEFAULT_CURRENCY
feedback_form = FeedbackForm()
# Get Meta tags
title = get_meta_tags('Exchanges|Fees|Coin|Coin',
'Title',
[coin.long_name, coin.symbol])
description = get_meta_tags('Exchanges|Fees|Coin|Coin',
'Description',
[coin.long_name, coin.symbol])
# Get search coins
if (coin.type == 'Crypto'):
quick_search_coins = Params.QUICK_SEARCH_COINS['Crypto']
else:
quick_search_coins = Params.QUICK_SEARCH_COINS['Fiat']
search_coins = []
search_count = 0
for item in quick_search_coins:
if item != coin.id:
coinA = get_coin(item)
search_coins.append({"coinA": coinA, "coinB": coin})
search_count += 1
# If for items have been gathered, exit loop
if search_count == 4:
break
# Catch generic exception just in case anything went wront
except Exception as e:
logger.error("routes: Error procesing '{}'".format(coin_url_name))
error_notifier(type(e).__name__,
traceback.format_exc(),
mail,
logger)
return redirect(url_for('exchange_fees_coin'))
# Load page
return render_template('exchange_fees_by_coin.html',
coin=coin,
coin_data=coin_data,
curr=curr,
title=title,
description=description,
feedback_form=feedback_form,
coin_fees=coin_fees,
search_coins=search_coins)
def exch_results(url_orig_coin=None, url_dest_coin=None):
"""There are two ways of landing in this page:
- Search form was filled: performs search and returns results
- Direct external link (no form was filled!): in this case,
a page with no results is shown, and then from the page a proper
calculation is triggered. It is done like this to let the user
load the page as soon as possible.
"""
session_id = request.cookies.get('session')
if not session_id:
new_session_id = token_hex(8)
sorted_paths = []
input_form = SearchForm()
# Choose currency: 1) Form 2) Cookie 3) Default
currency = request.cookies.get('calc_currency')
if input_form.currency.data != 'Empty':
curr = input_form.currency.data
elif currency:
curr = currency
input_form.currency.data = curr
else:
curr = Params.DEFAULT_CURRENCY
input_form.currency.data = curr
auto_search = False
feedback_form = FeedbackForm()
exchanges = get_exchanges(['Exchange'])
user_exchanges = [exch.id for exch in exchanges]
path_results = None
open_fbck_modal = False
# Get Meta tags (in case form was not filled)
title = get_meta_tags('Exchanges|Results',
'Title',
[url_orig_coin.upper(), url_dest_coin.upper()])
description = get_meta_tags('Exchanges|Results',
'Description',
[url_orig_coin.upper(), url_dest_coin.upper()])
# 1) ACTIONS IF *SEARCH* FORM WAS FILLED
if input_form.search_submit.data:
if input_form.validate():
curr = input_form.currency.data
orig_loc = get_exch_by_name(input_form.orig_loc.data)
orig_coin = get_coin_by_longname(input_form.orig_coin.data)
# Save 'orig_amt' as Float or integer depending on value
num = float(input_form.orig_amt.data)
if num % 1 == 0:
num = int(num)
orig_amt = num
dest_loc = get_exch_by_name(input_form.dest_loc.data)
dest_coin = get_coin_by_longname(input_form.dest_coin.data)
user_exchanges = input_form.exchanges.data
# Get Meta tags (again, if form was filled)
title = get_meta_tags('Exchanges|Results',
'Title',
[orig_coin.symbol, dest_coin.symbol])
description = get_meta_tags('Exchanges|Results',
'Description',
[orig_coin.long_name,
dest_coin.long_name])
# If user selected all Exchanges or none of them, don't filter
if len(user_exchanges) == len(exchanges):
user_exchanges = []
fee_settings = {"CEP": input_form.cep_promos.data,
"Default": input_form.default_fee.data,
"Binance": input_form.binance_fee.data}
# start_time = datetime.datetime.now()
try:
paths = calc_paths(orig_loc, orig_coin, orig_amt,
dest_loc, dest_coin,
curr, fee_settings, logger)
path_results = len(paths)
# Catch generic exception just in case anything went wront in logic
except Exception as e:
db.session.rollback()
error_notifier(type(e).__name__,
traceback.format_exc(),
mail,
logger)
paths = []
path_results = -1
# If no results were found, send worning email
if path_results == 0:
args_dic = {"orig_amt": orig_amt,
"orig_coin": orig_coin.id,
"orig_loc": orig_loc.id,
"dest_coin": dest_coin.id,
"dest_loc": dest_loc.id,
"currency": curr}
warning_notifier("Search with no results",
args_dic,
mail,
logger)
# Register query
# finish_time = datetime.datetime.now()
# results = len(paths)
# exchs = ""
# for exch in user_exchanges:
# exchs += exch + '|'
# exchs = exchs[:-1]
# try:
# query = QueryRegister(session_id=session_id,
# orig_amt=orig_amt,
# orig_coin=orig_coin.id,
# orig_loc=orig_loc.id,
# dest_coin=dest_coin.id,
# dest_loc=dest_loc.id,
# currency=curr,
# connection_type=connection_type,
# exchanges=exchs,
# results=results,
# start_time=start_time,
# finish_time=finish_time)
# db.session.add(query)
# db.session.commit()
# except Exception as e:
# db.session.rollback()
# error_notifier(type(e).__name__,
# traceback.format_exc(),
# mail,
# logger)
# Select all Exchanges if no partial selection was made
if not user_exchanges:
user_exchanges = [exch.id for exch in exchanges]
# Return capped list of results
sorted_paths = sorted(paths, key=lambda x: x.total_fees)
sorted_paths = sorted_paths[0:Params.MAX_PATHS]
# 2) ACTIONS IF *NO* FORM WAS FILLED (DIRECT LINK!)
else:
orig_coin = get_coin(url_orig_coin.upper())
dest_coin = get_coin(url_dest_coin.upper())
if orig_coin:
input_form.orig_coin.data = orig_coin.long_name
amt = fx_exchange("USD", orig_coin.id, 3000, logger)
input_form.orig_amt.data = str(math.ceil(amt)) + " "
if dest_coin:
input_form.dest_coin.data = dest_coin.long_name
auto_search = True
resp = make_response(render_template('exch_results.html',
form=input_form,
curr=curr,
exchanges=exchanges,
user_exchanges=user_exchanges,
paths=sorted_paths,
path_results=path_results,
auto_search=auto_search,
feedback_form=feedback_form,
title=title,
description=description,
open_feedback_modal=open_fbck_modal,
url_orig_coin=url_orig_coin,
url_dest_coin=url_dest_coin))
# Store session ID & Currency in cookie if there are not already stored
if not session_id:
resp.set_cookie('session', new_session_id)
if currency != curr:
resp.set_cookie('calc_currency', curr)
return resp
def exch_results(url_orig_coin=None, url_dest_coin=None):
"""There are two ways of landing in this page:
- Search form was filled: performs search and returns results
- Direct external link (no form was filled!): in this case,
a page with no results is shown, and then from the page a proper
calculation is triggered. It is done like this to let the user
load the page as soon as possible.
"""
try:
session_id = request.cookies.get('session')
if not session_id:
new_session_id = token_hex(8)
sorted_paths = []
input_form = SearchForm()
# Choose currency: 1) Form 2) Cookie 3) Default
currency = request.cookies.get('calc_currency')
if input_form.currency.data != 'Empty':
curr = input_form.currency.data
elif currency:
curr = currency
input_form.currency.data = curr
else:
curr = Params.DEFAULT_CURRENCY
input_form.currency.data = curr
curr = get_coin(curr)
if not curr:
curr = get_coin('usd-us-dollars')
auto_search = False
feedback_form = FeedbackForm()
exchanges = get_exchanges(['Exchange'], status='Active')
user_exchanges = [exch.id for exch in exchanges]
path_results = None
amt_warning = None
# Get Meta tags (in case form was not filled)
title = get_meta_tags('Exchanges|Results',
'Title',
[url_orig_coin.upper(), url_dest_coin.upper()])
description = get_meta_tags('Exchanges|Results',
'Description',
[url_orig_coin.upper(),
url_dest_coin.upper()])
# 1) ACTIONS IF *SEARCH* FORM WAS FILLED
if input_form.search_submit.data:
if input_form.validate():
curr = input_form.currency.data
curr = get_coin(curr)
orig_loc = get_exch_by_name(input_form.orig_loc.data)
orig_coin = get_coin_by_longname(input_form.orig_coin.data)
# Save 'orig_amt' as Float or integer depending on value
num = float(input_form.orig_amt.data)
if num % 1 == 0:
num = int(num)
orig_amt = num
dest_loc = get_exch_by_name(input_form.dest_loc.data)
dest_coin = get_coin_by_longname(input_form.dest_coin.data)
user_exchanges = input_form.exchanges.data
# Get Meta tags (again, if form was filled)
title = get_meta_tags('Exchanges|Results',
'Title',
[orig_coin.symbol, dest_coin.symbol])
description = get_meta_tags('Exchanges|Results',
'Description',
[orig_coin.long_name,
dest_coin.long_name])
# If user selected all Exchanges or none of them, don't filter
if len(user_exchanges) == len(exchanges):
user_exchanges = []
fee_settings = {"CEP": input_form.cep_promos.data,
"Default": input_form.default_fee.data,
"Binance": input_form.binance_fee.data}
# start_time = datetime.datetime.now()
try:
paths = calc_paths(orig_loc, orig_coin, orig_amt,
dest_loc, dest_coin,
curr, fee_settings, logger)
path_results = len(paths)
# Catch generic exception if anything went wrong in logic
except Exception as e:
db.session.rollback()
error_notifier(type(e).__name__,
traceback.format_exc(),
mail,
logger)
paths = []
path_results = -1
# If no results were found, check "orign_amt" to try again
if path_results == 0:
amount_usd = fx_exchange(orig_coin.id,
'usd-us-dollars',
orig_amt,
logger)
if amount_usd and amount_usd < Params.RECALC_AMOUNT:
orig_amt = round_number(orig_amt * Params.RECALC_AMOUNT
/ amount_usd)
orig_amt = round_big_number(orig_amt)
input_form.orig_amt.data = orig_amt
try:
paths = calc_paths(orig_loc, orig_coin, orig_amt,
dest_loc, dest_coin,
curr, fee_settings, logger)
path_results = len(paths)
amt_warning = True
# Catch generic exception if anything went wrong
except Exception as e:
db.session.rollback()
error_notifier(type(e).__name__,
traceback.format_exc(),
mail,
logger)
paths = []
path_results = -1
# If no results were found, send worning email
if path_results == 0:
args_dic = {"orig_amt": orig_amt,
"orig_coin": orig_coin.id,
"orig_loc": orig_loc.id,
"dest_coin": dest_coin.id,
"dest_loc": dest_loc.id,
"currency": curr.id}
warning_notifier("Search with no results",
args_dic,
mail,
logger)
# Select all Exchanges if no partial selection was made
if not user_exchanges:
user_exchanges = [exch.id for exch in exchanges]
# Return capped list of results
sorted_paths = sorted(paths, key=lambda x: x.total_fees)
sorted_paths = sorted_paths[0:Params.MAX_PATHS]
# 2) ACTIONS IF *NO* FORM WAS FILLED (DIRECT LINK!)
else:
orig_coin = get_coin_by_symbol(url_orig_coin.upper())
dest_coin = get_coin_by_symbol(url_dest_coin.upper())
# If 'orig_coin' or 'dest_coin' not found, try in mappings table
if not orig_coin:
new_symbol = get_mapping('Coin',
'symbol',
url_orig_coin.upper())
if new_symbol:
orig_coin = get_coin_by_symbol(new_symbol)
if not dest_coin:
new_symbol = get_mapping('Coin',
'symbol',
url_dest_coin.upper())
if new_symbol:
dest_coin = get_coin_by_symbol(new_symbol)
# Procced with function
if orig_coin:
input_form.orig_coin.data = orig_coin.long_name
amt = fx_exchange('usd-us-dollars', orig_coin.id, 3000, logger)
if amt:
amt = round_big_number(amt)
input_form.orig_amt.data = str(math.ceil(amt)) + " "
if dest_coin:
input_form.dest_coin.data = dest_coin.long_name
auto_search = True
# Actions if Feedback Form was filled
if feedback_form.feedback_submit.data:
if feedback_form.validate():
manage_feedback_form(feedback_form, request.path)
# Catch generic exception just in case anything went wront in logic
except Exception as e:
db.session.rollback()
logger.error("Routes: Non-handled exception at '{}'"
.format(request.url))
error_notifier(type(e).__name__,
traceback.format_exc(),
mail,
logger)
return redirect(url_for('exchanges'))
resp = make_response(render_template('exch_results.html',
form=input_form,
curr=curr,
exchanges=exchanges,
user_exchanges=user_exchanges,
paths=sorted_paths,
amt_warning=amt_warning,
path_results=path_results,
auto_search=auto_search,
feedback_form=feedback_form,
title=title,
description=description,
url_orig_coin=url_orig_coin,
url_dest_coin=url_dest_coin))
# Store session ID & Currency in cookie if there are not already stored
if not session_id:
resp.set_cookie('session', new_session_id)
if currency != curr.id:
resp.set_cookie('calc_currency', curr.id)
return resp
def calc_paths(orig_loc, orig_coin, orig_amt, dest_loc, dest_coin, currency,
fee_settings, logger):
# Paths container
path_list = []
""" ***********************************************************************
***************************************************************************
1. DIRECT EXCHANGE(NO HOPS)
***************************************************************************
*********************************************************************** """
logger.info("\n\nSTARTING CALCULATION FOR: \norig_amt = {}\n"
"orig_coin = {}\norig_loc = {}\ndest_coin = {}\ndest_loc = {}"
"\ncurrency = {}\nfee_settings = {}".format(
orig_amt, orig_coin, orig_loc, dest_coin, dest_loc,
currency, fee_settings))
logger.info("Main: CALCULATING '1. DIRECT EXCHANGE(NO HOPS)'")
# Get exchanges with direct pair exchange
direct_pair_exch = get_exch_by_pair(orig_coin.id, dest_coin.id, logger)
# Get exchanges that allow deposits of 'orig_coin'
exchs_allow_deposits = get_exch_by_coin(orig_coin.id)
# Common parts of 'Path'
path_type = 0
origin = Location("Origin", orig_loc, orig_amt, orig_coin, logger)
# Loop for each exchange to calculate Path fees
for exch in direct_pair_exch:
# First, check if the exchange allows deposits
if exch not in exchs_allow_deposits:
continue
# If allows deposits, perform trade
trade_1_sell_amt = orig_amt
if origin.withdraw_fee:
trade_1_sell_amt -= origin.withdraw_fee
# Calc deposit fee 1 and substract it from sell amount
deposit_fee_1 = [None, None]
if exch != origin.exchange.id:
deposit_fee_1 = calc_fee('Deposit', exch, orig_coin.id,
trade_1_sell_amt, logger)
if deposit_fee_1 and deposit_fee_1[0] is not None:
trade_1_sell_amt -= deposit_fee_1[0]
# Perform Trade 1
exchange_1 = ExchangeManager(get_exchange(exch), fee_settings, logger)
trade_1 = exchange_1.perform_trade(trade_1_sell_amt, orig_coin,
dest_coin)
# If 'perform_trade()' did not get results, skip path. Else continue
if not trade_1:
logger.warning("Main: Trade could not be performed for {}/{}[{}]. "
"Path skipped.".format(orig_coin.id, dest_coin.id,
exch))
continue
# Calc destination amount
dest_amt = trade_1.buy_amt
# Calc Withdraw fee and modify destination amount
withdraw_fee_1 = []
if exch != dest_loc.id:
withdraw_fee_1 = calc_fee('Withdrawal', exch, trade_1.buy_coin.id,
trade_1.buy_amt, logger)
if withdraw_fee_1 and withdraw_fee_1[0] is not None:
dest_amt -= withdraw_fee_1[0]
if dest_amt < 0:
logger.warning("Main: Destination amount "
"lower than 0 for {} [{}]. "
" Path skipped.".format(
exch, trade_1.buy_coin.id))
continue
else:
logger.warning("Main: Withdraw Fee not found for {} [{}]. "
"Path skipped.".format(exch,
trade_1.buy_coin.id))
continue
# Generate Hop & destination location to finish 'Path'
hop_1 = Hop(get_exchange(exch), trade_1, deposit_fee_1, withdraw_fee_1)
destination = Location("Destination", dest_loc, dest_amt, dest_coin,
logger)
if destination.exchange.id == exch:
destination.remove_deposit_fees()
# Generate 'Path' and add to 'path_list'
path = Path(path_type, origin, hop_1, None, destination, currency,
logger)
path_list.append(path)
logger.debug(
('Path Found: {}->{}({})').format(trade_1.sell_coin.id,
trade_1.buy_coin.id, exch))
logger.info("End of '1. DIRECT EXCHANGE(NO HOPS)'")
""" ***********************************************************************
***************************************************************************
2. INDIRECT EXCHANGE(ONE HOP)
***************************************************************************
*********************************************************************** """
logger.info("Main: CALCULATING '2. INDIRECT EXCHANGE(ONE HOP)'")
# Get exchanges with indirect pair exchange
orig_coin_exchanges = get_exch_by_coin(orig_coin.id)
dest_coin_exchanges = get_exch_by_coin(dest_coin.id)
# Filter exchanges already used - Filter 'orig_coin_exchanges'
filtered_exch = set()
for exch in orig_coin_exchanges:
if exch not in direct_pair_exch:
filtered_exch.add(exch)
orig_coin_exchanges = filtered_exch
logger.debug(
"Main: 'orig_coin_exchanges' filtered: {}".format(orig_coin_exchanges))
# Filter exchanges already used - Filter 'dest_coin_exchanges'
filtered_exch = set()
for exch in dest_coin_exchanges:
if exch not in direct_pair_exch:
filtered_exch.add(exch)
dest_coin_exchanges = filtered_exch
logger.debug(
"Main: 'dest_coin_exchanges' filtered: {}".format(dest_coin_exchanges))
# Select exchanges that trade both coins, but not with a direct trade
indirect_pair_exch = [
exch for exch in orig_coin_exchanges if exch in dest_coin_exchanges
]
logger.debug("Exchanges with both pairs (but not direct trade) [{}]: {}"
"".format(len(indirect_pair_exch), indirect_pair_exch))
# Common parts of 'Path'
path_type = 1
origin = Location("Origin", orig_loc, orig_amt, orig_coin, logger)
# Loop for each exchange with both pairs
for exch in indirect_pair_exch:
# Get CoinZ that trades against both pairs
exchange = ExchangeManager(get_exchange(exch), fee_settings, logger)
coinZ = exchange.get_best_coinZ(orig_coin.id, dest_coin.id)
if not coinZ:
logger.warning("Main: No coinZ found in exchange '{}' to convert"
"'{}' to '{}' Path skipped.".format(
exch, orig_coin.id, dest_coin.id))
continue
# CALCULATE OUTPUTS FOR 'Hop 1'
trade_1_sell_amt = orig_amt
if origin.withdraw_fee:
trade_1_sell_amt -= origin.withdraw_fee
# Calc deposit fee 1 and substract it from sell amount
deposit_fee_1 = [None, None]
if exch != origin.exchange.id:
deposit_fee_1 = calc_fee('Deposit', exch, orig_coin.id,
trade_1_sell_amt, logger)
if deposit_fee_1 and deposit_fee_1[0] is not None:
trade_1_sell_amt -= deposit_fee_1[0]
# Perform Trade 1
trade_1 = exchange.perform_trade(trade_1_sell_amt, orig_coin,
coinZ.coin)
# If 'perform_trade()' did not get results, skip path. Else continue
if not trade_1:
logger.warning("Main: Trade could not be performed for {}/{}[{}]. "
"Path skipped.".format(orig_coin.id, coinZ.coin.id,
exch))
continue
# Generate output object for 'Hop 1'
hop_1 = Hop(exchange.exchange, trade_1, deposit_fee_1, None)
# CALCULATE OUTPUTS FOR 'Hop 2'
trade_2 = exchange.perform_trade(trade_1.buy_amt, trade_1.buy_coin,
dest_coin)
# If 'perform_trade()' did not get results, skip path. Else continue
if not trade_2:
logger.warning("Main: Trade could not be performed for {}/{}[{}]. "
"Path skipped.".format(trade_1.buy_coin.id,
dest_coin.id, exch))
continue
# Calc destination amount
dest_amt = trade_2.buy_amt
# Calc Withdraw fee and modify destination amount
withdraw_fee_2 = []
if exch != dest_loc.id:
withdraw_fee_2 = calc_fee('Withdrawal', exch, trade_2.buy_coin.id,
trade_2.buy_amt, logger)
if withdraw_fee_2 and withdraw_fee_2[0] is not None:
dest_amt -= withdraw_fee_2[0]
else:
logger.warning("Main: Withdraw Fee not found for {} [{}]. "
"Path skipped.".format(exch,
trade_2.buy_coin.id))
continue
# Generate Hop & destination location to finish 'Path'
deposit_fee_2 = [None, None]
hop_2 = Hop(exchange.exchange, trade_2, deposit_fee_2, withdraw_fee_2)
destination = Location("Destination", dest_loc, dest_amt, dest_coin,
logger)
if destination.exchange.id == exch:
destination.remove_deposit_fees()
# Generate 'Path' and add to 'path_list'
path = Path(path_type, origin, hop_1, hop_2, destination, currency,
logger)
path_list.append(path)
logger.debug('Path Found: {}->{}({})'
' --> {}->{}({})'.format(trade_1.sell_coin.id,
trade_1.buy_coin.id, exch,
trade_2.sell_coin.id,
trade_2.buy_coin.id, exch))
logger.info("End of '2. INDIRECT EXCHANGE(ONE HOP)'")
""" ***********************************************************************
***************************************************************************
3. INDIRECT EXCHANGE(TWO HOPS)
***************************************************************************
*********************************************************************** """
logger.info("Main: CALCULATING '3. INDIRECT EXCHANGE(TWO HOPS)'")
# Get all the coins that trade against 'orig_coin' for each exchange
orig_coin_exchanges_coinZs = []
for exch in orig_coin_exchanges:
exchange = ExchangeManager(get_exchange(exch), fee_settings, logger)
coinZs_A = exchange.get_all_cryptoZs(orig_coin.id)
exchange.coinZs = coinZs_A
orig_coin_exchanges_coinZs.append(exchange)
logger.debug("Pairs against [] {}: {}".format(exchange.exchange.id,
orig_coin.id,
exchange.coinZs))
# Get all the coins that trade against 'dest_coin' for each exchange
dest_coin_exchanges_coinZs = []
for exch in dest_coin_exchanges:
exchange = ExchangeManager(get_exchange(exch), fee_settings, logger)
coinZs_B = exchange.get_all_cryptoZs(dest_coin.id)
exchange.coinZs = coinZs_B
dest_coin_exchanges_coinZs.append(exchange)
logger.debug("Pairs against [] {}: {}".format(exchange.exchange.id,
orig_coin.id,
exchange.coinZs))
# Common parts of 'Path'
path_type = 2
origin = Location("Origin", orig_loc, orig_amt, orig_coin, logger)
# Loop through all the exchanges and coins
for exch_A in orig_coin_exchanges_coinZs:
for coinZ_A in exch_A.coinZs:
for exch_B in dest_coin_exchanges_coinZs:
if exch_A.exchange.id == exch_B.exchange.id:
continue
for coinZ_B in exch_B.coinZs:
# If coinZ_A==coinZ_B, calculate Exchange Path
if coinZ_A[0] == coinZ_B[0]:
# CALCULATE OUTPUTS FOR 'Hop 1'
trade_1_sell_amt = orig_amt
if origin.withdraw_fee:
trade_1_sell_amt -= origin.withdraw_fee
# Calc deposit fee 1 and substract it from sell amount
deposit_fee_1 = [None, None]
if exch_A.exchange.id != origin.exchange.id:
deposit_fee_1 = calc_fee('Deposit',
exch_A.exchange.id,
orig_coin.id,
trade_1_sell_amt, logger)
if deposit_fee_1 and deposit_fee_1[0] is not None:
trade_1_sell_amt -= deposit_fee_1[0]
# Perform Trade 1
trade_1 = exch_A.perform_trade(trade_1_sell_amt,
orig_coin,
get_coin(coinZ_A[0]))
# If 'perform_trade()' did not get results, skip path
if not trade_1:
logger.warning(
"Main: Trade could not be performed"
" for {}/{}[{}]. Path skipped.".format(
orig_coin.id, coinZ_A[0],
exch_A.exchange.id))
continue
# Calc destination amount
in_amt_2 = trade_1.buy_amt
# Calc Withdraw fee and modify destination amount
withdraw_fee_1 = calc_fee('Withdrawal',
exch_A.exchange.id,
trade_1.buy_coin.id,
trade_1.buy_amt, logger)
if withdraw_fee_1 and withdraw_fee_1[0] is not None:
in_amt_2 -= withdraw_fee_1[0]
else:
logger.warning("Main: Withdraw Fee not found for"
" {} [{}]. Path skipped.".format(
exch_A.exchange.id,
trade_1.buy_coin.id))
continue
# Generate output object for 'Hop 1'
hop_1 = Hop(exch_A.exchange, trade_1, deposit_fee_1,
withdraw_fee_1)
# CALCULATE OUTPUTS FOR 'Hop 2'
# Calc deposit fee 2 and substract it from sell amount
deposit_fee_2 = calc_fee('Deposit', exch_B.exchange.id,
trade_1.buy_coin.id, in_amt_2,
logger)
if deposit_fee_2 and deposit_fee_2[0] is not None:
in_amt_2 -= deposit_fee_2[0]
# Perform Trade 2
trade_2 = exch_B.perform_trade(in_amt_2,
trade_1.buy_coin,
dest_coin)
# If 'perform_trade()' did not get results, skip path
if not trade_2:
logger.warning(
"Main: Trade could not be performed"
" for {}/{}[{}]. Path skipped.".format(
trade_1.buy_coin.id, dest_coin.id,
exch_B.exchange.id))
continue
# Calc destination amount
dest_amt = trade_2.buy_amt
# Calc Withdraw fee and modify destination amount
withdraw_fee_2 = []
if exch_B.exchange.id != dest_loc.id:
withdraw_fee_2 = calc_fee('Withdrawal',
exch_B.exchange.id,
trade_2.buy_coin.id,
trade_2.buy_amt, logger)
if (withdraw_fee_2
and withdraw_fee_2[0] is not None):
dest_amt -= withdraw_fee_2[0]
if dest_amt < 0:
logger.warning("Main: Destination amount "
"lower than 0 for {} [{}]."
" Path skipped.".format(
exch_B.exchange.id,
trade_2.buy_coin.id))
continue
else:
logger.warning(
"Main: Withdraw Fee not found "
"for {} [{}]. Path skipped.".format(
exch_B.exchange.id,
trade_2.buy_coin.id))
continue
# Generate Hop & destination location to finish 'Path'
hop_2 = Hop(exch_B.exchange, trade_2, deposit_fee_2,
withdraw_fee_2)
destination = Location("Destination", dest_loc,
dest_amt, dest_coin, logger)
if destination.exchange.id == exch_B.exchange.id:
destination.remove_deposit_fees()
# Generate 'Path' and add to 'path_list'
path = Path(path_type, origin, hop_1, hop_2,
destination, currency, logger)
path_list.append(path)
logger.debug(
'Path Found: {}->{}({}) --> {}->{}({})'.format(
trade_1.sell_coin.id, trade_1.buy_coin.id,
exch_A.exchange.id, trade_2.sell_coin.id,
trade_2.buy_coin.id, exch_B.exchange.id))
logger.info("End of '3. INDIRECT EXCHANGE(TWO HOPS)'")
# generate_paths_file(path_list, currency, logger)
logger.info("Path calculation finished. '{}' results".format(
len(path_list)))
return path_list
