def get_quote(user, params) -> QuoteSerializer:
input_serializer = QuoteInputSerializer(
data={
'amount': params.get('amount'),
'currency': params.get('currency'),
'fiat_currency': params.get('fiat_currency',
FIAT_CURRENCY.USD),
'pool_check': params.get('check', False),
'user_check': params.get('user_check', False),
'direction': params.get('direction', DIRECTION.buy),
})
if input_serializer.is_valid(raise_exception=True):
safe_data = input_serializer.validated_data
direction = safe_data['direction']
currency = safe_data['currency']
amount = safe_data['amount']
price = QuoteManagement.get_price(direction, safe_data)
raw_fiat_amount = amount * price
fiat_local_currency = safe_data['fiat_currency']
if safe_data['user_check']:
# request.user
# User logged in
if user and user.is_authenticated:
if fiat_local_currency != user.exchange_user.currency:
raw_fiat_local_amount = RateManagement.convert_currency(
raw_fiat_amount, fiat_local_currency,
user.exchange_user.currency)
else:
raw_fiat_local_amount = RateManagement.convert_to_local_currency(
raw_fiat_amount, fiat_local_currency)
QuoteManagement.check_user_limit(
user, raw_fiat_local_amount,
user.exchange_user.currency)
else:
raise NotAuthenticated
if safe_data['pool_check']:
QuoteManagement.check_pool(direction, amount, currency)
if direction == DIRECTION.buy:
fiat_amount, fiat_amount_fee = markup_fee(
raw_fiat_amount, FEE_COIN_ORDER_BANK)
else:
fiat_amount, fiat_amount_fee = markup_fee(
raw_fiat_amount, FEE_COIN_SELLING_ORDER_BANK)
fiat_local_amount = RateManagement.convert_to_local_currency(
fiat_amount, fiat_local_currency)
fee_local = RateManagement.convert_to_local_currency(
fiat_amount_fee, fiat_local_currency)
if direction == DIRECTION.buy:
fiat_amount_cod, fiat_amount_fee_cod = markup_fee(
raw_fiat_amount, FEE_COIN_ORDER_COD)
fiat_local_amount_cod = RateManagement.convert_to_local_currency(
fiat_amount_cod, fiat_local_currency)
fee_local_cod = RateManagement.convert_to_local_currency(
fiat_amount_fee_cod, fiat_local_currency)
else:
fiat_amount_cod, fiat_amount_fee_cod = markup_fee(
raw_fiat_amount, FEE_COIN_SELLING_ORDER_COD)
fiat_local_amount_cod = RateManagement.convert_to_local_currency(
fiat_amount_cod, fiat_local_currency)
fee_local_cod = RateManagement.convert_to_local_currency(
fiat_amount_fee_cod, fiat_local_currency)
serializer = QuoteSerializer(
data={
'fiat_amount': round_currency(fiat_amount),
'fiat_currency': FIAT_CURRENCY.USD,
'fiat_local_amount': round_currency(fiat_local_amount),
'fiat_local_currency': fiat_local_currency,
'fiat_amount_cod': round_currency(fiat_amount_cod),
'fiat_local_amount_cod': round_currency(
fiat_local_amount_cod),
'fee': round_currency(fiat_amount_fee),
'fee_cod': round_currency(fiat_amount_fee_cod),
'fee_local': round_currency(fee_local),
'fee_local_cod': round_currency(fee_local_cod),
'raw_fiat_amount': round_currency(raw_fiat_amount),
'price': round_currency(price),
'amount': round_crypto_currency(amount),
'currency': safe_data['currency'],
'direction': safe_data['direction']
})
serializer.is_valid(raise_exception=True)
return serializer
def get_quote_reverse(user, params) -> QuoteReverseSerializer:
input_serializer = QuoteReverseInputSerializer(
data={
'fiat_amount': params.get('fiat_amount'),
'currency': params.get('currency'),
'fiat_currency': params.get('fiat_currency',
FIAT_CURRENCY.USD),
'pool_check': params.get('check', False),
'user_check': params.get('user_check', False),
'direction': params.get('direction', DIRECTION.buy),
'order_type': params.get('type', ORDER_TYPE.bank)
})
order_type = input_serializer.initial_data['order_type']
if order_type not in ORDER_TYPE:
raise ValidationError
if input_serializer.is_valid(raise_exception=True):
safe_data = input_serializer.validated_data
direction = safe_data['direction']
currency = safe_data['currency']
fiat_local_amount = safe_data['fiat_amount']
fiat_local_currency = safe_data['fiat_currency']
fiat_amount = RateManagement.convert_from_local_currency(
fiat_local_amount, fiat_local_currency)
if direction == DIRECTION.buy:
if order_type == ORDER_TYPE.bank:
raw_fiat_amount, fiat_amount_fee = remove_markup_fee(
fiat_amount, FEE_COIN_ORDER_BANK)
else:
raw_fiat_amount, fiat_amount_fee = remove_markup_fee(
fiat_amount, FEE_COIN_ORDER_COD)
else:
if order_type == ORDER_TYPE.bank:
raw_fiat_amount, fiat_amount_fee = remove_markup_fee(
fiat_amount, FEE_COIN_SELLING_ORDER_BANK)
else:
raw_fiat_amount, fiat_amount_fee = remove_markup_fee(
fiat_amount, FEE_COIN_SELLING_ORDER_COD)
price = QuoteManagement.get_price(direction, safe_data)
amount = raw_fiat_amount / price
if safe_data['user_check']:
# request.user
# User logged in
if user and user.is_authenticated:
if fiat_local_currency != user.exchange_user.currency:
raw_fiat_local_amount = RateManagement.convert_currency(
raw_fiat_amount, fiat_local_currency,
user.exchange_user.currency)
else:
raw_fiat_local_amount = RateManagement.convert_to_local_currency(
raw_fiat_amount, fiat_local_currency)
QuoteManagement.check_user_limit(
user, raw_fiat_local_amount,
user.exchange_user.currency)
else:
raise NotAuthenticated
if safe_data['pool_check']:
QuoteManagement.check_pool(direction, amount, currency)
fiat_local_amount = RateManagement.convert_to_local_currency(
fiat_amount, fiat_local_currency)
serializer = QuoteReverseSerializer(
data={
'fiat_amount': round_currency(fiat_amount),
'fiat_currency': FIAT_CURRENCY.USD,
'fiat_local_amount': round_currency(fiat_local_amount),
'fiat_local_currency': fiat_local_currency,
'raw_fiat_amount': round_currency(raw_fiat_amount),
'price': round_currency(price),
'amount': round_crypto_currency(amount),
'currency': safe_data['currency'],
'direction': safe_data['direction']
})
serializer.is_valid(raise_exception=True)
return serializer