forex-python/forex_python/bitcoin.py at fpy_param · MicroPyramid/forex-python · GitHub

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from decimal import Decimal

import simplejson as json

import requests

from .converter import RatesNotAvailableError, DecimalFloatMismatchError

class BtcConverter(object):

"""

Get bit coin rates and convertion

"""

def __init__(self, force_decimal=False):

self._force_decimal = force_decimal

def _decode_rates(self, response, use_decimal=False):

if self._force_decimal or use_decimal:

decoded_data = json.loads(response.text, use_decimal=True)

else:

decoded_data = response.json()

return decoded_data

def get_latest_price(self, currency):

"""

Get Lates price of one bitcoin to valid Currency 1BTC => X USD

"""

url = 'https://api.coindesk.com/v1/bpi/currentprice/{}.json'.format(currency)

response = requests.get(url)

if response.status_code == 200:

data = response.json()

price = data.get('bpi').get(currency, {}).get('rate_float', None)

if self._force_decimal:

return Decimal(price)

return price

return None

def get_previous_price(self, currency, date_obj):

"""

Get Price for one bit coin on given date

"""

start = date_obj.strftime('%Y-%m-%d')

end = date_obj.strftime('%Y-%m-%d')

url = (

'https://api.coindesk.com/v1/bpi/historical/close.json'

'?start={}&end={}&currency={}'.format(

start, end, currency

)

response = requests.get(url)

if response.status_code == 200:

data = response.json()

price = data.get('bpi', {}).get(start, None)

if self._force_decimal:

return Decimal(price)

return price

raise RatesNotAvailableError("BitCoin Rates Source Not Ready For Given date")

def get_previous_price_list(self, currency, start_date, end_date):

"""

Get List of prices between two dates

"""

start = start_date.strftime('%Y-%m-%d')

end = end_date.strftime('%Y-%m-%d')

url = (

'https://api.coindesk.com/v1/bpi/historical/close.json'

'?start={}&end={}&currency={}'.format(

start, end, currency

)

response = requests.get(url)

if response.status_code == 200:

data = self._decode_rates(response)

price_dict = data.get('bpi', {})

return price_dict

return {}

def convert_to_btc(self, amount, currency):

"""

Convert X amount to Bit Coins

"""

if isinstance(amount, Decimal):

use_decimal = True

else:

use_decimal = self._force_decimal

url = 'https://api.coindesk.com/v1/bpi/currentprice/{}.json'.format(currency)

response = requests.get(url)

if response.status_code == 200:

data = response.json()

price = data.get('bpi').get(currency, {}).get('rate_float', None)

if price:

if use_decimal:

price = Decimal(price)

try:

converted_btc = amount/price

return converted_btc

except TypeError:

raise DecimalFloatMismatchError("convert_to_btc requires amount parameter is of type Decimal when force_decimal=True")

raise RatesNotAvailableError("BitCoin Rates Source Not Ready For Given date")

def convert_btc_to_cur(self, coins, currency):

"""

Convert X bit coins to valid currency amount

"""

if isinstance(coins, Decimal):

use_decimal = True

else:

use_decimal = self._force_decimal

url = 'https://api.coindesk.com/v1/bpi/currentprice/{}.json'.format(currency)

response = requests.get(url)

if response.status_code == 200:

data = response.json()

price = data.get('bpi').get(currency, {}).get('rate_float', None)

if price:

if use_decimal:

price = Decimal(price)

try:

converted_amount = coins * price

return converted_amount

except TypeError:

raise DecimalFloatMismatchError("convert_btc_to_cur requires coins parameter is of type Decimal when force_decimal=True")

raise RatesNotAvailableError("BitCoin Rates Source Not Ready For Given date")

def convert_to_btc_on(self, amount, currency, date_obj):

"""

Convert X amount to BTC based on given date rate

"""

if isinstance(amount, Decimal):

use_decimal = True

else:

use_decimal = self._force_decimal

start = date_obj.strftime('%Y-%m-%d')

end = date_obj.strftime('%Y-%m-%d')

url = (

'https://api.coindesk.com/v1/bpi/historical/close.json'

'?start={}&end={}&currency={}'.format(

start, end, currency

)

response = requests.get(url)

if response.status_code == 200:

data = response.json()

price = data.get('bpi', {}).get(start, None)

if price:

if use_decimal:

price = Decimal(price)

try:

converted_btc = amount/price

return converted_btc

except TypeError:

raise DecimalFloatMismatchError("convert_to_btc_on requires amount parameter is of type Decimal when force_decimal=True")

raise RatesNotAvailableError("BitCoin Rates Source Not Ready For Given Date")

def convert_btc_to_cur_on(self, coins, currency, date_obj):

"""

Convert X BTC to valid currency amount based on given date

"""

if isinstance(coins, Decimal):

use_decimal = True

else:

use_decimal = self._force_decimal

start = date_obj.strftime('%Y-%m-%d')

end = date_obj.strftime('%Y-%m-%d')

url = (

'https://api.coindesk.com/v1/bpi/historical/close.json'

'?start={}&end={}&currency={}'.format(

start, end, currency

)

response = requests.get(url)

if response.status_code == 200:

data = response.json()

price = data.get('bpi', {}).get(start, None)

if price:

if use_decimal:

price = Decimal(price)

try:

converted_btc = coins*price

return converted_btc

except TypeError:

raise DecimalFloatMismatchError("convert_btc_to_cur_on requires amount parameter is of type Decimal when force_decimal=True")

raise RatesNotAvailableError("BitCoin Rates Source Not Ready For Given Date")

def get_symbol(self):

"""

Here is Unicode symbol for bitcoin

"""

return "\u0E3F"

_Btc_Converter = BtcConverter()

get_btc_symbol = _Btc_Converter.get_symbol

convert_btc_to_cur_on = _Btc_Converter.convert_btc_to_cur_on

convert_to_btc_on = _Btc_Converter.convert_to_btc_on

convert_btc_to_cur = _Btc_Converter.convert_btc_to_cur

convert_to_btc = _Btc_Converter.convert_to_btc

get_latest_price = _Btc_Converter.get_latest_price

get_previous_price = _Btc_Converter.get_previous_price

get_previous_price_list = _Btc_Converter.get_previous_price_list

forex-python/forex_python/bitcoin.py at fpy_param · MicroPyramid/forex-python · GitHub

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