From ecba11139e357567c46f7ba2a0cf8dbd98266fe8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Isma=C3=ABl=20Bouya?= <ismael.bouya@normalesup.org>
Date: Fri, 26 Jan 2018 00:10:03 +0100
Subject: Add first steps for margin trading

---
 market.py | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

(limited to 'market.py')

diff --git a/market.py b/market.py
index 63eff5a..1601e2d 100644
--- a/market.py
+++ b/market.py
@@ -25,6 +25,19 @@ def poloniex_fetch_balance(self, params={}):
     return self.parse_balance(result)
 ccxt.poloniex.fetch_balance = poloniex_fetch_balance
 
+def poloniex_fetch_balance_per_type(self):
+    balances = self.privatePostReturnAvailableAccountBalances()
+    result = {'info': balances}
+    for key, balance in balances.items():
+        result[key] = {}
+        for currency, amount in balance.items():
+            if currency not in result:
+                result[currency] = {}
+            result[currency][key] = decimal.Decimal(amount)
+            result[key][currency] = decimal.Decimal(amount)
+    return result
+ccxt.poloniex.fetch_balance_per_type = poloniex_fetch_balance_per_type
+
 def poloniex_parse_ticker(self, ticker, market=None):
     timestamp = self.milliseconds()
     symbol = None
@@ -51,7 +64,47 @@ def poloniex_parse_ticker(self, ticker, market=None):
         'info': ticker,
     }
 ccxt.poloniex.parse_ticker = poloniex_parse_ticker
+
+def poloniex_create_margin_order(self, symbol, type, side, amount, price=None, lending_rate=None, params={}):
+    if type == 'market':
+        raise ccxt.ExchangeError(self.id + ' allows limit orders only')
+    self.load_markets()
+    method = 'privatePostMargin' + self.capitalize(side)
+    market = self.market(symbol)
+    price = float(price)
+    amount = float(amount)
+    if lending_rate is not None:
+        params = self.extend({"lendingRate": lending_rate}, params)
+    response = getattr(self, method)(self.extend({
+        'currencyPair': market['id'],
+        'rate': self.price_to_precision(symbol, price),
+        'amount': self.amount_to_precision(symbol, amount),
+    }, params))
+    timestamp = self.milliseconds()
+    order = self.parse_order(self.extend({
+        'timestamp': timestamp,
+        'status': 'open',
+        'type': type,
+        'side': side,
+        'price': price,
+        'amount': amount,
+    }, response), market)
+    id = order['id']
+    self.orders[id] = order
+    return self.extend({'info': response}, order)
+
+def poloniex_create_order(self, symbol, type, side, amount, price=None, account="exchange", lending_rate=None, params={}):
+    if account == "exchange":
+        return self.create_exchange_order(symbol, type, side, amount, price=price, params=params)
+    elif account == "margin":
+        return self.create_margin_order(symbol, type, side, amount, price=price, lending_rate=lending_rate, params=params)
+    else:
+        raise NotImplementedError
+ccxt.poloniex.create_exchange_order = ccxt.poloniex.create_order
+ccxt.poloniex.create_order = poloniex_create_order
+
 market = ccxt.poloniex({
     "apiKey": "XXXXXXXX-XXXXXXXX-XXXXXXXX-XXXXXXXX",
     "secret": "1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
     })
+
-- 
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