From b562239ec8f05328f1ef8e935b5146b15d3e0d6c Mon Sep 17 00:00:00 2001
From: Samuel Husso <shusso@iki.fi>
Date: Wed, 31 Jan 2018 17:29:07 +0200
Subject: [PATCH] ccxt has pairs in BASE_CURRENCY / QUOTE_CURRENCY format,
 remove bittrex references

---
 freqtrade/exchange/__init__.py    | 23 +++++++++++++----------
 freqtrade/misc.py                 |  4 ++--
 freqtrade/optimize/backtesting.py |  1 -
 freqtrade/optimize/hyperopt.py    |  1 -
 4 files changed, 15 insertions(+), 14 deletions(-)

diff --git a/freqtrade/exchange/__init__.py b/freqtrade/exchange/__init__.py
index 5839ad701..94ce835d5 100644
--- a/freqtrade/exchange/__init__.py
+++ b/freqtrade/exchange/__init__.py
@@ -23,13 +23,6 @@ _CONF: dict = {}
 _DRY_RUN_OPEN_ORDERS: Dict[str, Any] = {}
 
 
-class Exchanges(enum.Enum):
-    """
-    Maps supported exchange names to correspondent classes.
-    """
-    BITTREX = Bittrex
-
-
 def init(config: dict) -> None:
     """
     Initializes this module with the given config,
@@ -63,10 +56,13 @@ def init(config: dict) -> None:
 
     # we need load api markets
     _API.load_markets()
-    
+
     # Check if all pairs are available
     validate_pairs(config['exchange']['pair_whitelist'])
 
+    print("*"*20)
+
+
 
 def validate_pairs(pairs: List[str]) -> None:
     """
@@ -75,15 +71,22 @@ def validate_pairs(pairs: List[str]) -> None:
     :param pairs: list of pairs
     :return: None
     """
+    # Note: ccxt has BaseCurrency/QuoteCurrency format for pairs
+    if not _API.markets:
+        _API.load_markets()
+
     try:
-        markets = _API.get_markets()
+        markets = _API.markets
     except requests.exceptions.RequestException as e:
         logger.warning('Unable to validate pairs (assuming they are correct). Reason: %s', e)
         return
 
     stake_cur = _CONF['stake_currency']
     for pair in pairs:
-        if not pair.startswith(stake_cur):
+        # TODO: ccxt expects pairs in BTC/USD format
+        pair = pair.replace('_', '/')
+
+        if not pair.endswith(stake_cur):
             raise OperationalException(
                 'Pair {} not compatible with stake_currency: {}'.format(pair, stake_cur)
             )
diff --git a/freqtrade/misc.py b/freqtrade/misc.py
index cf2db1004..0cd88b06d 100644
--- a/freqtrade/misc.py
+++ b/freqtrade/misc.py
@@ -406,7 +406,7 @@ CONF_SCHEMA = {
                     'type': 'array',
                     'items': {
                         'type': 'string',
-                        'pattern': '^[0-9A-Z]+_[0-9A-Z]+$'
+                        'pattern': '^[0-9A-Z]+/[0-9A-Z]+$'
                     },
                     'uniqueItems': True
                 },
@@ -414,7 +414,7 @@ CONF_SCHEMA = {
                     'type': 'array',
                     'items': {
                         'type': 'string',
-                        'pattern': '^[0-9A-Z]+_[0-9A-Z]+$'
+                        'pattern': '^[0-9A-Z]+/[0-9A-Z]+$'
                     },
                     'uniqueItems': True
                 }
diff --git a/freqtrade/optimize/backtesting.py b/freqtrade/optimize/backtesting.py
index e8fcec875..107d13a25 100644
--- a/freqtrade/optimize/backtesting.py
+++ b/freqtrade/optimize/backtesting.py
@@ -11,7 +11,6 @@ import freqtrade.misc as misc
 import freqtrade.optimize as optimize
 from freqtrade import exchange
 from freqtrade.analyze import populate_buy_trend, populate_sell_trend
-from freqtrade.exchange import Bittrex
 from freqtrade.main import should_sell
 from freqtrade.persistence import Trade
 from freqtrade.strategy.strategy import Strategy
diff --git a/freqtrade/optimize/hyperopt.py b/freqtrade/optimize/hyperopt.py
index 76932f7e3..8eefb13c6 100644
--- a/freqtrade/optimize/hyperopt.py
+++ b/freqtrade/optimize/hyperopt.py
@@ -22,7 +22,6 @@ import freqtrade.vendor.qtpylib.indicators as qtpylib
 # Monkey patch config
 from freqtrade import main  # noqa; noqa
 from freqtrade import exchange, misc, optimize
-from freqtrade.exchange import Bittrex
 from freqtrade.misc import load_config
 from freqtrade.optimize import backtesting
 from freqtrade.optimize.backtesting import backtest