# -*- coding: utf-8 -*-

from ccxt.base.exchange import Exchange


class bitflyer (Exchange):

    def describe(self):
        return self.deep_extend(super(bitflyer, self).describe(), {
            'id': 'bitflyer',
            'name': 'bitFlyer',
            'countries': 'JP',
            'version': 'v1',
            'rateLimit': 500,
            'hasCORS': False,
            'hasWithdraw': True,
            'urls': {
                'logo': 'https://user-images.githubusercontent.com/1294454/28051642-56154182-660e-11e7-9b0d-6042d1e6edd8.jpg',
                'api': 'https://api.bitflyer.jp',
                'www': 'https://bitflyer.jp',
                'doc': 'https://bitflyer.jp/API',
            },
            'api': {
                'public': {
                    'get': [
                        'getmarkets',    # or 'markets'
                        'getboard',      # or 'board'
                        'getticker',     # or 'ticker'
                        'getexecutions',  # or 'executions'
                        'gethealth',
                        'getchats',
                    ],
                },
                'private': {
                    'get': [
                        'getpermissions',
                        'getbalance',
                        'getcollateral',
                        'getcollateralaccounts',
                        'getaddresses',
                        'getcoinins',
                        'getcoinouts',
                        'getbankaccounts',
                        'getdeposits',
                        'getwithdrawals',
                        'getchildorders',
                        'getparentorders',
                        'getparentorder',
                        'getexecutions',
                        'getpositions',
                        'gettradingcommission',
                    ],
                    'post': [
                        'sendcoin',
                        'withdraw',
                        'sendchildorder',
                        'cancelchildorder',
                        'sendparentorder',
                        'cancelparentorder',
                        'cancelallchildorders',
                    ],
                },
            },
            'fees': {
                'trading': {
                    'maker': 0.25 / 100,
                    'taker': 0.25 / 100,
                },
            },
        })

    def fetch_markets(self):
        markets = self.publicGetMarkets()
        result = []
        for p in range(0, len(markets)):
            market = markets[p]
            id = market['product_code']
            currencies = id.split('_')
            base = None
            quote = None
            symbol = id
            numCurrencies = len(currencies)
            if numCurrencies == 1:
                base = symbol[0:3]
                quote = symbol[3:6]
            elif numCurrencies == 2:
                base = currencies[0]
                quote = currencies[1]
                symbol = base + '/' + quote
            else:
                base = currencies[1]
                quote = currencies[2]
            result.append({
                'id': id,
                'symbol': symbol,
                'base': base,
                'quote': quote,
                'info': market,
            })
        return result

    def fetch_balance(self, params={}):
        self.load_markets()
        response = self.privateGetBalance()
        balances = {}
        for b in range(0, len(response)):
            account = response[b]
            currency = account['currency_code']
            balances[currency] = account
        result = {'info': response}
        currencies = list(self.currencies.keys())
        for i in range(0, len(currencies)):
            currency = currencies[i]
            account = self.account()
            if currency in balances:
                account['total'] = balances[currency]['amount']
                account['free'] = balances[currency]['available']
                account['used'] = account['total'] - account['free']
            result[currency] = account
        return self.parse_balance(result)

    def fetch_order_book(self, symbol, params={}):
        self.load_markets()
        orderbook = self.publicGetBoard(self.extend({
            'product_code': self.market_id(symbol),
        }, params))
        return self.parse_order_book(orderbook, None, 'bids', 'asks', 'price', 'size')

    def fetch_ticker(self, symbol, params={}):
        self.load_markets()
        ticker = self.publicGetTicker(self.extend({
            'product_code': self.market_id(symbol),
        }, params))
        timestamp = self.parse8601(ticker['timestamp'])
        return {
            'symbol': symbol,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'high': None,
            'low': None,
            'bid': float(ticker['best_bid']),
            'ask': float(ticker['best_ask']),
            'vwap': None,
            'open': None,
            'close': None,
            'first': None,
            'last': float(ticker['ltp']),
            'change': None,
            'percentage': None,
            'average': None,
            'baseVolume': float(ticker['volume_by_product']),
            'quoteVolume': None,
            'info': ticker,
        }

    def parse_trade(self, trade, market=None):
        side = None
        order = None
        if 'side' in trade:
            if trade['side']:
                side = trade['side'].lower()
                id = side + '_child_order_acceptance_id'
                if id in trade:
                    order = trade[id]
        timestamp = self.parse8601(trade['exec_date'])
        return {
            'id': str(trade['id']),
            'info': trade,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'symbol': market['symbol'],
            'order': order,
            'type': None,
            'side': side,
            'price': trade['price'],
            'amount': trade['size'],
        }

    def fetch_trades(self, symbol, since=None, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        response = self.publicGetExecutions(self.extend({
            'product_code': market['id'],
        }, params))
        return self.parse_trades(response, market, since, limit)

    def create_order(self, symbol, type, side, amount, price=None, params={}):
        self.load_markets()
        order = {
            'product_code': self.market_id(symbol),
            'child_order_type': type.upper(),
            'side': side.upper(),
            'price': price,
            'size': amount,
        }
        result = self.privatePostSendchildorder(self.extend(order, params))
        return {
            'info': result,
            'id': result['child_order_acceptance_id'],
        }

    def cancel_order(self, id, symbol=None, params={}):
        self.load_markets()
        return self.privatePostCancelchildorder(self.extend({
            'parent_order_id': id,
        }, params))

    def withdraw(self, currency, amount, address, params={}):
        self.load_markets()
        response = self.privatePostWithdraw(self.extend({
            'currency_code': currency,
            'amount': amount,
            # 'bank_account_id': 1234,
        }, params))
        return {
            'info': response,
            'id': response['message_id'],
        }

    def sign(self, path, api='public', method='GET', params={}, headers=None, body=None):
        request = '/' + self.version + '/'
        if api == 'private':
            request += 'me/'
        request += path
        if method == 'GET':
            if params:
                request += '?' + self.urlencode(params)
        url = self.urls['api'] + request
        if api == 'private':
            self.check_required_credentials()
            nonce = str(self.nonce())
            body = self.json(params)
            auth = ''.join([nonce, method, request, body])
            headers = {
                'ACCESS-KEY': self.apiKey,
                'ACCESS-TIMESTAMP': nonce,
                'ACCESS-SIGN': self.hmac(self.encode(auth), self.encode(self.secret)),
                'Content-Type': 'application/json',
            }
        return {'url': url, 'method': method, 'body': body, 'headers': headers}