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1 | import ccxt | |
2 | # Put your poloniex api key in market.py | |
3 | from market import market | |
4 | ||
5 | def static_var(varname, value): | |
6 | def decorate(func): | |
7 | setattr(func, varname, value) | |
8 | return func | |
9 | return decorate | |
10 | ||
11 | max_digits = 18 | |
12 | ||
13 | repartition_pertenthousand = { | |
14 | "BTC": 2857, | |
15 | "ZEC": 3701, | |
16 | "DOGE": 1805, | |
17 | "DGB": 1015, | |
18 | "SC": 623, | |
19 | } | |
20 | ||
21 | ||
22 | def formatted_price(value): | |
23 | return round(value / 10**max_digits, 8) | |
24 | ||
25 | @static_var("cache", {}) | |
26 | def get_ticker(c1, c2, market): | |
27 | def invert(ticker): | |
28 | return { | |
29 | "inverted": True, | |
30 | "bid": float(1/ticker["ask"]), | |
31 | "ask": float(1/ticker["bid"]), | |
32 | "bidA": float(1/ticker["askA"]), | |
33 | "askA": float(1/ticker["bidA"]), | |
34 | } | |
35 | def augment_ticker(ticker): | |
36 | # FIXME: need to do better than just a multiplier | |
37 | ticker.update({ | |
38 | "inverted": False, | |
39 | "bidA": ticker["bid"] * 0.99, | |
40 | "askA": ticker["ask"] * 1.01, | |
41 | }) | |
42 | ||
43 | if (c1, c2, market.__class__) in get_ticker.cache: | |
44 | return get_ticker.cache[(c1, c2, market.__class__)] | |
45 | if (c2, c1, market.__class__) in get_ticker.cache: | |
46 | return invert(get_ticker.cache[(c2, c1, market.__class__)]) | |
47 | ||
48 | try: | |
49 | get_ticker.cache[(c1, c2, market.__class__)] = market.fetch_ticker("{}/{}".format(c1, c2)) | |
50 | augment_ticker(get_ticker.cache[(c1, c2, market.__class__)]) | |
51 | except ccxt.ExchangeError: | |
52 | try: | |
53 | get_ticker.cache[(c2, c1, market.__class__)] = market.fetch_ticker("{}/{}".format(c2, c1)) | |
54 | augment_ticker(get_ticker.cache[(c2, c1, market.__class__)]) | |
55 | except ccxt.ExchangeError: | |
56 | get_ticker.cache[(c1, c2, market.__class__)] = None | |
57 | return get_ticker(c1, c2, market) | |
58 | ||
59 | def fetch_balances(market): | |
60 | balances = {} | |
61 | fetched_balance = market.fetch_balance() | |
62 | for key, value in fetched_balance["total"].items(): | |
63 | if value > 0: | |
64 | balances[key] = int(value * 10**max_digits) | |
65 | return balances | |
66 | ||
67 | def assets_value(assets, market, base_currency="BTC"): | |
68 | repartition_in_base_currency = {} | |
69 | for currency, asset_value in assets.items(): | |
70 | if currency == base_currency: | |
71 | repartition_in_base_currency[currency] = asset_value | |
72 | else: | |
73 | asset_ticker = get_ticker(currency, base_currency, market) | |
74 | if asset_ticker is None: | |
75 | raise Exception("This asset is not available in the chosen market") | |
76 | repartition_in_base_currency[currency] = int(asset_ticker["bidA"] * asset_value) | |
77 | return repartition_in_base_currency | |
78 | ||
79 | def dispatch_assets(base_currency_value, repartition_pertenthousand, market, base_currency="BTC"): | |
80 | sum_pertenthousand = sum([v for k, v in repartition_pertenthousand.items()]) | |
81 | repartition_in_base_currency = {} | |
82 | for currency, ptt in repartition_pertenthousand.items(): | |
83 | repartition_in_base_currency[currency] = int(ptt * base_currency_value / sum_pertenthousand) | |
84 | return repartition_in_base_currency | |
85 | ||
86 | def compute_moves(current_assets, repartition_pertenthousand, market, base_currency="BTC"): | |
87 | value_in_base = assets_value(current_assets, market, base_currency=base_currency) | |
88 | total_base_value = sum([ v for k, v in value_in_base.items()]) | |
89 | ||
90 | new_repartition = dispatch_assets(total_base_value, repartition_pertenthousand, market, base_currency=base_currency) | |
91 | mouvements = {} | |
92 | ||
93 | for key in set(value_in_base.keys()).union(set(new_repartition.keys())): | |
94 | mouvements[key] = value_in_base.get(key, 0) - new_repartition.get(key, 0) | |
95 | ||
96 | return mouvements | |
97 | ||
98 | def compute_order(currency, value, market, base_currency="BTC"): | |
99 | if currency == base_currency or value == 0: | |
100 | return [None, 0, False] | |
101 | ||
102 | asset_ticker = get_ticker(currency, base_currency, market) | |
103 | if asset_ticker["inverted"]: | |
104 | asset_ticker = get_ticker(base_currency, currency, market) | |
105 | if value > 0: | |
106 | rate = asset_ticker["askA"] | |
107 | return ["buy", rate, True] | |
108 | else: | |
109 | rate = asset_ticker["bidA"] | |
110 | return ["sell", rate, True] | |
111 | else: | |
112 | if value > 0: | |
113 | rate = asset_ticker["bidA"] | |
114 | return ["sell", rate, False] | |
115 | else: | |
116 | rate = asset_ticker["askA"] | |
117 | return ["buy", rate, False] | |
118 | ||
119 | def make_order(currency, value, market, base_currency="BTC"): | |
120 | action, rate, inverted = compute_order(currency, value, market, base_currency=base_currency) | |
121 | amount = formatted_price(abs(value)) | |
122 | if not inverted: | |
123 | symbol = "{}/{}".format(currency, base_currency) | |
124 | else: | |
125 | symbol = "{}/{}".format(base_currency, currency) | |
126 | return market.create_order(symbol, 'limit', action, amount, price=rate) | |
127 | ||
128 | def make_orders(current_assets, repartition_pertenthousand, market, base_currency="BTC"): | |
129 | mouvements = compute_moves( | |
130 | current_assets, | |
131 | repartition_pertenthousand, | |
132 | market, | |
133 | base_currency=base_currency) | |
134 | ||
135 | results = [] | |
136 | for currency, value in sorted(mouvements.items(), key=lambda x: x[1]): | |
137 | # FIXME: wait for sales to finish | |
138 | results.append(make_order(currency, value, market, base_currency=base_currency)) | |
139 | return results | |
140 | ||
141 | def print_assets(assets, indent="", market=None, base_currency="BTC"): | |
142 | if market is not None: | |
143 | format_string = "{}{} {} ({} {})" | |
144 | else: | |
145 | format_string = "{}{} {}" | |
146 | base_currency_price = 0 | |
147 | ||
148 | for currency, value in assets.items(): | |
149 | if market is not None: | |
150 | asset_ticker = get_ticker(currency, base_currency, market) | |
151 | base_currency_price = asset_ticker["bidA"] * value | |
152 | print(format_string.format( | |
153 | indent, | |
154 | formatted_price(value), | |
155 | currency, | |
156 | formatted_price(base_currency_price), | |
157 | base_currency)) | |
158 | ||
159 | def print_orders(current_assets, repartition_pertenthousand, market, base_currency="BTC"): | |
160 | mouvements = compute_moves( | |
161 | current_assets, | |
162 | repartition_pertenthousand, | |
163 | market, | |
164 | base_currency=base_currency) | |
165 | ||
166 | for currency, value in mouvements.items(): | |
167 | action, rate, inverted = compute_order( | |
168 | currency, | |
169 | value, | |
170 | market, | |
171 | base_currency=base_currency) | |
172 | if action is not None: | |
173 | currency_price = int(value / rate) | |
174 | ||
175 | if not inverted: | |
176 | c1, c2 = [base_currency, currency] | |
177 | v1, v2 = [value, currency_price] | |
178 | else: | |
179 | c1, c2 = [currency, base_currency] | |
180 | v1, v2 = [currency_price, value] | |
181 | ||
182 | print("need to {} {} {}'s worth of {}, i.e. {} {}".format( | |
183 | action, | |
184 | formatted_price(abs(v1)), c1, | |
185 | c2, | |
186 | formatted_price(abs(v2)), c2)) | |
187 | ||
188 | current_assets = fetch_balances(market) | |
189 | print_orders(current_assets, repartition_pertenthousand, market) |