Generator of list of coins and tokens supported by Trezor.

coins_details.py

@@ -0,0 +1,121 @@
+#!/usr/bin/env python3
+"""Fetch information about coins and tokens supported by Trezor and update it in coins_details.json."""
+import time
+import json
+import requests
+import pprint
+
+SKIP_COINMARKETCAP = False
+
+def coinmarketcap_info(shortcut):
+    if SKIP_COINMARKETCAP:
+        raise Exception("Skipping coinmarketcap call")
+
+    shortcut = shortcut.replace(' ', '-')
+    url = 'https://api.coinmarketcap.com/v1/ticker/%s/?convert=USD' % shortcut
+    ret = requests.get(url)
+    data = ret.json()
+    try:
+        return data[0]
+    except:
+        print("Cannot fetch info for %s" % shortcut)
+
+def update_marketcap(obj, shortcut):
+    try:
+        obj['marketcap_usd'] = int(float(coinmarketcap_info(shortcut)['market_cap_usd']))
+    except:
+        pass
+
+def coinmarketcap_global():
+    if SKIP_COINMARKETCAP:
+        raise Exception("Skipping coinmarketcap call")
+
+    url = 'https://api.coinmarketcap.com/v1/global'
+    ret = requests.get(url)
+    data = ret.json()
+    return data
+
+def set_default(obj, key, default_value):
+    obj[key] = obj.setdefault(key, default_value)
+
+def update_info(details):
+    details['info']['updated_at'] = int(time.time())
+    details['info']['updated_at_readable'] = time.asctime()
+    details['info']['coins'] = len(details['coins'])
+    
+    try:
+        details['info']['total_marketcap_usd'] = int(coinmarketcap_global()['total_market_cap_usd'])
+    except:
+        pass
+
+    marketcap = 0
+    for c in details['coins']:
+        marketcap += details['coins'][c].setdefault('marketcap_usd', 0)
+    details['info']['marketcap_usd'] = marketcap
+
+def update_coins(details):
+    coins = json.load(open('coins.json', 'r'))
+
+    for coin in coins:
+        if coin['firmware'] != 'stable':
+            continue
+
+        print("Updating", coin['coin_label'], coin['coin_shortcut'])
+        out = details['coins'].setdefault(coin['coin_shortcut'], {})
+        out['shortcut'] = coin['coin_shortcut']
+        out['type'] = 'coin'
+
+        set_default(out, 'name', coin['coin_label'])
+        set_default(out, 't1_enabled', 'yes')
+        set_default(out, 't2_enabled', 'yes')
+        update_marketcap(out, coin['coin_label'])
+
+        #pprint.pprint(coin)
+
+def update_erc20(details):
+    # FIXME Parse tokens using trezor-common/ethereum_tokens-gen.py
+    r = requests.get('https://raw.githubusercontent.com/trezor/trezor-core/master/src/apps/ethereum/tokens.py')
+    d = {}
+    exec(r.text, d)
+    for t in d['tokens']:
+        token = t[2]
+        print('Updating', token)
+
+        out = details['coins'].setdefault(token, {})
+        out['type'] = 'erc20'
+        out['chain_id'] = t[0]
+        set_default(out, 't1_enabled', 'yes')
+        set_default(out, 't2_enabled', 'yes')
+
+def update_ethereum(details):
+    print('Updating Ethereum ETH')
+    out = details['coins'].setdefault('ETH', {})
+    out['name'] = 'Ethereum'
+    out['type'] = 'coin'
+    set_default(out, 't1_enabled', 'yes')
+    set_default(out, 't2_enabled', 'yes')
+    update_marketcap(out, 'ethereum')
+
+def update_nem(details):
+    print('Updating NEM')
+    out = details['coins'].setdefault('NEM', {})
+    out['name'] = 'NEM'
+    out['type'] = 'coin'
+    set_default(out, 't1_enabled', 'yes')
+    set_default(out, 't2_enabled', 'yes')   
+    update_marketcap(out, 'nem')
+
+if __name__ == '__main__':
+    try:
+        details = json.load(open('coins_details.json', 'r'))
+    except FileNotFoundError:
+        details = {'coins': {}, 'info': {}}
+
+    update_coins(details)
+    update_erc20(details)
+    update_ethereum(details)
+    update_nem(details)
+    update_info(details)
+
+    print(json.dumps(details, sort_keys=True, indent=4))
+    json.dump(details, open('coins_details.json', 'w'), sort_keys=True, indent=4)