Add Coinbase API and make it default

3 files changed, 122 insertions, 22 deletions

diff --git a/README b/README
index 1027783..8382397 100644
--- a/README
+++ b/README
@@ -34,7 +34,7 @@ with the `-a` option.
 Example: `$ coinfetch -a bter usd doge`
 
 The above example will be the same as calling `coinfetch usd doge` in version
-2.x, which used the BTer API. The default API is BTC-E.
+2.x, which used the BTer API. The default API is Coinbase.
 
 For help using `coinfetch` and for a list of options, use `coinfetch --help`.
 
@@ -80,17 +80,21 @@ and BTC-E; however, it does have support for Dogecoin which is favored by
 Delwink. If you want a more accurate calculation for Dogecoin and other
 altcoins, we recommend the ccc API.
 
-Note that the ccc API is new to coinfetch and does not match the formula
-expected by the original code. Expect some bugs when using it: the numbers
-should be accurate, but it may error out where the other APIs do not. Please
-report bugs to [Delwink's bug tracking system][2].
+Version 5.3 changes the default API to Coinbase. Coinbase appears to be
+well-established and unlikely to disappear. The other APIs previously added to
+Coinfetch have been unreliable at best and broken at worst. The goal with this
+project is to have Coinfetch work out of the box to give pricing data for the
+most popular currencies (which Coinbase supports) and to optionally support
+other currencies (as offered by the alternative APIs).
+
+Please report bugs to [Delwink's bug tracking system][2].
 
 Licensing
 ---------
 
-This script is [free software](http://gnu.org/philosophy/free-sw.html),
-licensed under the terms of version 3 of the GNU Affero General Public
-License. See [COPYING](COPYING) for more information.
+This script is [free software](http://gnu.org/p/free-sw.html), licensed under
+the terms of version 0.5 of the Copyfree Open Innovation License. See
+[COPYING](COPYING) for more information.
 
 [1]: mailto:contribute@delwink.com
-[2]: http://bugs.delwink.com/index.php?project=4&do=index
+[2]: https://delwink.com/bugs
diff --git a/cfetch/plugins/cb.py b/cfetch/plugins/cb.py
new file mode 100644
index 0000000..fd531ed
--- /dev/null
+++ b/cfetch/plugins/cb.py
@@ -0,0 +1,73 @@
+##
+##  coinfetch-api-cb - Coinbase API plugin for coinfetch
+##  Copyright (C) 2017 Delwink, LLC
+##
+## Redistributions, modified or unmodified, in whole or in part, must retain
+## applicable copyright or other legal privilege notices, these conditions, and
+## the following license terms and disclaimer.  Subject to these conditions,
+## the holder(s) of copyright or other legal privileges, author(s) or
+## assembler(s), and contributors of this work hereby grant to any person who
+## obtains a copy of this work in any form:
+##
+## 1. Permission to reproduce, modify, distribute, publish, sell, sublicense,
+## use, and/or otherwise deal in the licensed material without restriction.
+##
+## 2. A perpetual, worldwide, non-exclusive, royalty-free, irrevocable patent
+## license to reproduce, modify, distribute, publish, sell, use, and/or
+## otherwise deal in the licensed material without restriction, for any and all
+## patents:
+##
+##     a. Held by each such holder of copyright or other legal privilege,
+##     author or assembler, or contributor, necessarily infringed by the
+##     contributions alone or by combination with the work, of that privilege
+##     holder, author or assembler, or contributor.
+##
+##     b. Necessarily infringed by the work at the time that holder of
+##     copyright or other privilege, author or assembler, or contributor made
+##     any contribution to the work.
+##
+## NO WARRANTY OF ANY KIND IS IMPLIED BY, OR SHOULD BE INFERRED FROM, THIS
+## LICENSE OR THE ACT OF DISTRIBUTION UNDER THE TERMS OF THIS LICENSE,
+## INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR
+## A PARTICULAR PURPOSE, AND NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS,
+## ASSEMBLERS, OR HOLDERS OF COPYRIGHT OR OTHER LEGAL PRIVILEGE BE LIABLE FOR
+## ANY CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER IN ACTION OF CONTRACT, TORT,
+## OR OTHERWISE ARISING FROM, OUT OF, OR IN CONNECTION WITH THE WORK OR THE USE
+## OF OR OTHER DEALINGS IN THE WORK.
+##
+
+from cfetch import register_ticker, NoSuchKindException, NoSuchPairException
+from cfetch import Ticker
+
+class CoinbaseTicker(Ticker):
+    def __init__(self, path):
+        super().__init__(path)
+
+    def get_pair(self, a, b):
+        return '{}-{}'.format(a.upper(), b.upper())
+
+    def get_pair_data(self, response, pair=None):
+        return response.json()
+
+    def get_rate_pow(self, a, b, amt, power, kind):
+        if kind not in ('spot', 'buy', 'sell'):
+            raise NoSuchKindException(kind)
+
+        r = get(self.path + self.get_pair(a, b) + '/' + kind,
+                headers={'CB-VERSION': '2017-09-19'})
+
+        res = self.get_pair_data(r, (a, b))
+        print(r.text)
+        if 'data' not in res:
+            raise NoSuchPairException('{}/{}'.format(a, b))
+
+        if 'errors' in res:
+            raise Exception(res['errors'])
+
+        return (float(res['data']['amount']) ** power) * amt
+
+    def get_rate(self, a, b, amt=1, kind='spot'):
+        return super().get_rate(a, b, amt, kind)
+
+register_ticker('cb', 'The Coinbase ticker (built-in)',
+                CoinbaseTicker('https://api.coinbase.com/v2/prices/'))
diff --git a/coinfetch b/coinfetch
index 8edd10b..279ce0e 100755
--- a/coinfetch
+++ b/coinfetch
@@ -1,19 +1,40 @@
 #! /usr/bin/env python3
 ##
 ##  coinfetch - Cryptocurrency price fetcher
-##  Copyright (C) 2015-2016 Delwink, LLC
+##  Copyright (C) 2015-2017 Delwink, LLC
 ##
-##  This program is free software: you can redistribute it and/or modify
-##  it under the terms of the GNU Affero General Public License as published by
-##  the Free Software Foundation, version 3 only.
+## Redistributions, modified or unmodified, in whole or in part, must retain
+## applicable copyright or other legal privilege notices, these conditions, and
+## the following license terms and disclaimer.  Subject to these conditions,
+## the holder(s) of copyright or other legal privileges, author(s) or
+## assembler(s), and contributors of this work hereby grant to any person who
+## obtains a copy of this work in any form:
 ##
-##  This program is distributed in the hope that it will be useful,
-##  but WITHOUT ANY WARRANTY; without even the implied warranty of
-##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-##  GNU Affero General Public License for more details.
+## 1. Permission to reproduce, modify, distribute, publish, sell, sublicense,
+## use, and/or otherwise deal in the licensed material without restriction.
 ##
-##  You should have received a copy of the GNU Affero General Public License
-##  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+## 2. A perpetual, worldwide, non-exclusive, royalty-free, irrevocable patent
+## license to reproduce, modify, distribute, publish, sell, use, and/or
+## otherwise deal in the licensed material without restriction, for any and all
+## patents:
+##
+##     a. Held by each such holder of copyright or other legal privilege,
+##     author or assembler, or contributor, necessarily infringed by the
+##     contributions alone or by combination with the work, of that privilege
+##     holder, author or assembler, or contributor.
+##
+##     b. Necessarily infringed by the work at the time that holder of
+##     copyright or other privilege, author or assembler, or contributor made
+##     any contribution to the work.
+##
+## NO WARRANTY OF ANY KIND IS IMPLIED BY, OR SHOULD BE INFERRED FROM, THIS
+## LICENSE OR THE ACT OF DISTRIBUTION UNDER THE TERMS OF THIS LICENSE,
+## INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR
+## A PARTICULAR PURPOSE, AND NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS,
+## ASSEMBLERS, OR HOLDERS OF COPYRIGHT OR OTHER LEGAL PRIVILEGE BE LIABLE FOR
+## ANY CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER IN ACTION OF CONTRACT, TORT,
+## OR OTHERWISE ARISING FROM, OUT OF, OR IN CONNECTION WITH THE WORK OR THE USE
+## OF OR OTHER DEALINGS IN THE WORK.
 ##
 
 from argparse import Action, ArgumentParser
@@ -27,8 +48,10 @@ from os import makedirs
 __title__ = 'coinfetch'
 __author__ = 'David McMackins II'
 __version_info__ = '''{} {}
-Copyright (C) 2015-2016 Delwink, LLC
-License AGPLv3: GNU AGPL version 3 only <http://gnu.org/licenses/agpl.html>.
+Copyright (C) 2015-2017 Delwink, LLC
+License COIL: Copyfree Open Innovation License 0.5
+<http://coil.apotheon.org/plaintext/00.5.txt>
+
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.
 
@@ -43,7 +66,7 @@ if not exists(CONFIG_PATH):
         makedirs(CONFIG_DIR)
 
     config['coinfetch'] = {}
-    config['coinfetch']['api'] = 'btce'
+    config['coinfetch']['api'] = 'cb'
     with open(CONFIG_PATH, 'w') as f:
         config.write(f)
 else: