relocate `date_format_template` from `daemonize` -> `data`; graph fro…

…m "one week ago"; installation administrivia

coincharts/daemonize.py

@@ -19,6 +19,7 @@
 
 from coincharts import config, db
 from coincharts.models import THE_DATETIME_FIELD, THE_PRICE_FIELD
+from coincharts.data import date_format_template
 
 # We're replacing the module with a dict. Importing the file shouldn't result in reading from disk, etc. That's why.
 config = config.get_config()
@@ -38,7 +39,6 @@ class PriceSeries(object):
         time_end='',
         limit=100000,
     )
-    date_format_template = '%Y-%m-%dT%H:%M:%S.%f0Z'  # magic
     headers = {'X-CoinAPI-Key': config['api_key']}
 
     # this is the beginning of time if we don't have any local data
@@ -58,7 +58,7 @@ def validate_datetime_object(cls, dt):
     def get_normalized_datetime(cls, dt):
         if not isinstance(dt, datetime.datetime):
             dt = parse_dt(dt)
-        return dt.strftime(cls.date_format_template)
+        return dt.strftime(date_format_template)
 
     @classmethod
     def round_up_hour(cls, dt):

coincharts/data.py

@@ -12,6 +12,7 @@
 from coincharts import config
 config = config.get_config()
 
+date_format_template = '%Y-%m-%dT%H:%M:%S.%f0Z'  # magic
 
 class SymbolInfo(object):
 

coincharts/views.py

@@ -1,3 +1,8 @@
+
+import time
+import datetime
+import pytz
+
 from django.shortcuts import render
 
 from django.shortcuts import get_object_or_404, render
@@ -7,18 +12,23 @@
 from dateutil.parser import parse as parse_dt
 import time
 from coincharts import config
-from coincharts.data import SymbolComparison, SymbolInfo
+from coincharts.data import SymbolComparison, SymbolInfo, date_format_template
 
 config = config.get_config()
 
 import svg_graph
 
 def index(request):
 
+    # this is the totally intuitive way of getting the ISO8601 formatted date for one week ago UTC
+    one_week_ago = datetime.datetime.fromtimestamp(
+        time.time() - 7 * 24 * 60 * 60,
+        tz=pytz.UTC).strftime(date_format_template)
+
     symbols = config['history_symbols']
     comparison = SymbolComparison()
     for symbol in symbols:
-        comparison[symbol] = SymbolInfo(symbol)
+        comparison[symbol] = SymbolInfo(symbol, since=one_week_ago)
     history_generator = comparison.normalized_history_averages()
 
     eth = comparison['BITSTAMP_SPOT_ETH_USD']

requirements.txt

@@ -2,3 +2,4 @@ python-daemon>=2.2
 requests>=2.18
 python-dateutil>=2.7
 PyYAML>=3.13
+git+https://github.com/stnbu/mutils.git

setup.py

@@ -24,6 +24,6 @@ def read(file):
     provides=[name],
     packages=[name],
         entry_points = {
-        'console_scripts': ['coincharts-daemon=coincharts.daemon:main'],
+        'console_scripts': ['coincharts-daemon=coincharts.daemonize:main'],
     }
 )