83 lines
2.6 KiB
Python
83 lines
2.6 KiB
Python
# -*- coding: utf-8; -*-
|
|
################################################################################
|
|
#
|
|
# Rattail -- Retail Software Framework
|
|
# Copyright © 2010-2021 Lance Edgar
|
|
#
|
|
# This file is part of Rattail.
|
|
#
|
|
# Rattail is free software: you can redistribute it and/or modify it under the
|
|
# terms of the GNU General Public License as published by the Free Software
|
|
# Foundation, either version 3 of the License, or (at your option) any later
|
|
# version.
|
|
#
|
|
# Rattail 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 General Public License for more
|
|
# details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License along with
|
|
# Rattail. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
################################################################################
|
|
"""
|
|
Dash App "Base"
|
|
"""
|
|
|
|
import datetime
|
|
|
|
import dash
|
|
import pandas as pd
|
|
|
|
|
|
def make_basic_dash_app(config):
|
|
"""
|
|
Make and return a simple Dash app.
|
|
|
|
:param config: Rattail config object.
|
|
"""
|
|
dashapp = dash.Dash(__name__)
|
|
# dashapp.rattail_config = config
|
|
return dashapp
|
|
|
|
|
|
def make_trainwreck_dataframe(config, date):
|
|
"""
|
|
Make and return a simple dataframe for use with a Dash app,
|
|
containing data from Trainwreck.
|
|
|
|
:param date: Either a ``datetime.date`` object, or a string in
|
|
YYYY-MM-DD format.
|
|
"""
|
|
app = config.get_app()
|
|
|
|
if not isinstance(date, datetime.date):
|
|
date = datetime.datetime.strptime(date, '%Y-%m-%d').date()
|
|
|
|
start_time = datetime.datetime.combine(date, datetime.time(0))
|
|
start_time = app.localtime(start_time)
|
|
|
|
end_time = datetime.datetime.combine(date + datetime.timedelta(days=1),
|
|
datetime.time(0))
|
|
end_time = app.localtime(end_time)
|
|
|
|
# TODO: maybe inspect date and use different year engine
|
|
trainwreck_engine = config.trainwreck_engine
|
|
|
|
# TODO: should transform timezone after fetch? this is surely quicker though
|
|
df = pd.read_sql(
|
|
"""
|
|
SELECT end_time AT TIME ZONE 'UTC' AT TIME ZONE %(timezone)s as end_time,
|
|
terminal_id, subtotal
|
|
FROM transaction
|
|
WHERE end_time >= %(start_time)s AT TIME ZONE 'UTC' AT TIME ZONE %(timezone)s
|
|
AND end_time < %(end_time)s AT TIME ZONE 'UTC' AT TIME ZONE %(timezone)s
|
|
ORDER BY end_time, terminal_id
|
|
""",
|
|
trainwreck_engine,
|
|
params={'timezone': str(app.get_timezone()),
|
|
'start_time': start_time,
|
|
'end_time': end_time})
|
|
|
|
return df
|