DrCr/drcr/views.py
RunasSudo e313758192
Basic caching of running balances
About 60% performance improvement on balance report
2024-11-09 23:47:14 +11:00

131 lines
4.9 KiB
Python

# DrCr: Web-based double-entry bookkeeping framework
# Copyright (C) 2022–2024 Lee Yingtong Li (RunasSudo)
#
# 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, either version 3 of the License, or
# (at your option) any later version.
#
# 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.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
from flask import redirect, render_template, request, url_for
from .database import db
from .models import AccountConfiguration, Amount, Balance, Posting, TrialBalancer, reporting_commodity
from .plugins import account_kinds, advanced_reports, data_sources
from .reports import balance_sheet_report, income_statement_report
from .webapp import all_transactions, api_transactions, app
from itertools import groupby
@app.route('/')
def index():
return render_template('index.html', data_sources=data_sources, advanced_reports=advanced_reports)
@app.route('/chart-of-accounts')
def chart_of_accounts():
#accounts = sorted(db.session.execute(db.select(Posting.account)).unique().scalars().all())
accounts = sorted(list(set(p.account for t in all_transactions() for p in t.postings)))
# Get existing AccountConfiguration's
account_configurations = AccountConfiguration.get_all()
# Preprocess account kinds
account_kinds_by_plugin = {v: list(g) for v, g in groupby(account_kinds, key=lambda k: k[0][:k[0].index('.')])}
account_kinds_map = {name: label for name, label in account_kinds}
# TODO: Handle orphans
return render_template(
'chart_of_accounts.html',
accounts=accounts,
account_configurations=account_configurations,
account_kinds_by_plugin=account_kinds_by_plugin,
account_kinds_map=account_kinds_map
)
@app.route('/chart-of-accounts/add-kind', methods=['POST'])
def account_add_kind():
for account in request.form.getlist('sel-account'):
account_configuration = AccountConfiguration(account=account, kind=request.form['kind'])
db.session.add(account_configuration)
db.session.commit()
return redirect(url_for('chart_of_accounts'))
@app.route('/general-ledger')
def general_ledger():
return render_template(
'general_ledger.html',
commodity_detail=request.args.get('commodity_detail', '0') == '1',
transactions=sorted(all_transactions(), key=lambda t: t.dt, reverse=True)
)
@app.route('/trial-balance')
def trial_balance():
balancer = TrialBalancer.from_cached()
balancer.apply_transactions(api_transactions())
total_dr = Amount(sum(v.quantity for v in balancer.accounts.values() if v.quantity > 0), reporting_commodity())
total_cr = Amount(sum(v.quantity for v in balancer.accounts.values() if v.quantity < 0), reporting_commodity())
return render_template('trial_balance.html', accounts=dict(sorted(balancer.accounts.items())), total_dr=total_dr, total_cr=total_cr)
@app.route('/account-transactions')
def account_transactions():
# FIXME: Filter in SQL
transactions = [t for t in all_transactions() if any(p.account == request.args['account'] for p in t.postings)]
if request.args.get('commodity_detail', '0') == '1':
# Pre-compute running totals
# At the level of individual transactions
running_totals = {}
running_total = Balance()
for transaction in sorted(transactions, key=lambda t: t.dt):
for posting in transaction.postings:
if posting.account == request.args['account']:
running_total.add(posting.amount())
running_totals[transaction] = running_total.clone()
running_total.clean()
return render_template(
'transactions_commodity_detail.html',
account=request.args['account'],
running_totals=running_totals,
transactions=reversed(sorted(transactions, key=lambda t: t.dt))
)
else:
# Pre-compute running totals
# There can be more than one posting per account per transaction, so track the running total at the level of individual postings
running_totals = {}
running_total = Amount(0, reporting_commodity())
for transaction in sorted(transactions, key=lambda t: t.dt):
for posting in transaction.postings:
if posting.account == request.args['account']:
running_total += posting.amount().as_cost()
running_totals[posting] = running_total
return render_template(
'transactions.html',
account=request.args['account'],
running_totals=running_totals,
transactions=reversed(sorted(transactions, key=lambda t: t.dt))
)
@app.route('/balance-sheet')
def balance_sheet():
report = balance_sheet_report()
return render_template('report.html', report=report)
@app.route('/income-statement')
def income_statement():
report = income_statement_report()
return render_template('report.html', report=report)