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views.py
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views.py
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import pandas as pd
from collections import defaultdict
from django.http import HttpResponse
from django.shortcuts import render
from django.template import loader
from datetime import date, datetime, timedelta
from weasyprint import HTML
from .models import Client, CreditNote, Invoice, Profile, Project, TimeEntry
from .forms import InvoiceForm, TimesheetForm
def generate_timesheet(request):
form = TimesheetForm()
context = {'form': form}
return render(request, 'timesheet_form.html', context)
def display_timesheet(request):
"""
get all time entries for a project and date range, and generate a timesheet.
Expected query parameters:
- project: project id
- start: start date (yyyy-mm-dd)
- end: end date (yyyy-mm-dd)
"""
if request.method == 'GET':
print(request.GET)
project_id = request.GET.get('project', '1')
start_str = request.GET.get('start', '2017-01-01')
end_str = request.GET.get('end', '2017-12-31')
time_unit = request.GET.get('unit', 'days')
project = Project.objects.get(pk=int(project_id))
client = Client.objects.get(pk=int(project.client_id))
user = Profile.objects.get(pk=int(project.user_id))
start = datetime.strptime(start_str, '%Y-%m-%d')
end = datetime.strptime(end_str, '%Y-%m-%d') + timedelta(days=1)
print('start: {0}'.format(start.isoformat()))
print('end: {0}'.format(end.isoformat()))
entries = TimeEntry.objects.get_queryset_df(start__gte=start, start__lte=end, project=project)
unit_hours = 8.0 if time_unit == 'days' else 1.0
entries['date'] = entries['start'].dt.date
total = entries['duration'].sum() / unit_hours
# entries['week'] = entries['start'].apply(lambda x: x.isocalendar()[1])
# entries['weekday'] = entries['start'].apply(lambda x: x.isoweekday())
entries_by_week_dict = defaultdict(dict)
for day in pd.date_range(start=start_str, end=end_str, tz="UTC"):
duration = entries[(entries['start'] >= day) & (entries['start'] <= day + timedelta(days=1))]['duration'].sum()
weeknr = str(day.isocalendar()[0]) + '_' + '{:02}'.format(day.isocalendar()[1])
print(weeknr)
weekday = ['', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday'][day.isocalendar()[2]]
entries_by_week_dict[weeknr][weekday] = {'date': day.strftime('%d-%m'), 'duration': duration}
entries_by_week = [entries_by_week_dict[x] for x in sorted(entries_by_week_dict.keys())]
timeentries = entries.to_dict(orient='records')
start_out_str = start.strftime('%d-%m-%Y')
end_out_str = (end - timedelta(days=1)).strftime('%d-%m-%Y')
context = {
'client': client,
'description': 'description',
'end': end_out_str,
'start': start_out_str,
'entries_by_week': entries_by_week,
'timeentries': timeentries,
'total': '{0:.1f}'.format(total),
'time_unit': time_unit,
'user': user
}
template_file = project.timesheet_template if project.timesheet_template else 'calendar_timesheet.html'
content = loader.render_to_string(template_file, context, request, using=None)
if request.GET.get('output', '') == 'pdf':
response = HttpResponse(content_type='application/pdf')
response['Content-Disposition'] = f'attachment; filename="{project}_timesheet_{start_out_str}_{end_out_str}.pdf"'
HTML(string=content).write_pdf(response, stylesheets=['invoicing/static/theme.css'])
return response
return HttpResponse(content, None, 200)
def generate_invoice(request):
if request.method == 'GET':
form = InvoiceForm()
elif request.method == 'POST':
form = InvoiceForm(initial=request.POST)
project = Project.objects.get(pk=request.POST.get('project'))
start_str = request.POST.get('start')
start = date(*[int(x) for x in start_str.split('-')])
end_str = request.POST.get('end')
end = date(*[int(x) for x in end_str.split('-')])
days = request.POST.get('days')
delivery_date = request.POST.get('delivery_date')
invoice = Invoice(project=project, start=start, end=end, days=days, delivery_date=delivery_date)
if project.default_invoice_description:
invoice.description = project.default_invoice_description
invoice.save()
existing_invoices = Invoice.objects.all().order_by('-number')
existing_creditnotes = CreditNote.objects.all().order_by('-number')
context = {'form': form, 'invoices': existing_invoices, 'creditnotes': existing_creditnotes}
return render(request, 'invoice_form.html', context)
def display_invoice(request):
"""
get all time entries for a project and date range, and generate a invoice.
Expected query parameters:
- invoiceId
"""
if request.method == 'GET':
invoice_id = request.GET.get('invoiceId', '1')
invoice = Invoice.objects.get(pk=int(invoice_id))
invoice_date_format = '%d/%m/%Y'
total_price = invoice.days * invoice.project.rate
total_vat = invoice.days * invoice.project.rate * invoice.vat_rate
invoice_items = [
{'description': '{} dagen ontwikkeling aan €{} per dag (waarvan 15% auteursrechten)'.format(invoice.days, invoice.project.rate),
'price': '{0:.2f}'.format(invoice.days * invoice.project.rate),
'vat': '{0:.2f}'.format(invoice.days * invoice.project.rate * invoice.vat_rate),
'vat_rate': int(invoice.project.vat_rate * 100)}]
if invoice.invoiceitem_set.all().count() > 0:
for item in invoice.invoiceitem_set.all():
item_vat_rate = item.vat_rate if item.vat_rate else invoice.vat_rate
invoice_items.append({
'description': item.description,
'price': '{0:.2f}'.format(item.price),
'vat': '{0:.2f}'.format(item.price * item_vat_rate),
'vat_rate': int(item_vat_rate * 100)})
total_price += item.price
total_vat += item.price * item_vat_rate
context = {
'client': invoice.project.client,
'user': invoice.project.user,
'invoice_number': invoice.number,
'start': invoice.start.strftime(invoice_date_format),
'end': invoice.end.strftime(invoice_date_format),
'invoice_date': invoice.date.strftime(invoice_date_format),
'invoice_delivery_date': invoice.delivery_date.strftime(invoice_date_format),
'invoice_items': invoice_items,
'description': invoice.description,
'nr_of_days': '{0:.2f}'.format(invoice.days),
'rate': '{0:.2f}'.format(invoice.project.rate),
'total': '{0:.2f}'.format(total_price),
'vat': '{0:.2f}'.format(total_vat) if total_vat > 0 else '0.00 (customer is VAT exempt)',
'total_vat': '{0:.2f}'.format(float(total_price) + float(total_vat)),
}
template = invoice.project.invoice_template if not invoice.is_credit_invoice else invoice.project.credit_template
content = loader.render_to_string(template, context, request, using=None)
if request.GET.get('output', '') == 'pdf':
response = HttpResponse(content_type='application/pdf')
response['Content-Disposition'] = f'attachment; filename="{invoice.number}_invoice_{invoice.project}.pdf"'
HTML(string=content).write_pdf(response, stylesheets=['invoicing/static/theme.css'])
return response
return HttpResponse(content, None, 200)
def display_creditnote(request):
"""
Display the creditnote
"""
if request.method == 'GET':
creditnote_id = request.GET.get('creditnoteId', '1')
creditnote = CreditNote.objects.get(pk=int(creditnote_id))
date_format = '%d/%m/%Y'
total_price = creditnote.amount
total_vat = creditnote.amount * creditnote.vat_rate
context = {
'client': creditnote.project.client,
'user': creditnote.project.user,
'creditnote_number': creditnote.number,
'creditnote_date': creditnote.date.strftime(date_format),
'description': creditnote.description,
'total': '{0:.2f}'.format(total_price),
'vat': '{0:.2f}'.format(total_vat),
'total_vat': '{0:.2f}'.format(float(total_price) + float(total_vat)),
}
template = creditnote.project.credit_template
content = loader.render_to_string(template, context, request, using=None)
if request.GET.get('output', '') == 'pdf':
response = HttpResponse(content_type='application/pdf')
response['Content-Disposition'] = f'attachment; filename="{creditnote.number}_creditnote_{creditnote.project}.pdf"'
HTML(string=content).write_pdf(response, stylesheets=['invoicing/static/theme.css'])
return response
return HttpResponse(content, None, 200)
def get_time_entries(request):
if request.method == 'GET':
project_id = request.GET.get('project', '')
start_str = request.GET.get('start', '')
end_str = request.GET.get('end', '')
project = Project.objects.get(pk=int(project_id))
start = datetime.strptime(start_str, '%Y-%m-%d')
end = datetime.strptime(end_str, '%Y-%m-%d')
entries = TimeEntry.objects.get_queryset_df(start__gte=start, start__lte=end, project=project)
return HttpResponse(entries.T.to_json())