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invoice.py
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invoice.py
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import datetime
import logging, re, os, shutil, sys
import locale
from reportlab.pdfgen import canvas
from reportlab.pdfgen.canvas import Canvas
from reportlab.platypus import Table
from reportlab.lib.pagesizes import A4
from reportlab.lib.units import cm
def generate_invoice():
p = canvas.Canvas("out.pdf")
p.drawString(100, 100, "Hello world.")
p.showPage()
p.save()
from reportlab.lib.units import cm
# from invoice.conf import settings
import importlib
consultant_logo_filename = None
business_details = (
'Scott Stafford',
'1212 Mockingbird Lane',
'City, ST 11111',
'',
'Email: scott.stafford@example.com',
)
note = (
'PAYMENT TERMS: 30 DAYS FROM INVOICE DATE.',
'Please make all cheques payable to Your Name.',
)
locale.setlocale( locale.LC_ALL, '' )
def format_currency(value, currency):
return locale.currency(value, grouping=True) #"{0:C0}".format(value)
def draw_header(canvas):
""" Draws the invoice header """
canvas.setStrokeColorRGB(176/255., 196/255., 222/255.)
# canvas.setStrokeColorRGB(0.9, 0.5, 0.2)
canvas.setFillColorRGB(0.2, 0.2, 0.2)
canvas.setFont('Helvetica', 16)
canvas.drawString(18 * cm, -1 * cm, 'Invoice')
if consultant_logo_filename:
canvas.drawInlineImage(consultant_logo_filename, 1 * cm, -1 * cm, 250, 16)
canvas.setLineWidth(4)
canvas.line(0, -1.25 * cm, 21.7 * cm, -1.25 * cm)
def draw_address(canvas, text=None):
""" Draws the business address """
canvas.setFont('Helvetica', 9)
textobject = canvas.beginText(13 * cm, -2.5 * cm)
if text is None:
text = business_details
for line in text:
textobject.textLine(line)
canvas.drawText(textobject)
def draw_footer(canvas, text=None):
""" Draws the invoice footer """
note = (
'Bank Details: Street address, Town, County, POSTCODE',
'Sort Code: 00-00-00 Account No: 00000000 (Quote invoice number).',
'Please pay via bank transfer or cheque. All payments should be made in CURRENCY.',
'Make cheques payable to Company Name Ltd.',
)
if text is None:
text = note
textobject = canvas.beginText(1 * cm, -27 * cm)
for line in text:
textobject.textLine(line)
canvas.drawText(textobject)
# inv_module = importlib.import_module(settings.INV_MODULE)
# header_func = inv_module.draw_header
# address_func = inv_module.draw_address
# footer_func = inv_module.draw_footer
header_func = draw_header
address_func = draw_address
footer_func = draw_footer
def draw_pdf(buffer, invoice):
""" Draws the invoice """
canvas = Canvas(buffer, pagesize=A4)
canvas.translate(0, 29.7 * cm)
canvas.setFont('Helvetica', 10)
canvas.saveState()
header_func(canvas)
canvas.restoreState()
canvas.saveState()
footer_func(canvas, invoice.footer)
canvas.restoreState()
canvas.saveState()
address_func(canvas, invoice.address)
canvas.restoreState()
# Client address
textobject = canvas.beginText(1.5 * cm, -2.5 * cm)
for line in invoice.client_business_details:
textobject.textLine(line)
# if invoice.address.contact_name:
# textobject.textLine(invoice.address.contact_name)
# textobject.textLine(invoice.address.address_one)
# if invoice.address.address_two:
# textobject.textLine(invoice.address.address_two)
# textobject.textLine(invoice.address.town)
# if invoice.address.county:
# textobject.textLine(invoice.address.county)
# textobject.textLine(invoice.address.postcode)
# textobject.textLine(invoice.address.country.name)
canvas.drawText(textobject)
# Info
textobject = canvas.beginText(1.5 * cm, -6.75 * cm)
textobject.textLine('Invoice ID: %s' % invoice.invoice_id)
textobject.textLine('Invoice Date: %s' % invoice.invoice_date.strftime('%d %b %Y'))
textobject.textLine('Client: %s' % invoice.client)
for line in invoice.body_text:
textobject.textLine(line)
canvas.drawText(textobject)
# Items
data = [['Quantity', 'Description', 'Amount', 'Total'], ]
for item in invoice.items:
data.append([
item.quantity,
item.description,
format_currency(item.unit_price, invoice.currency),
format_currency(item.total(), invoice.currency)
])
data.append(['', '', 'Total:', format_currency(invoice.total(), invoice.currency)])
table = Table(data, colWidths=[2 * cm, 11 * cm, 3 * cm, 3 * cm])
table.setStyle([
('FONT', (0, 0), (-1, -1), 'Helvetica'),
('FONTSIZE', (0, 0), (-1, -1), 10),
('TEXTCOLOR', (0, 0), (-1, -1), (0.2, 0.2, 0.2)),
('GRID', (0, 0), (-1, -2), 1, (0.7, 0.7, 0.7)),
('GRID', (-2, -1), (-1, -1), 1, (0.7, 0.7, 0.7)),
('ALIGN', (-2, 0), (-1, -1), 'RIGHT'),
('BACKGROUND', (0, 0), (-1, 0), (0.8, 0.8, 0.8)),
])
tw, th, = table.wrapOn(canvas, 15 * cm, 19 * cm)
table.drawOn(canvas, 1 * cm, -10 * cm - th)
canvas.showPage()
canvas.save()
class Invoice():
def __init__(self, id, client_business_details, client_name,
invoice_date=datetime.datetime.now(),
currency='USD', body=None, footer=None, address=None):
self.invoice_id = id
self.invoice_date = invoice_date
self.client = client_name
self.currency = currency
self.items = []
self.client_business_details = client_business_details
self.footer = footer
self.body_text = body
self.address = address
def total(self):
return sum([i.total() for i in self.items])
def add_item(self, *args, **kwargs):
self.items.append(Item(*args, **kwargs))
def save(self, out_filepath):
if out_filepath.lower().endswith('.pdf'):
draw_pdf(out_filepath, self)
else:
raise NotImplementedError("only .pdf")
class Item(object):
def __init__(self, name, qty, unit_price, description = ''):
self.name = name
self.description = description
self.quantity = qty
self.unit_price = unit_price
def total(self):
return self.unit_price * self.quantity
class Country():
def __init__(self, name):
self.name = name
client_business_details = [
'Company One',
'NYC',
]
if __name__=='__main__':
invoice = Invoice("VES001", client_business_details, "Company")
invoice.add_item(Item('august hours', 50.25, 125.0, 'Hours for august'))
draw_pdf('out.pdf', invoice)