from __future__ import unicode_literals from datetime import datetime, date from decimal import Decimal from reportlab.lib import colors from reportlab.lib.enums import TA_CENTER, TA_RIGHT from reportlab.lib.pagesizes import letter from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib.units import inch from reportlab.platypus import SimpleDocTemplate, Paragraph, Table, Spacer from pyinvoice.components import SimpleTable, TableWithHeader, PaidStamp from pyinvoice.models import PDFInfo, Item, Transaction, InvoiceInfo, ServiceProviderInfo, ClientInfo class SimpleInvoice(SimpleDocTemplate): default_pdf_info = PDFInfo(title='Invoice', author='CiCiApp.com', subject='Invoice') def __init__(self, invoice_path, pdf_info=None): if not pdf_info: pdf_info = self.default_pdf_info SimpleDocTemplate.__init__( self, invoice_path, pagesize=letter, rightMargin=inch, leftMargin=inch, topMargin=inch, bottomMargin=inch, **pdf_info.__dict__ ) self._defined_styles = getSampleStyleSheet() self._defined_styles.add( ParagraphStyle('RightHeading1', parent=self._defined_styles.get('Heading1'), alignment=TA_RIGHT) ) self._defined_styles.add( ParagraphStyle('TableParagraph', parent=self._defined_styles.get('Normal'), alignment=TA_CENTER) ) self.invoice_info = None self.service_provider_info = None self.client_info = None self.is_paid = False self._items = [] self._item_tax_rate = None self._transactions = [] self._story = [] self._bottom_tip = None self._bottom_tip_align = None @property def items(self): return self._items[:] def add_item(self, item): if isinstance(item, Item): self._items.append(item) def set_item_tax_rate(self, rate): self._item_tax_rate = rate @property def transactions(self): return self._transactions[:] def add_transaction(self, t): if isinstance(t, Transaction): self._transactions.append(t) def set_bottom_tip(self, text, align=TA_CENTER): self._bottom_tip = text self._bottom_tip_align = align @staticmethod def __format_value(value): if isinstance(value, datetime): value = value.strftime('%Y-%m-%d %H:%M') elif isinstance(value, date): value = value.strftime('%Y-%m-%d') return value def __attribute_to_table_data(self, instance, attribute_verbose_name_list): data = [] for property_name, verbose_name in attribute_verbose_name_list: attr = getattr(instance, property_name) if attr: attr = self.__format_value(attr) data.append(['{0}:'.format(verbose_name), attr]) return data def __build_invoice_info(self): if isinstance(self.invoice_info, InvoiceInfo): self._story.append( Paragraph('Invoice', self._defined_styles.get('RightHeading1')) ) props = [('invoice_id', 'Invoice id'), ('invoice_datetime', 'Invoice date'), ('due_datetime', 'Invoice due date')] self._story.append( SimpleTable(self.__attribute_to_table_data(self.invoice_info, props), horizontal_align='RIGHT') ) def __service_provider_data(self): props = [('name', 'Name'), ('street', 'Street'), ('city', 'City'), ('state', 'State'), ('country', 'Country'), ('post_code', 'Post code'), ('vat_tax_number', 'Vat/Tax number')] return self.__attribute_to_table_data(self.service_provider_info, props) def __build_service_provider_info(self): # Merchant if isinstance(self.service_provider_info, ServiceProviderInfo): self._story.append( Paragraph('Merchant', self._defined_styles.get('RightHeading1')) ) self._story.append( SimpleTable(self.__service_provider_data(), horizontal_align='RIGHT') ) def __client_info_data(self): props = [('name', 'Name'), ('street', 'Street'), ('city', 'City'), ('state', 'State'), ('country', 'Country'), ('post_code', 'Post code'), ('email', 'Email'), ('client_id', 'Client id')] return self.__attribute_to_table_data(self.client_info, props) def __build_client_info(self): # ClientInfo if isinstance(self.client_info, ClientInfo): self._story.append( Paragraph('Client', self._defined_styles.get('Heading1')) ) self._story.append( SimpleTable(self.__client_info_data(), horizontal_align='LEFT') ) def __build_service_provider_and_client_info(self): if isinstance(self.service_provider_info, ServiceProviderInfo) and isinstance(self.client_info, ClientInfo): # Merge Table table_data = [ [Paragraph('Service Provider', self._defined_styles.get('Heading1')), '', '', Paragraph('Client', self._defined_styles.get('Heading1')), ''] ] table_style = [ ('SPAN', (0, 0), (1, 0)), ('SPAN', (3, 0), (4, 0)), ('LINEBELOW', (0, 0), (1, 0), 1, colors.gray), ('LINEBELOW', (3, 0), (4, 0), 1, colors.gray), ('LEFTPADDING', (0, 0), (-1, -1), 0), ] client_info_data = self.__client_info_data() service_provider_data = self.__service_provider_data() diff = abs(len(client_info_data) - len(service_provider_data)) if diff > 0: if len(client_info_data) < len(service_provider_data): client_info_data.extend([["", ""]]*diff) else: service_provider_data.extend([["", ""]*diff]) for d in zip(service_provider_data, client_info_data): d[0].append('') d[0].extend(d[1]) table_data.append(d[0]) self._story.append( Table(table_data, style=table_style) ) else: self.__build_service_provider_info() self.__build_client_info() def __build_items(self): # Items item_data = [] item_subtotal = 0 for item in self._items: if not isinstance(item, Item): continue item_data.append( ( item.name, Paragraph(item.description, self._defined_styles.get('TableParagraph')), item.units, item.unit_price, item.amount ) ) item_subtotal += item.amount if item_data: self._story.append( Paragraph('Detail', self._defined_styles.get('Heading1')) ) item_data_title = ('Name', 'Description', 'Units', 'Unit Price', 'Amount') item_data.insert(0, item_data_title) # Insert title # Summary field sum_start_y_index = len(item_data) sum_end_x_index = -1 - 1 sum_start_x_index = len(item_data_title) - abs(sum_end_x_index) style = [] # ##### Subtotal ##### item_data.append( ('Subtotal', '', '', '', item_subtotal) ) style.append(('SPAN', (0, sum_start_y_index), (sum_start_x_index, sum_start_y_index))) style.append(('ALIGN', (0, sum_start_y_index), (sum_end_x_index, -1), 'RIGHT')) # Tax total if self._item_tax_rate is not None: tax_total = item_subtotal * (Decimal(str(self._item_tax_rate)) / Decimal('100')) item_data.append( ('Vat/Tax ({0}%)'.format(self._item_tax_rate), '', '', '', tax_total) ) sum_start_y_index += 1 style.append(('SPAN', (0, sum_start_y_index), (sum_start_x_index, sum_start_y_index))) style.append(('ALIGN', (0, sum_start_y_index), (sum_end_x_index, -1), 'RIGHT')) else: tax_total = None # Total total = item_subtotal + tax_total if tax_total else Decimal('0') item_data.append(('Total', '', '', '', total)) sum_start_y_index += 1 style.append(('SPAN', (0, sum_start_y_index), (sum_start_x_index, sum_start_y_index))) style.append(('ALIGN', (0, sum_start_y_index), (sum_end_x_index, -1), 'RIGHT')) self._story.append(TableWithHeader(item_data, horizontal_align='LEFT', style=style)) def __build_transactions(self): # Transaction transaction_table_data = [ ( t.transaction_id, Paragraph(t.gateway, self._defined_styles.get('TableParagraph')), self.__format_value(t.transaction_datetime), t.amount, ) for t in self._transactions if isinstance(t, Transaction) ] if transaction_table_data: self._story.append( Paragraph('Transaction', self._defined_styles.get('Heading1')) ) transaction_table_data.insert(0, ('Transaction id', 'Gateway', 'Transaction date', 'Amount')) self._story.append(TableWithHeader(transaction_table_data, horizontal_align='LEFT')) def __build_bottom_tip(self): if self._bottom_tip: self._story.append(Spacer(5, 5)) self._story.append( Paragraph( self._bottom_tip, ParagraphStyle( 'BottomTip', parent=self._defined_styles.get('Normal'), alignment=self._bottom_tip_align ) ) ) def finish(self): self._story = [] self.__build_invoice_info() self.__build_service_provider_and_client_info() self.__build_items() self.__build_transactions() self.__build_bottom_tip() self.build(self._story, onFirstPage=PaidStamp(7 * inch, 5.8 * inch) if self.is_paid else None)