GST tax invoice print format and more (#9616)

* GST Tax Invoice print format and more. Fixes #9545 #9566 #9608

* Reload gst print format only for Indian users

* Fixes as Codacy

erpnext/controllers/taxes_and_totals.py

@@ -5,7 +5,7 @@ from __future__ import unicode_literals
 import json
 import frappe, erpnext
 from frappe import _, scrub
-from frappe.utils import cint, flt, round_based_on_smallest_currency_fraction
+from frappe.utils import cint, flt, cstr, fmt_money, round_based_on_smallest_currency_fraction
 from erpnext.controllers.accounts_controller import validate_conversion_rate, \
 	validate_taxes_and_charges, validate_inclusive_tax
 
@@ -24,6 +24,9 @@ class calculate_taxes_and_totals(object):
 
 		if self.doc.doctype in ["Sales Invoice", "Purchase Invoice"]:
 			self.calculate_total_advance()
+			
+		if self.doc.meta.get_field("other_charges_calculation"):
+			self.set_item_wise_tax_breakup()
 
 	def _calculate(self):
 		self.calculate_item_values()
@@ -504,3 +507,106 @@ class calculate_taxes_and_totals(object):
 				rate_with_margin = flt(item.price_list_rate) + flt(margin_value)
 
 		return rate_with_margin
+
+	def set_item_wise_tax_breakup(self):
+		item_tax = {}
+		tax_accounts = []
+		
+		item_tax, tax_accounts = self.get_item_tax(item_tax, tax_accounts)
+		
+		headings = get_table_column_headings(tax_accounts)
+		
+		distinct_items = self.get_distinct_items()
+		
+		rows = get_table_rows(distinct_items, item_tax, tax_accounts)
+		
+		if not rows:
+			self.doc.other_charges_calculation = ""
+		else:
+			self.doc.other_charges_calculation = '''
+<div class="tax-break-up" style="overflow-x: auto;">
+	<table class="table table-bordered table-hover">
+		<thead><tr>{headings}</tr></thead>
+		<tbody>{rows}</tbody>
+	</table>
+</div>'''.format(**{
+	"headings": "\n".join(headings),
+	"rows": "\n".join(rows)
+})
+
+	def get_item_tax(self, item_tax, tax_accounts):
+		company_currency = erpnext.get_company_currency(self.doc.company)
+
+		for tax in self.doc.taxes:
+			tax_amount_precision = tax.precision("tax_amount")
+			tax_rate_precision = tax.precision("rate");
+			
+			item_tax_map = self._load_item_tax_rate(tax.item_wise_tax_detail)
+			for item_code, tax_data in item_tax_map.items():
+				if not item_tax.get(item_code):
+					item_tax[item_code] = {}
+					
+				if isinstance(tax_data, list):
+					tax_rate = ""
+					if tax_data[0]:
+						if tax.charge_type == "Actual":
+							tax_rate = fmt_money(flt(tax_data[0], tax_amount_precision),
+								tax_amount_precision, company_currency)
+						else:
+							tax_rate = cstr(flt(tax_data[0], tax_rate_precision)) + "%"
+							
+						tax_amount = fmt_money(flt(tax_data[1], tax_amount_precision),
+							tax_amount_precision, company_currency)
+							
+						item_tax[item_code][tax.name] = [tax_rate, tax_amount]
+					else:
+						item_tax[item_code][tax.name] = [cstr(flt(tax_data, tax_rate_precision)) + "%", ""]
+			tax_accounts.append([tax.name, tax.account_head])
+		
+		return item_tax, tax_accounts
+
+	
+	def get_distinct_items(self):
+		distinct_item_names = []
+		distinct_items = []
+		for item in self.doc.items:
+			item_code = item.item_code or item.item_name
+			if item_code not in distinct_item_names:
+				distinct_item_names.append(item_code)
+				distinct_items.append(item)
+				
+		return distinct_items
+
+def get_table_column_headings(tax_accounts):
+	headings_name = [_("Item Name"), _("Taxable Amount")] + [d[1] for d in tax_accounts]
+	headings = []
+	for head in headings_name:
+		if head == _("Item Name"):
+			headings.append('<th style="min-width: 120px;" class="text-left">' + (head or "") + "</th>")
+		else:
+			headings.append('<th style="min-width: 80px;" class="text-right">' + (head or "") + "</th>")
+			
+	return headings
+
+def get_table_rows(distinct_items, item_tax, tax_accounts):
+	rows = []
+	for item in distinct_items:
+		item_tax_record = item_tax.get(item.item_code or item.item_name)
+		if not item_tax_record:
+			continue
+		
+		taxes = []
+		for head in tax_accounts:
+			if item_tax_record[head[0]]:
+				taxes.append("<td class='text-right'>(" + item_tax_record[head[0]][0] + ") "
+					 + item_tax_record[head[0]][1] + "</td>")
+			else:
+				taxes.append("<td></td>")
+		
+		rows.append("<tr><td>{item_name}</td><td class='text-right'>{taxable_amount}</td>{taxes}</tr>".format(**{
+			"item_name": item.item_name,
+			"taxable_amount": item.net_amount,
+			"taxes": "\n".join(taxes)
+		}))
+		
+	return rows