150 lines
4.0 KiB
Python
150 lines
4.0 KiB
Python
import io
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import os
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from base64 import b64encode
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import frappe
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from frappe import _
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from frappe.custom.doctype.custom_field.custom_field import create_custom_fields
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from frappe.utils.data import add_to_date, get_time, getdate
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from pyqrcode import create as qr_create
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from erpnext import get_region
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def create_qr_code(doc, method=None):
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region = get_region(doc.company)
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if region not in ['Saudi Arabia']:
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return
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# if QR Code field not present, create it. Invoices without QR are invalid as per law.
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if not hasattr(doc, 'ksa_einv_qr'):
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create_custom_fields({
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doc.doctype: [
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dict(
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fieldname='ksa_einv_qr',
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label='KSA E-Invoicing QR',
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fieldtype='Attach Image',
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read_only=1, no_copy=1, hidden=1
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)
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]
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})
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# Don't create QR Code if it already exists
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qr_code = doc.get("ksa_einv_qr")
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if qr_code and frappe.db.exists({"doctype": "File", "file_url": qr_code}):
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return
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meta = frappe.get_meta(doc.doctype)
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if "ksa_einv_qr" in [d.fieldname for d in meta.get_image_fields()]:
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''' TLV conversion for
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1. Seller's Name
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2. VAT Number
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3. Time Stamp
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4. Invoice Amount
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5. VAT Amount
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'''
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tlv_array = []
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# Sellers Name
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seller_name = frappe.db.get_value(
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'Company',
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doc.company,
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'company_name_in_arabic')
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if not seller_name:
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frappe.throw(_('Arabic name missing for {} in the company document').format(doc.company))
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tag = bytes([1]).hex()
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length = bytes([len(seller_name.encode('utf-8'))]).hex()
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value = seller_name.encode('utf-8').hex()
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tlv_array.append(''.join([tag, length, value]))
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# VAT Number
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tax_id = frappe.db.get_value('Company', doc.company, 'tax_id')
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if not tax_id:
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frappe.throw(_('Tax ID missing for {} in the company document').format(doc.company))
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tag = bytes([2]).hex()
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length = bytes([len(tax_id)]).hex()
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value = tax_id.encode('utf-8').hex()
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tlv_array.append(''.join([tag, length, value]))
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# Time Stamp
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posting_date = getdate(doc.posting_date)
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time = get_time(doc.posting_time)
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seconds = time.hour * 60 * 60 + time.minute * 60 + time.second
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time_stamp = add_to_date(posting_date, seconds=seconds)
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time_stamp = time_stamp.strftime('%Y-%m-%dT%H:%M:%SZ')
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tag = bytes([3]).hex()
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length = bytes([len(time_stamp)]).hex()
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value = time_stamp.encode('utf-8').hex()
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tlv_array.append(''.join([tag, length, value]))
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# Invoice Amount
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invoice_amount = str(doc.grand_total)
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tag = bytes([4]).hex()
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length = bytes([len(invoice_amount)]).hex()
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value = invoice_amount.encode('utf-8').hex()
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tlv_array.append(''.join([tag, length, value]))
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# VAT Amount
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vat_amount = str(doc.total_taxes_and_charges)
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tag = bytes([5]).hex()
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length = bytes([len(vat_amount)]).hex()
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value = vat_amount.encode('utf-8').hex()
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tlv_array.append(''.join([tag, length, value]))
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# Joining bytes into one
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tlv_buff = ''.join(tlv_array)
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# base64 conversion for QR Code
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base64_string = b64encode(bytes.fromhex(tlv_buff)).decode()
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qr_image = io.BytesIO()
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url = qr_create(base64_string, error='L')
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url.png(qr_image, scale=2, quiet_zone=1)
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name = frappe.generate_hash(doc.name, 5)
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# making file
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filename = f"QRCode-{name}.png".replace(os.path.sep, "__")
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_file = frappe.get_doc({
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"doctype": "File",
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"file_name": filename,
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"is_private": 0,
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"content": qr_image.getvalue(),
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"attached_to_doctype": doc.get("doctype"),
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"attached_to_name": doc.get("name"),
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"attached_to_field": "ksa_einv_qr"
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})
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_file.save()
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# assigning to document
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doc.db_set('ksa_einv_qr', _file.file_url)
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doc.notify_update()
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def delete_qr_code_file(doc, method=None):
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region = get_region(doc.company)
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if region not in ['Saudi Arabia']:
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return
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if hasattr(doc, 'ksa_einv_qr'):
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if doc.get('ksa_einv_qr'):
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file_doc = frappe.get_list('File', {
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'file_url': doc.get('ksa_einv_qr')
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})
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if len(file_doc):
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frappe.delete_doc('File', file_doc[0].name)
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def delete_vat_settings_for_company(doc, method=None):
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if doc.country != 'Saudi Arabia':
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return
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if frappe.db.exists('KSA VAT Setting', doc.name):
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frappe.delete_doc('KSA VAT Setting', doc.name)
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